The most important parameter for attic insulation is theR-value. Compared to the rest of the house, the attic should have an above-average R insulation value. In the US, we have 7 climate zones with7 recommended R-values for attics; we’re going to look at each of them in turn. Here...
Typically specified joint treatment in smoke barrier applications and areas not normally open to public view such as plenum areas above ceilings, attics, and other areas where the assembly would generally be concealed Level 2: All joints and interior angles shall have tape embedded in joint compoun...
Question: what is the maximum horizontal bath vent fan duct length through an attic? You note for the best bath vent fan duct termination to route the duct: horizontally through the building wall at a building gable-end wall (first choice), or if the gable end is too distant ... . wha...
Watch out: OPINION: Tjernlund advises that you should not operate an exhaust fan that is used strictly for summer exhausting, such as a whole house vent fan or attic exhaust fan used only in summer. I'm not sure we agree in all cases. For example if you are testing a gas or oil fir...