Insulating Block or Masonry Wall

Insulation for Block or Masonry Wall

Installation Instructions

Installation Instructions: (There are 3 “levels of benefit” options)

1. R-3.7 (1”x 2” nominal furring)

  • Attach 1”x 2” (nominal) furring strips vertically at an interval of 16” on center to the masonry wall (with an adhesive or fastener that is specified for this application).

  • Cut the InfraStop® Reflective/Bubble/Bubble/Reflective, Staple Tab product (using scissors or a utility knife) into lengths equal to the height of the wall (floor to ceiling).

  • Staple the product to the face of the furring strip - product seams should split on a furring strip.

  • One air space is created between the InfraStop® and the masonry wall.

  • Finish with interior panel (or sheetrock) of choice.

R-4.2 (2”x 2” nominal furring)

  • Same as above except utilize 2”x 2” (nominal) furring.

R-6.1 (2”x 2” nominal furring)

  • Same as above, except the product is not stapled to the face of the furring strip.

  • Staple the product to the side of the furring strip at a depth of 3/4”. The goal is to split the cavity (in two) into approximately equal air spaces.

  • The two air spaces created are: one between the InfraStop® and the masonry wall, and the other between the new interior panel and the InfraStop® .

Square Edge Roll Sizes

Thermal Insulation

Insulation for Block and Masonry Wall: There are 3 levels of benefit.

Product Information

InfraStop® Insulation products are a group of technologically advanced materials. They are ideal for new construction or retrofit applications in commercial, industrial, metal and post/frame buildings, along with many other DIY applications. When you think of insulation, you should think of InfraStop®. Our products are recognized for their thermal performance, easy installation, versatility, price and environmental friendliness.


  • Easy to handle and install
  • Convenient roll sizes
  • Class A / Class 1 Fire Rating
  • Inhibits dew point condensation
  • Vapor retarder (0.02 perms)
  • Does not compress, collapse or disintegrate
  • Non-toxic / non-carcinogenic

Testing and Certification

InfraStop® products are thoroughly tested at either nationally approved independent laboratories or leading universities. Tests are performed to current American Society of Testing and Materials (ASTM) standards when a standard exists. For a copy of an actual test report, please e-mail us at

  • Other Wall, Ceiling, or Crawlspace Projects

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