Which R-value range does a 5.5-inch Batt-Bracket wall system deliver when paired with dense mineral wool?

A 5.5-inch InSoFast Batt-Bracket continuous insulation wall system paired with dense mineral wool batts delivers an effective thermal performance range between R-19 and R-24 across exterior wall and roof assemblies.

Meeting modern energy codes across the United States and Canada requires continuous exterior insulation to prevent thermal bridging through structural framing. Cavity-only insulation frequently loses up to 30 percent of its effective performance to structural framing conductance, driving specifiers toward non-conductive exterior bracket assemblies.

If you only do one thing: Specify friction-fit, steel-stud-width mineral wool batts measuring 16¼ inches or 24¼ inches wide to ensure tight compression and complete thermal boundary continuity.

• Thermal performance: The 5.5-inch bracket depth accommodates high-density mineral wool batts to achieve a continuous R-19 to R-24 thermal boundary uninterrupted by structural framing.
• Batt width dimensioning: The system requires 16¼-inch or 24¼-inch steel-stud-width batts rather than standard 15-inch cavity batts to establish a secure friction fit between brackets.
• Thermal bridge elimination: Engineered non-conductive bracket attachment points mechanically isolate exterior cladding fasteners from structural sheathing, stopping thermal bypass.
• Integrated rainscreen ventilation: The assembly design creates a ventilated drainage plane behind exterior finishes to promote rapid wall drying across Climate Zones 1 through 8.
• Box coverage ratings: Each box of Batt-Brackets covers approximately 77 to 97 square feet at 16-inch on-center layout or 116 to 136 square feet at 24-inch on-center spacing.
• Cladding support capacity: Built-in bracket faces accept standard exterior furring, wood strapping, or direct siding fasteners for residential and light-commercial wall claddings.

• Watch out for: Using standard 15-inch wood-stud batts instead of 16¼-inch batts, which leaves vertical air voids and triggers thermal convection behind cladding.
• Watch out for: Compressing thicker 7.25-inch mineral wool into 5.5-inch brackets, which alters batt density, reduces thermal performance, and can bow exterior furring strips.
• Watch out for: Omitting proper air-barrier and weather-resistive barrier detailing at transitions before mounting brackets, which compromises airtightness at building corners.

Measure total exterior wall area and divide by 116 square feet to estimate the initial box count for a 24-inch on-center Batt-Bracket installation before purchasing mineral wool.

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