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Find Insulation pros in Port Washington

Avatar for Triple H Insulation
Triple H Insulation
4.6(
23
)
Insulation - Install or Upgrade

Serving Port Washington, NY and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"Anthony was great!  He and his crew were very cordial, very professional, and provided a thorough report on our home's energy efficiency.  Furthermore, he was very flexible with the billing, and his crew didn't leave a mess.  Thanks to them, our house is much warmer."
Before
Before
Before
Before
Before

+68

Response time8 hrs
Response rate100%
26 neighbors recently requested a quote
Avatar for Zavza Seal, LLC
Zavza Seal, LLC
4.8(
52
)

Serving Port Washington, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"This was the second time I hired zavza seal. This time I needed help with attic insulation for my parents house. Starting with setting up the free appointment, ending with the crew and quality of the work - they deliver a great experience and I highly recommend them for anything waterproofing, insulation, concrete and foundation fixes. If you are looking for a contractor and donâ t know who is trustworthy and professional, go with Zavzaseal, you ll be in a very good hands."
Flooring
Flooring
Flooring
Flooring
Response time7 hrs
Response rate98%
Recommended by95%of homeowners
Avatar for Ecowise
Ecowise
4.5(
24
)

Serving Port Washington, NY and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I needed spray foam done in my warehouse and lots of people kept turning me down, I found this company called Ecowise Insulation and I had a great service with them. They were very nice on the phone, doing there Job clean, respectful and fast. taking care of me like no other company has ever done before. I would recommend."
Response time1 day
Response rate98%
15 neighbors recently requested a quote
Avatar for J Synergy Green, Inc.
J Synergy Green, Inc.
5.0(
9
)

Serving Port Washington, NY and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

We are J Synergy Green, a locally owned company serving our neighbors in Nassau, Brooklyn, Queens, and Richmond counties. We are approved by NYSERDA. We're comprised of industry veterans with more than 21 years experience in servicing and installing residential and commercial solar electric systems. We are also a New York Licensed Contractor with more than 10+ years of experience. We provide the highest level of quality, satisfaction, and value ensuring longevity and peace of mind. \n

Solar Canopy
Solar Tilt Mount
Solar Tilt Mount
Solar Roof Mounted
Solar Roof Mounted

+23

Response time3 days
Response rate96%
18 neighbors recently requested a quote
Chortani Services HVAC
4.6(
193
)

Serving Port Washington, NY and surrounding areas

Approved

In business since 1992

Offers commercial services

Customers say: Quick response

"-came on time - curteous service Answer all question Discussed proble with ac system Duscussed reasonal replacement Curtesy check other ac unit for tune up Through in doing job Checked amp usage of ac Checked wire securely Remove old unit Clean up after job done No argument as reasonable offer Overall satisfied service Would recommand to use again for air condition service"
Response time4 hrs
Response rate100%
Recommended by97%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)

Serving Port Washington, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Moises and his crew repaired water rotted wood in difficult locations and completely finished the garage to every detail from insulation to molding, as shown in pictures here. They thought of every detail that shows their pride over their work. Not only is their work top notch, but they are also easy to work with and very communicative through the whole process. I have already hired them for a second job."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
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FAQs for insulation service projects in Port Washington, NY

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.

The Port Washington, NY homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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