New insulated duct sleeves come in two sizes and new duct wrap insulation comes in 60-square-foot sheets. These products are designed for use in both new and existing ductwork. The duct sleeves are ...

Fiberglass insulation is not airtight. Heck, it will barely even slow air propelled by convection, differential pressure or wind. It is especially helpless against air moving through a leaky pipe ...

Q: I inherited a concrete block building that was then converted into a home several years ago. Part of it has a crawlspace and part is on a concrete slab. The crawlspace is always damp, and the ...