"The blower door test value decreased 100% after the very first day, after John's crew sealed the floors of our large attics, and..."
The blower door test value decreased 100% after the very first day, after John's crew sealed the floors of our large attics, and sealed a small channel under the slab that allowed cold winter air to chill tile floors throughout the kitchen/DR. A very drafty house was converted to a far more comfortable house. The final number was about 30% of the initial value. A rather inefficient hybrid whole house fan/attic fan was converted to an efficient and weather-proof whole house exhaust fan for summer use. While we will not know how effective the insulation and all the other improvements will protect us from extreme heat and cold, from everything we have seen, we are (almost) looking forward to another cold winter to test the insulation. John is the boss, not a salesperson. I had interviewed several other building scientists and insulation experts and had no trouble choosing John. He knows his business, he knows how to explain what he wants to do and why, and he worked with me, not against me, to complete the job. He made two proposals, and we ended up with a hybrid work scope. Very professional, organized, hard-working. They checked the blower door data after every major portion of the work, and exceeded their targeted reduction in CFM 50 by approximately 2-fold. They had to adjust a few recessed lights that were a little askew after sealing and insulating a small attic, and they came in part of an extra day and fixed everything to my satisfaction. I was looking for a local building science specialist to examine my very large, leaky and complex house, recommend and install ecologically sound insulation. John was not the cheapest, but he noticed a number of things about the house that others missed, and he was clearly very capable and very willing to explain my options in great detail. I had a lot of confidence in his company, and I am very pleased with the results.
"The installation crew is highly competent, very friendly and respectful and they go the extra mile to do a good job."
The installation crew is highly competent, very friendly and respectful and they go the extra mile to do a good job.
"From John's initial consultation I got the impression that not only was he knowledgeable, but he enjoyed the process of making..."
From John's initial consultation I got the impression that not only was he knowledgeable, but he enjoyed the process of making people's home's more efficient. He was professional, personable and easy to work with. The crew worked expediently and they seemed committed to a high level of craft. I am a carpenter myself, so I was certainly checking out the work that they had done at the close of each day and I was never disappointed. I was impressed with all aspects of each stage: cellulose blown insulation into the wall cavities, 2" foam board installation in crawlspace, vapor barrier installation under kitchen crawlspace, spray foaming around the sills, and installation of double paned windows in basement. These guys are a professional outfit with a reasonable overall price. Jill was great at helping us navigate the NYSERDA loan process and was always friendly and easy to deal with. Thanks again!!
"I am a contractor myself and would be happy with the crew like them Very happy with all work done Very clear and to the..."
I am a contractor myself and would be happy with the crew like them Very happy with all work done Very clear and to the point John did a good job and explained all work clearly Very respectful and all work done well
"Mike was great. I appreciate his patience with delays (on my end) and how hardworking he is. Spencer and his crew were great..."
Mike was great. I appreciate his patience with delays (on my end) and how hardworking he is. Spencer and his crew were great -- very skilled and thoughtful. Very pleased with how clean they left the job site.
"I'm calling to tell you, your guys worked on my house today. I can't tell you how happy I am, how fantastic..." Read Full Testimonial
"Thanks to Global Dwelling for the excellent job done insulating, encapsulating and drying out our..." Read Full Testimonial
"First, thanks for pulling my name and having my house made so tight. Thanks for also sending the five..." Read Full Testimonial
"Please give the Crew and John a warm thank you from Jonathan and I.Please give the Crew and John a warm thank..." Read Full Testimonial
"It is a rare occasion when I feel the urge to compliment a contractor, but this is such an occasion. Global..." Read Full Testimonial
"The work you performed, insulating my new double studded home is to my satisfaction. The crew was excellent.,..." Read Full Testimonial
"My house feels warmer already!!!!!!!!!John, the crew Greg, Spencer, Sean & Dino where great... they took..." Read Full Testimonial
"This correspondance comes to sincerely thank you for the team that completed work at my home on June 23-24th..." Read Full Testimonial
"Thanks to you, Spencer, and everyone! It was a very positive experience working with you — I’m..." Read Full Testimonial
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