Pro Contractor
Sill Sealer

Air and Moisture Barrier

Made from a ribbed polyethylene closed-cell foam, Reflectix® Sill Sealer was designed to reduce air leakage between the foundation wall and sill plate. The Sill Sealer can also be used to seal around window and door frames.

Recommended Products:

Sill Sealer
Ribbed Polyethylene, White - Roll
• CF3055036 (3.5” x 50’) – 36 rolls
• CF5055024 (5.5” x 50’) – 24 rolls
• CF7055016 (7.5” x 50’) – 16 rolls
• CF9055012 (9.5” x 50’) – 12 rolls

• Stops heat loss and air infiltration at the foundation to sill plate interface
• A closed-cell foam product
• Eliminate costly callbacks to builders due to leaks
• Mildew and water-resistant
• Provides protection against sill plate rot
• Works on residential and commercial construction, slab on grade, crawl spaces or basements
• Highly durable and can be installed around window and door frames

Testing and Certification:
Reflectix® 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. To obtain a copy of our Product Testing Specifications, please refer to our website “Literature Tab” above. The documents are also available by e-mail at or call 800-879-3645.

Installation Instructions:
Download Pro Sill Sealer Installation Instructions 1114.pdf
• Install a continuous course of the Reflectix® Sill Sealer between the foundation wall (or footing) and the sill plate.
• The product can also be installed around window and door frames.


Additional Resources:
F1 - Energy Saving Solutions for the Homeowner (Revised 0711)
F2 - Solutions for the Pro (Revised 0416)

Zip Code Zone Locator
This function provides regional installation recommendations for the following applications: Attic & Cathedral Ceiling
DIY Product Calculator Type:
Roof/Attic Application: Radiant Barrier Locate a Retailer
0 sq. ft. of roof/attic area 0 rolls
*Note: This calculator is for the convenience of our customers. These recommendations are for approximate product quantity.

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