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Panouri din fibrociment pentru fatade ventilate CEMBRIT

Instalarea panourilor din fibrociment pentru fatade ventilate CEMBRIT Cover, Solid, Transparent

Limba: Engleza

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Tip documentatie: Instructiuni montaj, utilizare

Pagina 1 - Instalarea panourilor din fibrociment pentru fatade ventilate CEMBRIT Cover, Solid,...

Installation Cembrit Cover, Solid and Transparent Table of Contents Product Information 2 Product Datasheet 5 Accessories 6 Installation on wooden sub-cunstruction 8 Installation on aluminium sub-construction 15 Installation on steel sub-construction 22 Installation by bonding 29 Weatherboards 29 Storing, Handling and Processing 33 Maintenance 36 Product Information Product Information Cembrit fibre-cement is a modern building material made from natural and environmentally friendly raw materials. The technology has been developed by Cembrit, holding more than 80 years of experience within the manufacture of fibre cement. Our wide experience ensures a sustainable product which has accumulated all the advantages of fibre cement. The Ufacade range can be used in all selfventilated light weight facade constructions. Featuring properties such as non-combustibility, sound and weather insulation as well as high impact strength, Cembrit fibre-cement boards are the ideal facad

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Pagina 2 - Instalarea panourilor din fibrociment pentru fatade ventilate CEMBRIT Cover, Solid,...

e material. The fibre-cement boards are produced from a composition of Portland cement, mineral fillers, cellulose and plastic fibres. Quality: Cembrit product specifications and classifications comply with EN 12467:2004 and 13501-1:2002. The facade range: • is manufactured in accordance with the quality management system ISO 9001:2008 and the environmental management system ISO 14001:2004 • holds an Environmental Product Declaration EPD-CEM-2012111-E according to ISO 14025 • complies with the provisions set out in the Construction Products Regulation (EU) No. 305/2011 • complies with the CE Declaration of Performance 2 Ventilated facade, principle 1 3 2 3 4 3 5 3 63 7 3 21 3 Load bearing wall Insulation EPDM underlay (only on wood sub structures) Air gap min 25 mm Aluminium frame system Rivet 4.0 x 20 K14 or screw Facade board Surface appearance and colours Because of its natural composition, variations in appearance may occur in the individual boards and

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from board to board. Please note that this does not have any negative effect upon the durability of the boards. In order to minimise differences, it is recommended that boards intended for the same facade are taken from the same batch as minor variations may occur from one production lot to another. Over time colours may change as a consequence of the impact from UV light and the environment in general. Cembrit boards will, however, maintain their colour and gloss level to a high extent. According to the European standard EN 20105 Test Rating for colour fastness, Part A02 Grey Scale for assessing change in colour, most colours will maintain grade 4-5 after a QUV test of 3000 hours, which in oral terms means that changes are hardly visible. Preferred application areas are: • Self-ventilating facades • Attics • Weatherboards • Window elements • Eaves and roof edges • Balconies • Prefabricated facade elements Self-ventilating facades The self-ventilating facade is a p

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hysical construction which contributes to reducing temperature variations in the wall throughout the year. Sunlight is reflected in the summertime, and the dry insulation reduces heat loss in cold seasons. At the same time the construction ventilates interior condensation. The boards can be installed with open horizontal joints, with joint profiles or as a weather boarding. The sub-construction is anchored to the inner wall and transfers the load of the facade boards to the main construction. Character of Change 5 No change 4 Insignificant change of depth in colour. Hardly visible 3 Loss in depth of colour. Visible 2 Increasing change 1 Major change 3 Dimensions 1250 mm 1192 mm 1192 mm Thickness: 8 mm 2500 mm 2500 mm 3050 mm 3050 mm 1250 mm Thickness: 8 mm Thickness: 8 mm Thickness: 8 mm Finishing If boards are cut to size on site, cutting edges should be bevelled with sand paper. After trimming, the edges must be sealed with Cembrit Universal Edge Sealer inc

