Frequently Asked Questions

Click on a topic below to view the answer.

► What is Spray Polyurethane Foam?
SPF is a closed cell roofing material formed by the combination of two liquid components. When these two materials meet in the mixing gun, they immediately expand 20-30 times their volume. The roof is sprayed to the desired thickness, usually 1-2 inches. The entire roof is sprayed to form a seamless monolithic surface including flashing, penetrations and parapet walls; this eliminates seams and cold joints, the major source of roof leaks.
► What kind of roof can be repaired with Spray Polyurethane Foam?
SPF can be applied directly over any roof – BUR, modified bitumen, wood, concrete, asphalt shingles, clay tiles and metal.
► Does my exisiting roof have to be torn off?
In most cases SPF can be sprayed directly over existing roof. The roof must be cleaned of all dirt and debris, if underlying areas are saturated a minimal tear-off may be required.
► Does Spray Polyurethane Foam add weight to my roof?
SPF is lightweight, weighing 8 ounces per square foot, one inch thick. If the roof happens to be tar and gravel all loose gravel will be removed. This will actually remove weight before the foam is applied so this roof will have less weight on it with the Polyurethane Foam over the tar and gravel than it did with just the tar and gravel.
► Can you walk on a Spray Foam Roof?
Within minutes of the application the roof is firm enough to be walked upon. We do ask you to give the coatings 5-7 days to completely cure before walking on the roof too much.
► Will Spray Foam add insulation to my roof?
Yes a SPF Roof will give you an r-value of 7, which makes it the most efficient form of insulation.
► How are Ponding areas addressed?
SPF is seamless so the area that is ponding can be built up to the desired thickness by spraying more foam in the area to assure proper drainage.
► Do I have to use a White Top Coat?
No, the topcoat may be painted to any desired color but remember the white coating further reduces heat load and thermal stress to the roof.
► How do I repair my roof if damaged in the future?
In most cases the damaged area can be sealed with a recommended caulk. Then call you Roof Specialist to inspect it to be sure all damage has been properly completed.
► How long does Spray Polyurethane Foam last?
The SPF Roof will last indefinitely as long as the coating is redone every 8-10 years and any damage done by workers is repaired properly. The mistake people make with their roof is they never pay attention to it, until it starts leaking. Every roof should be inspected yearly by you or a Roof Specialist; this will insure you will find problems before they get out of hand.