Calculated thermal performance of 2.5-inch X-Brackets filled with blown insulation

The 2.5-inch InSoFast X-Bracket assembly filled with dense-packed blown insulation achieves a calculated thermal performance of R-9.75 continuous insulation, effectively eliminating thermal bridging across framing members.

Builders retrofitting exterior walls, basements, roofs, or shipping containers across the United States and Canada face strict energy codes while managing limited cavity depth. Traditional wood or metal studs introduce severe thermal bridging that degrades wall performance, making continuous cavity bracket systems essential for compact spaces.

If you only do one thing: Specify dense-pack cellulose or fiberglass at full manufacturer density to maintain the continuous R-9.75 assembly rating without cavity settling.

• Assembly R-value: The 2.5-inch X-Bracket system provides a continuous R-9.75 thermal barrier when filled with dense-packed blown insulation, delivering reliable whole-wall thermal efficiency.
• Thermal bridge elimination: The non-conductive bracket profile fully isolates mechanical fasteners and framing pathways, preventing heat transmission losses common to standard studs.
• Coverage rates: Each box covers 77 to 97 square feet when laid out at 16 inches on-center, or 116 to 136 square feet at 24 inches on-center.
• Material cost: System box pricing starts at $85.35, yielding a baseline bracket cost of approximately $0.63 per square foot before adding the blown media.
• Ventilation capacity: The structural profile maintains a cross-ventilated cavity design that doubles as a built-in rainscreen drainage plane on exterior assemblies.
• Substrate compatibility: The 2.5-inch bracket mounts directly to exterior sheathing, concrete basement walls, framed roof rafters, floors, and corrugated shipping containers.

• Watch out for: Under-packing blown fiber below standard dense-pack density ratings, which causes cavity settling, air convection currents, and lost R-value over time.
• Watch out for: Confusing blown insulation metrics with closed-cell spray foam, which yields R-10 to R-17.5 in the same 2.5-inch profile depth.
• Watch out for: Blowing loose fill without applying tight mesh netting or exterior barrier membranes to contain the cavity fill prior to final cladding.

Measure your net wall square footage and select your bracket spacing (16-inch or 24-inch on-center) to determine box counts before ordering project materials or sample kits.

General information only, not medical advice. Decisions about health, treatment or wellbeing should be made with a doctor or other qualified healthcare professional.