Flat Roof Drainage
Poor drainage is the number one cause of flat roof failure. We survey, design, and install drainage solutions that eliminate ponding and protect your roof for decades.
Flat Roof Drainage Services
From blocked drain clearance to full drainage redesigns — we solve ponding problems on all types of flat roof.
Tapered Insulation Systems
Custom-cut insulation boards create falls for drainage without structural changes — ideal for roofs with inadequate falls.
Additional Drain Outlets
Installing extra drainage outlets reduces the distance water must travel and prevents ponding in large roof areas.
Gutter Replacement & Upgrade
Replacing old or undersized gutters and downpipes to handle the full volume of water from the roof.
Parapet Gutter Lining
Lining of deteriorated parapet gutters with GRP or EPDM to prevent leaks.
Siphonic Drainage
High-performance drainage system for large commercial roofs — drains far faster than conventional gravity systems.
Drain Clearance & Maintenance
Regular clearance of blocked drains and outlets — the simplest way to prevent ponding damage.
The Consequences of Poor Drainage
Standing water — or 'ponding' — is one of the most serious problems a flat roof can have. Even a small amount of permanent standing water significantly shortens the lifespan of any waterproofing membrane.
- Accelerates membrane degradation
- Adds structural load to the roof deck
- Supports moss, algae, and vegetation growth
- Can penetrate at upstands and edge details
- Voids many manufacturer warranties
Ponding on Your Flat Roof?
Don't ignore it — contact us for a free drainage survey and solution.