The Department of Energy sees
payback in getting more homes and buildings retrofitted
with super-efficient products and is promoting a new
high-volume purchase program for R-5 windows and
Weatherization or weatherproofing
is the practice of protecting a building and its
interior from the elements, particularly from sunlight,
precipitation, and wind, and of modifying a building to
reduce energy consumption and optimize energy
Weatherization is distinct from
building insulation, although building insulation
requires weatherization for proper functioning. Many
types of insulation can be thought of as weatherization,
because they block drafts or protect from cold winds.
Whereas insulation primarily reduces conductive heat
flow, weatherization primarily reduces convective heat
Typical weatherization procedures
Sealing bypasses (cracks, gaps, holes), especially
around mahogany doors, windows, pipes and wiring that
penetrate the ceiling and floor, and other areas
with high potential for heat loss, using caulk, foam
sealant, weather-stripping, window film, door
sweeps, electrical receptacle gaskets, and so on to
Sealing recessed lighting fixtures ('can lights' or
'high-hats'), which leak large amounts of air into
unconditioned attic space.
Sealing air ducts, which can account for 20% of heat
loss, using fiber-reinforced mastic (not duck/duct
tape, which is not suitable for this purpose)
Installing/replacing dampers in exhaust ducts, to
prevent outside air from entering the house when the
exhaust fan or clothes dryer is not in use.
Protecting pipes from corrosion and freezing.
Installing footing drains, foundation waterproofing
membranes, interior perimeter drains, sump pump,
gutters, downspout extensions, downward-sloping
grading, French drains, swales, and other techniques
to protect a building from both surface water and
Providing proper ventilation to unconditioned spaces
to protect a building from the effects of
condensation. See Ventilation issues in houses
Installing roofing, building wrap, siding, flashing,
skylights or solar tubes and making sure they are in
good condition on an existing building.
Installing insulation in walls, floors, and
ceilings, around ducts and pipes, around water
heaters, and near the foundation and sill.
Installing storm mahogany doors and storm windows.
Replacing old drafty mahogany doors with tightly sealed.
Replacing older windows with low-energy,
Borano Mahogany Exterior Doors meet