Grantham guide prices
Per flat rooflight
Fit a supplied unit to your prepared upstand, sealed and trimmed
Per roof lantern
Assemble and glaze a supplied lantern on your upstand
Two-person day rate
Fitting team for multi-unit or mixed work
Guide ranges for labour only, ex VAT for trade accounts. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.
Is your address covered?
Distance is rarely the deciding factor. A roof in Sleaford, 11 miles from Grantham, gets the same survey, the same written quote and the same fitting process as one in NG31, NG32 and NG33. What changes the price is the job itself: size of unit, roof type, access and lifting. Newark on Trent, around 13 miles out, is treated the same way.
On the day, we cover
- A short note of anything we found that needs your attention
- Flat rooflights fitted, sealed and trimmed on your kerbs
- Upstands built by us where you would rather not
- Programme and access — We confirm site access, lifting arrangements and working hours before the visit.
- Who weathers the roof — We agree who turns the roof covering up the kerb before we book.
A typical installation day
On the day, you need to be in at the start and at the end. In between, the fitters get on with it. They will want the room below cleared where possible, a parking spot if you have one, and somewhere to set the unit down safely. After checking the opening and the upstand or flashing, they fix a rooflight, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.
Regulations for Grantham properties
England's rules in short: permitted development usually covers a rooflight on a house roof provided it doesn't stick out more than 0.15 m or rise above the ridge, though a listed building always needs consent and some streets have Article 4 directions. Building regulations apply to new openings, and replacements go through building control; as we are not registered with a competent person scheme, we agree up front who notifies it. The energy limit for rooflights in existing homes is 2.2 W/m²K, and the 2026 Approved Document L, in force from 24 March 2027, keeps that figure.
Details that speed up your quote
What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around NG31 and we will come back with a quote or a survey date.
Common questions in Grantham
What if my roof opening is the wrong size for the rooflight?
We find out before the fitting day, not on it. If the opening is slightly out, it can usually be adjusted by trimming or by packing out the upstand. If it is a long way off, the choice is between altering the opening and changing the unit. Bear in mind that rooflights are often sold by builder's opening size rather than external size, so check which one your measurement refers to.
Who deals with building control on trade jobs?
On new-build and extension work the rooflights usually sit within your approval or warrant. On replacements in homes in England and Wales we agree up front who notifies building control; we are not registered with a competent person scheme, so we cannot self-certify.
Can you fit a rooflight in winter or when it is raining?
Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.
Builders and roofers in Grantham: send the spec and the site address for a written trade price.
