CLADDING

8/12/08

This morning we completed our practical cladding assesment, on the steel house frames at the back of the C&J buildings. We did this assignment in pairs and used 6mm mdf in place of real weatherbaords.

SISOLATION AND FLASHINGS

Our first step was to put timber nogs in the corners (internal and external) to ensure that we had something to fix to when we put our baords on. We then put our sisolation on the walls with a 150mm lap to ensure maximum water resistance. We then installed our flashings in the internal and external corners.

CORNER MOULDINGS

We installed corner mouldings, internal and external, so that the weather boards had something to but up to, and to improve the asthetics of the cladding. The internal moulding only have to be a square strip to fit up to corner(eg 30mm x 30mm) The external moulding should be bigger( eg 45mmx45mm) with a rebate down one corner so that it fits onto the corner and can be fixed into the corner stud. These corner mouldings should be installed with 50mm hangover the edge of the floor, so that water is directed away from the building.

CLADDING

The bottom board id the first to go on and should be flush with the bottom of the corner moulding and level. making sure that the bottom board is packed out at the bottom to ensure it carries the same profile as the boards above them. The boards are screwd through the top sheet, just above where the board below would finish. Every few boards you should check for level, ensuring you keep at least a 25mm lap over each board. If joins are needed between corners, boards should be joined on a stud.