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luded in the delivery. Please see instructions on page 38. 4 Product Datasheet for Cembrit Transparent, Cembrit Cover and Cembrit Solid Property Value Cembrit Transparent Unit Value Cembrit Cover Value Cembrit Solid Dimension after trimming Width mm 1192 / 1220 1192 / 1220 1192 / 1220 Length mm 2500 / 3040 2500 / 3050 2500 / 3050 Thickness mm 8.0 8.0 8.0 Physical properties Density, dry Kg/m3 ≥1550 ≥1500 ≥1500 Weight Kg/m ~15.7 ~15.7 ~15.7 GPa 13 13 13 MPa 18 18 18 2 Mechanical properties Bending modulus of elasticity Dry E-module with grain Bending strength Wet with grain Thermal properties Heat conductivity W/m °C 0.5 0.5 0.5 Coefficient of thermal expansion mm/m °C 0.01 0.01 0.01 Temperature range Frost resistance °C Max. 80 Max. 80 Max. 80 Cycles >100 >100 >100 mm/m 1.5 1.5 1.5 Hygrothermal properties Moisture movement (50-90% RH) Tolerances (ref. EN 12467) % + _±10 + _±10 + _±10 Length Thickness m

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m + _±3 + _±3 + _±3 Width mm + _±2 + _±2 + _±2 Category. Class EN 12467 NT A4 I NT A4 I NT A4 I Fire rating EN 13501 A2-s1, d0 A2-s1, d0 A2-s1, d0 Other properties pH surface 11 Cembrit complies with the relevant provisions of the Construction Products Regulation (EU) No. 305/2011 5 Accessories Cembrit screws for fixing facade boards are made of stainless steel for achieving the highest corrosion resistance. Mushroom head wood screws 4.5 x 36/41 are used for wooden sub-constructions. The screws have a sharp point and a fast cutting thread which ensure firm fixing with a high pull-out value. Furthermore, a washer is fixed on the tip of the screw to centralise it and to minimise penetration of water into the screw hole. On aluminium sub-constructions rivets are most commonly used. Cembrit rivets 4.0 x 20 K14 feature an aluminium body with a stainless steel mandrel. At fix-points, a sleeve is used to prevent movement of the board. In order to allow the boar

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ds to move freely in sliding points when influenced by moisture and temperature changes, a stand-off head must be used ensuring a small space between the board and the rivet head. Drill holes are made correctly with the centering device. All screws are delivered in their natural colour or powder painted in the same colour as the facade boards, and with a screw bit included ready to use. 16 19 18 8 19 4 4 Aluminium corner profiles for internal and external corners are available on request. An alternative solution for wooden subconstructions is the wing screw 4.9 x 38 which is equipped with a cutting bit and therefore requires no pre-drilling. For steel sub-constructions with profiles ≥ 0.5 use Cembrit stainless steel self drilling and thread cutting screw 4.8 x 29 #1 with drilling capacity 0.5-1.5 mm. As an alternative use Cembrit stainless steel rivets 4.8x19 K14. Special drill bit such as TCT Drill (7-8-9 mm) from Irwin Tools for pre-drilling in the facade boards. Cembrit E

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PDM rubber underlay (3x90 mm and 3 x 30 mm) should always be placed under the Cembrit boards using mechanical fixing. For securing the above mentioned free movement of the boards, it is of great importance that the drill hole in the aluminium sub-construction and the drill hole in the Cembrit board are concentric. This is ensured by using an assisting tool: 4.1 mm HSS drill for rivets in aluminium profiles (4.0 x 20 K14). 4.9 mm HSS drill for rivets in steel profiles (4.8 x 19 K14). Cembrit boards can be fixed by gluing them to a sub-structure of planed impregnated wood or aluminium. Note! The glue supplier’s recommendations must be followed in this type of installation. For further information, please contact your local Cembrit representative. 6 Sub-constructions and Supports Basic sub-constructions Wooden sub-construction Metal sub-construction Aluminium sub-construction Combined sub-construction Steel sub-construction Important! Cladding with Cembrit products must alway

