Skip to content
Canadian Owned & Operated Since 1964
Canadian Owned & Operated Since 1964
Rockwool Comfortbatt Insulation R28 x 24"

R28 x 23-inch Comfortbatt Wood Stud Stone Wool Insulation

by Rockwool
$92.65 - $92.65
$92.65
$92.65 - $92.65
$92.65

*Online Pricing Only

Availability:
In stock
SKU 430002R28

R28 x 23-inch Comfortbatt Wood Stud Stone Wool Insulation

Rockwool Comfortbatt is a semi-rigid stone wool batt for exterior wood and steel stud walls in new construction and renovation. A flexible edge compresses as the batt is inserted, then springs back against the studs for a complete fill.

This size is R28, 23 in. wide, for 2 in. x 8 in. walls with 24 in. on-center stud spacing.

Features and Common Uses
  • Flexible edge expands against the studs so the batt fills the cavity and holds its rated R-value
  • Non-combustible and fire resistant, with a melting temperature of 1177°C (2150°F)
  • Does not develop toxic smoke or promote flame spread in a fire
  • Water and moisture resistant; does not absorb moisture, so it keeps its insulating value
  • Good sound absorbency
  • Does not rot or promote growth of fungi or mildew
  • Easily cut
  • GREENGUARD Gold Certified
Specifications
Product Specifications
Brand Rockwool
Product Line Comfortbatt
Material Stone wool
R-Value R28
Thickness 7.25 in.
Width 23 in.
Length 47 in.
Wall Framing 2 in. x 8 in. walls
Stud Spacing 24 in. on center
Coverage per Bag 30.7 sq. ft.
Fire Performance Non-combustible; melting point 1177°C (2150°F)
Certification GREENGUARD Gold

Technical data for exterior wood and steel stud applications. Source: Comfortbatt Technical Data Sheet (PDF).

Full range of Rockwool residential products. Source: Rockwool Residential Building Product Guide (PDF).

Frequently Asked Questions
What wall does R28 x 23 in. Comfortbatt fit?

It fits 2 in. x 8 in. wall framing with 24 in. on-center stud spacing. The batt is 23 in. wide and 47 in. long.

How much does one bag of R28 Comfortbatt cover?

One bag covers 30.7 sq. ft.

Is Comfortbatt stone wool insulation fire resistant?

Yes. Comfortbatt is non-combustible, has a melting temperature of 1177°C (2150°F) and does not develop toxic smoke or promote flame spread.