Sunday, 16 September 2012

Roofing 12/09/2012

The rest of the fascia's had to be measured and cut, run an eye down them to make sure they were flush and fix any raises/slumps. Once the whole house was incased with the fascia and all was good, we nailed them home and hole punched them back a little. Next step was the roofing, after a quick smoko Cam ran down over the plan then we put it to action. We done the flashing on the tailing side of the house (to help keep the rain out) We put down 8 rolls of roofing paper up into position (running horisontal, over lapping 150mm and 60mm on the edge for over hang) rolling out abit at a time. The first sheet of iron was lifted up, laid flush with the fascia and hung 60mm over the edge (for water to fall off into the spout-60mm regulation) Once all was lined up, a screw was placed 130mm back (into the purlin) on the bottom right corner then one in the top right corner (just 2 tex screws for now) We went through sheet by sheet, just putting on the end tex screws. We got 3/4s of the way through and took a measurement at each end of the roofing sheets to find we were 10mm out on one end. So with 5 sheets left to put up, we moved the butt out every 2mm each time. Once we got to end, we were bang on the mark. And just as we put the last screw in, the rain came down.




We waited til the rain died down then the next stage was to find where the purlins laid under neither, and mark out where the tex screws would go in. Normaly you would use a chalk line but we done it the old fashion, with string line

-run a string line from end to half way Directly over the purlin)
-marked every rise on the edge of the house and every 2nd rise in the middle
-peers went along and put starter holes in
-another team came along and drilled the tex screws in

Roofing isnt just putting some iron down. There are certain rules that everyone has to follow. The roofing paper 150mm over lap and horizontal so if the rain does get through, itl run down to the bottom. With a 60mm hang over so the rain can't come back up, flashing to keep the moisture out. Tex screws every rise on the the outsides so the wind can't pick it up and rip it off. Up turning the outrigger ends so when the wind blows, it can't run up and over into the purlins/walls. Tex screws have a rubber on the bottom of the head so when screwed in, it makes it water tight from rain. When finding your 60mm off the fascia for the roofing over hang, put you square on the rise, rule on the fascia and push down so the roofing is hard flush on the purlin giving you a true reading. Don't use pencil either, the lead in the pencil can rust it-go figure.

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