Multi-Purpose Insulation (MPI) – Works Almost Everywhere

Doubles Effective R-value

As reported by a certified laboratory; on its own or blended with fibreglass insulation, Quik-Therm Multi Purpose Insulation (MPI) doubled the effective R-value of most tested wall assemblies.

Learn more about the effective R-Value

Technical Data & Literature - MPI

Quik-Therm Multi Purpose Insulation (MPI) is a continuous rigid foam insulation consisting of closed cell Type I, Type 2 or Type 3 Expanded Polystyrene (EPS) layered on two sides with durable and flexible polymer facers. MPI meets code compliancy as an air, vapour and/or radon barrier when connections are foamed or taped. MPI is available in rolls and sheets. Optional T&G connections.

Environmentally responsible and recyclable. Low embodied energy.

Quik-Therm MPI does not produce ozone depleting off gasses. It may contain up to 15% recycled expanded polystyrene (EPS). MPI improves lifestyles and comfort while preserving natural resources and the ecosystem.

Professionals - Q&A

What are the best applications for Multi-Purpose Insulation (MPI)?

Steel building roofs and walls, empty cavity walls (all insulation on the outside). Interior and exterior masonry (concrete) walls. Interior vaulted ceilings. Top side roofs (over the substrate). Top side of concrete floors.

Is a double vapour barrier created by adding MPI to a wall with a poly vapour barrier and batt insulation? Can double vapour barriers work?

Yes & Yes. MPI is effectively impermeable. Therefore when designed in conjunction with an interior poly vapour barrier, a double vapour barrier is created. However, walls with double vapour barriers can work. The key is to ensure the thickness of MPI is sufficient to keep the wall cavity warm. By doing so, the risk of condensation is significantly reduced. The thicker the MPI, the warmer the cavity. Thicker is better.

What benefits do Quik-Therm (QT’s) reflective polymer facers provide?

  • Increase durability. QT does not easily chip, crack or break. Easy to cut.
  • With proper detailing (taping), some QT products meet code compliance as part of an air, vapour and/or radon barrier system. See “In The News" – Canada’s Largest Passive House.
  • Enhances the Effective R-value of assemblies.
  • Provides an additional WRB as outlined by Canadian building codes. 

Is Quik-Therm’s ASTM C1363 effective R-value testing accepted by the National Building Code of Canada (NBC)? Can Professionals use effective R-value test results in their designs?

Yes and Yes. As well, based on its tested effective R-value, QT is eligible for government energy savings initiatives such as the Manitoba Hydro Power Smart Program.

Why did Quik-Therm choose the Effective R-value test method ASTM C1363, while other insulation manufacturers typically test their products to the nominal R-value standard ASTM C518?

Quik-Therm tests to both ASTM C518 (labeled R-value) and ASTM C1363 (effective R-value). New Canadian energy codes mandate the use of effective R-value. Since effective R-value is now the standard for R-value performance, QT chose the test method based on the standard.

Can ASHRAE effective R-values for cavity filled walls be added to QT effective R-values?

Yes. Example: ASHRAE Table A3.1D states R-12 fiberglass with wood studs performs effectively at R-9.8. As per C1363 test results, 2” QT performs effectively at R-13.2. Combining the ASHRAE fiberglass results and QT results together = Ru-23. To support Ru 23, QT tested this blended wall assembly to C1363. Result R-23.1. Note: The fiberglass insulation was R-13, not R-12. Potential discrepancy is less than R-1.

Does ASHRAE support the use of Effective R-values?

Yes. ASHRAE 90.1, Table A3.1D (as an example) lists Effective R-values for insulation and framing in above and below grade walls.

What is the nominal R-value for QT Type 1, Type 2 & Type 3?

Type 1 (T1) = R-3.81 / Type 2 (T2) = R-4.18 / Type 3 (T3) = R-4.4

Does QT off-gas and/or lose R-value over time?

No. QT has no Long Term Thermal Resistance loss (LTTR).