Not every roof window needs replacing when a roof is renewed. Where an existing skylight in Horfield is in good condition, structurally sound and reasonably recent, it often makes more sense to keep it in place and re-integrate it into the new covering rather than replace it unnecessarily, particularly if the existing unit still has plenty of service life left and the frame and glazing are both performing well.
This approach still requires care during the strip-off and re-cover, since the skylight has to be protected while the old covering comes away and the new one goes on around it, with the frame and glazing kept free from dropped debris, scaffold boards and general site traffic throughout. Its existing flashing is generally removed and renewed as part of the process, even if the window itself is being kept, because flashing is tied to the covering it seals against and old flashing rarely integrates well with new tiles, slates, underlay and battens that sit at a slightly different level or profile.
There's also a check on how well the existing skylight's dimensions match the new tile or slate profile being used, since a change in covering type, from a flatter concrete tile to a slate, for instance, can affect how neatly the surrounding courses set out. Where this is the case, some adjustment to the tiling gauge around the opening is usually enough to accommodate the existing window without needing to replace it, avoiding an unnecessary cost for something that's still performing perfectly well.
For homeowners in Horfield who've had a skylight fitted relatively recently and are now having the wider roof renewed, keeping the existing window and simply renewing the flashing and surrounding covering is often the more cost-effective route, and it means the money saved can go towards other parts of the project instead. Brunel Roofing Bristol assesses each existing skylight on its condition during the survey, rather than assuming it needs replacing purely because the roof around it does.
It's also worth having a conversation about warranty and guarantee cover when an existing skylight is being retained. Because the surrounding roof covering is new and typically comes with a lengthy guarantee, it's reasonable to ask how that cover applies around an older window that's being kept, and what happens if a fault later develops at the join between old and new. A roofer who's upfront about this distinction, rather than glossing over it, gives a clearer picture of what's actually being guaranteed once the job is finished, and it avoids any confusion later if a query ever needs to be raised about that part of the roof specifically.
If your roof needs replacing but your skylight doesn't, it's worth having that distinction made clear in your quote. Brunel Roofing Bristol can inspect your existing windows and advise honestly on what needs renewing and what can safely stay in place.
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