Repair or replacement of roof valley systems. Covers lead, GRP, and mortar valley types with targeted repair or full replacement where lifespan is exceeded.
Typical cost
£1,200 — £2,500
Typical duration
1-2 days
Scope type
flexible
Typical tasks
Access valley and inspect full length
Remove tiles adjacent to valley
Strip out old valley material
Install new lead, GRP, or mortar valley
Re-lay tiles and bed verge tiles at valley feet
Extras & additional works
Based on a standard valley length of 5-10 metres. Costs may increase if scaffolding is required for access or if additional structural repairs are needed.
Common questions Stainesai
The cost can be affected by the valley length, material choice (lead, GRP, or mortar), access difficulty, and whether scaffolding is needed.
Common materials include lead, GRP (glass-reinforced plastic), and mortar, each offering different durability and cost options.
Roof valleys should be inspected annually and after severe weather to ensure they are free from debris and damage.
Building regulations apply if structural changes are made during valley repair and replacement. It's important to ensure compliance with local building codes. Always confirm with your roofer before work begins.
The process involves inspecting the valley, removing adjacent tiles, stripping old materials, installing new valley systems, and re-laying tiles. Like-for-like valley repairs generally do not require planning permission or Building Regulations approval unless structural changes are involved. For listed buildings or properties in designated areas, additional restrictions may apply. Always confirm with your roofer before work begins.
Ready to post a valley repair & replacement job?
Describe what you need. Stainesai structures it into a proper scope. Your first job post is free.