TJ Alexander
  • Sunapee, NH
  • United States
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So many homes have poorly installed fiberglass insulation. Have you been successful with a retrofit dense pack cellulose?
5 Replies

Doing testing of existing homes it is typical to see mottled patterns of surface temperatures with the FLIR Infrared Thermal Imager during Blower Door Testing.  Part of the problem is air sealing and…Continue

Started this discussion. Last reply by James P. Weingardt Jul 5, 2014.


TJ Alexander's Page

Profile Information

Thermo Building Services LLC
Professional Certification
BPI Building Analyst
Professional Interests
Energy Auditing and problem solving in existing buildings as well as energy efficiency.

I am also involved in energy saving retrofits as well as heating and HVAC system upgrades and alternative energy sources. Keeping up with regular training on the best use of materials and design of mechanical systems to get the best efficiency to cost ratio for the client.
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Passive House interest

We have several passive house inspired projects in the planning stage in New Hampshire.

 As usual with some folks in the business, I am going to build my own net zero home. That way I don't have to sell or compromise on the important points and construction methods with folks who think they have the answer or don't think the details are important.

In doing quality control work in new construction with the established conventional builders, the passive house influences and advice seem to be ignored and disparaged.

There are buildings being constructed that offer the promise of a healthy house with low energy use and reasonably priced, durable construction.

TJ Alexander's Blog

So many homes have fiberglass insulation that is poorly installed in New Hampshire and elsewhere

Doing testing of existing homes it is typical to see mottled patterns of surface temperatures with the FLIR Infrared Thermal Imager during Blower Door Testing.  

Part of the problem is air sealing and the other part of the problem is poorly installed fiberglass insulation.

This is not a rant against fiberglass insulation (I am a fan of both Rock Wool/Roxul and dense packed cellulose) for retrofit projects.  Fiberglass batt or blown insulation can perform fine, if it is…


Posted on June 12, 2014 at 1:31pm

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At 8:04pm on February 15, 2012, Diane Chojnowski said…

Hi TJ,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!

Diane, HEP Moderator


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