Spray Foam Made Easier
on Thursday December 29th '11, 11:37 am
Cold Weather Tips for Versi-Foam Systems
on Wednesday October 26th '11, 3:12 pm
It's that time of year when cooler temperatures can affect the performance of your Versi-Foam System. To ensure peak performance of your system and quality foam production here are a few helpful reminders...
Never store Versi-Foam products in temperatures less than 40 degrees Fahrenheit. Storing at these temperatures would cause the chemicals to freeze. The "A" component would freeze and crystallize, creating blockages in the dispenser. Once this occurs, it cannot be fixed.
Always warm the chemicals to a temperature between 65-90 degrees Fahrenheit. Be sure to check the temperature sensing strip to be sure it is well into the green zone. During application, continue to monitor the temperature of your chemicals. If it begins to move toward the blue zone, warm the chemicals again.
If you've warmed the chemicals artificially, be sure to shake them well before using to make sure that the temperature is uniform throughout the tank. Cold chemicals will result in foam that is "A" rich which will be darker and have a crunchy surface.
For best yield, it is recommended that the surface temperature onto which you are applying the foam be within 65-90 degrees Fahrenheit. Colder surface temperatures will result in a lesser yield and possible adhesion problems.
Spray Foam Insulation for Basements
on Friday September 16th '11, 11:59 am
Air leakage within the building envelope can account for up to a 30% yearly increase in energy costs. In simple terms, cold air infiltrates the basement (thru gaps, cracks, or the exterior walls), then rises through the home (creating drafts) and exits through the attic. This is known as the stack or chimney effect. To reduce this effect and maximize your energy savings, sealing up these air leakage areas is recommended.
The biggest leakage areas in the basement are the sill plate and rim joists. The rim joist is the board nailed to the ends of your floor joists in the basement, cellar or crawlspace (the perimeter framing). Outside air can be drawn in through the cracks that exist above and below the rim joist and the sill plate it sits on. To seal these cracks, install Versi-Tite one component foam for cracks 1" or less or for larger openings use Versi-Foam Class I spray foam products. When using Versi-Foam Class I spray foam in this application make sure not to install more than 3.25" depth. Residential codes require a thermal barrier to be installed over the foam applications where it is sprayed in excess of 3.25" in depth.
Also remember to seal around any utility penetrations that pass along to the outside (including dryer vents or other ductwork, electrical wiring/conduit, phone, gas, cable or water utility related pipes).
Spray Foam Insulation for Attics
on Friday August 12th '11, 1:50 pm
As we get ready for fall, now is the time of year people start thinking about properly insulating their attic before we are faced with the cold temperatures of winter. We frequently field the question, "Is it better to spray foam the attic floor or the underside of the roof?" These are the two common methods for insulating attic space. Depending on who you talk to you will most likely get different recommendations.
By spray applying the foam to the attic floor (vented system), you are sealing the attic off from the rest of the house. You are venting the attic and only heating and cooling the area you live in.
By spray applying the foam along the underside of the roof decking (unvented system) you are creating a conditioned space with in the attic which helps insulate the space from heat penetrating through the shingles and roof. For homes with HVAC equipment located within the attic the spray foam on the underside of the roof helps eliminate energy losses in the equipment. One thing we do recommend with this method is checking with the manufacturer of the roofing materials as we've heard of cases where manufacturers won't warrant their product with spray foam applied to the underside. If the material is asphalt some manufactuers claim that it creates a "hot" roof which diminishes the life span of the shingle. Other manufacturers believe it's fine, so it's best to check first.
For more information about each of these methods, here is an informative article from sprayfoam.com: