Our mission is to enhance the quality of life for our customers through the installation of quality building performance improvements.
Since 1974, we have helped over two million homeowners address rooms that are always too hot or too cold, eliminate unwanted drafts and reduce unnecessarily high energy bills.
We pride ourselves on the quality of service that comes from well-trained, diligent and respectful employees. Moreover, our installation crew leaders are certified by the Building Performance Institute, a national organization that sets the standard for residential energy efficiency retrofit work.
Let us help you get your house in line today.
Extension 685 for phone.
Additional DBAs - Inspired Marketing LLC, Inspired Green. Additional phone number - (517) 321-4935.
Business highlights
51 years of trusted experience
Services we offer
Energy analysis, air sealing and insulation, attics, basements, crawl spaces, exterior walls, lighting, window installation, heating, ventilation & air conditioning (HVAC).
Great job. Tail end of winter job but I did feel the difference on the few cold days in March. Hoping for a big improvement this summer. My only complain is that they underestimated the amount of attic storage space that we would lose because of the new insulation. Now I have to build it back up a bit to be over the insulation.
Description of Work: Blew in EcoFill R-49 insulation in attic. Also sealed attic entry (pull-down) and installed rafter baffle vents. Also weather stripped around front door to seal it.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,860
Jodi B.
03/2013
5.0
insulation
+ -1 more
Very well, on time, quick,courteous.
Description of Work: Insulation & air sealing in attic to prevent energy loss.
Rating Category
Rating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
4.0
punctuality
5.0
Yes, I recommend this pro
$1,700
Gene B.
03/2013
5.0
insulation, replacement windows
+ 0 more
They did an excellent job. My power bill has been reduced big time!
Description of Work: They totally reinsulated my attic and sealed off the foundation throughout my home. The also installed a door for no cold air to come in.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$3,300
Joseph V.
03/2013
4.0
replacement windows, energy audit
+ 0 more
They did more or less exactly what they promised to do. I found their service useful. It was a little bit different than what I expected, but I was not disappointed.
Description of Work: I have used Mark Group Inc for home energy audit.
Rating Category
Rating out of 5
quality
4.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0
Yes, I recommend this pro
$75
dean S.
03/2013
4.0
insulation
+ -1 more
entrance to wall spaces for insulation installation was done through interior walls so be prepared to have extra work if not done from the exterior
Description of Work: Insulated walls and attic, installed attic hatch, foamed rim joist in the basement.
Rating Category
Rating out of 5
quality
4.0
value
4.0
professionalism
4.0
responsiveness
4.0
punctuality
4.0
Yes, I recommend this pro
$8,000
Ashley C.
03/2013
5.0
insulation
+ -1 more
The service that was provided by the Mark group was wonderful. My attic space is only about 24 inches high and the insulation that was previously there was only about 6 inches high. We had a lot of problems with heating our second floor. We had called several other companies and when we told them that our attic was only 24" high, they immediately told us that putting insulation in could not be done. Then we called The Mark Group. The representative was very knowledgeable and helpful. The representative told us even though our attic space was small, they could get the job done. He assured us they would send someone who would fit in that space, and they did. Their technicians were on time, polite, and cleaned up after themselves. We have noticed a big difference in the warmth of our second floor in the winter and it even stays cooler in the summer while the air conditioning is on. Working with The Mark Group was a great decision! We highly recommend them!
Description of Work: The Mark Group added insulation to our 24" crawl space attic and sprayed foam insulation in our basement around draft sites.
Rating Category
Rating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,800
Jeffrey & Cathy C.
03/2013
5.0
insulation
+ -1 more
Everyone very professional & friendly unfortunately couldn't very fun because of weather, but expect to have that done soon.
Description of Work: Attic insulation plan D.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$3,100
Laura L.
02/2013
5.0
insulation
+ -1 more
They arrived on time. Both techs were equally knowledgeable, courteous and professional. The work was efficient and without any problems. Clean up was exceptional.
Description of Work: We had the attic full sealed and upgrade to R60 with eco-friendly insulation. We also had a stairwell adjacent to the garage sealed and additional measures in the basement.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$4,800
sharon H.
02/2013
5.0
insulation
+ -1 more
I would use this company again. they answered all my questions (which i always have alot of). And I immediately felt a difference in the warmth/seal of the house.
