Wall Insulation

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RetroFoam injection insulation is a game-changer in retrofit insulation for existing homes.

Re-insulating an existing wall becomes a lot easier with our innovative injection foam. In just one day our team can add major R-value to your entire St. Cloud area home, leaving you more comfortable and saving you money on your utility bills year-round.

Why You Deserve Better Wall cavity Insulation.

Many people think their walls have something in their walls so it is “Out of Sight. Out of Mind”. The reality is that the technology of even 1990 vs 1890 is drastically different. Many homes in Minnesota have very thin and outdated fiberglass in the walls if your home was build after 1960. Before that many homes were fitted with balsam wool which was In many cases only a ½” thick and provided very little protection for your comfort in summer and winter.

Is Your Home Built

Times have changed and the technology for injecting foam into an existing home is finally available in a safe non-toxic odorless form that will keep you and your family safe and comfortable for generations to come.

With RetroFoam, we can fully insulate your walls without having to tear your house apart.

RetroFoam is designed to be injected into the wall cavities of existing homes. As it is being injected, it is the consistency of shaving cream so it fills every corner of the cavity and around plumbing and electrical work. After the foam cures wires can still be pushed through the foam in electrical lines need to be fished down a wall. RetroFoam can be installed by simply removing one course of siding whether its steel, vinyl, wood lap or even half log siding. For other types of exterior cladding such as stucco or concrete block, 5/8” holes are used to access the stud cavities. Even paneled siding that is not removed can be drilled through and coved with trim to make the plugs disappear.

Benefits of RetroFoam insulation

  • High thermal resistance (R-value) insulation which provides comfort and energy efficiency
  • Non-expanding material (not like the canned stuff), making sure your walls aren’t blown out!
  • Completely non-toxic and fireproof keeping you healthy and safe
  • Reduces noise and dampens sound, so you can enjoy the peace and quiet
  • Perfect for retrofitting and re-insulation, since it doesn’t require walls to be opened up
  • Complete installation in your home in just one day!

Unlike blown-in cellulose or fiberglass insulation, RetroFoam will not settle over time. In addition to wall cavities, the material also works really well in concrete block foundations and cathedral ceilings.

This sounds like magic – how does injection foam insulation work?

The key to understanding this special product is how it’s mixed and applied. Our injection foam is a non-expanding composite of water-based resin, foaming agent and pressurized air. We mix it on-site and mechanically inject it into your home’s walls. The only steps we need to take to gain access to the insulation space are removing a strip of siding and drilling a series of small holes in the exterior wall. Once the injection foam is in place, we seamlessly plug the holes and replace the siding. Remember this is a non-expanding foam and will not blow out your walls.

You can only get RetroFoam through a factory authorized installer.

RetroGreen Energy is central Minnesota’s exclusive RetroFoam installer and one of the top five installers nationwide! Compared to other types of insulation, RetroFoam is easier for a trained technician to install properly. This eliminates the possibility of faulty insulation due to poor installation which is common for fiberglass installations. As Factory Authorized installers of RetroFoam, we use special training and tools to make sure your job is done well.

Facts about RetroFoam insulation

  • It will not expand, lose shape, or lose effectiveness. What it will do is raise the structural durability of your home, adding strength and rigidity which will make it more durable over the years through extreme wind, rain, and snow. After insulation, RetroFoam is totally maintenance free and lasts for the life of the home.
  • Even if you already have insulation, RetroFoam can be easily applied with other insulation to provide a more effective insulation barrier. RetroFoam outperforms all other types of wall insulation, especially in extreme cold and wind. Fiberglass R-Values are based on laboratory conditions at 70 degrees with no heating or cooling load, not a real Minnesota climate. Also, unlike fiberglass insulation, RetroFoam is also water-, pest-, and fire-resistant.
  • RetroFoam insulation can be injected into the walls behind any type of exterior. RetroFoam isn’t just for homes with siding. We have retrofitted homes with masonry and stucco, patching the injection sites with no noticeable difference in color or texture. Some homeowners prefer we do our work from the inside, and that process is also simple, fast, and effective.
  • RetroFoam adds safety and value to your home because fires burn more slowly through RetroFoam-filled walls. RetroFoam foam insulation is a Class 1 nonflammable product. In the tragic event of a house fire, this extra time could be the difference between losing one or two walls and losing your whole house to a fire and could also give the extra time needed to get everyone out safely!

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RetroFoam injection foam insulation does what other insulation materials can’t — it’s a real problem-solver. Homeowners benefit from this product’s very high R-value, its ability to fill a space and the way it molds itself around any obstacle

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Injection wall foam

Panel siding injection: when siding can’t be removed
Steel, vinyl, aluminum siding:
Interior wall injection through sheet rock: