Trusted Insulation Contractors in Knoxville, TN

To a small degree (maybe as much as 1-3%), some initial shrinkage is normal, but tests have shown that RetroFoam maintains its physical and insulation properties. Often the void space from shrinkage is less than what can be achieved when installing fiberglass bat insulation.

When first installed, RetroFoam feels similar to a shaving cream. It needs a semi-fluid consistency in order to seal the entire wall cavity and flow evenly around various barriers. It begins drying almost immediately, although it takes between 2-4 weeks to cure. Once dry, it becomes firm, but remains malleable at all times, and can be gently removed and reinstalled.

No. Our goal is to leave the outside of your home exactly as we found it. However, depending on the type of siding there may be noticeable cosmetic changes.

We do our best. There may be a slight difference due to weathering, but on most homes, once the mortar patch dries the hole locations are difficult to identify. We salvage mortar dust from drilling for reuse and or color match

RetroFoam is a new-generation tri-polymer mix of {resin+water+foaming agent+air} mixed on site to create a soft malleable white foam that we inject like shaving cream into a wall cavity. RetroFoam replaces the air and fills the cracks in your walls to save you money and gain you comfort.