What the job costs in Merthyr Tydfil
Small fixed
Double-glazed fixed unit up to 1000 × 1000 mm, fitted to a ready upstand
Medium fixed
1000 × 1500 to 1000 × 2000 mm, double or triple glazed
Large fixed
Bigger units, solar-control glass, two-person lift or lifting gear
Guide ranges for supply & fit. 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.
Covering CF47 and neighbouring districts
Looking at a property near Merthyr Tydfil but not quite in it? We work across CF47, CF48 and CF44 and outwards to Aberdare, Rhondda and Ebbw Vale. Give us the full postcode when you get in touch, because access, parking and the route for a large unit all depend on the exact street. Those details shape the quote for any job around Merthyr Tydfil.
What we check on a supplied unit
A damaged delivery is a frequent snag on fit-only work. Before the day, unpack a flat rooflight, photograph it, and tell the seller about any cracks or scuffs, because claims are much easier made early. We will also ask for the model or a link, so we can read the maker's instructions and check the builder's opening size and the upstand height it expects. If everything lines up, we fit it. If not, we explain what needs changing first.
On the day, we cover
- Lifting gear or extra hands arranged for large and heavy panes
- Membrane, felt or GRP finished to the frame the way the maker shows
- Reveal lined and trimmed inside, with the glass left clean
- Ceiling and reveal depth — We measure the depth from the kerb top to the ceiling to plan the reveal.
- Solar gain on south-facing roofs — We ask which way the roof faces and how the room is used before suggesting glass.
A typical installation day
Morning first: the team arrives, introduces itself and walks through the job with you. Dust sheets go down in the room below and along the route in. Then the opening and upstand, or the flashing on a pitched roof, are checked against the unit's measurements. A flat rooflight goes in, is fixed to the maker's pattern and sealed into the roof covering. Inside, the reveal is finished as quoted. Before leaving, the team clears debris and talks you through what was done. Most jobs of this type take one day.
Do you need permission in Merthyr Tydfil?
Wales sets energy limits of 2.2 W/m²K for rooflights and 1.4 W/m²K for roof windows, and new rooflight openings generally need building regulations approval. Replacement units are controlled fittings; we are not registered with a competent person scheme, so ours are covered by a building notice to the council. Planning permission is needed for rooflights in conservation areas, National Parks, AONBs and World Heritage Sites. We check which applies and include the fee in your quote.
Help us quote accurately
For fit-only work, the product details matter most: the link, the spec sheet, or a photo of the label on the box. Alongside that, send pictures of the roof and the ceiling below, approximate opening sizes, the type of roof covering, and how someone would get onto the roof. For supply and fit, the same photos and sizes do the job. Finish with your postcode, such as CF47.
Common questions in Merthyr Tydfil
Will my new flat rooflight leak?
A correctly fitted unit should not. Leaks usually trace back to the detail around the frame: an upstand that is too low, a membrane or flashing that is not dressed properly, sealant applied to a damp surface, or water ponding against the kerb. We fit to the maker's instructions and check each of those points. The fitting carries a written workmanship guarantee, with its terms set out on your quote.
Can you replace an old dome without redoing the whole roof?
Usually, yes. If the existing kerb is sound, level and tall enough, a new unit can often sit on it with a fresh seal to the roof covering. If the kerb is rotten or too low, we rebuild it and patch the covering around it rather than stripping the whole roof. This is checked at the survey and included in the written quote, so you know the full scope first.
Do I need planning permission for a rooflight in Merthyr Tydfil?
Often not. Many rooflights fall under permitted development, provided they do not project beyond the national limit and meet the other conditions that apply in Wales. Conservation areas, listed buildings and some flats are different and may need consent. Because the rules depend on the property, we confirm what is likely to apply at your address and point you to the planning authority where an application is needed.
Tell us your postcode, CF47 or close by, and what you want fitted. We will reply with the next steps and a quote.
