What do rooflight upstands & kerbs in Derry/Londonderry involve?
For Derry/Londonderry homes and buildings we offer rooflight upstands & kerbs: insulated kerbs built and waterproofed to suit your rooflight. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Northern Ireland has a mix of terraces, bungalows and rural farmhouses, and rooflights are a common upgrade when extending. Think of rooflight upstands & kerbs for roofs where the old kerb is low, cold or leaking.
We cover all of Derry/Londonderry and the BT48 district, and nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- Internal plaster-box linings
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Raised upstands for deep green or ballasted roofs
- Upstands to suit single-ply, felt, GRP or liquid roofs
- Built square to the rooflight size
- Matched to your roof covering
Things we check at survey
- Membrane compatibility with the rooflight's sealants
- Minimum upstand height is set by the rooflight manufacturer — commonly 150 mm above the finished roof
Planning and building rules for Derry/Londonderry
Northern Ireland's householder permitted development allows rooflights within limits — no more than 15 cm projection on road-facing slopes and a 0.5 m margin from ridge, eaves and party walls. A side-facing window within 15 m of a neighbouring boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
For homes in Northern Ireland, Technical Booklet F1 sets 1.6 W/m²K (or WER Band C) for replacement glazing including rooflights. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
Our planning guide covers each nation in more detail.
Rooflight upstands & kerbs prices in Derry/Londonderry
Prices below are shown including and excluding VAT. In Derry/Londonderry, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or raised upstand | £715 – £1,195 | £595 – £995 |
| Standard insulated upstand Typical | £475 – £715 | £395 – £595 |
| Small upstand on new roof | £355 – £475 | £295 – £395 |
What happens next
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Derry/Londonderry address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
More we do in Derry/Londonderry
Questions about rooflight upstands & kerbs in Derry/Londonderry
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
Can an old upstand be reused?
If it is sound, square, insulated and the right size. Often it is cheaper to rebuild than adapt.
Why is my rooflight cold around the edge?
Usually an uninsulated upstand. Insulating the kerb and lining the reveal fixes most cold spots.
Do you offer rooflight upstands & kerbs in Derry/Londonderry?
Yes. We carry out rooflight upstands & kerbs in Derry/Londonderry and across County Londonderry. Send your postcode and we will offer a survey date when we reply.
Do I need to be at home for the survey in Derry/Londonderry?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
