
Serving Holliston, MA and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"They were very attentive to all questions I asked. I would highly recommend them. We feel warmer now that the insulation was blown in."





+9


Serving Holliston, MA and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"They were very attentive to all questions I asked. I would highly recommend them. We feel warmer now that the insulation was blown in."





+9

Serving Holliston, MA and surrounding areas
Approved
Free estimates
Credit card accepted
Customers say: Super punctual
"Professional crew; work was done quickly, with minimal disruption and fairly good cleanup. The house is older and the crew chief took reviewed the interior carefully to insure there would be no damage to the walls in the insulation process."





+1

Serving Holliston, MA and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
We pride our company on reliability, great communication,\nintegrity, and quality work. We are experts in our trade and will do our best\nto keep you as educated as we can on your particular task or project. We look\nforward to earning your business! We partner with utility-sponsored programs like Mass Save® Home Energy Services and Rhode Island Energy's EnergyWise Home Energy Services programs.\n





+4

Serving Holliston, MA and surrounding areas
Approved (Corporate)
In business since 2015
Free estimates
Credit card accepted
"Very good professional workers. Covered everything so no insulation would scatter. I would recommend them."
Serving Holliston, MA and surrounding areas
Approved
In business since 1985
Free estimates
Small jobs welcome
"Eric was very professional and punctual. He was very informative of my needs. His team was very efficient. Minor cosmetic issues were quickly resolved. Very happy with Custom Insulation Company. Highly recommended!"





+2

Serving Holliston, MA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Very pleased with the work done which included removing attic flooring, removing existing insulation and sealing leaks, adding more insulation to attic and insulating eaves in attic, basement and crawl space. Workers answered questions and kept us informed. Cleaned up very well."





+1

Serving Holliston, MA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
Cleantechconstruction@mi.o is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Serving Holliston, MA and surrounding areas
Approved
Super Service Award Winner
In business since 1985
Free estimates
Warranties offered
"Robert Pino and his brother were amazing not only did they do an impecable job building the shed but he also helps do another project redoing the bathtrom in the house. He was very responsive and fast about scheduling us in. I highly recommend them for future projects"
Serving Holliston, MA and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"I have done a lot of research into soundproofing and had a quite a few contractors stop by for an evaluation and a quote over the past couple years, and Robert stood out with his friendly demeanor, level of knowledge, and being easy to talk to; he seemed to have good experience in soundproofing and actually knew soundproofing concepts I'd read up on earlier (surprisingly many other drywall contractors were either evasive in rating their confidence in their proposed projects or simply did not have good plans or knowledge of options). He worked with me on a plan to redo a wall separating my bedroom from noisy neighbors, and the result is excellent! Robert and his team have turned a single stud wall into a decoupled double stud wall, with all the right elements for soundproofing, such as quality insulation, acoustic caulk and dampening compound (both by Green Glue), socket putty, etc. Robert's choice of materials was well informed, and the quality of his work was very good, neat, and precise. I could tell he enjoys doing his work well. He cleaned up after the job was done, and the new wall was perfectly plastered--all I had left to do was to paint (which I enjoy doing myself). The total expense was very reasonable for the cost of materials and labor. I also appreciated that Robert always kept me up-to-date on his schedule and coordinated his visits--great communication. Overall, I am extremely pleased with the experience and glad that I found Robert and his team! I can heartily recommend his services for your drywall and related projects! I'd like to also note for general reference that soundproofing is a global project: learn the weak areas where the sound travels--it's frequently not just your walls, but also through your floors and through your ceilings, including from neighbors on the same floor as you! You may think that just fixing one area will solve everything, but sound wave propagation needs to be considered from all directions/sources, and week areas need to be identified: e.g. you may need to redo your wall and your floor, for example, or your wall and your ceiling, or all 3 at once, depending on your exact needs and situation."





+24

Serving Holliston, MA and surrounding areas
Approved
In business since 2010
Free estimates
Warranties offered
"WS Builders did an addition to my home and I couldn?t be happier with the results. The team was fast, very professional, and the quality of the work was excellent. They paid attention to every detail and made the whole process smooth. My house looks absolutely beautiful now. I highly recommend WS Builders Corp!"





+75
Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.
R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.
Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.
You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.
Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.
From average costs to expert advice, get all the answers you need to get your job done.

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