What do rooflight upstands & kerbs in Hatfield involve?
Rooflight upstands & kerbs in Hatfield means insulated kerbs built and waterproofed to suit your rooflight. We cover the AL10 district and the rest of Hertfordshire, with a survey before any price is fixed.
Orangery-style extensions with lanterns are popular across the South East, and solar-control glass makes a big difference on south-facing gardens. Typical uses for rooflight upstands & kerbs include new flat-roof openings and rooflight replacements.
We work across Hertfordshire, including Hatfield, and in neighbouring towns such as Welwyn Garden City and St Albans. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Hatfield project
- Internal plaster-box linings
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Raised upstands for deep green or ballasted roofs
- Timber upstands with insulation
- Correct height above the finished roof
- Built square to the rooflight size
What to check first
- Membrane compatibility with the rooflight's sealants
- Insulation continuity around the upstand affects condensation
Planning, building control and Hatfield
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Our planning guide covers each nation in more detail.
Guide prices for Hatfield
Guide prices for rooflight upstands & kerbs in Hatfield are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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.
Rooflight upstands & kerbs near Hatfield
Related work in Hatfield
Rooflight upstands & kerbs in Hatfield: questions
Can I build the upstand myself?
Your builder can, to our drawing. We check it before the rooflight is fitted, because the unit must sit square and level.
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
What roof coverings do you work with?
Single-ply, EPDM, felt, GRP and liquid-applied systems — or we coordinate with your roofer.
Is the survey in Hatfield free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do you offer rooflight upstands & kerbs in Hatfield?
Yes. We carry out rooflight upstands & kerbs in Hatfield and across Hertfordshire. Send your postcode and we will offer a survey date when we reply.
