ThermalGuard™ OC.5 & OC.5X



ThermalGuard OC.5 & OC.5X

ThermalGuard OC.5 is a high-yield, open cell, Class 1 fire-rated, 100% water-blown spray polyurethane foam insulation designed for use in residential and commercial walls, attics and roof decks. When applied, ThermalGuard OC.5 expands to over 100 times in size in approximately 4 seconds, filling and sealing building cavities of any shape and size. It is sprayer-friendly, offering a wide application window and temperature tolerance and excellent adhesion when installed in cold temperatures down to 15°F.

ThermalGuard OC.5 seals and insulates in one step, helping property owners reduce energy consumption by up to 50% when compared to conventional insulation systems. Its superior thermal insulation, sealant and sound attenuation properties contribute to a healthy, quiet and more energy efficient building.

ThermalGuard OC.5X has a 4.2 R-Value and is Appendix X compliant.

Quick Stats


Tensile Strength (PSI)


Compressive Strength (PSI)


Water Vapor Permeability (PERM)


Air Leakage (L/S/M2 @ 75 PA @ 3.5″)

Class 1

Fire Rating

≤ 25

Flame Spread Index

≤ 450

Smoke Development Index

Seals & Insulates in One Step


Saves up to 50% on Heating & Cooling Costs


Reduces Heating Costs


Applied Using Water as the Blowing Agent


Adheres to Virtually Any Surface


Great for Insulating Hard-to-Reach Areas


Open Cell Advantage

Interlocking air bubbles expand over 100 times their original size in about 4 seconds to create a soft, spongy, insulating barrier.  Open cell spray foam insulation costs less per job and per R-value measurement allowing you to use much less material to cover more ground.

  • Open-Cell Content 98% 98%

View Our Other Rhino Linings® SPF Products

ThermalGuard OC1

ThermalGuard OC1.6

ThermalGuard CC2

DuraTite® Systems

Become a Spray Foam Contractor

Speak to a Rhino Linings representative and discover the package and products that are right for your business.
Become a Rhino Linings SPF Contractor