Insulating Interior Basement Walls

The most attractive & least expensive DIY alternative to spray foam

An excellent, cost-effective way of insulating your basement interior, including the cold, damp ceiling, walls and floor, is with closed-cell, injection-molded EPS foam panels from InSoFast!

InSoFast patented EPS insulation panels are designed for use in commercial-scale energy efficiency projects, but their amazing simplicity has made them popular with homeowners for DIY basement and interior renovations.

As you plan your basement remodeling, we encourage you to read our articles, “What to Know About Basement Insulation,” and “Preparing Your Basement for Insulation,” and take a look at the informative videos and resources on the InSoFast website.

Insulating Interior Basement Walls  

Basement Insulation Options: Pros and Cons

Although popular, inexpensive and readily available, fiberglass is not a good choice for insulating a basement. It is a notoriously tricky and complicated process and is not a DIY kind of job.

Fiberglass insulation works like a sponge and is a recipe for mold, rot and poor indoor air quality. Using vapor barriers is not good building practice either. If the wall happens to get wet for any reason, the vapor barrier will prevent it from drying.

Spray foam can be sprayed directly onto the concrete wall (block, stone or masonry) to lock out moisture and create a great vapor barrier, but this is typically the most expensive method of basement insulation. Spray foam insulation also takes longer to install and can be a very messy affair.

The most attractive alternative to spray foam is to insulate your basement interior with closed-cell, injection-molded EPS foam panels from InSoFast! It is very cost-effective and can easily be done by do-it-yourselfers with a minimum of tools and supplies.

Advantages of InSoFast Insulation Panels

InSoFast continuous insulation comes in 2-foot x 4-foot interlocking panels of varying depths. The UX 2.0 Panel is 2-inches thick with a flat surface that exposes the face of the embedded studs. With a continuous R-value of 8.5, rot-resistant framing, drainage channels, electrical raceways, and a simple, stackable interlocking design, this panel is exceptionally cost-effective for base-level code requirements.

When you need a thicker panel with a higher R-value or an exterior-specific panel without electrical raceways, the EXi 2.5 Panel, at 2 ½-inches thick, is an excellent choice. Its tighter interlocks and recessed studs keep the EX barrier truer and straighter. This InSoFast panel’s continuous R-value of 10 outperforms traditionally framed R-15 batt walls and provides 20% more insulation than our UX panels.

The features that make InSoFast panels so easy for do-it-yourselfers to use include:

  • Cut to fit with handsaw, jigsaw, sabre saw or table saw
  • Seamless interlocking edges require no taping
  • Easy to handle 2’x4’ panels stack like LEGO® bricks
  • Notched alignment system ensures that panels and studs stay aligned during installation
  • Built in embedded stud framing aligns every 16-inches on center to simplify gluing or screwing panels to walls
  • Built in electrical raceways run horizontally and vertically along the edge of every panel
  • Moisture control channels prevent moisture from getting trapped in walls
  • Straight surface can support drywall and paneling as well as cabinets and TVs
 

InSoFast EPS insulation panels are manufactured and shipped free of charge to project sites across the country from our manufacturing facilities in Idaho, Massachusetts and Minnesota.

Call us today at (888) 501-7899 to learn more about insulating interior basement walls. We are always happy to answer any questions you may have.


Watch Video