- Guide price
- £110–£310
- Repair price
- Confirmed once the leak or damage is found
- Condition survey report
- £130–£260
- Coverage
- England, Wales, Scotland, NI
County Armagh at a glance
- Largest towns
- Craigavon, Portadown, Armagh
- Postcode areas
- BT
- Building control
- Armagh City, Banbridge and Craigavon Borough Council
- Neighbouring areas
- County Down · Belfast · County Tyrone · County Antrim
- Guide price region
- Northern Ireland (−12% on West Midlands rates)
How much does a new roof edge or outlet cost in County Armagh?
Guide prices including VAT at Northern Ireland 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–£310 |
| Localised patch repair | £130–£440 |
| Upstand or flashing repair | £220–£570 |
| Emergency temporary weatherproofing visit | £160–£400 |
| Condition survey and leak investigation | £130–£260 |
Which flat roofs are common in County Armagh?
Flat roofs in County Armagh sit on low-rise post-war blocks of flats, bungalows with flat-roofed side extensions and dormers and 1960s and 1970s link-detached houses with flat-roofed garages and porches. Northern Ireland averages roughly 1,150 mm of rain a year, spread over many wet days, so a roof that sheds water quickly to clear outlets lasts far longer than one that holds puddles. Approximate 1991–2020 regional averages based on Met Office data.
Building control in Northern Ireland
In Northern Ireland, renovating or replacing a roof over a heated room usually means meeting Technical Booklet F1, and building control should be contacted before work starts. Technical Booklet F1 sets roof insulation at 0.18 W/m²K when a roof over a heated room is renovated or newly built, where feasible. In County Armagh the application goes to Armagh City, Banbridge and Craigavon Borough Council. 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 County Armagh do we cover?
Edge trims, outlets and drainage in County Armagh: questions
Which towns in County Armagh do you cover?
All of County Armagh. 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 County Armagh?
£110–£310 for an outlet or drainage repair, at Northern Ireland 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 County Armagh?
It depends on where the roof is: in County Armagh that's Armagh City, Banbridge and Craigavon Borough Council. In Northern Ireland, renovating or replacing a roof over a heated room usually means meeting Technical Booklet F1, and building control should be contacted before work starts. We confirm which applies at the survey.
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.
Do new trims need building regulations approval?
Not usually on their own. Approval only becomes a question if the work is part of a larger re-roofing job or alters the structure.
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 County Armagh →