Specification History

Exterior access:

Remove the exterior cladding at the insulation access point when feasible

If not feasible, drill holes in the exterior siding around the perimeter of the home, parallel to the bottom plate, an equal distance apart, and located under the lowest window sill when possible

Neatly cut any vapor retarder installed and minimize air barrier and drainage plane disruption

Create an access hole through the sheathing sufficient to access the cavity with fill tube

Access all wall cavities safely and prepare for access closure