Description of Work: Mark Group added additional insulation into my attic. They also attempted to add insulation into the bathroom wall but found out after cutting a small hole in the wall that there was only 1/2 inch between the brick and wallboard in the bathroom. BUT they were very good in patching up the hole they made and apologized for not realizing this problem when they originally came in for the estimate. Their work in the attic was quick and very professional. I work out of my house and am on the phone a great deal. They worked around my phone calls. They cleaned up after themselves and actually found an old lamp in the corner of the attic that I had never seen before and brought it down for me.
Rating Category
Rating out of 5
quality
4.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$3,000
David R.
02/2013
5.0
insulation
+ -1 more
Was on time, worked hard ad cancelled unnecessary work.
Description of Work: Insulated ceiling with Eco Fill Glass, sealed and insulated side walls around bedroom.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,000
Laurie P.
02/2013
5.0
insulation
+ -1 more
Great. Workers were punctual, finished quickly and cleaned up.
Description of Work: Bonus room insulation and crawl space insulation.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$900
Daniel S.
02/2013
5.0
insulation
+ -1 more
The service that we got was a total seal, it is energy star rated. There is a certificate that comes with it. They were on time and it took them two trips to get the whole attic done, but they got it done.
Description of Work: We did use the Mark Group for attic insulation.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$6,000
Thomas A B.
02/2013
5.0
insulation
+ -1 more
It went extremely well, it was a one day job and cleaned up afterwards. Excellent!
Description of Work: Had home insulation installed.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$5,400
Matthew M.
02/2013
5.0
insulation
+ -1 more
The team arrived on time, was thorough and professional, and completed the work just as they said they would.
Description of Work: Insulate attic.
Rating Category
Rating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$6,000
Robin L.
02/2013
5.0
insulation
+ -1 more
Great. Prompt. Neat. Polite. Thorough. Who could ask for more!
Description of Work: Spray foam BSMT Band Boards. Attic high hat covers & weatherization.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,100
tom C.
01/2013
5.0
insulation
+ -1 more
Gordon went through our house systematically, identifying areas where we could ease the heat loss we were experiencing and letting us know how/when Mark Group could or could not help us. He sat down with me to explain the criteria that affect efficient home heating and presented me with a detailed proposal of services and costs. Once we called to accept the bid, Gordon schedule a crew for the next week. Steve and Robert arrived at exactly the promised time, also explained what they would be doing and how they would do it. Over the course of the day, Gordon phoned to confirm that all was progressing as promised. Robert checked in every hour or so to point out steps they could take to maximize our efficiency. When they left our house was still clean, our attic was very well insulated and we hope to realize oil heating cost savings that will pay for the job in just a few years.
Description of Work: Professional, Comprehensive, Friendly - and should pay for itself
Rating Category
Rating out of 5
Yes, I recommend this pro
$2,800
Christian K.
01/2013
5.0
insulation
+ -1 more
Insulators were on-time & finished the job on-time.
Description of Work: Installed insulation in house attic.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,500
Suzanne W.
01/2013
5.0
home inspection
+ -1 more
Workers arrived on time, took good call to protect the house where moving in martial and very efficient in getting the job done on time.
Description of Work: Inspection in attic.
Rating Category
Rating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$3,000
erika W.
01/2013
5.0
insulation, energy audit
+ 0 more
Already this year it is making such a huge difference in my oil bill. I worked with them hand in hand about each detail I wanted. They were very knowledgeable and respectful to me. They were great. They worked with me side by side. I stayed up there with them during some of the work. They have sent me a lot of calls for referrals. I have recommended them highly. They worked in tough conditions but they did a great job.
Description of Work: They re insulated the attic. They also did two part spray foam in the basement around the foundation. They also helped with energy efficiency and explained the different options to me.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$300
Linda H.
01/2013
5.0
insulation, energy audit
+ 0 more
The crew arrived on time. Worked efficiently within a four hour period. Also gave me recommendations for additional energy costs savings in our house. They were professional, personable and thorough.
Description of Work: Air seal and insulate 990 sq feet attic space. Install two roof exhausts for bathroom vents. Install rafter baffle vents. Insulation performance from R-38 to R-49
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,900
John B.
12/2012
4.0
insulation
+ -1 more
Ok, though their quoted price to insulate my attic was relatively high.
Description of Work: Came out to offer advice and a quote to improve my home's energy efficiency.
Rating Category
Rating out of 5
value
1.0
professionalism
4.0
responsiveness
3.0
punctuality
4.0
Marcy N.
