Yes. R values simply add together to give a total R for the wall or ceiling. Generally speaking, a denser insulation should not be put on the cold side of a less denser one; it's a question of letting the moisture escape as easily as possible and not creating double vapour barriers. Hence, loo...
Isolating parts of the house located underground from the heat of the house can cause freezing and shifting under certain conditions. Wing walls, carport posts, and the like are common frost heaving or ad-freezing candidates because these structural parts of the house are far away from the heat ...
Insulating pipes that run through cold areas is necessary to keep them from freezing; even then you have to run the water occasionally or add some heat. You could leave the tap running a little during the very cold spells; that's how Grandpa kept them from freezing. You can also get thermostat ...
There are so many different insulating materials that it is quite confusing. I have tried to pull together information on the most common types from the manufacturers, the critics, the contractors and the researchers. Usually this information seemed to me to be either too simplified or too ...
Common Names: Fiberglass, Rock WoolColour: Pink, yellow, beige, white or greyThermal Resistance: RSI - .022/mm R-3.2/in. FairCost: lowCapacity to dry out if wet: Good to excellentFire Resistance: Good to excellentFungus / Vermin Resistance: Good to excellentLimitations: -- Skin irrita...
Common Name: Fiberglass loose fill.Colour: Pink or yellow.Thermal Resistance: RSI - .020/mm R- 2.9/in. LowCost: medium plus blowerCapacity to dry out if wet: GoodFire Resistance: ExcellentFungus / Vermin Resistance: Good to excellent.Limitations: -- Long fibers prevent good flow in cl...
Common Name: Rock Wool loose fill.Colour: Brown or whiteThermal Resistance: RSI - .019/mm R - 2.7/in. FairCost: Medium plus blower.Capacity to dry out if wet: Good.Fire Resistance: Excellent.Fungus / Vermin Resistance: Good to excellent.Limitations: -- Skin irritant: wear long sle...
Same appearance and characteristics of Blown-in Glass Fiber except:Thermal Resistance: RSI - .021/mm R - 3.0/in. FairApplications:-- Attics. Accessible enclosed cavities with great care and no obstructions. It gets hung up very easily.
Same appearance and characteristics of Blown-in Mineral Wool, except:Thermal Resistance: RSI - .021/mm R - 3.0/in. FairLimitations: -- Very thick layers may compress other insulation or overload weak ceilings.Applications: -- Attics. Accessible enclosed cavities with care and no obstruc...
