Save Energy. Save Money.

Leaks in outer walls, doors, windows and other openings can waste energy and increase utility costs. A well-sealed structure with the correct amount of insulation can make a huge difference.


Additional benefits that can be realized by properly insulating:

  • Stay cool in warmer months and warm in cooler months
  • Reduce outside noise
  • Control humidity
  • Let less dust and insects inside

RWC Building Products carries many types of insulation from blow-in fiberglass to polyiso foam boards. Below are some of the products we stock. If you have any questions or need assistance choosing the right product for your next project, please don’t hesitate to contact us or submit a quote form online.

Adding insulation to your attic is a blast with the AttiCat® Insulation Blowing Machine! It conditions the AttiCat® Expanding Blown-In PINK Fiberglas™ Insulation by breaking it up and fluffing it, adding millions of the tiny air pockets that give the material its insulating power. The insulation is conditioned further throughout the length of the hose, and as it bounces its way up to your attic, more and more air pockets are added, increasing its insulating power even more. And since Fiberglas™ insulation will not settle, it will keep its energy-saving R-value over time.


ACFoam®-II Polyiso Roof Insulation

  • Closed-cell polyisocyanurate (polyiso) foam core integrally bonded to non-asphaltic, fiber-reinforced organic felt facers.
  • Flat insulation available in 4ft x 4ft (1220mm x 1220mm) and 4ft x 8ft (1220mm x 2440mm) panels.
  • Manufactured using CFC-, HCFC- and HFC-free foam blowing technology with zero ozone depletion potential (ODP) and virtually no (negligible) global warming potential (GWP).
  • Contains between 59% and 27.6% recycled content by weight (Atlas Technical Bulletin: TB-2).

EnergyGuard™ Roof Insulation Board is made of organic/glass facers bonded to a core of isocyanurate foam.


  • High insulation value – Excellent “LTTR” value compared to any other FM Class I rated products of equivalent thickness.
  • FM Approved – Subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the Factory Mutual Research Approvals Guide. 
  • Environmentally safe – Uses EPA accepted blowing agents.
  • Light weight – Lighter than most other insulating products offering comparable thermal resistance; as much as five times lighter in weight than many other materials with the same R-value.
  • Excellent dimensional stability.
  • Low water permeability – lower overall perm rating than many conventional insulation boards.
  • High moisture resistance and no capillarity; is stable and maintains its physical and insulating characteristics.
  • Easier handling and faster to install – Because it is light weight, this material is easier to handle on the job site and installs faster. Easier cutting in the field provides the installer with simplified fabricating on the roof deck. Minimizes on-the-job damage.


  • When properly installed, it is suitable for use under built-up, modified bitumen and most single-ply roofing systems.

Johns Manville Fesco® Board is a homogenous insulation board, composed of expanded perlite, blended with selected binders and fibers. The expanded perlite contains air cells which provide superior insulating efficiency. The top surface of the board is sealed with a special TopLoc® coating to prevent excessive absorption of asphalt during the installation process.


ValuTherm™ is a rigid roof insulation board composed of a closed cell polyisocyanurate foam core bonded in the foaming process to universal fiber glass reinforced facers. ValuTherm provides high thermal insulation value over metal, nailable and non-nailable roof decks in built-up, modified bitumen and single ply membrane roofing systems.


Product Advantages

  • Tongue and groove edges help boards fit snugly against one another
  • Tongue and groove on all four sides of 2′ x 8′ boards 1″ thick or less and on the long edges of all other boards
  • Lightweight
  • Moisture resistance
  • Thermally efficient
  • Minimum compressive strength of 25 psi


  • For a wide range of commercial and residential applications


Glass-Reinforced Facers: Provide ridgidity and protection to the foam core and are compatible with BUR, modified bitumen and single ply membrane systems.

Closed Cell Polyisocyanurate Foam Core: Provides high R-value per inch in built-up, modified bitumen, metal roof and single ply roof systems, and utilizes an environmentally compliant blowing agent that provides high thermal insulation performance.

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