![]() ![]() spray foam is great for air sealing and can have a high R-value per inch of thickness - fiberglass and cellulose is an inexpensive material to reduce convection in the cavity). These products also work very well with other types of mass insulation as hybrid systems by using the best attributes of each of the technologies (e.g. Fi-Foil has single layer, two layer, three layer and even honey-comb layer reflective insulation products for various building applications, each with different performance levels and attributes for the particular application. When the reflective insulation is installed to subdivide an air-filled region then heat transfer by convection is also reduced. The installation of reflective insulation in an enclosed space reduces thermal radiation to near zero. A multilayer reflective insulation system in a wall cavity improves this system by further reducing radiant heat transfer and adding additional “panes”, a two layer reflective insulation could be compared to a double paned window a three layer to a triple pane window, and so on. ![]() Simply put, adding a low e material makes the enclosed air space perform better. The ASHRAE Handbook has tables with values for various enclosed air spaces (0.5”, 0.75”, 1.5”, 3.5”, etc.) with high emittance surfaces (0.82 for common building materials) and values for air spaces with low emittance surfaces facing the enclosed air space (0.05 for low emittance materials like aluminum). Triple pane windows with low e surfaces perform better than a triple pane window without low e surfaces because of the reduction of radiation (low emittance) across the air spaces.Īir inherently has an R-per-inch value of 5.6, and is an excellent insulator when radiation and convection are controlled. Reflective insulation in a wall system can be compared to a double or triple pane window with low-e surfaces. The more layers within the air space, the better the performance. Reflective insulation is one or more low emittance surfaces installed in an enclosed air space. rolls, our multi-layer reflective insulation offers easier handling, reduces waste, and lowers the chance of product damage due to weather when staged on job sites. One (1) roll of VR Plus equals 16 sheets of 4x8 foam board. A Cost Effective Alternative to 3/4" Foam Board Cost-effective and remarkably easy to install, this powerful multi-layer low-e technology boosts R-value by utilizing less cavity air space-allowing for a slimmer wall system to provide you with more sellable square footage in zones 1 & 2. Gain up to R-7.1 on 1-5/8” framing for a higher-performance wall system.Īn easy upgrade from R-4.1 insulation to help builders qualify for DOE New Energy Efficient Home Tax Credits. This unique insulation has multiple low-e layers that expand within the cavity to create three reflective air spaces. Discover The Best Insulation for Masonry Walls in Zones 1 & 2Ī multi-layer reflective wall insulation, VR Plus Shield enhances enclosed cavity air space and stops up to 97% of radiant heat transfer. ![]()
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