The best time to make a big energy move is when your home already needs a lot of work.

What You Need to Know


R60 roof - 4" foil-faced polyisocyanurate (PIR) above sheathing, 9.25" dense-packed cellulose (DPC) between rafters R40 walls - 4" PIR over existing board sheathing, 4" fresh DPC R20 basement walls - 3" PIR R10 basement floor - 2" XPS rigorous detailing of windows, air sealing throughout, new doors and windows, new mechanicals

Other Benefits:

comfort (wind only when we want it), lower energy bills, humidity control, huge learning opportunity on many levels

Maintenance Requirements:

we are interested to see how long the foam will remain stable on the exterior

My Motivation:

We wanted to renovate an old house rather than build something new because it is a profound form of recycling. This house needed a lot of love, and while we were dealing with all the finishes and systems, it was the right time to deal with the envelope and efficiency.


Plan for the worst case scenario, even while you are looking for breaks of good luck.

Additional Notes:

This project was supported by: National Grid-pilot Deep Energy Retrofit r.k. Miles builder's supply Boral products (trim and siding) Paradigm windows

Open House Info:

Open House Saturday, October 5: 9am to noon

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