Bitumen roof renovation

When this is needed

A bitumen roof rarely fails all at once; it fails over years. The surface goes brittle, seams open, and water finds a way into the structure. Most damage is cheaper to repair while it is still visible on the roof rather than inside the building.

• Damp marks or runs are visible on the ceiling or in the top floor structure.
• The covering is cracked or blistered, or the mineral surfacing has worn away over a large area.
• Water stands on the roof long after it has rained.
• The top edge of an upstand, a drain or a penetration has come loose, or its seal has failed.

What the work includes

1. 01Walking the roof and locating the damage: what is wear and what is a leak.
2. 02A reasoned decision on whether the new covering goes over the old one or the old one is stripped.
3. 03Removing wet or damaged insulation to the extent that it has taken on water.
4. 04Renewing or resealing drains, upstands and penetrations as part of the new covering.
5. 05Documenting the work before and after, so the repaired areas can still be pointed to later.

The extent of the damage often becomes clear only once the covering is opened. We say so as soon as it is visible, and we do not go beyond the agreed scope without discussing it first.