If you plan to renovate your home, that's a good time to improve your home's insulation. Adding insulation can make your home more comfortable and it helps get the best performance out of your energy-efficient HVAC. Spray foam insulation is an option to consider because it seals as it expands which makes it a good choice for the attic and exterior walls too. Here are a few things to know about adding this type of insulation.

You May Want To Start With An Energy Audit

If you're not sure how well your home is insulated, an energy audit can show what you need to know. The audit pinpoints areas of your home that leak air so you know exactly where the problem areas are located. You may find you only need to add insulation to the attic, or you might find the exterior walls need additional insulation too.

Spray Foam Can Be Added To Existing Walls

If you're renovating, you may intend to replace the drywall, and this makes applying spray foam an easy job once the wall is open. However, it isn't necessary to open up the walls to use spray foam insulation. The foam can be sprayed into wall voids through holes in the wall that are filled in later. This usually requires a skilled technician since using too much foam could cause the insulation to bust through drywall as it expands and hardens. Spray foam can be used on walls that have no insulation now as well as walls that have fiberglass sheet insulation. The method of installing the insulation might vary if fiberglass batt insulation is present but the results are the same. Just make sure the old insulation isn't wet or moldy because if it is, the insulation should be removed even if you have to open a wall to do it.

Spray Foam Insulation Has Multiple Benefits

The advantage of spray foam insulation is that it expands as it is applied so it can fill in gaps and wrap around unusual shapes. This makes it very effective at sealing air leaks in your attic. However, it has other benefits as well such as being fire retardant, water resistant, and mold resistant. The insulation can add structural support when it's hard and it can even act as a sound barrier.

Many new homes receive spray foam insulation as they're being built, but you can hire an insulation contractor to retrofit your home with spray foam and use it in the attic, exterior walls, and even your crawlspace. With improved insulation, you might notice lower power bills and increased comfort when the weather is hot or cold outside.