The process of insulating the house begins by sealing all holes and cracks where air leakage might occur. Air leakage can cause indoor air quality problems, condensation, excess energy use, and comfort complaints. Leakage from outdoors to indoors is known as infiltration and leakage from indoors to outdoors is known as exfiltration. 

Dow Great Stuff Pro™ Gaps & Cracks insulating foam sealant is sprayed around wiring from the attic through the top plate of an interior wall.

Holes in top plate that were drilled and then not used are filled the foam. This is done to eliminate air movement inside the wall cavity.

Holes in studs are filled the foam. This same foam is applied to wire openings in all electrical boxes.

The same is applied to the shim space around all windows and exterior doors.

The joint between the bottom plates of all exterior walls and the floor is caulked. This includes the basement walls as well.

The insulation system for the walls is Johns Mansville’s loose-fill fiber glass Spider Custom Blow-In-Blanket with an R value of 23. Since it is fiberglass it will not hold moisture, it will not support mold growth, it will not rot or decompose and is non-combustible. The system is formaldehyde-free, and contains no acidic fire retardant chemicals. 

Part of the insulation system is netting that is stabled to the studs on all the Main Level exterior walls. View of West Kitchen wall.

Netting installed on the South Living Room / Kitchen wall.

The rim joist space is enclosed with the netting in order to be filled the insulation.

Insulation being blown into the netted stud space.

Insulation being blown into the netted rim joist space.

Selected interior walls were netted on both sides and filled with insulation to reduce sound transmission from one room to another.

Insulation applied around the skylight tubes.

Air chutes are installed at all soffit vents to keep attic insulation from blocking the air circulation in the attic.

Batt insulation is installed in the vaulted ceiling above the Kitchen.

Batt insulation is installed in the vaulted ceiling above the Kitchen.

After the drywall is complete, the Attic is insulated with Johns Mansville Climate Pro/Attic Protector formaldehyde-free loose fill fiberglass insulation for an R value of 38.  

View of the East wall of the East Basement Bedroom with blown in insulation above and the rigid Styrofoam on the concrete view-out wall below.

In addition to the 1” Styrofoam that was applied to the basement walls prior to starting framing, the exterior basement walls are insulated with paper faced R13 fiberglass batts.

Please visit to learn more abot Dow Great Stuff and visti to learn more about  Johns Mansville’s insulation products.

Upon completion of the insulation, another series of inspections are completed to assure compliance with the LEED® for Homes, ENERGY STAR®, NAHB Green Building, Indoor airPlus, and the Builders Challenge programs.

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One Response to “Insulation”

  1. Home Insulation Says:

    Very interesting pictorial display of the insulation process here. This was a good read.

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