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Project Questionnaire

Estimate for Injecting the Closed Wall Cavities

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In order to make gathering the information and answering these questions easier, we have published the questions to a document you can download. There are two ways to download the document.

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This is a general listing and some of these questions may not apply to your project. Please tell us the answers to only the questions that are relevant to your project.

If you are giving us length and heights of walls or roof areas, please include information about window and door sizes

  • Please give the dimensions of the area to be insulated (All, just the first floor, etc.)?

  •  Is the installation to be done from the inside or the outside?

  • Is there any old or uninsulated ( i.e. knob and tube) wiring in the cavities to be injected?

  • What are the wall framing sizes (pre-1975 probably 4"), their spacing?

  •  How many square feet are to be injected?

  •  Is there strapping, blocking, or other obstructions?

  •  Are the walls all open, closed, or some of each?

  •  How are the rough openings framed and trimmed out?

  •  Are there window weight cavities and do you want them filled?

  •  Is there a specified minimum for the R-value of the walls, what R-value do you want?

  •  What are your plans for vapor control? (Polyethylene, dehumidification, etc.) See for more information.

  •  Are there high moisture levels and from what source?

  •  Are the basement walls included in the wall areas to be insulated?

  •  Is it balloon or platform framing?

  •  Are the wall cavities open to basement at the bottom?

  •  Are the rim joist areas (between the floors) accessible, on which floor levels?

  •  What is the inside finish (lath and plaster, sheet rock, open, etc.), how are they fastened to the framing?

  •  What is the outside sheathing material?

  •  What is the outside finish material?

  •  Are there specific problems with drilling holes to be addressed - special moldings, paneling, aluminum siding, asbestos, do we have to remove finishes or just drill through them (are there gaps in the sheathing behind the finishes)?