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Roofing

How to install membrane on closeboarded roof?

Anonymous user 16/03/2024 - 2.46 PM

Hi, I need to replace clay tiles on a closeboarded roof. I want to keep the boards for building stability, as the building is old and a bit unusual. My question is: Do you put the membrane directly on the closeboards, then battens and tiles on top of that, or do you need to also put battens on the boards, then the membrane, then another batten and the tiles? I want to do this outside bit to building regs, so that later, when I put insulation in from inside, I can get a certificate. Any advice would be very welcome as I can't find it in the building regs docs.

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4 Answers

J R Davis Carpentry and Joinery

Rating: 5 out of 5
Bushey
Ideally counter batten ( vertically) over the close boarding then breathable membrane then battens then tiles. Pull the membrane reasonably taught to allow a gap between the felt and boards to prevent a build up of interstitial condensation that may cause the boards to become damp and rot
Answered5 April 2022
12

A WELLS BUILDING SERVICES

Rating: 5 out of 5
Worcester Park
membrane first then battens then tile
Answered5 April 2022
0

Roofing works

Rating: 5 out of 5
Hayes
hi, breathable membrane , battens and then the tiles. keep some gap between felt and boards to prevent from damps. good luck
Answered20 April 2022
0

Anonymous user

The first answer was correct, counterbatten onto ply board then felt but just instead of rolling it tight to allow air flow it needs some sag as to allow any water to run down without trapping behind the tile lattes and rotting them its just a matter of finding a happy medium nothing exact and ten tile in as usual pretty straight forward for someone to do themselves
Answered22 April 2022
0