Foundation Insulation

Insulation can help reduce the heat loss from your structure. Insulation on the inside of the house is typically the most effective. If you do want to add insulation to the outside of your foundation we can help with one of our insulation options.

Insulation Boards Types:

Extruded Polystyrene Insulation Board

Extruded Polystyrene Insulation Boards comes in many differnt thicknesses and types. It is easy to install and adds various R-values based on thickness.

Fan-Fold Insulation / Protection Board

Most fan-fold boards are extruded polystyrene. Fan-Fold Insulation comes in smaller thicknesses and various types. It is easy to install and adds a little insluation value.

Warm-N-Dri Insulation / Protection / Drainage Board

Warm-N-Dri is a pressed fiberglass insulation / protection / drainage board that is used in conjunction with the Tuff-N-Dri Waterproofing System. Warm-N-Dri is avable in three thicknesses.

3/4 inch Warm-N-Dri – (R-3)

3/16 inch Warm-N-Dri – (R-5)

3/8 inch Warm-N-Dri – (R-10)

Insulation / Drainage Compare

Warm N Dri

Thermal Drain

DrainMat + EPS

Fanfold Board


R-3 to R-15

R-3 to R-15

R-5 to R-20


Flow Rate Comparison

Low Flow (Sand)

Low – Mid (Sand)

Highest (Gravel)


Eliminate Hydrostatic Pressure

Added Warranty

Resistance to Backfill





UV Stability





When to Use

Thermal Break (Basement walls)

Thermal Breal (Basement) / Added protection

Commercial ? Custom Projects

Protection Course

Added Performance

Higher Tensile Strength (Waterproofing)

Higher R-Value

Low cost Protection

Got Foundation Leaks?

We can fix them! Even Active Leaks. Inside or Out. Cracks, Ties, Honeycomb, Etc.

Learn More