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Flat Roofs & Dormers · Brighton & the South East

Flat roofs and dormers

Dormers built, clad and weathered in, and flat roofs decked, insulated and covered. In lead where the building and the budget suit it, in a modern membrane where they do not, and detailed properly either way.

Free quotes · Supply and fit or labour only · Fully insured

Lead-clad dormer built on a tiled roof, Paul Marchant Lead Roofing
Lead-clad dormer built on a tiled roof
What is included

Every flat roof, covered

Dormers built complete

Structure, deck, cheeks, top and the flashings where it meets the main roof, done as one job so there is no argument about whose junction leaked.

Lead-clad cheeks and tops

Cheeks and tops in lead, including curved and ogee shapes bossed on site, which is what most Brighton and Hove period dormers actually had.

Falls designed in

Firrings set so the roof drains to the outlet. A flat roof is never flat, and a roof that ponds is a roof that will fail early.

Insulation and ventilation

Warm deck or cold deck built to suit the structure, with the ventilation or the vapour control layer detailed correctly rather than assumed.

Upstands and trims

Upstands taken to the right height, trims and drips formed so water leaves the edge instead of running back under it.

Lead or membrane, honestly

Lead where it is right and worth it, a good single-ply or high performance felt where it is not. You get told which one your roof suits and why.

Questions

Asked and answered

Should my flat roof be lead or a modern membrane?

Lead is the longest lasting option and the right one on a period or listed building, on a visible roof, and anywhere the detail matters. A modern membrane is cheaper up front and perfectly good on a hidden garage or extension roof. Paul does both and will tell you honestly which one your roof justifies.

How long does a lead flat roof last compared to felt?

Well detailed lead is measured in generations. Modern felt and single-ply systems are typically guaranteed for twenty to twenty five years. That difference is the whole argument, and whether it is worth it depends on how long you are keeping the building.

Why does my flat roof have water sitting on it?

Because the falls are wrong, the firrings have sagged, or the outlet is too high or blocked. Recovering over the top without correcting the falls just means the new covering ponds too, so the timber gets put right first.

Can you clad an existing dormer in lead?

Yes, provided the structure underneath is sound. The cheeks and top get stripped, the timber checked and any rot cut out, then the lead is dressed on with proper welts and an apron into the main roof.

Do you build dormers from scratch as part of a loft conversion?

Yes, the roof side of it: structure, deck, cladding, flashings and making it watertight. The inside fit-out is normally the builder or the loft company, and Paul works alongside them.

Coverage

Flat Roofs & Dormers across the South East

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Based in Brighton

Covering Sussex and the wider South East, happy to travel for the right work.

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