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s be carried out as a ventilated facade with min 25 mm distance between the cladding and the rear lining (insulation material). However, in special situations (e.g. high rise buildings), local regulations may demand a larger ventilation gap. Inlet and outlet openings must have a cross section of least 200 cm2/m. 7 Screws on wooden sub-constructions Fixing Details Horizontal board orientation Vertical board orientation Installation on wood, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø8 Installation on wood, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø8 Max support distance Max fixing distance Edge distance Corner distance Max support distance Max fixing distance Edge distance Corner distance k mm h, g mm a mm c mm k mm h, g mm a mm c mm 400-600** 350-600** 25-150 100-150* 400-600** 350-600** 25-150 100-150* *Overhang e.g. windows or foundations max 200 mm **De

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pending on windload. Concact Cembrit for further details. *Overhang e.g. windows or foundations max 200 mm **Depending on windload. Concact Cembrit for further details. Front view vertical orientation Front view horizontal orientation The installer is responsible for establishing a plane and strong sub-construction able to obtain the loads appearing on the actual facade and observing the fixing distances described in this manual. Facade boards are normally installed in a vertical position on a vertical sub-structure. It is however possible to install the boards in a horizontal position. The guidelines for fixing are identical, which means the edge distances, corner distances etc. follow the sub-structure. 8 Screws on wooden sub-constructions Fixing details screws on wood Horizontal cross section vertical joint 13 Load bearing wall 2 3 Insulation 4 3 Wind break 5 3 Air gap min 25 mm 6 3 Batten min 25 x 125 mm 8 3 EPDM underlay 90 mm 9 3 Facade screw 4.5 x 36/41 21 Faca

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de board a 3 Edge distance 25-150 mm b 3 Joint width 8 mm Horizontal cross section intermediate support 13 Load bearing wall 3 2 Insulation 3 4 Wind break 3 5 Air gap min 25 mm 3 6 Batten min 25 x 62 mm 37 EPDM underlay 30 mm 3 9 Facade screw 4.5 x 36/41 321 Facade board 9 Screws on wooden sub-constructions Horizontal cross section external corner 13 323 343 353 363 383 393 321 3 3a3 3b 3 Load bearing wall Insulation Wind break Air gap min 25 mm Batten min 25 x 125 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade board Edge distance 25-150 mm Joint width 8 mm Horizontal cross section internal corner 13 323 343 353 363 383 393 321 3 3a3 3b 3 Load bearing wall Insulation Wind break Air gap min 25 mm Batten min 25 x 125 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade board Edge distance 25-150 mm Joint width 8 mm 10 Horizontal cross section window (Window recess max. 200 mm without ventilation) 13 323 343 353 363 383 393 321 3 323 2 3a3 3b 3 Load bearing

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wall Insulation Wind break Air gap min 25 mm Batten min 25 x 125 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade board Window Edge distance 25-150 mm Joint width 8 mm 11 Screws on wooden sub-constructions Vertical cross section horizontal joint 1 2 4 5 8 9 21 b c Load bearing wall Insulation Wind break Air gap min 25 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade board Joint width 8 mm Corner distance 100-150 mm Vertical cross section foundation 13 323 343 353 383 393 318 3 321 3 323 3 3c3 3d 3 3 f3 Load bearing wall Insulation Wind break Air gap min 25 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Foundation Facade board Insect grating Corner distance 100-150 mm Ventilation inlet min 200 cm2/m Overhang approx. 30 mm 12 Screws on wooden sub-constructions Vertical cross section roof edge 13 323 343 353 383 393 321 3 3c3 3d 3 3 f3 Load bearing wall Insulation Wind break Air gap min 25 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade b

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oard Corner distance 100-150 mm Ventilation outlet min 200 cm2/m Overhang approx. 30 mm Vertical cross section window sill 13 323 343 353 383 393 320 3 321 3 323 2 3c3 3d 3 3 f3 Load bearing wall Insulation Wind break Air gap min 25 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Window sill Facade board Window Corner distance 100-150 mm Ventilation outlet min 200 cm2/m Overhang approx. 30 mm 13 Screws on wooden sub-constructions Vertical cross section window upper edge (Window recess max 200 mm without ventilation) 13 323 343 353 73 393 321 3 323 2 323 3 3c3 3d 3 3 f3 Load bearing wall Insulation Wind break Air gap min 25 mm EPDM underlay 90 mm Facade screw 4.5 x 36/41 Facade board Window Insect grating Corner distance 100-150 mm Ventilation inlet min 200 cm2/m Overhang approx. 30 mm Internal corner External corner Ceiling Facade boards may also be installed as under-cladding or ceiling. The installation principles are the same as for vertical installation. Edge distance fo

