Repairing roofs with Sprayed Foam.

SPF roofs are considerably easier to maintain and repair than other roofing systems. While Buit-Up roofs and single-plys must be removed and replaced after their usable lives; repairing and recoating an SPF roof enables it to last indefinitely.

Replacing an Existing Roofing System

Because of its light weight, Sprayed Polyurethane Foam can be applied over already existing roof installations. It can be applied directly over asphalt, shingles, built-up roofs, clay tile, concrete, metal, and wood. This saves the need for tear-off, reducing the amount of time, disruption to the business, even the debris in landfills. The roof has to be properly prepared by cleaning off any loose debris and aggregate, and by making sure that it is completely free of moisture.

Repairing a SPF Roof

When a foam roof gets minor mechanically induced damage from equipment or personnel, repairing the roof can be done with a caulking gun. Larger penetrations into the roof can be temporarily sealed with caulking as well, but it is recommended that the contractor should permanently seal the area with a new layer of topcoat.

SPF roofs can sometimes develop blisters, the most common cause of which is due to the presence of moisture. The majority of blisters do not pose a threat to the integrity of the roofing system. Unneccesary repairs to them can result in leaks and premature roof problems. If repairs are warranted, it should be left to the roofing contractor to properly repair them.

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