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COPY THE AUSTRALIANS AND NEW ZEALANDERS Copy the Australians and New Zealanders who use Galvanised or Polyester Coated Corrugated Steel Sheets to cover 99% of their roofs, both domestic and commercial. SLE Cladding Ltd is able to offer a complete cure to desperate UK owners of flat leaking roofs using profiled colour coated steel sheets. This method is particularly suited to commercial buildings and Porto-Cabin type offices and buildings. It can also be used on domestic premises. You will require the services of a competent roofer or builder because all components must be fitted correctly or you will be back to square one. Before proceeding, do check that the structure of the existing flat roof is sound. Please be warned. There is one draw back in the use of profiled steel sheets on house roofs. The drumming noise of heavy rain on the roof will be heard inside the building, even when thick insulation is installed.
If the roof is virtually flat it is best to create a small amount of fall by using treated timber purlins of different depths -2", 3" , 4", 5", 6" etc. Spacing should be closer than normal say 3ft - 3ft 6"(1m). Secure purlins firmly through deck to underlying beams. Insulation quilt can be added between the purlins The void created by the new purlins can be filled with Quilt Insulation. This will help reduce the sound of rain on the sheets and is particularly recommended in the case of most Porto-cabins at the cheaper end of the market as they are notorious for heat loss because of poor insulation. SLE Cladding recommend the use of plastisol sheets, for their longer maintenance-free life span. Plastisol steel sheets should be in one length running from the highest point to the gutter. SLE Cladding Ltd will make them to length. Corrugated or Box Profile may be use. The Aussies use corrugated, which looks better on domestic premises. In the case of corrugated sheets they MUST be overlapped by two corrugations. Also a bead of BUTYL SEALANT MUST be applied between the side laps of both Box Profile and Corrugated sheets. Fix sheets in the normal way, i.e. every other corrugation or profile, top and bottom, and every third corrugation/profile on intermediate bearers. USE Seam Stitchers at no more than 18" centres down the side laps for a secure watertight joint. If the top end or sides abuts a wall, flash with Lead or Lead Look Flashing Tape, or SLE Cladding can make a reverse flashing to fit instead. Foam Fillers may be needed at eaves to prevent the ingress of dust or vermin. If need be SLE Cladding Ltd can custom make Barge Boards to lap over the edge of the sheet down on to a side wall. NOTE . If the roof is in a prominent position, Local authority permission may be needed for change of appearance.
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