Polystyrene Insulation Thermal Resistance

Show 1 functional unit.

Polystyrene insulation thermal resistance.

Polyurethane insulation uses the thermal resistance of its blowing agent to attain higher initial r values. Resistance properties a high r value retained even after prolonged exposure in high moisture environments. Thermal conductivity is defined as the amount of heat in watts transferred through a square area of material of given thickness in metres due to a difference in temperature the lower the thermal conductivity of the material the greater the material s ability to resist heat transfer and hence the greater the insulation s effectiveness. According to the building science corporation thermal drift is t he loss of r value over time in foam insulation that contains captive blowing agents.

Other areas of the world more commonly use u value u factor for elements of the entire building enclosure including windows doors walls roof and ground slabs. However r value is widely used in practice to describe the thermal resistance of insulation products layers and most other parts of the building enclosure walls floors roofs. However polyurethane insulation loses r value over time due to thermal drift. A single small scale test characteristic such as aging does not accurately predict the in service design thermal resistance of an insulation especially when the actual field verified performance of the insulation has already been confirmed in extreme real life environments.

The functional unit is 1 m 10 764 ft of rigid cellular polystyrene rcps insulation board with a thickness providing an average thermal resistance of r si 1 m k w r value of 5 678 hr ft f btu and with a building service life of 60 years. Our patented process technology helps to ensure that celfort and foamular extruded polystyrene thermal insulation boardwill not corrode or decay over time celfort 300 foamular 400 600 and 1000 are type 4 closed cell thermal. 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. Budget friendly stable long term thermal resistance lttr with the highest insulation value per dollar spent outstanding performance.

This is an inaccurate assumption. Polystyrene foams are good thermal insulators and are therefore often used as building insulation materials such as in insulating concrete forms and structural insulated panel building systems. When increasing the thickness of the polystyrene boards you will improve the thermal resistance. Grey polystyrene foam incorporating graphite has superior insulation properties.

Benefits exceptional insulation value. Continuous insulation that resists moisture and many other adverse effects available in many compressive strengths and thicknesses including custom tapered for drainage slopes.