Final air-sealing for a high-performance Barndominium–Fine Homebuilding

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Written By Jim J Neal

Today, we are on-site at a barndominium construction. Many tradespeople have visited the job site. We now need to seal a few penetrations with a variety of Loctite FOAM products.

1. Fill the space between the condenser and line sets

We need to first address the area where the line set connects to the condenser. This is a problem area as there are often multiple areas that need to be sealed back up. That’s why TITE FOAM Gaps and Cracks is my favorite high-density foam. It’s flexible and can fill in large gaps. TITE FOAM is easy to apply, UV-resistant and can be painted. Before you use the can, shake it vigorously for at most 30 seconds.

2. Fill in the large gap above your door

Our walls are often built before the slab is poured. In this instance, the client requested that the slab be lowered by an inch. This left us with a large and unwelcome gap above the exterior door. Although you might think that a large gap filler would be the best choice, we chose TITE FOAM Window & Door as it won’t expand or bow the jambs.

It’s a large gap so don’t try to fill it in all at once. To give it a bit more foundation, I run a few beads of foam low so that you have something to connect to in the subsequent passes.

3. Attic plumbing pipe sealing

There are two plumbing pipes running up the attic space that provide ventilation. These will be sealed with TITE FOAM Big Gaps. The space around the pipe was too tight so we reduced the foam to give the foam more surface area to stick to.

Because of its flexibility and durability, TITE FOAM Big Gaps is ideal for this application. We don’t care about the foam’s final appearance in the attic. Instead, we want it to air-seal the entire area. This means that the foam will expand and fill any voids.

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