Spray Foam Insulation Can Help Solve the Problems of Thermal Bridging & Air Leakage
December 1, 2016 | Blog
Construction Canada Magazine Recently Featured Insightful Articles on the Benefits of Closed Cell Spray Foam Insulation
“Reducing the operational energy use and increasing durability should be the prime concerns of architects who wish to design and build ‘green’ building,” according to John Straube, PhD, P.Eng., principal at RDH Building Science and RDH Building Science Labs.
In the Construction Canada article entitled “Rethinking the Residential Wall: Reducing the impact of thermal bridging and air leakage with wall assemblies” new product technologies are enabling high performance home owners to experience savings in operational costs with a lower up-front cost.
The article by Robert Cardinal, B.A.Sc., MPM focuses on wall assemblies that address thermal bridging, air leakage and moisture control through a “systems” approach. Integrated wall assemblies utilizing can meet or exceed new code requirements with a minimum nominal insulation RSI value of R-25, up to R-45 with 2x4 wood framing and the help of SPF.
In another article featured in Construction Canada Magazine (October 2016 issue), the benefits of using Sprayed Polyurethane Foam, as well as construction codes for SPF and installation recommendations are addressed in detail. This is a great article that can give you some insight in determining your options when specifying an Air-Barrier System.
Canadian building codes require all buildings to include an air barrier. An air barrier system consists of building assemblies composed of continuously joined components to primarily control air leakage into and out of the building enclosure.
According to Construction Canada Magazine, "While an air barrier component can be mechanically fastened, fluid-applied, self-adhered, an insulated or non-insulated rigid sheathing, a sealant, or sprayed polyurethane foam (SPF), exterior insulation is becoming essential to achieving energy efficiency targets in commercial and residential construction."
The benefits of an SPF air barrier system include:
- Ensuring occupant comfort
- Preventing ingress of bulk moisture
- Controlling conditions that would lead to interstitial condensation
- Preventing the ingress of soil gases
- Increased energy efficiencies
- Preventing damage to building components
- Reduction of HVAC loads
Construction Canada Magazine states that “low-rise exterior wall air barrier systems incorporating SPF are truly multi-functional…the SPF is self-supporting and the principal component of airtightness; it offers a high RSI-value (R-value) thermal insulation, controlling heat loss from both conductive and convective flows…”
In fact, Green Building Advisor.com claims that “Spray polyurethane foam (SPF) is better than any other type of insulation at reducing air leakage.”
SPF can be used as an air-barrier system on all types of building substrates including CMU, Wood-frame, Concrete, Brick, Steel, etc.
Read the complete article "Choosing SPF as an Effective Air Barrier Component" from Construction Canada magazine here or view the entire Construction Canada Magazine October issue here.
BC Hydro Operations Facility with BASF Sprayfoam Insulation in Port Alberni, BC photos courtesy of Omicron Vancouver.