R-Value General Contracting, LLC
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R-Value General Contracting specializes in insulation and weatherization for homes and businesses, and Houzz lists the company in Ipswich, MA under Window Sales & Installation. The company reports 15 years in business and offers a free estimate. Its lone review, from December 2020, described a Mass Save insulation and attic ridge-vent job and said the crew was respectful, courteous and professional.
“Inspection: 1892732.015 - R-Value General Contracting, Llc”
R Value came to our house the other day to do a project for us thru Mass Save .. a program to make our house more energy efficient. I knew nothing about this company. 3 guys came and were just amazing. They were respectful, courteous, clean and all business . I so appreciated the whole experience, the job insulation, ridge vent in the attic done so well. I would highly recommend this co. to do work. Thank you so much for everything.
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2 changes recorded — last scanned Sep 19, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from R-Value General Contracting, LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,000 – $11,000
Typical exterior project around $7,500
No unnecessary upselling5.0
Repair specialist5.0
Whole-house jobs of 14 to 30+ windows5.0
