A full-line distributor and supplier of commercial and industrial insulation — fiberglass, mineral wool, rigid board, firestopping, and accessories. One source, dependable supply, on schedule.
Everything required to specify, complete, and protect an insulation system — sourced and shipped together.
Standard and high-performance fiberglass for thermal and acoustical applications.
02Non-combustible mineral wool for thermal, acoustical, and fire-resistance applications.
03Extruded and expanded polystyrene for walls, roofing, below-grade, and continuous insulation.
04Fire-rated sealants, barriers, and engineered systems for penetrations and joints.
05Facings, tapes, pins, washers, adhesives — everything to complete the install.
+We source additional lines across every insulation and firestopping category.
Direct manufacturer relationships mean authentic product, current pricing, and reliable supply.
Don't see a manufacturer you spec? We carry additional lines across every category.
Request the full line card →Based in Newark, New Jersey, Commercial Insulation Supply is a distributor and supplier of thermal, acoustical, and fire-protection insulation, serving commercial contractors, builders, and facility operators across the Tri-State area and shipping nationwide.
We run the business on the fundamentals that matter to a serious supply partner: direct manufacturer relationships, competitive pricing, dependable logistics, and account service that picks up the phone. New build, retrofit, MRO, or specialty application — we keep your project supplied and on schedule.
Tell us what you need — product, quantity, timeline. We'll respond with a quote within 24 hours.
634 Frelinghuysen Avenue
Newark, NJ 07114
Mon–Fri, 7:00 AM – 5:00 PM