Cost to insulate attic: Insulating an attic costs between $1 and $7 per square foot on average.
This works out to an average project cost of up to $1,500, including labour and materials.
Insulation for smaller attics can cost as little as $500, while insulation for bigger attics can cost as much as $4,000.
One of the most cost-effective ways to reduce your heating and energy expenditures is to have good insulation in your home, particularly in your attic.
This is due to the fact that a poorly insulated attic space allows warm air to escape and cold air to enter your home.
If you live in a house with no attic insulation, don’t let another summer pass you by without addressing the problem.
Use our guide to figure out how much it costs to insulate an attic, then hire an insulation contractor to help you keep your home’s temperature under control.
The Cost of Insulating an Attic
The cost to insulate an attic will vary, just like any other home repair project.
The total cost will be made up of the materials and labour costs for installing insulation. There are a variety of materials for attic insulation to choose from.
Cost of Attic Insulation Per Square Foot by Type
There are numerous types of attic insulation materials available. We’ve broken down the attic insulation costs per square foot for many of the most common types of materials on the market in the table below.
Insulation that is blown in
A long pipe attached to a machine blows this well termed insulation into your attic space. You can either hire an insulation expert or rent an equipment for the day.
The material’s tendency to settle over time and the (sometimes) necessity of drilling a small hole into the side of your home to install this type of insulation are advantages,
while drawbacks include the material’s tendency to settle over time and the need to drill a small hole into the side of your home to install this type of insulation (the hole is plugged with similar to identical material).
Blown-in insulation comes in three different varieties. It’s typically a matter of personal opinion, but you can use this map from Energy Star to figure out which type is ideal for your climate.
Fiberglass: Fiberglass insulation is a low-cost choice, costing around $0.35 per square foot, or about $175 in material expenditures for a 500-square-foot attic.
Cellulose: A more environmentally friendly material consisting of recycled newspaper and cardboard, cellulose insulation costs about $0.33 per square foot, or $160 for a 500-square-foot attic.
Rock Wool: The most expensive blown-in insulation, with a dense consistency similar to sheep’s wool. You’ll pay around $1,200 for a 500-square-foot attic, or $2.40 per square foot.
Batt insulation, which is relatively inexpensive and easy to install, works well in attics and is a fantastic option if you want to do your own insulation.
It comes in rolls and can be cut into strips to fit into tight areas. Batt insulation costs roughly $2 to $4 per square foot on average.
Insulation Using Spray Foam
Spray foam insulation is similar to blown-in insulation in terms of installation. The distinction is in the sort of material used.
This sort of insulation is constructed of foam rather than bits of substance, as the name implies.
As a result, it can reach even the tiniest nooks and crannies for better temperature management.
As a result, the cost of spray foam insulation per square foot is slightly more than other varieties, ranging from $3 to $5.
Insulated Panels for Structural Use
SIPs, or structural insulated panels, are an excellent choice for insulation in new built homes.
However, if you want to save money on insulation replacement and already have insulation in your home, SIPs might not be the ideal option.
Because you might be looking at a more significant makeover than merely adding insulation, such as removing wood panelling, this is the case.
However, solely for structural insulated panel materials, you may be looking at a price range of $4 to $7 per square foot.
Installing Attic Insulation Is Expensive
If you’re employing a pro to finish the work, you’re probably curious about the labour cost of installing insulation.
While you can engage specialised insulation experts, a general contractor is frequently a better alternative.
Depending on the sort of insulation material you’re putting, you should anticipate to pay around $70 per hour, or between $1.50 and $3.50 per square foot.
Cost of Insulation Replacement
In most circumstances, you won’t need to replace your attic insulation altogether.
Only in the event of an animal infestation or severe water damage would a professional be required to pull out the existing insulation before installing new materials.
It does happen occasionally, and if it does, you’ll have to pay to have your old insulation removed first.
The average cost of removing attic insulation is $1 to $2 per square foot.
If you require an electrician to check for damage to junction boxes or wires, expect to pay around $80 per hour on average.
Then, of course, you’ll need to replace your insulation. Calculate your attic insulation cost per square foot using the data above.
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