45min] and R-value
, described by HONIKEL & FISHER (1977) as PSE (R-value
rates reflect a product's ability to restrict heat flow which, in turn, reduces energy costs: the higher the R-value
, the better the product's insulating ability.
The total R-value
of the Mirrorpanel can be adjusted by adding additional layers to match a necessary component; conceivably the Mirrorpanel could be implemented as a continuous exterior insulation, or potentially be used in another, as yet unrealized, configuration.
While skylights may reduce R-value
, they can also provide daylighting that reduces energy for artificial lighting.
Density, k-factor, R-value
and percent closed-cell content were measured.
Polyiso (polyisocyanurate) or polyurethane foam installed under the roof system, instead of in the attic floor, helps seal the building against leaks and helps increase the R-value
of the roofing system.
It can be blown into wall cavities in new construction or used over existing batts to increase R-value
Table 3 below shows that the calculated r-value
When the geometry of the duct and insulation materials and the inner and outer surface film resistances are considered, however, the true R-value
of the insulation can be significantly different than the nominal rating (Palmiter and Kruse 2006).
Third, the introduction of Thermax ci on the exterior wall is very effective at increasing R-value
, and reducing the effects of wall bridging.
Creating a barrier to prevent interior air from escaping is beneficial - especially in cold climates - because air entering wall cavities can filter through fibrous insulation, reducing its effective R-value
and contributing to leakage to the outdoors.
These earth-friendly products enhance R-value
and help to seal your house.