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Home » Expert Tips and Procedure on How to Estimate Insulation

Expert Tips and Procedure on How to Estimate Insulation

Estimating the amount of insulation you need is not difficult if you are aware of the fundamental concepts and the understanding of how insulation will be put in. I’ve listed below a few procedures and guidelines about how experts in construction typically calculate the correct size of insulation.

Know Your Zone

The first step you’ll need to do is to determine the zone of the project or the insulation requirements. It is important to know that the U.S. Department of Energy has set specific guidelines for the R-values that are required based on the area where the building is situated. Zoning can range between 1 and 7 so you may need to confirm the zoning requirements as well as the building codes regulations. Look at the map on the DOE website for the specific conditions.
Find out the Insulation Type

The following step is to choose the kind of insulation that is required. The most popular kinds are:


The Room’s Size

For determining the quantity of insulation required first measure the length and height of your room’s walls. Divide the length of the wall by the height of the wall and remember to record the spacing between the studs, so that you can decide on the type of insulation is bought. It is necessary since insulation typically comes in pre-cut lengths or regular rolls that are designed to be able to fit perfectly the spaces between the studs. In this calculation, be sure that the openings for doors and windows are not subtracted. The amounts are used to make up for irregular cavities, non-standard framing dimensions, or even waste amount. Check that each room has been assessed in order to ensure that the hole is the same across the whole house. In some cases, due to changes to structures, the stud depth could differ.

Insulation Estimating – Calculate The Amount Of Rolls

Once we’ve identified the square feet required then we must divide it into the area included within the packaging. Check each manufacturer’s own measurement or size of insulation. The number you see will be the number of bundles you need to create a wall of insulation for your house.

Insulation Software

Another method to accurately determine and estimate what amount of insulation that is required is to use computer software. Certain software programs permit the integration of blueprints for larger projects and some even connect to QuickBooks. The software is able to streamline the process and decrease the uncertainty of estimating insulation using the construction drawings.

Cost Estimation for Insulation and Costs

After you’ve identified the amount of insulation you will require, it’s the time to decide on an amount or figure out the price to install the insulation. Based on the quantity of work, a reasonable figure may be somewhere between $0.75 to @2.50 for each square foot. This figure will be contingent on the R-value and the configuration of the room. The entire insulation process in a typical home could cost as much as $10,000 however the cost for a contractor is between $3000 and $6000. If you’re installing blow insulation, the cost will be around $3.50 or $5.00 every square foot. Keep in mind that all figures will be based on the proposed R-value and wall cavities, the type of insulation used and room layout. These prices do not include the effort to remove previous insulation.