SPF Insulation: 50 years of Industry-Leading Energy Efficiency

Businesses and homeowners alike have relied on spray polyurethane foam (SPF) as the industry leader in roofing material for the past fifty years.
SPF was first developed and tested through Texas A&M in the 1960’s with incredible results in energy efficiency, strength, durability, and flexibility in installation. Its seamless composition is one of the many advantages to creating the best moisture- and weather-resistant roofing solution available on the market today.
What is SPF insulation?
Each SPF insulation mixture is unique to the manufacturer. R&A Contracting is St. Louis’ leading installer of Lapolla Industries‘ FOAM-LOK SPF insulation. FOAM-LOK uses a dual-compound mixture of isocyanate and a polyol blend that expands up to 20 times its liquid density upon contact. The end result is a semi-rigid insulation covering your entire roof, adhering to even the most unique substrate angle or surface material.
The hidden strength of closed-cell SPF insulation
During the curing process, SPF takes only a matter of minutes before it can support up to 90% of its weight load capacity. The secret source of such instant strength is its closed-cell structure. Unlike some other forms of spray insulation, SPF locks gas into closed cells (“closed-cell”) inside the spray insulation. The closed-cell construct is far more energy-efficient with a higher density ranging between 1.5-2.3 lb./cu. ft. SPF’s exceptional insulation value reduces energy costs by up to 40% for many owners without adding any significant volume to your roof’s exterior.
SPF Roofing: Any surface, any angle, any size
The beauty of SPF roofing insulation is that it can be applied to any roofing substrate made of any roofing material across any size available. Our R&A Contracting teams have installed SPF insulation on roofs ranging from only a few hundred square feet to tens of thousands of square feet. The easy application process of SPF allows our teams to cover any roofing surface with efficiency and seamless quality.