Fixing guide 1 Roofing product catalogue 1

Cedral Lap and Cedral Click The ideal, low maintenance, rot-free alternative to traditional timber weatherboarding. With the visual appeal of natural timber, simplicity of installation and resistance to rot, Cedral is an attractive, low maintenance alternative to PVCu. Contents 4 Product features Cedral Lap and Cedral Click System principle 10 Storage and handling 12 General fixing information 18 Installing Cedral Lap 42 Installing Cedral Click 54 Preventing efflorescence

Product features Product features > Choice of two applications within the range (Click and Lap) > Resistant to rot, immune to attack by pests and insects > Stands up to the harshest weather conditions > No routine maintenance required > Easy to install > Range of complementary aluminium trims available > Use in the same way as wood > Class 0 and EN 13501-1 fire performance and classified to A2-s1, d0 limited combustibility > Ideal for use where traditional timber boards might be used, especially for facades and window and door surrounds > Can achieve an A+ rating in the BRE’s Green Guide to Specification*...

Ideal low maintenance, rot free alternative to weatherboarding. Fitted in traditional lapped style and with the visual appeal of natural timber, Cedral Weatherboard is an attractive, low maintenance alternative to all types of weatherboarding. Cedral Click Cedral Click is the UK’s first fibre cement tongue and groove weatherboard solution. With the same performance benefits and textured surface finish as Cedral Lap, Cedral Click is supplied with a simple ‘Click Clip System’, which makes installation quick and easy. Cedral Lap and Cedral Click Fitted in a contemporary flat finish rather than traditional...

Cedral Click Installed weight Bending strength: Longitudinal Transverse Modulus of elasticity: Longitudinal Transverse Expansion from dry air to saturated Thermal conductivity Reaction to fire: Building Regulations

Cedral Lap and Cedral Click are installed to the ventilated rainscreen principle. This means air can flow in at the base of the system, behind the cladding and then out, over the top of the Cedral weatherboard system. System principle System principle: ventilated rainscreen A minimum 30mm ventilation gap must be left behind the boards with a minimum 10mm continuous gap left at the top and bottom of the system for full circulation. The air flow behind the Cedral weatherboard enables the system to remove moisture. Impeding this process could lead to moisture problems within the system.

* Woodstain finish Mineral tones Forest tones Earth tones Cedral Lap colour range

Ocean tones Cedral Click colour range C01 White

Storage and handling Storage Cedral should be stored under cover on the pallets on which they are supplied. Any temporary transportation hoods should be removed to release any trapped moisture and the pack recovered with an opaque tarpaulin. The boards should be protected from mud staining. Ensure sufficient bearers, stack on a level surface and never stack against a wall Store under cover Must be protected from the weather

Care should be taken at all times when handling Cedral on the flat, as it can break. While Cedral is stored on the flat, it should be fully supported along its full length on purpose designed pallets. Manual handling is best carried out with the boards carried on their sides. When a single person is carrying a board, it should be turned on to its side before being lifted off the stack, and then the handler must keep their hands as far apart as possible to provide maximum support for the board. Do not drag sheets off the stack Sheets must be lifted off the stack Carry on edge but do not store...

General xing information | Screwing and Nailing 12 Cutting Screwing Nailing Scoring/breaking Health and safety Wind loading Surface mounted features Ventilation

The method of cutting is dependent on the amount there is to be done. It is possible to cut the board with a handsaw, an electric jigsaw or a circular saw. Note: Cutting and drilling must take place in a dry environment Handsaw This method requires a hardened point saw and is recommended for small amounts of cutting. General xing information | Cutting Cedral can be cut with a specially manufactured guillotine. Hand held circular saw Using a hand held circular saw gives the best results and is the recommended method of cutting large quantities. The grade of dust is 36-44 grit; these blades are...

General xing information | Screwing and Nailing Screwing Screw fixing to the support structure can be achieved without pre-drilling where fixings are at least 50mm from the end of the board (screw gun required). Where screws are to be within 50mm of the end of the board then a pre-drilled hole and countersink is required to suit the screw size. Screws must be stainless steel min. size 4.0 x 45mm. The following minimum distances from the edge to the screw and nail must be respected. D1 Nailing By hand The board can be hand nailed without pre-drilling when the nails are at least 50mm from the end...

Cedral can be pneumatically nailed. There is a large selection of guns on the market. Stainless steel fixing is a must, as they last as long as the board. The nail length should be 50mm and be 2.8mm dia. A ring shank nail is preferred and has a full round head of 7mm dia. The type of gun nail which has a narrow head (The nail looks more like a “T” section) is not acceptable. Nails with a “C” shaped head are acceptable but should be minimum 7mm-dia head. General xing information | Nailing Pneumatic nailing Trial nailing should be conducted to set the depth of the fixing, and how close to the edge...

General xing information | Other considerations Scoring/breaking Cedral can also be scored on both sides with a Stanley knife and then broken over a hard edge. This process is only used for edges which are hidden by corner or end profiles. Not recommended for mitre corners as the break is not as clean as a saw cut. Health & safety Dust can be released while the sheets are being processed which can irritate airways and eyes. It is recommended that a dust mask and safety goggles be worn. Appropriate dust extraction or proper ventilation is to be provided depending on the room in which the work...