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r screws 25 mm. Corner distance 100 mm. Max support and fixing distances 400 mm. 100 mm 25 mm 400 mm 14 Rivets on aluminium Front view Ceiling 100 mm 30 mm 400 mm In order to achieve a correct and safe aluminium sub-construction, the supplier of the system should be consulted. However, there are a few rules to consider when it comes to the functionality of the facade boards: • Length of the aluminium profiles is minimised to 3000 mm (one storey) • The aluminium profiles must be fixed with one fix-point at the middle or the upper end and all other fixations as sliding points • All joints of the aluminium profiles must be aligned so they can be followed by joints of the facade boards. A board must never cross an aluminium profile joint and be fixed to two separate aluminium profiles across a joint • The facade boards must be fixed with a fix-point in the middle of the board. All other fixations are sliding points. In case of two intermediate supporting profiles, two

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fix-points at the same horizontal level are allowed • Every 12 m of the facade a double framing must be installed in order to create a dilatation joint. • Important! With installation with rivets, begin with the fix-points, followed by the sliding points above and finally the sliding points below. Fixing details Vertical board orientation Installation with rivets on aluminium, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø9 Max support Max fixing distance distance k mm h, g mm 400-600** 400-600** Edge distance Corner distance a mm c mm 30-150 100-150* *Overhang e.g. windows or foundations max 200 mm **Depending on windload. Concact Cembrit for further details. Fix Point Sliding point 15 Rivets on aluminium Horizontal orientation Facade boards may be installed in a horizontal position on a vertical sub-structure. On metal framing, the edge distance a ≥ 40 mm and corner distance c ≥ 100 mm. Fix Point Sliding point

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Horizontal board orientation Installation with rivets on aluminium, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø9 Max support distance Max fixing distance Edge distance Corner distance k mm h, g mm a mm c mm 400-600** 400-600** 40-150 100-150* *Overhang e.g. windows or foundations max 200 mm **Depending on windload. Concact Cembrit for further details. 16 Rivets on aluminium Horizontal cross section vertical joint 1 3 5 8 11 16 21 a b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium frame system Facade board Edge distance min 30/40 mm Joint width 8 mm Horizontal cross section intermediate support 1 Load bearing wall 3 Insulation 5 Air gap min 25 mm 7 EPDM underlay 30 mm (optionel) 11 Rivet 4.0x20 K14 16 Aluminium frame system 21 Facade board 17 Rivets on aluminium Horizontal cross section external corner 1 3

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5 7 8 11 16 17 21 a b e Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium frame system Aluminium angle 60x60x2 mm Facade board Edge distance min 30/40 mm Joint width 8 mm Dist. to wall fixing max 200 mm Horizontal cross section internal corner 1 3 5 7 8 11 16 17 21 a b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium frame system Aluminium angle 60x60x2 mm Facade board Edge distance min 30/40 mm Joint width 8 mm 18 Rivets on aluminium Horizontal cross section window (Window recess max 200 mm without ventilation) 1 3 5 7 8 11 16 17 21 22 a b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium frame system Aluminium angle 60x60x2 mm Facade b

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oard Window Edge distance min 30/40 mm Joint width 8 mm Vertical cross section horizontal joint 1 3 3 3 5 3 8 3 10 3 11 3 15 3 16 3 21 3 b 3 c 3 Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Fixing point profile/bracket Rivet 4.0x20 K14 Aluminium profile Aluminium frame system Facade board Joint width 8 mm Corner distance min 100 mm Note! Boards must never be fixed to two separate profiles! 19 Rivets on aluminium Vertical cross section foundation 1 3 5 8 10 11 15 16 18 21 2 3 c d f Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Fixing point profile/bracket Rivet 4.0x20 K14 Aluminium profile Aluminium frame system Foundation Facade board Insect grating Corner distance 100-150 mm Ventilation inlet min 200cm2/m Overhang approx. 30 mm Vertical cross section roof edge 1 3 5 8 11 15 16 21 c d f Load bearing wall Insulation Air gap min 25 mm EP

