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Lead valley replacement and slate roof batten repairs on pitched roof.
PRODUCTS:

Sikaplan

Single Ply Membrane Roofing System in Southampton

1 April 2026

Replacement of an original lead valley with a new single ply system roof in Southampton


Our client in Shirley Street, Southampton, asked our Bigwood Roofing team to repair a lead valley that had failed in the roof. As the original roof lead was failing in the channel where the two roof slopes meet, there were roof leaks and water management issues occurring which could cause further issues like structural damage and slate tile displacement. Our roofing team stripped the lead valley out and upgraded the roof by installing a new single ply system.


While removing the slates, our team discovered that the felt had deteriorated behind the roof battens. Consequently, we removed both slate sides of the valley and installed a new breathable membrane, treated timber battens, and slates.


Single ply membrane installation for roof waterproofing and flexibility


Single ply membranes increase a roof valley's watertightness because, unlike lead valleys, there are less weak points and seams due to the membrane's continuous waterproof barrier. The material is also highly flexible which means that any movement between roof slopes is absorbed - especially during extremes in temperature over the year. These two factors make single ply membranes a great upgrade to a roof and one that Bigwood Roofing highly recommend!



Single ply membrane roofing specialists in Southampton


Bigwood Roofing are experienced single ply roof specialists and EDPM roofing experts in Southampton, Hamphire and further afield. Just contact us for a free quote!

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