- Guide price
- £110–£330
- Repair price
- Confirmed once the leak or damage is found
- Condition survey report
- £140–£290
- Coverage
- England, Wales, Scotland, NI
East Renfrewshire at a glance
- Largest towns
- Newton Mearns, Barrhead, Giffnock
- Postcode areas
- G
- Building standards
- East Renfrewshire Council
- Neighbouring areas
- Glasgow City · Renfrewshire · East Dunbartonshire · West Dunbartonshire
- Guide price region
- Scotland (−5% on West Midlands rates)
How much does a new roof edge or outlet cost in East Renfrewshire?
Guide prices including VAT at Scotland rates. We confirm the price once we've traced the leak or seen the damage.
| Job | Guide 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 East Renfrewshire?
Flat roofs in East Renfrewshire sit on newer estates where the first extension roofs are now being replaced, bungalows with flat-roofed side extensions and dormers and shops with flat-roofed rear stores below 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 East Renfrewshire the application goes to East Renfrewshire Council (building standards). More on the rules.
Why does water sit on my flat roof?
Water sits on a flat roof because it can't drain off fast enough: the falls are too shallow, part of the roof slopes the wrong way, the deck has sagged between joists, or an outlet is blocked or set too high.
Current guidance on flat roof design (BS 6229) means most roofs need to achieve a finished fall of at least 1:80, and roofs are commonly designed with a steeper fall, such as 1:60, so that building tolerances and deck deflection still leave enough slope. Many older roofs were built with less, or have settled over time.
A small amount of water that clears within a day or two of rain is often tolerable. Deeper ponding that lingers adds weight, holds dirt and debris, can shorten the life of some coverings and turns any small defect into a leak. A patch won't fix it, because the problem is the shape of the roof. The fix is to correct the falls, either with firring pieces under a new deck or with tapered insulation in a warm roof, or to add or lower outlets so water has somewhere to go. Our ponding water guide explains this in more detail.
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 East Renfrewshire do we cover?
Edge trims, outlets and drainage in East Renfrewshire: questions
Which towns in East Renfrewshire do you cover?
All of East Renfrewshire. 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 East Renfrewshire?
£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 East Renfrewshire?
It depends on where the roof is: in East Renfrewshire that's East Renfrewshire 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.
Is some standing water on a flat roof normal?
A thin film that clears within a day or two of rain is common and usually harmless. Deeper water that lingers for days points to poor falls, a sagging deck or a blocked outlet and should be looked at.
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.
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.
Everything about edge trims, outlets and drainage → · All flat roofing in East Renfrewshire →