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DM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium profile Aluminium frame system Facade board Corner distance 100-150 mm Ventilation outlet min 200cm2/m Overhang approx. 30 mm 20 Rivets on aluminium Vertical cross section window sill 1 3 5 8 11 15 16 2 0 21 22 c d f Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium profile Aluminium frame system Window sill Facade board Window Corner distance 100-150 mm Ventilation outlet min 200cm2/m Overhang approx. 30 mm Vertical cross section window upper edge (Window recess max 200 mm without ventilation) 1 3 5 8 11 15 16 21 22 2 3 c d f Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Rivet 4.0x20 K14 Aluminium profile Aluminium frame system Facade board Window Insect grating Corner distance 100-150 mm Ventilation inlet min 200cm2/m Overhang approx. 30 mm 21 Screws and rivets on

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steel sub-construction In order to achieve a correct and safe steel sub-construction, the supplier of the system should be consulted. However, there are a few rules to consider when it comes to the functionality of the facade boards: • Length of the steel profiles is maximum 3000 mm (one storey) • The steel profiles must be fixed with one fix-point at the middle or the upper end and all other fixations as sliding points • All joints of the steel profiles must be aligned allowing them to be followed by joints of the facade boards. A board must never cross a joint in the steel profiles. A board must never cross a steel profile joint and be fixed to two separate steel profiles across a joint • The facade boards must be fixed with a fix-point in the middle of the board. All other fixations are sliding points. In case of two intermediate supporting profiles, two fix-points at the same horizontal level are allowed • Every 12 m of the facade a double framing must be installed i

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n order to create a dilatation joint. • Important! Fasten the boards at the fix-point(s), followed by the sliding points above and finally the sliding points below. (The following illustrations show installation with screws – details are similar for rivets) Ceiling 100 mm 30 mm 400 mm Fixing details Vertical board orientation Installation on steel, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø8 Max support distance Max fixing distance Edge distance Corner distance k mm h, g mm a mm c mm 400-600** 400-600** 30-150 100-150* *Overhang e.g. windows or foundations max 200 mm **Depending on windload. Concact Cembrit for further details. Fix Point Sliding point 22 Screws and rivets on steel sub-construction Horizontal orientation Facade boards may be installed in a horizontal position on a vertical sub-structure. On metal framing, the edge distance must be a ≥ 40 mm and corner distance c ≥ 100 mm. Fix Point Sliding

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point Horizontal board orientation Installation on steel, vertical sub-construction Max dimensions 8 x 1250 x 2500/3050 mm Drill hole in the boards: Ø8 Max support distance Max fixing distance Edge distance Corner distance k mm h, g mm a mm c mm 400-600** 400-600** 40-150 100-150* *Overhang e.g. windows or foundations max 200 mm **Depending on windload. Concact Cembrit for further details. 23 Screws and rivets on steel sub-construction Horizontal cross section vertical joint 1 3 5 8 9 21 2 4 a b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Steel profile Edge distance min 30/40 mm Joint width 8 mm Horizontal cross section intermediate support 13 333 353 383 393 321 3 324 3 Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) Facade screw 4.8x25 Facade board Steel profile 24 Screws and rivets on steel sub-construction Horizontal cross section external c

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orner 1 33 35 7 38 39 321 2 34 3a 3b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Steel profile Edge distance min 30/40 mm Joint width 8 mm Horizontal cross section internal corner 1 3 3 3 5 3 7 3 8 3 9 3 21 3 24 3 a3 b3 Load bearing wall Insulation Air gap min 25 mm EPDM underlay 30 mm (optional) EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Steel profile Edge distance min 30/40 mm Joint width 8 mm 25 Screws and rivets on steel sub-construction Horizontal cross section window (Window recess max 200 mm without ventilation) 1 33 35 38 39 321 22 2 34 3a 3b Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Window Steel profile Edge distance min 30/40 mm Joint width 8 mm Vertical cross section horizontal joint 1 3 5 8 9 21 2 4 b c Load bearing wall Ins

