Knee Wall Air Leaks: Where They Hide and How to Seal Them

Knee Wall Air Leaks: Where They Hide and How to Seal Them

Knee wall air leaks are usually found in three places: behind the wall where the insulation has slipped, in the floor joist cavities running underneath it, and around the little access door. Seal those three spots with rigid, caulked or foamed barriers, then insulate...
Attic Smell After Rodents: Causes, Cleanup and Fixes

Attic Smell After Rodents: Causes, Cleanup and Fixes

An attic that smells after rodents has almost always been contaminated by more than one thing: urine soaked into insulation, droppings, nesting material, and sometimes a carcass you cannot see. Air freshener will not fix it. The smell leaves when the source leaves,...
Air Sealing vs. Insulation: Which Comes First?

Air Sealing vs. Insulation: Which Comes First?

Air sealing and insulation are not rivals, and they are not interchangeable. Air sealing stops air from moving through gaps in your ceiling. Insulation slows the heat that moves through materials. In an existing attic, the right order is to seal first and insulate...
Cold Bedroom Over the Garage: Causes and Fixes

Cold Bedroom Over the Garage: Causes and Fixes

A bedroom over the garage is cold because its floor is also the garage ceiling. Below it is a space that sits close to outdoor temperature all winter, and the floor cavity between the two is usually leaky, under-insulated or both. The fix is rarely a bigger heater. It...