Installation Instructions

Typar, Fanfold, and Drop-In Insulation Techniques
Starting Point & Starter Strip
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Once the house is stripped and prepped, it is recommended to use a house wrap to help reduce air infiltration.
Most people will wrap the entire house with house wrap or Typar then come back to cut out the door and
window openings. Typar comes in a 9' roll and can be stapled or nailed as you work it around the house. Typar
is typically used on new construction, but can be used on existing homes as well.
If the walls are somewhat uneven or wavy you can shim with the lath and you can install fan fold insulation to
help give a smooth surface to apply your new siding. Sometimes on older homes you have to use a combination
of lath and fanfold insulation. Once the house has been prepped you can begin to install your starter strip.
When using drop-in insulation, fur behind the trim pieces with 3/8'' lath. This will compensate for the added
thickness of the styrofoam panels.
To begin, find the lowest corner of the house. Partially drive a nail about 10 inches above the lowest corner or
enough to clear the height of a full siding panel. Measure from the eave or soffit down to the nail you just put
in. That dimension will be used to put a nail at all corners of the house. This will ensure you have a consistent
distance from the soffit line to the starter strip. To establish a level plane, attach a chalk line from nail to nail
and work your way around the house. Be sure to check the string lines with a level as you go just to make sure
you are indeed level. Next, measure down approximately nine inches from the string line to find the bottom of
where the starter strip will be placed. Install the starter strip all the way around the house. The starter strip
should start and end approximately 3'' from the corner of the house.
Note: The dimension you measure down from the string line could vary depending on the location of your string line and
the location of the lowest corner of the house. You want the dimension to be consistent all the way around the house but
you also want the starter strip at the bottom of the wall with no exposed wood.