Repairing Cracks In Flat Roofs

Felt flat roof repair.

Repairing cracks in flat roofs.

Fill in large cracks with mortar or roofing cement then apply a good concrete primer. The surface may also suffer from dips or hollows. Inspect the roofing for cracks at raised ridges and blistered areas. The trick with any flat roof repair is use the right repair material on the right type of roof.

Suited for repairs to felt concrete and asphalt. Where the flat roof abuts a wall there will be some form of sealing flashing usually a zinc or zinc substitute strip. Cut around the damaged area until the membrane rests flat. Suitable for cracks in felt asphalt and lead.

The best way to repair this flashing is to use one of the proprietary self adhesive repair tapes follow the manufacturer s instructions. And not to use too much of it making it uneconomical messy or potentially more difficult to repair replace professionally later on. As with most temporary flat roof repair work a paint on solution can fix leaks. Grp flat roofs like any other roof need to be taken care of and be maintained properly.

Like all flat roof systems gutters are prone to be blocked and need to be regularly cleaned. Old pour and roll felt roofing can crack get puncture holes usually from impact or the felt could split. In addition to this it is advisable to regularly sweep your roof to clear the build up of any debris such as leaves and dirt. Sometimes doing that is difficult.

This will achieve a much nicer finish. Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it. Typical cracks show up as deep lines in the roofing. Edging can also lift or old flashings against the wall could leak.

For small repairs grind out the effected area back to the board then apply some woven bandage with roofing resin blend the new with the old the best you can applying slightly more resin than required prior to sanding back smooth before you apply the roofing topcoat. For this you will need to first clean the entire roof surface with a pressure washer.