2 x 6 Wall Framing allows for additional insulation
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Insulating
Forced Air
Energy Star Designs
Framing Procedures
The integrity of the shell is very important in an
Energy Star home. Attention to detail during the framing stage will save time
and money later during the shell sealing and insulation procedures.
- There should be a continuous gasket or sill sealer between the top of
foundation wall and bottom of the sill plate.
- There should be no gaps between the rim joists.
- Exterior walls should be 2X6 if your budget allows. This allows for R19
versus R13 or an increase of 50% insulation value.
- Exterior wall corners should be open for insulation purposes.
- Where interior wall partitions meet exterior walls they should be open
framed.
- Consider insulated headers.
- Make sure to follow manufacturers window installation procedures. This
will include wrapping the opening and a bead of sealant under the nailing fin.
- Roof rafters should be attached to the top wall plate so as to allow
enough area for insulation under the baffle. If using trusses consider a
raised heel truss.
ELECTRIC PROCEDURES
- There must be a minimum of 300 watt savings on light fixtures or
appliances.
- This can be done using six compact fluorescent bulbs.
- Recessed light fixtures that are connected to unconditioned areas should
be IC rated and sealed.
- There should be at least one bathroom fan capable of exhausting 90CFM with
a sone rating of 1.5 or below and operated by a timer switch.
PLUMBING PROCEDURES
- Domestic hot water tanks should be direct vent or closed combustion and
have a energy factor of .61 or better.
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