Retrofit Home Insulation
Upgrade Your Home Energy With Lapolla Spray Foam!

Upgrade Your Efficiency

One of the best ways to retrofit your existing home is to eliminate the uncontrolled flow of air and moisture that moves in and out of the structure. Allowing unwanted outside air to enter and conditioned air to escape will increase your energy consumption and negatively impact your overall comfort. When retrofitting your home, consider first your greatest points of energy loss - attics and crawls spaces. Sealing these areas with FOAM-LOK® spray foam insulation will greatly enhance your comfort and provide savings for the life of your home.


Lapolla Foam-LOK™ Retrofit Foam approved applicators have an aptitude for building science solutions. All approved applicators undergo extensive training to ensure they are qualified to recommend the right solution for each situation they encounter and to also ensure their ability to perform professional energy efficient upgrades for their customers. At Lapolla, our management staff and network of regional account managers have decades of experience in the insulation and spray foam industry, further insuring the success of each and every Lapolla Foam-LOK™ applicator.

Lapolla Foam-LOK™ approved applicators value a collaborative approach to evaluate, design and delivery air tight homes to their customers. With the addition of Foam-LOK™ Retrofit Foam Insulation and/or Foam-LOK™ Sprayfoam, homeowners gain “peace of mind” that their home delivers maximum protection against energy loss and maximum comfort for their family.

Why Spray Foam?

Designing, building or retrofitting an energy efficient home is a professional approach to identifying traditional building envelope problems and correcting them through the use of spray foam insulation and other air sealing products. Conventional insulation products do not address many of the building envelope concerns that exist today such as:

  • Air infiltration
  • Vapor Drive
  • Non-Conventional Framing
  • Non-ventilated attics/crawl spaces

Insulation should add value to energy savings, indoor air quality, safety, durability and comfort. Lapolla spray foam insulation is designed to meet all of these demands. Homeowners can gain peace of mind that their home delivers maximum protection against energy loss and maximum comfort for their family.


Foam-LOK™ Retrofit Foam Insulation adds tremendous R-value to exterior walls, achieving up to R-13 in 2 x 4 walls and up to R-21 in 2×6 walls. Additionally, Foam-LOK™ Retrofit Foam Insulation reduces energy use in buildings beyond its stated R-value because Foam-LOK™ Retrofit Foam:

  • Reduces moisture infiltration through air leakage.
  • Minimizes dew point problems and condensation.
  • Avoids thermal bridging & resists heat movement in all directions.
  • Provides reliable performance under varying conditions.

There are very few things that homeowners can do in the way of home improvement that will actually yield a return on investment. With energy savings of up to 50%, Foam-LOK™ Retrofit Foam can not only pay for itself, but can actually save you money for the entire life of your home.

Retrofit Insulation Applications

FOAM-LOK Retrofit Foam is specifically designed for injection and pour applications into existing wall cavities and block wall constructions. FOAM-LOK Retrofit Foam provides the same physical properties characteristics of the FOAM-LOK Open Cell spray applied insulation system and allows the applicator to insulate and air seal existing walls without removing the interior face of the existing wall. FOAM-LOK Retrofit Foam may also be used to insulate the cavities of existing block wall constructions.

Attic Applications Benefits

A significant temperature variance between the living space and the attic creates excessive stress on the HVAC system and compromises energy efficiency and comfort. By applying FOAM-LOK spray foam to the underside of the roofline down to the top plate, the attic becomes part of the conditioned space.

  • Eliminates unwanted air infiltration
  • Maintains interior conditioned temperatures
  • Protects the home from insects and rodents
  • Reduces energy consumption
  • Eliminates wind-driven rain from entering the home
  • Unparalleled wind uplift protection

Crawl Space Applications Benefits

Traditional design of crawl spaces allows for air movement and moisture to collect beneath the home, which comes with many unintended consequences. By applying FOAM-LOK spray foam between the floor joists, and directly to the subfloor sheathing, an air and moisture barrier is created, protecting the living space above.

  • Keeps floors warm in the winter
  • Eliminates unwanted air infiltration
  • Maintains interior conditioned temperature
  • Protects the home from insects and rodents
  • Eliminates unwanted collection of moisture
  • Significantly reduces the risk of mold and mildew

Affordable Energy Upgrades

Home energy upgrades are more affordable today than ever before. Programs such as Home Performance with Energy Star, and others, are paving the way for homeowners to better afford home energy upgrades.

With 10 year unsecured financing, many retrofits can be cash flow positive to the homeowners budget from day 1. The energy savings of 30%-50% on average, will typically offset 75%-100%+ of the monthly cost of the project.

Related Resources

What is R Value?

The basic function of insulation is to provide a resistance to the flow of heat. R-Value is the term in which an insulation's thermal resistance is rated. Which also indicates the resistance to the flow of heat.

Metal Building Application

Spray foam insulation are proven to work well in a variety of climates and scenarios.  Licensed property specialists can apply the solutions onto ceilings, floors and walls, and the materials quickly seal a building's envelope.

How Safe is Spray Foam?

Spray Foam material is just as safe as the foam pillows you rest your head on.  As it is also used in clothing, automobiles, and electronic equipment as well as many other daily used items.

Crawl Space Insulation

Crawl spaces are peak entry points where humid summer or cold winter air can disturb a home’s temperature stability.  This especially can cause energy bills to skyrocket during the peak of winter and summer.