High Density Insulation R Value

15 bags for ceilings and attics easy to cut and install with low dust provides temp.
High density insulation r value. Polyurethane spray closed cell foam insulation. High density cathedral ceiling batts allow an airspace between the insulation and roof deck for ventilation. In the context of building and construction the r value is a measure of how well a two dimensional barrier such as a layer of insulation a window or a complete wall or ceiling resists the conductive flow of heat. Control and sound absorption in floors and walls.
The r value for foamular xps insulation is provided from testing at two mean temperatures 40ºf and 75ºf and from two aging conditioning techniques 180 day realtime aged as mandated by astm c578 and a method of accelerated aging sometimes called long term thermal resistance lttr per can ulc s770 03. Owens corning r 21 ecotouch insulation is specifi cally engineered to solve the effi ciency problems of exterior 2x6 walls. High density batts for a 2 by 6 inch 51 by 152 mm frame wall offer r 21 and high density batts for an 8 5 inch 216 mm spaces yield about an r 30 value. R value is the temperature difference per unit of heat flux needed to sustain one unit of heat flux between the warmer surface and colder surface of a barrier under steady state.
Insulation or other building material 9. R 38 ecobatt kraft faced high density fiberglass insulation batt 10 1 4 in. High density means more fi bers per square inch. R 21 ecotouch insulation is available in batts unfaced and.
Aging effects comments. A medium density batt offers r 13 for the same space. R 38 batts for 12 inch 304 mm spaces are also available. Products with a higher r value have a higher cost but have an increased capacity to resist heat flow and therefore provide greater insulation.
It provides r values that range from 3 6 to 4 2 per inch. Also called styrofoam insulation this is the least expensive material. Thanks to thanks to andrew cole for correcting our data on this product. It delivers a higher r value per square inch in less space than standard insulation products.
High density sidewall batts are available in sizes to fit standard construction without loss of r value due to compression. Each type comes with unique advantages. Polyisocyanurate polyurethane foam insulation r values. These batts meet the energy saving requirements of today s codes without requiring changes in construction.
High density polyisocyanurate foam core.