We're planning an extension that will have a roof with an 18 degree pitch.
At the moment we are considering two roofing solutions:
1. Pre-coloured VM Zinc in Pigmento Green - really gorgeous colour for a garden extension roof. See here>
http://www.vmzinc.ie/build-zinc-systems/surface-appearances-5-preweathered-2.html
2. Small tiles such as these>
http://www.monier.co.uk/products/product-catalogue/product-range/product/mockbond-mini-stonewold.html
Scroll down to "Colour Range: Through Coloured" and click on "Mockbond Mini Stonewold. Tudor Brown 36". A beautiful tile. The seam running through the middle makes it look half the size it is, which is what we would want.
a. What are the pros and cons of zinc (or copper, though that's unlikely to be our choice) versus tiles?
b. Any other tile/slate options that we could consider?
c. How safe are we in the Irish climate going the tile route?
d. Anything else I should be considering?
Thanks.
D.
Just checked the spec for your tiles you they can do 17.5 Degrees need more of a lap and more fixings.
A 100mm is probably the max.The best way to explain I can explain is that tiles have a to lap in relation to their length.If you were to over lap them by more than that, they will not sit flat on the leading edge (the foremost edge of a tile when you look at a roof) .You could see what i mean by using 4 cd covers on a table top arranged with various laps (ignore the first lowest cd/tile). Hope this helps, also if you go off the specs and there was a problem with the tiles in the future you would have no come back with any one,for the ovious reasons.
We used a pvc membrane as an alternate to zinc, its heat sealed as opposed to torch on, looks good, is grey in colour with matching metal edging and can be done in a standing seam detail like zinc....at fraction of cost.
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