How many rolls of insulation do i need

How much roll insulation will I need to purchase? This Calculator should be used as an estimating tool ONLY. Enter the dimensions of the area to be insulated.

Click on Calculate to determine how many square feet of insulation are needed for this job. Determine the square footage to be covered with insulation by measuring the height and width of the surface and multiplying those numbers. An 8-foot by 10-foot wall would be square feet and would require two rolls of insulation at square feet each. What thickness are you trying to install? Each roll of different thickness comes in different sf per roll.

Conventional fiberglass insulation has set the standard in the building industry for many years. Divide the total square footage for each insulation size by the square footage supplied in a package in of insulation to determine the number of insulation bundles needed to insulate the walls of. The most common insulation materials are fiberglass, cellulose and foam.

Tip: The type of insulation you need depends on which is currently installed and the required R-value. I see a common size roll of R-fiberglass is 9. Attic has soffit and gable vents. To determine the number of bags of blown in insulation needed: Measure the depth of your existing insulation and enter this number below. Insulation Calculator Select a Project Area.

Based on your desired R-value, how many total inches of insulation do you need ? If you need a second layer, use unfaced insulation. If your attic already has some insulation : Is the insulation loosefill, or batts or rolls ? Owens Corning does not recommend installing batts or rolls over loosefill insulation. Simply divide the total square feet of the walls to be insulated by the bag or roll coverage and that will tell you how much insulation you need to purchase. Loft insulation calculator. Subtract the from Step from the you got from Step 1. This amount is the total amount of insulation you need in square inches.

If you are blowing in the insulation , divide this number by 12. That will tell you how many cubic feet of insulation you need. The bag or roll of insulation will have a chart indicating how many square feet it will cover.

Same as for blown in, simply divide the bags square foot coverage by the total square feet of your attic. When insulating a shed roof you need to ensure that there is at least a gap above the top of the insulation and that there are ventilators at the eaves. The ventilators allow air to flow in one side and out the other bringing in fresh air and exhausting the moist and damp air from above the insulation.

Use these insulation calculators to estimate how much insulation you may need and how much you could save on your energy bills. Such a high insulation level in the ceiling (unheated attic) can be achieved with 16″ to 18″ of cellulose insulation or high-density fiberglass batts—you may need somewhat more to achieve the recommended R-value after settling. Community Experts online right now. If the distance between the joists is larger than the roll width, it will be necessary to consider how the gap will be filled. Measure the length of the joists across the roof, count the number of joist spaces and work out the total length of insulation required and then how many insulation rolls are needed.

The Floor - if a home is built above a crawl space there will be the need to consider improving or upgrading the insulation beneath the floors. This is usually an Rvalue that costs around $. Choose wool insulation if you need an insulation that can withstand high temperatures. Keep in mind that wool will need regular upkeep and maintenance. Without proper cleaning, wool will break down and rot over time from its natural dirt and oils. We use insulation like a giant blanket around our homes to prevent our energy dollars from disappearing.

The insulation in your attic should be at least thick. It is not uncommon to see to of insulation in a well insulated attic. They come with or without a paper or foil facing that acts as a vapor barrier. If you’ll be doing the work yourself, blanket (batt and roll ) insulation , while not capable of providing an air seal as dense pack and two-part spray foam will, is an affordable option. In a new home, first see our information about insulating a new home , which will help you choose from among the many types of insulation on the market.

Read the label on the batt to find out how many square feet it covers and purchase enough rolls to equal the square-foot area that you need to insulate. Kraft-faced insulation has paper laminated to one side of the fiberglass. Unfaced insulation does not have a paper facing and is fiberglass only.

If you’re unsure as to how much underfloor or ceiling insulation you need for your project, the traditional home insulation calculator method will help you to work it out. To choose the best insulation for your home from the many types of insulation on the market, you’ll need to know where you want or need to install the insulation , and what R-value you want the installation to achieve. The choice of insulation you make largely depends on the area you need to insulate, your home’s climate location, the current R-value of your home, and your budget. Spray foam insulation seals leaks and gaps inside existing walls and is the perfect.

R Value, manufacturer, size of home and location. Sort By: Best Match Best Match. Do I need a radiant barrier or bubble insulation for my my attic?