Spray Foam Insulation in Manassas, VA

Extremely detail oriented and all around great people!

Great customer service from the staff.

Timely response and professional work

We had a great experience working with Fifth Fuel from start to finish. Communication was clear and responsive, scheduling was straightforward, and the crew was professional and efficient. The attic insulation work made an immediate, noticeable difference in comfort throughout our home—especially on the upper levels. Everything went smoothly during the install, and Will followed up afterward to make sure there were no issues and to answer questions. He also took the time to thoughtfully walk us through options for improving basement insulation down the line, explaining the pros, cons, and ROI in a way that felt honest and practical rather than salesy. Overall, we felt well taken care of and genuinely appreciated the follow-through and transparency. Highly recommend Fifth Fuel if you’re looking for knowledgeable, professional insulation work that actually delivers results. We're planning on doing more insulation projects with them given the success of the attic insulation!

I couldn’t be happier with the service I received from Fifth Fuel. From start to finish, the team was professional, knowledgeable, and incredibly thorough. They air sealed and reinsulated both my attic and crawl space, and the difference was noticeable almost immediately—my home feels more comfortable, more efficient, and quieter. They took the time to explain the process, answered all my questions, and left everything clean and tidy when the job was done. It’s clear they take pride in their work. I highly recommend Fifth Fuel to any homeowner looking to improve comfort and energy efficiency.

We hired The Fifth Fuel via Southland Insulators to re-insulate our 35 year old attic space. They did a great job - on-time, clean, courteous crew that communicated well with us throughout the job. Cost was very reasonable and we are already noticing improvements in noise levels and thermal efficiency in our home. Definitely recommend for this type of work.

We had a wonderful experience with Prudent Homes. We hired them to clean out and re-insulate the attic, and their attention to detail was wonderful. Furthermore, they were above and beyond, helping us to reinstall the floor after they had taken it to seal the joints below. They even extended the floor to give us extra room for storage. They worked nonstop from 7 AM till 6 PM. Edgar, The project manager was phenomenal and David, the owner, was extremely helpful.

I recently had the pleasure of working with Prudent Homes Insulation to replace the insulation in my attic and I couldn’t be more satisfied with the entire experience. David (the owner) came to give the initial estimate and his knowledge, experience, and expertise were immediately evident. He shared valuable information about all of the different insulation options to help me make my decision. The estimate he provided was very fair – $1,700 less than an estimate I received previously from another company for an 850 sq/ft attic. The work I had done included: vacuuming out the old cellulose insulation, re-connecting all of the bathroom vent pipes running through the attic, prepping the attic with anti-bacterial and anti-pest treatment, spraying closed-cell foam insulation, installing a pull-down staircase, and relocating a recessed light that needed to be moved. From start to finish, David was easily reachable, responsive, and accountable. The insulation team was punctual, thorough, and precise. They finished all the work in two days. I felt that they completed the job efficiently without cutting any corners, and the workmanship/results exceeded my expectations. I highly recommend David and Prudent Homes Insulation to anyone in need of insulation services.

We had an excellent experience with Prudent Homes! They removed our old insulation, sealed the attic, and installed new fiberglass to improve comfort throughout our home. The owner, David, was professional, thorough, and transparent—his quote was fair, and he promptly answered all our questions. His crew (Eduardo, Yonathan,and Samuel) were polite, efficient, and kept us informed every step of the way. Quality work at a fair price—highly recommend!

We contracted with Comfenergy for insulation removal, air-sealing, and new insulation at a historic hotel renovation we are managing while the building remains occupied. Access was difficult and we had to protect finished areas and Guests below. Their crews showed up consistently, worked clean, coordinated with other trades, and stayed on schedule. They installed an attic catwalk system, sealed penetrations properly, and completed the work without disrupting the hotel's operations. We had zero issues during the project and the Owners are extremely satisfied with the results. I would absolutely hire them again for future projects.

We chose this company based on some coworkers recommendations (I am a licensed realtor of 20 years in this area) and the crew went above and beyond expectations. Final product (new attic insulation) replaced what was most likely original insulation, is now to code for our county and will pass any home inspection. I had quite a lesson on attics from this company and learned a lot during the process. We also want to give a special shout out and thank you to Carlos on the install team. He noticed some electrical items that needed to be addressed in the attic before new insulation went in, otherwise we would not have known. I was able to bring in a licensed electrician to get the work done. Thank you Carlos!!

Melvin and his phenomenal team air-sealed and insulated my entire attic assembly - including R60 on both flat and sloped surfaces. The team also encapsulated the duct system and applied a radiant barrier. I am already noticing considerable changes in ambient temperature and air circulation on the top floor, as well as in certain rooms. I also want to thank Jason for the thorough review and discussion of options and for describing the costs and benefits of each solution. I learned a lot in the process. I look forward to further improvements with this team. Thanks again.

We needed spray on foam insulation to encapsulate our crawl space. Southland came highly recommended by a trusted friend. Southland scheduled us and came out at the specified time and went right to work. The two men were very professional, conscientious, and took care not to damage the yard or landscaping with their long hose around the house. Their equipment is state of the art. When they finished, they cleaned everything up as if they were never there. A couple of weeks later, we noticed a small spot behind some duct work in the cellar that had been missed. We called Southern and they came right back out and took care of in no time. We are extremely happy with their work and now I too can highly recommend them!!!

I needed insulation for my new house. Contacted several companies. Southland Insulators were the most professional in terms of response, options of insulation & final recommendation. The whole process was done smoothly as agreed upon. Afterwards I needed a follow-up for specific areas like around main door entrance the response was as prompt and professional as before. Thank you Southland Insulators I really couldn't be any happier for a job well done.

Southland Insulators / Fifth Fuel encapsulated my large crawl space and they did an outstanding job and their price was great also! The crew was outstanding! They first removed all of the old insulation and other debris in the crawl space. Then they put foam board along the exterior crawl space walls and a heavy liner on the floor sealing any cracks etc. with spray foam. They were very neat. Removing all trash and minimizing any small trash from blowing (it was windy the day they removed the old insulation). I highly recommend this company.

All Pro is a great contractor to work with - they are reliable on scheduling and they consistently deliver high quality products and top-notch workmanship. They are our go-to contractor for shower doors, house hardware, and insulation.

Great people to work with