Retrofitting with a closed attic assembly will greatly reduce energy loss through air leakage contributed to vented attics. In fact, 40% of energy loss according to the Department of Energy is due to air leakage. This is why energy savings can be so drastic after installing spray foam in the roof deck as a vent-less attic system. Another benefit is effective R-Value as well as radiant heat protection. Most closed-attic assemblies create an attic space that is no more than 5 to 10 degrees different than the conditioned space below.
However, changing the current performance of your house by encapsulating the roof line with air-tight spray foam may not complement current HVAC design. It is highly recommended to have an HVAC specialist examine how your home unit will effectively condition, regulate humidity, and even introduce recovery air into a house with far less air leakage.
Not every house is suitable for a spray foam retrofitted attic. Call us today and we will help you decide if spray foam is right for your energy upgrade.
Crawlspaces retrofitted with spray foam often yield multi-faceted benefits for the homeowner. Effectively managing moisture and air leakage with a vented crawlspace includes spraying the underside of the floor between the joists with vapor-retardant closed-cell foam. Unvented crawlspace design includes polyethylene sheets laid over any bare ground and glued in place along the base of the crawlspace walls with closed-cell foam. More foam is spray applied around the entire perimeter crawlspace wall to ensure a complete air and vapor control system as well as great insulation. The unvented crawlspace design is an effective way to achieve a semi-conditioned area where duct work, HVAC, or other appliances benefit in terms of usage and longevity from the moisture and thermal advantages. Without properly managing moisture levels in a crawlspace there is a high risk for mold and mildew, wood rot, buckling wood floors, and condensation build-up on duct work or HVAC equipment. Let Foam-One-One check out your crawlspace to see if spray foam is the right fit to remedy your under-floor energy and moisture issues.
Unless a major remodel of your house or building will take your walls down to the studs, retrofitting existing walls with spray foam behind sheet rock is a dubious task. Injectable polyurethane foams do exist and are installed by drilling hundreds of small holes through the interior drywall, five to eight penetrations per cavity. Destructive to wall aesthetics, the work leaves behind a significant amount of drywall repair and does so without complete assurance your cavity wall has been sufficiently insulated, especially if insulation is already present in the cavity. The difficulty of retrofitting existing walls is a prime reason to have your walls applied with spray foam during initial construction or during a major remodel where drywall is removed from the studs.