Multi-Purpose Insulation (MPI) – Impermeable

Rugged. Durable. Semi-Flexible. Impermeable.

Achieves code compliance as an all-in-one air, vapour and radon barrier and continuous insulation system. 4×8 sheets. Thicknesses up to six inches. Compressive strengths up to 40 psi. Optional tongue and groove connections.

Quik-Therm MPI meets the requirements of ASTM E2178 “Standard Test Method for Air Permeance of Building Materials” as outlined in Section (Division B) of the National Building Code of Canada, 2015.

– QAI Laboratories

Quik-Therm MPI meets the requirements of ASTM E96 “Standard Test Method for Water Vapor Transmission of Materials”. Based on the results of ATI testing, Quik-Therm MPI satisfies the water vapour permeance of CAN/CGSB-51.34-M.

– Morrison Hershfield

Cold climate tested

Quik-Therm Insulation Solutions Inc. has undertaken a program of full scale thermal performance testing to ASTM C1363-05 Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies. Temperature range: Outside -18C/Inside +21C with a 22 KPH wind/-31 wind chill.

– Mark Lawton, Senior Building Scientist, Morrison Hershfield

MPI Science & Technical Data

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.

Environment. Sustainability. Health.

Quik-Therm’s expanded polystyrene (EPS) core comprises of 98% air captured within a 2% cellular matrix. Food grade quality polymer facers are heat sealed to both sides of it’s core. Water used in the manufacturing process is recycled and re-used many times over. Quik-Therm will not degrade and does not contain or use ozone depleting chemicals. Quik-Therm may contain up to 15% pre or post consumer recycled EPS. EPS has received an A+ rating for most environmental matrices.

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).