Flat RoofingContractors

Repairs and surveys

Edge trims, outlets and drainage across Suffolk

Across Suffolk, ponding on flat roofs is usually caused by shallow falls, a sagging deck or outlets that are blocked or set too high. A patch won't fix that. We explain whether new outlets will help or whether the falls need correcting with firring or tapered insulation as part of a replacement.

Aluminium drip trim discharging into a new black gutter beside a roof outlet on a rubber flat roofComputer-generated example image
Guide price
£130–£370
Repair price
Confirmed once the leak or damage is found
Condition survey report
£160–£320
Coverage
England, Wales, Scotland, NI

Suffolk at a glance

Largest towns
Ipswich, Lowestoft, Bury St Edmunds, Haverhill
Postcode areas
CB, CO, IP, NR
Building control
Ipswich Borough Council, East Suffolk Council, West Suffolk Council and 2 other councils
Neighbouring areas
Norfolk · Essex · Cambridgeshire · Hertfordshire
Guide price region
East of England (+5% on West Midlands rates)

How much does a new roof edge or outlet cost in Suffolk?

Guide prices including VAT at East of England rates. We confirm the price once we've traced the leak or seen the damage.

JobGuide price inc VAT
Outlet or drainage repair£130–£370
Localised patch repair£160–£530
Upstand or flashing repair£260–£680
Emergency temporary weatherproofing visit£190–£470
Condition survey and leak investigation£160–£320

Which flat roofs are common in Suffolk?

Flat roofs in Suffolk sit on lock-up garage blocks on estates, 1930s semis with flat-roofed garages and kitchen extensions and newer estates where the first extension roofs are now being replaced. The East of England is the driest part of Britain, with parts of the Anglian region around 630 mm a year, so summer heat and UV, not rainfall, do most of the ageing on a felt roof. Approximate 1991–2020 regional averages based on Met Office data.

Building regulations in England

Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In Suffolk the application goes to Ipswich Borough Council, East Suffolk Council, West Suffolk Council and 2 other councils. More on the rules.

Should I fix the edges and drainage or replace the whole roof?

Fix the edges and drainage on their own if the covering is in good condition and the deck is sound. If the covering is near the end of its life or the falls need correcting across the whole roof, it is usually better value to do everything together as part of a replacement.

Trims and outlets are bonded into the waterproofing, so replacing them means cutting into the covering around the edge. On a roof with plenty of life left, that is a worthwhile repair. On an old, brittle covering, the new detail can end up stronger than the roof around it, and correcting falls means taking the covering off anyway. Our repair or replace guide sets out how to decide.

How long do flat roof trims and outlets last?

Properly fixed GRP or aluminium trims and well-installed outlets should last about as long as the waterproofing they are part of. What shortens their life is poor fixing, movement in a rotten deck edge and blockages that are never cleared.

A quick check of outlets and gutters each autumn, and again after storms, prevents most drainage problems. Look for leaves and silt in outlets, gutters pulling away from the fascia, trims that have lifted or split at joints and staining on the wall below the edge. The maintenance guide lists what to check and when. Only check what you can see safely from the ground, a window or a ladder at the edge, and never walk on a roof that isn't designed for it.

Which towns in Suffolk do we cover?

Edge trims, outlets and drainage in Suffolk: questions

Which towns in Suffolk do you cover?

All of Suffolk. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.

How much does a new roof edge or outlet cost in Suffolk?

£130–£370 for an outlet or drainage repair, at East of England guide rates including VAT. We confirm the price once we've traced the leak or seen the damage.

Which council handles building control for a flat roof in Suffolk?

It depends on where the roof is: in Suffolk that's Ipswich Borough Council, East Suffolk Council, West Suffolk Council and 2 other councils. Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. We confirm which applies at the survey.

Can a flat roof be re-laid with better falls?

Yes, as part of a replacement. Falls are corrected with tapered firring pieces under a new deck or with tapered insulation in a warm roof build-up.

Why is my fascia rotting under a flat roof?

Usually because water is getting behind a loose or badly lapped trim, or running back under the edge because there is no proper drip. The fascia and deck edge are replaced and new trims are fitted to stop it happening again.

What's the difference between a drip trim and an edge trim?

An edge trim finishes the edge of the roof and holds the waterproofing down. A drip trim has a profile that throws water clear into the gutter. On many roofs a single trim does both jobs.

Everything about edge trims, outlets and drainage → · All flat roofing in Suffolk →

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