- FAQ -

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Versi-Foam® has approximately twice the R-value, provides an airtight thermal seal, resists moisture and mold, seals hard to insulate areas, adds structural stability, and more - leading to significant energy savings and an overall better return on investment. More "traditional" insulating materials such as fiberglass and cellulose are less expensive upfront; however, Versi-Foam® offers better value in the long run.

Closed cell foam has better thermal properties. The R-value with closed cell foam is typically higher per inch. Closed cell foam prevents moisture and is resistant to mold. Open cell foam allows vapor to pass through is not as durable. The appeal of open cell is its high expansion rate. Less foam is needed which makes it more cost effective. In the presence of moisture, the open cell foam will dissipate the moisture quicker than closed cell foam.

Our patented U-Control dispensing gun provides the user complete control of how much foam to dispense by how hard you pull the trigger on the applicator. The gun allows you to spray foam at a rate of approximately 6 pounds per minute, or so slowly that you can write name with it. It is the key to a consistent spray pattern and surface texture. The metered spray pattern saves material and clean up time.

All Versi-Foam® Closed Cell Systems are water-resistant, but not waterproof. Minimal exposure to moisture will not affect these foams, however the foam may be compromised if submerged under water for a period of time. Conversely, the Open Cell Systems will absorb and retain water if exposed. Therefore the Open Cell Systems should not be used in areas where moisture may be present.

Temperature is key in producing good quality foam. For the majority of the closed-cell Versi-Foam® systems, ideal yield/expansion and adhesion will result when the substrate and chemical temperatures range between 65°F and 90°F. Medium and large sized Versi-Foam® Systems come complete with temperature strips indicating chemical temperature. Consult the operating instructions for specific temperature requirements.

By residential codes, you are required to cover polyurethane foam with a 15 minute thermal barrier. A ½ inch of drywall is the most commonly used. For uninhabited areas, such as attics and crawlspaces that are accessed for maintenance only (not used for storage) you may use an ignition barrier in lieu of a thermal barrier. A thermal or ignition barrier is not required within a sill plate or header as long as the foam is not installed in excess thickness of 3.25". Contact RHH Foam Systems for recommended thermal & ignition barrier products.

A vapor retarder of some degree is required on the warm side of the building assembly. A vapor barrier is defined as a Class I vapor retarder (perm rating less than 0.1) and can be achieved with sheet polyethylene (Visqueen). Versi-Foam closed cell foams will achieve a Class III (1< perm rating <10) vapor retarder rating. Building codes call out for different vapor retarder requirements (Class I, II or III) depending on the region of the country. Consult your local codes as to which level of vapor retarder is required in your area.

Only the System I kits need to be used same day. All larger systems may be shut down and re-used again. If the kit will be used infrequently, a weekly maintenance routine is needed to prevent gun and hose blockage. See the Operating Instructions for weekly maintenance instructions.

Yes, once the foam is fully cured it can be painted with any product that is not heavily saturated in MEK (Methyl Ethel Ketone). This should not be an issue in products made for interior/household applications. Other than the MEK concentration, the type of paint you use should be determined by the easiest method of application (paint, spray, etc) and the desired finish.

Application to existing closed walls is not recommended due to the pressure created by expansion. Damage to drywall and plaster will occur if the cavities are overfilled.

The Department of Transportation forbids refilling tanks. Once completely emptied the tanks should be disposed of as normal industrial waste. A sanitary land fill is recommended.

PEX piping is comprised of a highly-cross linked polyethylene (thermoplastic) material. PEX piping is chemical resistant and will not adversely react with Versi-Foam products. Thermoplastics, such as PEX, when heated in excess of 200 degrees Fahrenheit, could potentially melt. Versi-Foam® generates heat as it cures and we strongly recommend that you dispense no more than two inches in one application. Allow each layer to cure, and add foam to the top of it. One layer of foam will bond completely to the next. Applying the foam in excess thickness of what is recommended could result in temperatures exceeding the ratings of the PEX tubing and possibly melting could occur.

In the past there have been many questions as to whether SPF will corode cPVC piping over time. Two studies have been done and the end result has been that there was no environmental stress cracking of the cPVC when it was insulated with spray polyurethane foam. The first study evaluated the chemical compatibility and simple thermal compatibility on unpressurized pipe and fittings between a wide range of SPF products (low density, medium density, and one component foam). This testing demonstrated that no environmental stress cracking of the cPVC is caused by the SPF products tested. The second study evaluated more extensively the effects of exothermic temperatures from both low density and medium density when applied to a variety of cPVC pipe diameters and thicknesses. This study shows that exothermic heating of pressurized cPVC pipes should not be an issue if the suppliers low density foam is applied 6" or less per pass, and medium density is applied at 2" or less per pass.

Versi-Foam® does not contain any urea formaldehyde, VOC's, CFC's or Penta-BDE's. The use of proper Personal Protective Equipment (PPE) is required during application. Please see the MSDS and Operating Instructions for PPE guidelines.


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