What you will need:

1 Bag of Spray Foam Insulation waste.

2 Bottles of Great Stuff Spray Foam

Total Cost: $3.59+$3.59 = $7.18

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So this is an image of what was behind the sheetrock in the office bump out.

These air gaps render the insulation a most useless. In order for batt insulation (the most common insulation used) to do it’s job, it need to be touching a surface on al six sides. All six sides? Batt insulation has only four sides you say? Nope. Watch:

Properly insulted batt insulation is really hard to do. When it is installed properly there are no air gaps between the wood and the insulation. So, given this information – I needed to do a lot of work to this wall in order to make it air sealed, and properly insulated. So while at a work event – Dispelling Myths of Soy Based Spray Foam – I learned that after the foam expands in a new home application, the applicator uses a saw to remove the excess foam to allow for an even drywall application.
Here is a video of a new home insulation done by Western Spray Foam.

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In this video, when the insulation gets thrown off screen, it goes into a plastic bag and thrown into the landfill. The integrity of the R-Value of this insulation is still intact. The other major benefit from spray foam is that it creates an air seal, with a little help from a can of spray foam, that air seal can be re-created. So I asked Western Spray Foam if I could take a bag home – they gave me one!

Here is what one individual piece looks like. I put the flat part against the wood to make it as even as possible.

Below you can see that I filled the crevasse with the spray foam, you can see the gaps and cracks in piecing them together, so I bought some Great Stuff  to fill them in. I made sure the whole area was very densely packed so I really only needed to filled in the cracks on the surface.

Here is what is looks like when it’s all been filled in.

That’s it! Upgraded & air-sealed! That’s insulation upgrade on a Greenstring – Saved a bag of perfectly good insulation from the landfill AND got it for free.