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ATTIC
HATCH
One
inexpensive and common type of attic access is referred to as
a scuttle hole or attic hatch, which is simply a removable portion
of the ceiling that allows entry to the attic above. A scuttle
hole is commonly located in a closet or main hallway.
To
create the hatch, the installer should cut a plywood piece or
save the ceiling drywall piece that is cut out for the hole. To
ensure a tight fit, securely fasten the trim around the hole to
the ceiling and make sure that it is flat and level. An uneven
base can cause air leakage. Weatherstripping can be installed
either on the hatch itself or on the inside of the trim or base
where the hatch rests. Adding a latch bolt will help ensure a
tighter seal. After the trim or base is aligned to seal properly,
insulation should be added to the attic side of the hatch. Rigid
insulated sheathing is recommended.
Cut
the insulated sheathing 1/4 inch smaller than the hatch size to
allow for clearance when moving the access panel. Apply 3 or 4
inches of insulation to the hatch with construction adhesive and
screws. As an added measure, glue the kraftpaperside of batt insulation
to the top of the last layer of rigid insulation. Try to achieve
the same total R-value as recommended by the 1995 Model Energy
Code (MEC)(see page 4) or DOE Insulation Fact Sheet. Order the
Insulation Fact Sheet (DOE/ CE-0180) from the Energy Efficiency
and Renewable Energy Clearinghouse.
An
attic access is a big hole. Adding an insulated cover and weatherstripping
to an access can reduce infiltration and heat-loss through this
passageway. Latch bolts (not shown) may be installed to help ensure
an even tighter seal.
Next:
ATTIC STAIRS
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