FAQ

spray insulation

SPF Building Insulation FAQ's
How does SPF reduce energy use in buildings?
  • SPF provides a continuous air barrier.
  • SPF prevents moisture infiltration through air leakage.
  • SPF minimizes dew point problems and condensation.
  • SPF avoids thermal bridging.
  • SPF resists heat movement in all directions.
  • SPF provides reliable performance under varying conditions.
SPF Building Insulation FAQ's
What is the difference between a vented and unvented attic

Unvented (conditioned) attics use air-impermeable insulation as a barrier to prevent moisture condensation on the underside of roof decks. Vented attics minimize condensation by allowing the escape of moisture to the exterior by air flow.

SPF Building Insulation FAQ's
If you spray the underside of a roof deck with SPF insulation, should you vent the attic?

No, the application of SPF insulation to the underside of the roof deck minimizes the potential for condensation. The SPF insulation develops a thermal and moisture gradient that avoids the development of dew point conditions in the attic. Because of this, moisture won't condense or accumulate and, therefore, does not need to be vented to the exterior.

SPF Building Insulation FAQ's
Do you need a vapor retarder or a vapor barrier with SPF insulation?

It depends of the use of the building, the climate and the materials of construction. In normal occupancies and moderate climates, SPF insulation typically does NOT require a vapor retarder. Extremes of climate and building use may require vapor retarders/barriers. Superior Spray Foam's knowledgeable team is happy to provide you with the most up-to-date information on SPF building requirements for your specific project and area.

SPF Building Insulation FAQ's
Is SPF a good soundproofing material

Both low and medium (2lb/cubic/ft) density SPF effectively reduce noise from outside sources by sealing cracks and gaps that allow sound to travel through the walls, floors and ceilings into the building. They are less effective against noise caused by vibration.

SPF Building Insulation FAQ's
What is the difference between low density, open cell SPF and medium density closed cell SPF?
  • 1/2 lb Spray Polyurethane Foam (SPF)
    Low density, open cell SPF refers to a generic spray polyurethane SPF that weighs between 0.4 to 0.6 lbs per cubic ft when fully cured. It is spray applied to a substrate as a liquid and expands about 100-150 times its original volume to form a semi-rigid/flexible, non-structural SPF insulation. The SPF has an R-value around 3.5 per inch and typically uses water as the blowing agent.
  • Medium Density, Closed Cell Spray Polyurethane Foam (SPF)
    Medium density, closed cell SPF used in interior applications typically refers to generic spray polyurethane foam that weighs between 1.5 to 2 lbs per cubic ft when fully cured. It is also spray applied as a liquid to a substrate and expands about 35 to 50 times its original volume to form a rigid, structural SPF insulation with a compressive strength between 15 to 25 PSI. The SPF has an R-value of around 5.5-6.0 per inch (aged R-value) and uses high R-value blowing agents.
SPF Roofing FAQ's
How long does a spray polyurethane foam (SPF) roof last?

The oldest performing SPF roofs are over 30 years old. Because the physical properties of the SPF change little with age, how long the SPF roof system lasts depends primarily on the original application (both product and applicator quality) and long term maintenance.

SPF Roofing FAQ's
How do you maintain a SPF roof system?

SPF roof systems are among the easiest type of commercial grade roofing systems to repair and maintain. Like all types of commnercial roofing membranes, SPF roofs should be inspected semi-annually and after events that could cause physical damage. Although not common when top quality roof urethanes and coatings are used, punctures can be quickly and easily repaired with an elastomeric sealant compatible with the SPF and coating system. More extensive damage can be repaired by reapplying SPF.

SPF Roofing FAQ's
Where can I use a SPF roofing system?

SPF has excellent adhesion to a variety of substrates including, BUR (Tar & Gravel), Torched-on, clay and concrete tile, metal, wood, EPDM/PVC membrane, and concrete. SPF roofing systems are often used as recover system over existing roof coverings.

SPF roofing systems excel where:

  • Additional insulation is desired.
  • The roof substrate has many penetrations;
  • The roof deck is an unusual shape or configuration;
  • The roof is in a severe weather environment, (hurricanes, hail, etc)
  • Lightweight materials are required.
  • It is desirable to keep existing roof covering
SPF Roofing FAQ's
What are the environmental limitations of installing SPF roofing systems?

As with other roofing systems, SPF can be applied in a wide variety of climatic conditions. Follow the manufacturer's recommendation for ambient conditions. The SPF and protective coating should not be installed when there is ice, frost, surface moisture or visible dampness present on the surface to be covered. Barriers may be necessary if wind conditions can affect the foam quality or create over-spray problems.

SPF Roofing FAQ's
How do SPF roof systems compare in cost to other roof systems?

SPF roofing systems are among the lowest life cycle cost commercial roofing systems available today. SPF roof systems cost between 10% and 50% less on average than comparably insulated membrane roof systems.

General FAQ's
Why do you need coatings or coverings over SPF?

SPF is water resistant without other coverings, however, the surface of SPF can deteriorate under the sun's ultraviolet (UV) rays. Superior Spray Foam uses only the absolute best quality and longest lasting elastomeric coatings available in today's SPF coatings industry.

General FAQ's
How long has SPF been around?

Spray polyurethane foam was first used commercially in the US in the 1960s for cold storage and industrial insulation projects. SPF roofing systems evolved from exterior applications to tanks and pipes in the late 60s to early 70s.

General FAQ's
How do I select a contractor?

As with any construction trade, a quality contractor will be financially stable, have highly trained crews and a good reputation with their customers and suppliers. So check out all of these elements. Superior Spray Foam provides top quality polyurethane foam and coating services via offices located from Ontario to British Columbia, and is always proud to provide real customer references upon request.

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SUPERIOR SPRAY FOAM

Toll Free (Saskatchewan): 1 (866) 566-7077 Fax: (306) 242-4415
#80 - 3924 Broadsky Ave, Saskatoon, SK, S7P 0C9
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