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T Pren all to LSA Guidelines. :wink:

Used them to make this one, bars came in at £800 for both sides.

Its quite simple, GRP doesn't have the thermal movement ability of most flat roof systems, the deck has more. When one moves at a diferent speed to the other, you get noise. Same as when an old house creaks in the evening, its contracting due to cooling.

:mrgreen: They don't have any.

He's not a roofer.

http://www.architecturalproducts.co.uk/apc50-glazing-bars

Twice as long as ? A system that involves a half day training course, or a system installed by a roofer?

GRP does not have the thermal expansion abilities of a proper roof, it should be installed on a slip layer. Give it a few years and it will fracture, because its ****.

I have zero confidence in the whole thing. Its your dime, get your moneys worth.

You won't learn how to be a Roofer in 2 weeks, you start at the bottom and if you're lucky, a time served old boy will teach you the right way. You could do an EPDM course, thats only 4 hours ! :mrgreen:

Yes, Felt is the best all rounder. Why are they decking it? has your deck gone? Or is it to give them a surface for the GRP. GRP by the way is ****e.

You won't see the felt from outside. Only the trim. Single ply has a habit of blowing and slumping on vertical.

Speak to the CITB and see who they recommend in your area.

This is all you need to do, DPM underneath then negated. Lead pipe slate.

**** work :twisted:

You're roof is not too bad, the soldier course can stay, it just needs the waterprofing going to the edge and terminating in a trim. Stones off and an overlay in HT felt with new lead slates and flashing internally. 2k tops. High Teck ? :lol:

NW London ? You can see the deck has slumped under the Asphalt, so it will need a full re roof. Budget £100 m2

If you get the GRP one and use more fixings, it will follow the contour of the stone. A bead on the back then another in the rebate once fixed.