Why Roof with a Silicone/Polyurethane System?
The physical characteristics of polyurethane foam have favored its use in roofing ever since sprayed polyurethane became commercially practical. The use of a silicone weather barrier coating provides an ideal combination of outstanding properties whose advantages include:
Watch the Spray Foam VideoLight Weight
- One inch thickness adds less than five ounces per square foot. For re-roofing an existing gravel roof, it results in a net reduction in total load.
Strength
- Sprayed polyurethane has a very high strength to weight ratio, which adds structural support to most buildings, particularly in pre-engineered metal roofs.
Monolithic
- (No joints) - It's 500,000 closed cells, combined with its tenacious adhesion to most substrates, gives polyurethane a natural stress-transfer characteristic.
Reduces Thermal Shock
- By placing this seamless layer of super efficient insulation on the weather side, it reduces the expansion and contraction of the existing deck and supporting structure, thereby reducing a major cause of roofing failure.
Economical
- A one inch layer of monolithic polyurethane spray foam will reduce or increase (dependent upon the season of the year)inside temperatures by 15 or 20 degrees F. Often, when properly vented, the old insulation becomes effective, and the cost of a major tear off can be eliminated.
Ease of Maintenance
- It effectively seals old leaks (by being non-capillary) and isolates any new leaks that may occur, making repairs a simple task. The System can be easily and permanently repaired with ready-to-use Silicone Construction Sealant.