Flat RoofingContractors

Repairs and surveys

Edge trims, outlets and drainage across Argyll and Bute

We repair and replace flat roof trims, kerbs, outlets, gutters and overflows across Argyll and Bute. Many leaks and most cases of ponding start at the perimeter or with poor drainage, so we check how water moves across the roof before recommending a fix. You get a fixed written price before any work starts.

Aluminium drip trim discharging into a new black gutter beside a roof outlet on a rubber flat roofComputer-generated example image
Guide price
£110–£330
Repair price
Confirmed once the leak or damage is found
Condition survey report
£140–£290
Coverage
England, Wales, Scotland, NI

Argyll and Bute at a glance

Largest towns
Helensburgh, Dunoon, Oban
Postcode areas
G, PA
Building standards
Argyll and Bute Council
Neighbouring areas
West Dunbartonshire · East Dunbartonshire · Glasgow City · East Renfrewshire
Guide price region
Scotland (−5% on West Midlands rates)

How much does a new roof edge or outlet cost in Argyll and Bute?

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

JobGuide price inc VAT
Outlet or drainage repair£110–£330
Localised patch repair£140–£480
Upstand or flashing repair£240–£620
Emergency temporary weatherproofing visit£170–£430
Condition survey and leak investigation£140–£290

Which flat roofs are common in Argyll and Bute?

Flat roofs in Argyll and Bute sit on bungalows with flat-roofed side extensions and dormers, newer estates where the first extension roofs are now being replaced and low-rise post-war blocks of flats. Scotland averages roughly 1,570 mm of rain a year, with the west far wetter than the east, so drainage, falls and wind uplift are part of every specification we write. Approximate 1991–2020 regional averages based on Met Office data.

Building standards in Scotland

In Scotland a building warrant is usually needed for alterations, structural work and new roofs; like-for-like repairs to a covering can be exempt. Section 6 of the technical handbooks sets a domestic roof benchmark of 0.12 W/m²K, applied as far as reasonably practicable on an existing roof. In Argyll and Bute the application goes to Argyll and Bute Council (building standards). 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.

Do flat roofs need overflows?

Roofs that drain to internal outlets or behind parapets should normally have an overflow, so that if an outlet blocks, water spills somewhere visible instead of rising over the upstands and into the building.

An overflow is usually a spout or weir set through the parapet or kerb at a level below the top of the upstands. When water runs from it, that is a sign the main outlet is blocked or overloaded. On a simple roof that drains over a drip trim into an external gutter, the open edge itself does the same job.

We look at where the water goes in heavy rain, how many outlets the roof has for its size, and whether the outlets, hoppers and downpipes are clear and properly connected. Leaf guards on outlets help on roofs near trees, as long as they are cleared regularly.

Which towns in Argyll and Bute do we cover?

Edge trims, outlets and drainage in Argyll and Bute: questions

Which towns in Argyll and Bute do you cover?

All of Argyll and Bute. 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 Argyll and Bute?

£110–£330 for an outlet or drainage repair, at Scotland guide rates including VAT. We confirm the price once we've traced the leak or seen the damage.

Which council handles building standards for a flat roof in Argyll and Bute?

It depends on where the roof is: in Argyll and Bute that's Argyll and Bute Council. In Scotland a building warrant is usually needed for alterations, structural work and new roofs; like-for-like repairs to a covering can be exempt. We confirm which applies at the survey.

Can you add a new outlet to an existing flat roof?

Usually, yes. The outlet is cut in at a low point, connected to a downpipe or gutter, and the waterproofing is dressed into it with compatible materials. Whether it solves ponding depends on whether water can actually reach it.

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.

How often should flat roof outlets be cleared?

At least once a year, ideally in autumn after the leaves fall, and more often for roofs under trees. A quick check after heavy storms is also worthwhile.

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

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