11/2012
5.0
insulation, energy audit
+ 0 more
I called the Mark Group to get their opinion on how to deal with a frigid walk-in closet. Gordon came out, and after talking about the problem(s), we walked around the house with a "heat sensing gun" to see where the heat loss areas were and to determine if adding insulation would solve the problem. Since there is already insulation in place and it's doing its job, he didn't feel that adding more would make a significant difference. He was able to reassure me that previous insulation work had been done well (by another company), and that in general my house is sound and well-sealed. Ultimately, he suggested changes I can make myself to try to control the temperature in my garage, which is a contributing factor in the temperature problem. Needless to say, I'll be visiting my local Home Depot or Lowes soon to purchase the items he recommended. It was a pleasure to talk to someone who was truly interested in helping me correct the temperature problems, even when it didn't result in money in his pocket or a signed contract. I appreciated his honesty and helpfulness, and will cheerfully recommend him to any of my friends who have insulation or uneven temperature issues in their homes.
Description of Work: No services were performed
Rating Category
Rating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
James D.
11/2012
5.0
insulation
+ -1 more
They were very professional and did for the most part all that was expected but I was disappointed with one item. They sealed the door with fabric and evaluated the CFms' of the house. This is an evaluation of the breathability of a house. Every house needs to breath if it does not it will create a lot more damage than good. My house was tight to begin with so there was only so much sealing they could do. I wanted my basement sealed as well but they could not do it because the house would be too tight. I would have liked to known this before I signed the contract. I felt that my house was drafty and the savings I would experience would justify the expense of the sealing but if I would have known my house was as tight as it was I may not have done the sealing of the attic.
Description of Work: Sealed the attic and added insulation.
Rating Category
Rating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,600
Ashley M.
10/2012
5.0
insulation
+ -1 more
Gordon at Mark Group came out to my home and gave me an assessment of what services they could provide. He was very engaged, enthusiastic, and knowledgable. The day before the scheduled work was to occur, they emailed me to confirm my appointment, and when I didn't respond within a few hours, they followed up with a phone call to confirm- which I really appreciated. In the end they did a basic energy seal basement upgrade (spray foam along floor joists). They also did a blower-door test before and after (to show you the difference immediately) and installed a CO2 detector. The crew that came to do the work was very clean and friendly. While they were performing the work, Gordon called me to confirm how the work was progressing. As someone who is routinely frustrated with the lack of communication by contractors, I was shocked that he called WHILE the job was in progress- and also that he seemed to genuinely care that I was happy with the service. I have already recommended Mark Group to a friend, and will continue to do so. I was extremely impressed with everyone I dealt with at Mark Group.
Description of Work: In-home assessment, basic energy seal (spray foam at basement floor joists)
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,300
Marcie F.
09/2012
5.0
insulation, energy audit
+ 0 more
The work crew arrived on time, completed the work, and left the area cleaner than when they arrived.
Description of Work: We had an energy assessment to determine where we were in need of insullation and sealing to help reduce our cost of maintaining a confortable interior temperature. We thought that we had solved this issue in the 70's when we had installed insulation by another company. Mark Group found many areas lacking in enough insullation, plus simple areas that just needed foam sealing. Using their information, we decided to do the smaller job in the garage first. The 2 bedrooms that are over the garage were always cold in the winter, so we new this would help with that situation. They showed us actual open areas in the ceiling of the garage that were letting outside air in.
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.
*Contact business to see additional licenses.
Service Categories
Insulation,
Energy Efficiency Auditing,
Heating and Air Conditioning,
Home inspection,
Windows,
Water Heaters,
Handyman Services,
Doors,
Basement Waterproofing,
Plumbing,
Electrical,
Roofing
FAQ
Mark Group is currently rated 4.5 overall out of 5.
Monday: 9:00 AM - 5:00 PM
Tuesday: 9:00 AM - 5:00 PM
Wednesday: 9:00 AM - 5:00 PM
Thursday: 9:00 AM - 5:00 PM
Friday: 9:00 AM - 5:00 PM
Mark Group accepts the following forms of payment: American Express,Check,Discover,MasterCard,Visa
Yes, Mark Group offers free project estimates.
No, Mark Group does not offer eco-friendly accreditations.
No, Mark Group does not offer a senior discount.
No, Mark Group does not offer emergency services.
Yes, Mark Group offers warranties.
Mark Group offers the following services: Energy analysis, air sealing and insulation, attics, basements, crawl spaces, exterior walls, lighting, window installation, heating, ventilation & air conditioning (HVAC).