Caernarfon at a glance
- Postcode districts
- LL55
- Population
- about 9,730 (GeoNames)
- Council area
- Gwynedd Council
- Building approval
- Gwynedd Council building control, or a registered building control approver
- Nearest main town
- Bangor, about 8 miles
- Guide price region
- Wales (−8% on West Midlands rates)
What flat roof work do we do in Caernarfon?
Liquid-applied roofing
For businesses and landlords in Caernarfon, a cold-applied liquid roof means no flame on site and, with some systems, a short cure time. That can make it easier to work around occupied buildings, tenants and opening hours than a system that needs hot works or a long strip-out.
GRP fibreglass roofing
If a flat roof in Caernarfon has already been patched with fibreglass that keeps cracking, a full GRP replacement on a new, properly fixed deck often solves the problem. Cracks usually come from movement in the boards beneath, so renewing the deck and reinforcing the joints deals with the cause.
Single-ply membrane roofing
On exposed sites in Caernarfon and elsewhere, mechanically fixed single-ply is specified with a fixing pattern based on wind uplift, with extra fasteners at corners and edges. That makes it a strong option for commercial roofs where wind loads are a concern.
All flat roof services in Caernarfon:
- Green and sedum roofs
- Balconies and roof terraces
- Torch-on felt roofing
- Dormer roofs
- Warm roof insulation upgrades
- Flat roof repairs
- Liquid-applied roofing
- Single-ply membrane roofing
- Flat roof replacement
- Flat roof surveys and leak tracing
- Commercial flat roofing
- EPDM rubber roofing
- Flats, HMOs and block roofs
- GRP fibreglass roofing
- Emergency leak repairs
- Garage roofs
- Extension and kitchen roofs
How much does a flat roof cost in Caernarfon?
Guide prices at Wales rates including VAT. New and replacement roofs get a fixed price after a free survey; repair prices are confirmed once we've found the problem.
| Job | Guide price inc VAT |
|---|---|
| Dormer (8 m²), GRP, scaffold | £1,300–£2,450 |
| Extension (20 m²), EPDM, new deck + insulation | £2,600–£4,500 |
| Extension (20 m²), felt, new deck + insulation | £2,500–£4,300 |
| Balcony (12 m²), liquid-applied, scaffold | £1,750–£3,000 |
| Single garage (18 m²), liquid-applied | £1,900–£3,000 |
What flat roofs are typical in and around Caernarfon?
In a town like Caernarfon flat roofs are mostly on lock-up garage blocks on estates and terraced streets with flat-roofed rear kitchens and bathrooms. Weather matters on a flat roof. Wales averages roughly 1,460 mm of rain a year, among the wettest in Britain, so we design for steady run-off: proper falls, clear outlets and upstands well above the finished roof. Approximate 1991–2020 regional averages based on Met Office data.
Who approves flat roof work in Caernarfon?
Where approval is needed it goes to Gwynedd Council building control, or a registered building control approver. Welsh guidance is that most re-roofing needs building control approval, so it's worth checking whenever more than a quarter of a roof is replaced or repaired. How the rules work.
Which places near Caernarfon do we cover?
Flat roofing in Caernarfon: questions
Do you cover Caernarfon?
Yes, including postcode districts LL55. Send your postcode with your enquiry and we'll arrange a survey.
Can you repair a leaking flat roof in Caernarfon?
Yes. We trace where the water is actually getting in first, because the leak inside is rarely under the defect outside, then repair with materials compatible with your roof.
Do you also cover Bangor, Gwynedd?
Yes. Bangor, Gwynedd is about 8 miles from Caernarfon and we cover it too.
What's the best flat roof system for a house in Caernarfon?
For most garages and extensions it's EPDM or GRP; torch-on felt is the budget option and liquid suits detailed or overlay jobs. We recommend one at the survey.