Dome rooflights in Grantham: what is involved?
Thinking about dome rooflights in Grantham? The short answer: polycarbonate and acrylic domes for flat roofs, new or replacement. The longer answer depends on your roof, which is why we survey before we price.
Industrial and commercial units around Midlands towns often still have their original rooflight sheets, which are due for replacement. Dome rooflights suit older flat roofs with yellowed or leaking domes.
Jobs in Grantham are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
Choices for your Grantham project
- Fixed or hinged with vent
- Polycarbonate or acrylic
- Twin, triple or quad skin
- Insulated PVC or GRP upstands
- Fall-through protection mesh
- Quick replacement on existing upstands
- Low cost per unit
What to check first
- Old domes may be fragile — treat as fragile until checked
- Fire classification matters on some roofs
Regulations for dome rooflights in Grantham
For non-domestic buildings, planning depends on the building and its location; building regulations cover thermal performance and the fire classification of rooflights near boundaries. We confirm the route for your building before ordering.
For buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fire classification of rooflight materials near boundaries is checked at specification.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Grantham
Prices below are shown including and excluding VAT. In Grantham, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Dome and new insulated upstand | £955 – £1,675 | £795 – £1,395 |
| Hinged or vented dome Typical | £715 – £1,195 | £595 – £995 |
| Replacement fixed dome | £475 – £835 | £395 – £695 |
How the job runs
- Tell us what you have. Send the NG31 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Grantham, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Related work in Grantham
Questions about dome rooflights in Grantham
Are domes safe to walk on?
No. Treat any rooflight as fragile unless it is specifically certified non-fragile, and never stand on it.
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
Can domes open?
Hinged and vented domes are available, manual or electric.
How do I book a survey in Grantham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Grantham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
