Business Details
23 Years
experience
Energy-Efficient Insulation Experts in Littleton, MA
Dolphin Insulation is a family-owned business established in 2003, dedicated to transforming homes into energy-efficient, comfortable spaces. Our team combines decades of experience in home construction, renovation, and insulation with advanced building science knowledge to deliver tailored solutions. We specialize in cellulose insulation, air sealing, and general contracting, prioritizing safety, sustainability, and cutting-edge techniques.Our commitment to continuous education ensures our team stays ahead of industry trends, providing clients with reliable, innovative services. We serve homeowners across New England, focusing on eliminating energy waste, drafts, and mold while enhancing indoor comfort. Our approach includes personalized assessments, transparent communication, and partnerships with vetted tradespeople to ensure comprehensive, high-quality results.
Services
Insulation Installation
Air Sealing
Ice Dam Removal
General Contracting
Mold Prevention
Soundproofing
Commercial Insulation
Attic Insulation
Basement Insulation
Wall Insulation
Details
- Year established: 2003
Highlights and features
- We use BPI-certified building science experts with 20+ years of industry experience
- Our cellulose insulation solutions reduce energy bills by up to 50%
- We offer comprehensive general contracting services with vetted partner tradespeople
- Our team undergoes continuous training in the latest insulation and energy efficiency techniques
- We guarantee measurable improvements in home comfort and energy performance
Associations and certifications
- Building Performance Institute (BPI)
What people say
Excellent job
Super professional
Huge difference
Highly recommended
Professional crews
Services
Insulation Installation
Our insulation services use dense-pack cellulose to create airtight thermal envelopes, reducing energy costs by up to 50%. We focus on attics, basements, and walls to stop drafts and improve year-round comfort. Our solutions also prevent ice dams and manage moisture to protect against mold growth.
Air Sealing
We identify and seal air leaks in building envelopes to reduce energy loss. Our process lowers heating/cooling demands by creating uniform indoor temperatures and preventing outdoor allergens from entering homes through thousands of tiny gaps in construction materials.
Ice Dam Removal
We permanently prevent ice dams by insulating roof rafters and attics to maintain consistent roof temperatures. This eliminates the melt-freeze cycle that causes damaging ice buildup while reducing energy consumption in both heating and cooling seasons.
General Contracting
Our licensed general contracting services coordinate home improvement projects including windows, roofing, and HVAC installations. We partner with trusted local tradespeople to ensure energy efficiency remains central during renovations while maintaining strict quality control throughout the process.
Mold Prevention
We prevent mold growth by using borate-treated cellulose insulation that resists moisture. Our air sealing and insulation solutions create controlled environments that stop moisture infiltration while improving indoor air quality through reduced allergen penetration.
People
Amanda Alphen
President
Amanda Alphen leads Dolphin Insulation with 15+ years of experience in energy-efficient construction. She focuses on innovative insulation techniques and has received the Outstanding Woman in Business award for her leadership in sustainable home solutions.
Chris Alphen
CEO
Chris Alphen founded Dolphin Insulation with 30+ years in construction. A BPI-certified expert, he emphasizes quality training and safety while volunteering with local community organizations to promote energy-efficient building practices.
Tom Ducharme
HERS Rater
Tom Ducharme specializes in energy performance assessments for new and renovated homes. As a certified HERS rater, he implements advanced insulation techniques that significantly reduce energy consumption while maintaining building integrity.
Questions
How does proper insulation reduce energy costs?
Effective insulation creates an airtight thermal envelope that prevents heat loss in winter and heat gain in summer, reducing HVAC workload by maintaining stable indoor temperatures.
What causes ice dams and how do you prevent them?
Ice dams form from uneven roof temperatures. We prevent them by insulating attics and roof rafters to maintain consistent temperatures that stop snow melt and refreezing cycles.
Why choose cellulose insulation over fiberglass?
Cellulose has superior R-value per inch, manages moisture without mold growth, and provides better soundproofing while being made from 80% recycled materials.
Do you offer commercial insulation services?
Yes, we help commercial building owners qualify for 50-80% rebates through MassSave programs while improving energy efficiency and occupant comfort.
How long does insulation installation take?
Most residential projects complete in 1-3 days depending on home size and complexity, with minimal disruption to household routines.
Videos
Reviews (6)
Maureen Weisner
Nov 28, 2021
Report
Positive:Professionalism,Punctuality,Quality,Responsiveness
Our attic insulation was installed by two very capable employees. They were timely, informative and professional, cleaning up all debris upon leaving. I would highly recommend using Dolphin for this service.
Our attic insulation was installed by two very capable employees. They were timely, informative and professional, cleaning up all debris upon leaving. I would highly recommend using Dolphin for this service.
Deidre Daudt
Aug 25, 2021
Report
I gathered many estimates to remove my old installation in the attic along with the floor boards and new cellulose installation added. Dolphin Insulation made the most sense from vibes, to price, to knowledge. Karen came out to give me an estimate and she was so genuine and down to earth as well as Chris and Dustin who did all the hard labor. It took 3 days to get the job done from removing, to sealing to installing blown in cellulose spray in attic and fiber glass batts along the rim joist of my basement. This company is honest and reliable. Everyone is a hard worker here and if I need any future
Eric Robert
Jun 04, 2021
Report
Positive:Professionalism,Quality,Responsiveness,Value
We used Dolphin Insulation for multiple weatherization items around our house including air sealing, blowing cellulose insulation, etc. From the first contact to schedule the job, to their professionalism, to the quality of their work, Dolphin as a whole is a fantastic group. Highly recommended.
We used Dolphin Insulation for multiple weatherization items around our house including air sealing, blowing cellulose insulation, etc. From the first contact to schedule the job, to their professionalism, to the quality of their work, Dolphin as a whole is a fantastic group. Highly recommended.
Jennifer Kallay
Mar 20, 2021
Report
I requested six quotes for insulation and air sealing work and Dolphin was the best. They were the only ones to appropriately emphasize the air sealing, include removal of the existing insulation to allow for the air sealing to be done properly and generate the most efficient result, and conduct pre and post blower door tests. The team was friendly, professional, motivated to do a great job and as excited as I was to see the results of the blower door test at the end. A great experience!
Suraj A.
Feb 28, 2021
Report
From start to finish, Amanda, Troy and the Dolphin crew were professional, maintained a clean working environment in our house and provided high quality service. Communication was excellent! The team spent almost two weeks at the house completely insulating our basement and attic while properly venting the fans. We immediately noticed a 10 degree rise in our second floor temperature! Thanks Dolphin!
Matt Conlon
Oct 03, 2019
Report
Positive:Responsiveness
Dolphin helped us with blown-in cellulose, proper-vent, air sealing and a attic door cover. They were very good. They listened to our concerns, they were accommodating, clean and communicated well - both on site and over the phone. Very good folks.
Dolphin helped us with blown-in cellulose, proper-vent, air sealing and a attic door cover. They were very good. They listened to our concerns, they were accommodating, clean and communicated well - both on site and over the phone. Very good folks.
