
Why flat roofs succeed or fail in detail
Specified to the roof
We match the material to the size, use and finish of the roof.
Repair or replace honestly
We assess the deck and membrane before suggesting the right route.
Drainage built in
Falls, outlets and sealed edges help water leave where it should.
Choosing the right system for the roof
Flat roofs are never truly flat if they are going to work well. We install and repair traditional bitumen, GRP fibreglass, zinc, single-ply, asphalt and EPDM systems, choosing the right approach around the roof size, the shape, the expected foot traffic and the finish you want. That matters whether the roof covers an extension, garage, outbuilding or another part of the property, because the wrong system can start causing standing water and early failure surprisingly quickly. With BB Lofts & Extensions Ltd, we look at the whole build-up rather than treating the top layer as the only part that counts.


Falls, drainage and details that keep water moving
Good flat roofing depends on the details. We create suitable falls, set drainage outlets carefully and seal the upstands, edges and rooflight surrounds that usually decide whether water stays out or gets in. Where only part of the roof has failed, we can assess whether a targeted repair makes sense, but if the deck is poor or the membrane is failing more widely, a full replacement is often the honest answer. Choosing BB Lofts & Extensions Ltd means you get a roof specified for the building, not a one-size-fits-all membrane rolled out on hope.
Frequently asked questions
Which flat roof system is right for your property?
It depends on the roof size, shape, expected foot traffic, detailing requirements, finish and the substrate below. We talk through those practical points before choosing between bitumen, GRP, zinc, single-ply, asphalt or EPDM.
Can we repair a flat roof instead of replacing it?
Sometimes, yes. If the problem is local and the deck and surrounding membrane are still in good condition, a repair can make sense. If the failure is more widespread or the base has deteriorated, replacement is usually the more reliable route.
What makes flat roof detailing so important?
Most flat roof trouble starts at edges, outlets, upstands or penetrations rather than in the middle of the field area. Proper falls, sealed junctions and clean drainage routes are what stop water lingering where it should not.