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ulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Steel profile Joint width 8 mm Corner distance min 100 mm 26 Screws and rivets on steel sub-construction Vertical cross section foundation 1 3 3 3 5 3 8 3 9 3 18 3 21 3 23 3 24 3 c3 d3 f3 Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Foundation Facade board Insect grating Steel profile Corner distance 100-150 mm Ventilation inlet min 200 cm2/m Overhang approx. 30 mm Vertical cross section roof edge 1 3 5 8 9 19 21 2 4 c d f Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Eave Facade board Steel profile Corner distance 100-150 mm Ventilation outlet min 200 cm2/m Overhang approx. 30 mm 27 Screws and rivets on steel sub-construction Vertical cross section window sill 1 3 3 3 5 3 8 3 9 3 20 3 21 3 22 3 24 3 c3 d3 f3 Load bearing wall Insul

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ation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Window sill Facade board Window Steel profile Corner distance 100-150 mm Ventilation outlet min 200 cm2/m Overhang approx. 30 mm Vertical cross section window upper edge (Window recess max 200 mm without ventilation) 1 3 5 8 9 21 22 2 3 2 4 c d f Load bearing wall Insulation Air gap min 25 mm EPDM underlay 90 mm (optional) Facade screw 4.8x25 Facade board Window Insect grating Steel profile Corner distance 100-150 mm Ventilation inlet min 200 cm2/m Overhang approx. 30 mm 28 Weatherboards Weatherboards are very much used on dormers, eaves, gables, carports, etc. They can be fixed on vertical as well as horizontal sub-constructions. Visible fixing and invisible, concealed fixing are possible. Weatherboards can be cut to size on site, or they can be ordered cut to size from Cembrit. Note! The table below covers weatherboards up to a width of 300 mm with a single side fixing. Wider

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boards should be fixed with double sided fixing in accordance with the fixing details in the table page 9. With this installation method, the board length is limited to max 2500 mm. Fixing details for vertical sub-construction Board Thickness mm Max support distance Min edge distances Drill holes in board k mm 8 a mm m mm Screws on wood and steel Rivets on aluminium and steel 400 25 on wood 30 on aluminium and steel 40 Ø8 on wood Ø8 on steel Ø9 Front view Vertical sub-construction – visible fixing Vertical sub-construction – invisible, concealed fixing 29 Weatherboards Horizontal cross section vertical joint 1 2 4 5 6 8 9 21 a b Load bearing wall Insulation Wind break Air gap min 25 mm Batten min 25 x 125 mm planed EPDM underlay 90 mm Facade screw Facade board Edge distance min 25 mm Joint width 8 mm Vertical cross section invisible, concealed fixing 1 2 4 5 8 9 21 m Load bearing wall Insulation Windbreak Air gap

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min 25 mm EPDM underlay 90 mm Facade screw Facade board Edge distance min 40 mm 30 Weatherboards Vertical cross section visible fixing 1 2 4 5 8 9 21 m Load bearing wall Insulation Windbreak Air gap min 25 mm EPDM underlay 90 mm Facade screw Facade board Edge distance min 40 mm 1 on 2 (double cladding) Fixing details on wood Max support distance Max fixing distance <8 floors Max fixing distance >8 floors k mm Thickness mm b mm b mm a mm m mm c mm Screws on wood Rivets on aluminium Screws on steel 400 400 300 25 40 100 Ø8 Ø9 Ø8 8 Min edge distances Drill holes in board Front view 1 on 2 (double cladding) 31 Weatherboards Horizontal cross section 1 on 2 1 2 4 5 6 7 9 21 a m Load bearing wall Insulation Wind break Air gap min 25 mm Batten min 25 x 62 mm planed EPDM underlay 30 mm Facade screw Facade board Edge distance min 25 mm Edge distance min 40 mm Vertical cross section 1 on 2 1 2 4 5 7 9

