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Upgrades

Rooflights in flat roofs across Angus

We build and waterproof rooflight upstands across Angus as part of new and replacement flat roofs. Each upstand is insulated, built to the rooflight or lantern maker's sizes and finished with waterproofing that rises around 150 mm above the roof. You get a fixed written price after the free survey.

Rubber membrane being dressed up the timber upstand of a new flat rooflightComputer-generated example image
Guide price
£2,850–£4,950
Survey
Free for new and replacement roofs
Quote
Fixed, in writing
Coverage
England, Wales, Scotland, NI

Angus at a glance

Largest towns
Arbroath, Forfar, Montrose, Carnoustie
Postcode areas
DD
Building standards
Angus Council
Neighbouring areas
Dundee City · Perth and Kinross · Fife · Aberdeen City
Guide price region
Scotland (−5% on West Midlands rates)

How much does a rooflight upstand cost in Angus?

Guide prices including VAT at Scotland rates. The fixed price comes after a free survey for new and replacement roofs.

JobGuide price inc VAT
Extension (20 m²), EPDM, insulation + 1 rooflight upstand£2,850–£4,950
Extension (20 m²), EPDM, new deck + insulation£2,650–£4,650
Extension (20 m²), EPDM with sedum green roof£4,200–£7,700

Which flat roofs are common in Angus?

Flat roofs in Angus sit on low-rise post-war blocks of flats, newer estates where the first extension roofs are now being replaced and 1960s and 1970s link-detached houses with flat-roofed garages and porches. 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 Angus the application goes to Angus Council (building standards). More on the rules.

Why is my flat rooflight leaking, and should it be repaired or replaced?

Most rooflight leaks come from the upstand detail rather than the glass: the membrane has split or pulled away at a corner, the upstand is too low, or the flashing at the top has failed. Repair the detail if the unit and the roof around it are sound.

Drips on the inside of the upstand in cold weather may be condensation rather than a leak, especially on older, uninsulated kerbs or single-glazed domes. Warm, moist air from a kitchen or bathroom meets the cold surface and condenses.

If the roof covering is near the end of its life, it is usually better to rebuild the upstand properly as part of a replacement, ideally with a new insulated kerb, rather than patching the old detail. Our repair or replace guide and flat roof repairs page cover the options.

Which towns in Angus do we cover?

Rooflights in flat roofs in Angus: questions

Which towns in Angus do you cover?

All of Angus. 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 rooflight upstand cost in Angus?

£2,850–£4,950 for a 20 m² insulated EPDM extension roof with one rooflight upstand, at Scotland guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

Which postcode areas do you cover in Angus?

All of Angus, including the DD postcode areas. Send your full postcode and we'll confirm.

Can a lantern go on a warm roof?

Yes. The upstand is built and insulated to the full height of the warm roof build-up, so the lantern sits at the right level above the finished surface.

How high should a flat rooflight upstand be?

Usually at least 150 mm from the finished roof surface to the top of the waterproofing, so the joint stays above standing water. Some rooflight makers specify more.

Why does my rooflight drip in winter?

If it only drips in cold weather and not when it rains, it is probably condensation on a cold, poorly insulated upstand or older glazing. Better ventilation helps, and an insulated kerb and modern unit usually fix it.

Everything about rooflights in flat roofs → · All flat roofing in Angus →

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