Shop ROCKWOOL® Insulation at CBSI
Available across DE, MD, NJ, OH, PA, VA, and DC
Helping customers put a barrier between their construction projects and the elements that can compromise them (wind, heat, cold, noise, etc.) is a top priority here at Capitol Building Supply, Inc. (CBSI).
In particular, we invite local builders and contractors to join us as we highlight select products from ROCKWOOL®, one of the best insulation manufacturers in the business.
Mid-Atlantic Construction Professionals
When you shop with CBSI, you’ll find an incredible selection of quality ROCKWOOL insulation products at our construction yards in Delaware, Maryland, New Jersey, Ohio, Pennsylvania, Virginia, and Washington, DC. Among other ROCKWOOL offerings, our featured products include:
ROCKWOOL® AFB®
Acoustical fire batt (AFB) insulation is specifically designed for steel stud and wood stud applications within interior walls and floors. A perfect combination of fire resistance, sound absorption, and durability, ROCKWOOL AFB delivers:
- Superior fire protection from non-combustible insulation that will not emit toxic smoke or promote flame spread—even upon direct exposure to fire
- Higher density for greater sound absorption, leading to quieter, more comfortable spaces
- Variable thicknesses for use in numerous new construction and retrofit applications
- Strong compliance (ASTM, ULE, etc.) rates for fire reaction, corrosion resistance, air erosion, and more
Comfortboard® 80/110
This rigid stone wool board is a non-structural sheathing product ideal for continuous insulation applications. Available in variable thicknesses and densities, ROCKWOOL Comfortboard offers:
- Greater thermal performance (up to R21) in building envelopes
- Vapor-permeability for fast drying and moisture resistance around wall assemblies
- Reliable insulation for exterior perimeters, around foundations, under concrete slabs, as well as in cathedral ceilings and non-fire-resistive-rated dwellings * Excellent sound absorption for quieter environments
ROXUL Safe®
ROCKWOOL offers a complete line of fire-stopping insulation solutions (ROXUL Safe 45, 55, or 65) with variable densities and resistance ratings to meet the full range of your construction needs. ROXUL Safe products provide:
- Reliable fire-resistance ratings from 1-2 hours (both from the interior side)
- Lightweight, dimensionally stable, easy-to-install materials
- Non-combustibility and fire resistance at zero lot line clearance
- Non-corrosive materials that resist the growth of bacteria, mildew, and fungi
Cavityrock®
This semi-rigid stone wool board insulates exterior cavity wall and rainscreen applications with unsurpassed performance. Rely on ROCKWOOL Cavityrock for:
- Superior long-term thermal efficiency and moisture resistance, with improved acoustic comfort
- Mono- or dual-density thicknesses (ranging from 2-6")
- Compatibility with multiple cladding attachment systems
- Chemically inert, non-combustible materials approved for use in many NFPA 285-compliant designs
CBSI Is Your Go-To Provider of Construction Supplies
Your local construction product needs might start with insulation, but our expertise goes much further. Capitol Building Supply, Inc. is your one-stop shop for the best fasteners, tools, EIFS, drywall, steel, and acoustical products. Stop by or call anytime; we’re here to help.
About Capitol Building Supply, Inc.
Capitol Building Supply is a proud member of the GMS family of companies. Serving both commercial and residential customers, we offer the largest inventory of construction supplies in Virginia, Maryland, Delaware, New Jersey, Ohio, Pennsylvania, and Washington, DC. Our employees pride themselves on being hard-working, safe, and professional. Whether you need drywall, insulation, acoustical tile, tools, or other construction accessories, we've got your Mid-Atlantic construction needs covered.
About ROCKWOOL
Founded as a family business more than 80 years ago, ROCKWOOL makes products that make the world a better place for everyone—and does it with a commitment set in stone.
Today, the ROCKWOOL Group is the world’s leading manufacturer of stone wool insulation, providing high-performing, sustainable products for the construction industry. With a manufacturing, sales, and distribution network that spans the globe, ROCKWOOL's stone wool products feature in residential, commercial, and industrial projects in communities worldwide.