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21 b c Load bearing wall Insulation Windbreak Air gap min 25 mm EPDM underlay 30 mm Facade screw Facade board Joint width 8 mm Corner distance min 100 mm 32 Storing, Handling and Processing Storing and handling Cembrit products are delivered with plastic protection cover. If undamaged the plastic cover provides good protection against weather conditions during transportation. Transport and warehousing Cembrit boards should preferably be stored dry under roof and always on a flat and dry level surface on pallets or sleepers with max 500 mm distance. Max 5 pallets in a stack. Note! If stored more than 2-3 weeks the pallets should be kept inside under dry and ventilated conditions. At the building site The plastic cover is for dust protection only. If upon arrival at the building site the pallets are stored outside the plastic cover should be removed and replaced with a tarpaulin leaving the possibility of ventilation around the boards. Note! If stored more than 2-3 weeks the

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pallets should be kept inside under dry and ventilated conditions. Lifting products off the pallet The boards must be lifted off the pallet and not drawn over the next board. This will cause scratches and damages on the surface. Keep the pallets covered with a tarpaulin during storage. Processing Safety As for all other building materials, safety precautions must be taken into account and local laws and regulations must be observed. Cutting and drilling are subject to dust development, and proper precautions must be taken by using appropriate dust extraction equipment. Dust from fibre-cement boards is characterised as mineral dust and a prolonged exposure to this may cause lung disease. Protective foam Cembrit painted boards are equipped with polyethylene foam between the boards for protection of the surface during transportation and processing. Polyethylene is an environmentally friendly polymer which can be disposed of by deposition or incineration. Cutting Cutting to size may be

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done with normal slow or fast running hand tools or stationary equipment. When using fast running tools, dust exhaustion must be employed. All Cembrit boards may be cut with a circular saw or a jigsaw equipped with a diamond tipped blade. Sharp edges are made with fast running diamond tipped tools. Cut edges should be bevelled with sand paper. Note! When using hand tools, cut the boards backside up. When using stationary saw equipment, cut the boards front-side up (the saw blade must always attack the board from the front-side).The periphery speed of the circular saw should be 40-50 m/s. Cutting depth 10-15 mm beyond the board. Fast running electrical equipment Hand held circular saws leave a fine and sharp edge on the boards and provide fine dust. Due to the speed of the blade the dust is dispersed over a larger area. Therefore, it is necessary to establish sufficient exhaustion and if needed the operator should carry personal safety equipment. Operation parameters for Cembrit saw bl

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ades Saw blade Ø mm Ø160 Ø190 Ø216 Ø250 Ø300 Thickness mm 2.4 mm 2.4 mm 2.6 mm 2.6 mm 2.8 mm Hole size mm 20 mm 30 mm 30 mm 30 mm 30 mm Rpm 4800 4000 3500 3000 2800 Alternative equipment Tool Model Saw blade Festool AXT 50 LA TF56, 170 x 2.0 x 30 mm Slow running electrical equipment Normally, slow moving electrical machinery develops heavy dust or chips. Cutting quality depends on the specific tool applied. Operation parameters for stationary circular saw Saw blade Ø mm Rpm 150 230 250 260 300 350 3800 2500 2300 2200 1900 1650 Cut-outs Cut-outs may be made with a jigsaw or a key-hole saw equipped with a hard metal, bi-metal or diamond tipped blade. In order to avoid creating a notch at the inside corner, it is recommended to drill a min 8 mm hole before cutting. Cut edges should be bevelled with sand paper. 33 Storing, Handling and Processing Drilling Drill holes from the front-side with a hard metal drill at 1500 rpm. Always, place

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an underlay, e.g. a woodchip-board, under the Cembrit board in order to achieve neat drilling holes. Cembrit recommends carbide tipped Irwin TCT twisted drill bit (DIN 338) which is available from Cembrit in 7-8-9 mm. The Irwin TCT drill will drill materials up to a hardness of 50 Rockwell C. 8 mm hole Marking Cutting Cleaning of boards after cutting and drilling It is important immediately to remove dust caused by cutting and drilling from the front and back side of the boards with a soft brush/duster or a vacuum cleaner as it otherwise might damage the boards. Ensure that the boards are properly cleaned before installation, and if necessary use clean water or water with a mild detergent and a soft sponge or brush to remove dirt and dust from the surface. Thereafter, wipe the boards with a damp cloth. It may also be necessary to wash the surface after installation, if the building site conditions have been unfavourable. This is done with lots of clean water or water with a mild d

