Deck condition checked
We inspect the exposed base before hiding it beneath the new surface.
Drainage details included
We address falls, outlets and edges as parts of one waterproof system.
Weak junctions renewed
We complete upstands and penetrations instead of patching around them.
Replace the waterproof surface and weak base
A flat roof must move water towards its outlets without giving it a route into the property. Persistent ponding, splits, failed edges and repeat leaks can mean the existing surface is no longer doing that job. We treat flat roof replacement in Cardiff as a complete waterproofing and drainage task. After protecting the area, we remove the old covering and inspect the deck and any accessible insulation. A new membrane cannot correct a soft or defective base, so we deal with the required substrate preparation before applying the chosen waterproof layer.
Falls, outlets and edges all matter
The main surface is only part of the roof. Falls guide water, outlets carry it away and upstands protect vertical junctions. Edges and penetrations must also be sealed as part of the same system. We consider the roof's shape, use and existing details when discussing a suitable modern covering category. Once the deck is prepared, we install the new waterproof layer and finish the perimeter, outlets and roof openings. This joined-up approach avoids leaving the most vulnerable details as small jobs for another rainy day.
Frequently asked questions
When is a flat roof beyond a local patch?
Replacement may be more suitable when splits, ponding or surface failure are widespread, edge details have broken down or leaks keep returning. We inspect the full area before recommending renewal.
What happens if the deck is damaged?
We assess the deck after removing the old covering. Defective substrate must be dealt with before the new waterproof layer goes down, otherwise the finished surface may sit over an unsound base.
Which flat-roof system will you use?
We choose according to the roof's shape, use, deck, drainage and detailed junctions. We explain the suitable category after inspection rather than forcing every property into the same system.