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etergent and a soft sponge or brush and finally wiping the boards with a damp cloth. Removal of calcium based residues Calcium carbonate residue may occasionally be seen on the board surface. This can be difficult to remove with water or even with detergents, because it does not dissolve in water. For cleaning purposes 10% acetic acid (CH3COOH) solution is used to dissolve the calcium compounds. Note! Carefully observe safety precautions (MSDS) when working with acetic acid. R-phrase R36/R38 is valid: “Irritating to eyes, respiratory system and skin“. Use proper clothing, nitrile rubber gloves, eye protection goggles and approved respirator (filter A, E or A/E). Carry out the mixing outdoors. Apply the diluted 10% acetic acid solution evenly with a spray can on the surface of the stained board. Leave it to react for a few minutes. Do not allow the solution to dry, but rinse with lots of clean water. Repeat the process if necessary and rinse with water afterwards. Note! Do not exec

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ute the cleaning process with acetic acid in direct sunlight and on hot surfaces. This might create permanent stains in the surface paint. Cleaning of neighbouring areas Windows and glass in particular but also other adjacent areas must be kept clean during the facade board installation and if necessary protected with plastic film. Alkaline leaching from cement bonded materials (dust from cutting or drilling holes in concrete basic wall, etc.) is prone to damage glass and other materials. Therefore, frequent cleaning during and after the construction period is needed. Surface damages and scratches Damages and scratches should be avoided by lifting the boards off the pallet and handling them carefully during installation. Scratches might leave white streaks on the paint layer which will turn dark when exposed to rain, because the board absorbs water through the scratch. Repair paint is not available. The only way to prevent dark stripes or spots is to carefully apply clear Cembrit Edge

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Sealer onto the scratch with a thin brush. In any case the dark area will diminish after 6 to 12 months, because of the carbonation reactions in the cement matrix of the board. Wet framing at edges or wet spots around screw holes The principles for scratches also apply to cut edges: Carefully apply Cembrit Edge Sealer according to Cembrit instructions. Drill holes for screws and rivets can hardly be sealed, but Cembrit screws and rivets are equipped with sealing washers. When properly installed, the sealing washers will prevent water penetration into drill holes. Behaviour in wet conditions Since the boards are made of Portland cement, their colour may turn darker when exposed to rain, if the board absorbs moisture through holes, scratches or insufficiently sealed edges. This is natural behaviour to any cement based product and it does not affect the integrity or long-term durability of the board. The original colour is restored as soon as the boards dry out. The darkening will show af

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ter heavy rainfall for the first months after installation. It will gradually reduce within 6 to 12 months, because the cement based matrix reacts with carbon dioxide from the atmosphere – carbonation - and thereby reduces water penetration. 34 Storing, Handling and Processing Finishing of edges with Cembrit Universal Edge Sealer Product type Solvent based clear edge sealer for Cembrit Zenit and Cembrit Metro. Usage Cembrit Universal Edge Sealer must always be used to protect all unpainted edges of Cembrit Zenit and Cembrit Metro fibre cement boards. Factory cut edges are always painted. Only Cembrit Universal Edge Sealer should be used to protect the edges of Urbannature products. Surface preparation After cutting, edges must be treated immediately with Cembrit Universal Edge Sealer. Board must be dry. Edges should be bevelled with fine grade sand paper and must be thoroughly cleaned from dust and dirt before applying the edge sealer. Application conditions Board temperature and

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ambient temperature should be +5 °C - +30 °C and relative humidity <85 % . Process temperature must be min +5 °C. Application 1. Shake the edge sealer can well before filling the applicator with edge sealer. Shake the filled applicator also before use if applicator unused for a while. 2. Remove the protective cap 3. Position the applicator horizontally 4. Place the sponge parallel to the board edge and run twice along the edge with a moderate pressure. Note! Carefully prevent the edge sealer to flow onto the front side of the board. Excess edge sealer on front side of the board must be wiped off immediately with a clean cloth 5. Check that the liquid has been applied over the entire edge surface 6. Close the applicator with the cap when interrupting the job 7. Replace the sponge when necessary The boards can be handled 2 minutes after application of the edge sealer. Cleaning No cleaning of equipment necessary. Unintended spillage can be cleaned with wh