BUY ONLINE PICK UP IN-STORE Available for in-store products only. Learn More ›

Check out all of our current promotions and shop incredible products for less.

Manitoba Hydro's Power Smart Residential LED Lighting Program

Manitoba Hydro is offering instant rebates of up to 50% on select ENERGY STAR® certified LED bulbs.

Learn More

Takecharge Fall Instant Rebate Program

TakeCHARGE is offering instant rebates on select energy efficient products.

Learn More

It’s Like There’s No Tax* Event On Major Appliances

*Amount equivalent to the applicable sales tax will be deducted from the price shown.

Learn More

Purchase Any Toilet and Get It Installed for $99* When Installed Through Installation Services

Cannot be combined with any other offers. Includes Basic toilet installation only.

Learn More

Holiday Store Hours

Check your local store hours before heading out to shop. 

Learn More

Extended Warranty on Select Toro Snow Blowers

Receive 1 Additional Year of Warranty Free when you purchase select Toro snow blowers by Oct 31, 2015.

Learn More

Get inspired, learn about our products, and gain helpful tips for your next project.

Top Viewed Buying Guides
Kitchen Countertops

A new countertop instantly updates the look  of your kitchen and adds  value to your home. Every kitchen countertop  professionally installed  by The Home Depot is beautifully designed to suit your  lifestyle and  budget. Leave it to our experts to help you choose and install  this  tasteful addition to your kitchen, so all you have to do is enjoy it.

Learn More

Interior Lighting

Interior lighting  has a significant impact on both the aesthetic and  functional elements of your  living space. Lighting sets the tone of a  room with an artistic, sculptural  presence -- based on the design and  finish of the fixtures you choose.

Learn More

Hardwood Flooring

Hardwood floors provide an ideal backdrop for almost any decorating  style, and are renowned for their warmth and elegance. In fact, wood  floors can outlast the home they're in and increase their beauty with  age. If you're looking for flooring with durability and timeless charm,  then hardwood could be your best choice.

Learn More

Check out all of our current promotions and shop incredible products for less.

Visit our Ideas & How-To for design inspiration, buying tips, projects, videos, and more.

Our Popular DIY Categories

The Home Depot offers free workshops for do-it-yourselfers of all ages and experience levels.

Installation Services

Find Out What Our Services Are

Learn More

Tool & Vehicle Rental

Tool & Vehicle Rental

Learn More

Credit Services

The Home Depot Credit Card

Learn More

Check Order Status
Check the status of your order using the details from your order receipt.

Cart Summary View Cart

Estimated Shipping $0.00
In-Store Pick Up $0.00
Estimated Taxes $0.00
Total Saving $0.00
Total $0.00

My Cart

No.


Isulation: A Smart, Behind-the-Scenes Investment

If you live in a home that’s more than a few years old, it’s probably worth your time to figure out if it’s properly insulated. With the right insulation, you can create a more comfortable, consistent indoor climate and significantly improve your home’s energy efficiency.

How to Select Insulation

1. Determine where you need to add insulation. The most effective places to add it to older homes are usually attics, basements and crawl spaces.

2. Determine how much additional insulation R-value you need.

3. Determine the type of insulation you need.

4. Calculate the quantity of insulation you should buy.

5. Choose whether you want to undergo a DIY insulation project or
get insulation professionally installed.

What is Insulation R-Value?

R-value measures how well certain building insulation materials, such as foam insulation, can resist heat. The higher the R-value, the greater the performance of the insulation. Keep in mind that if insulation is compressed, the R-value will decrease.

InsulationTypes and Forms

The most common types of insulation are fiberglass, cellulose and foam. These types of insulation are available in a number of different forms depending on the location and R-value you intend to add.

Blown-In/Loose Fill

Blown-in or loose fill insulation is usually made of fiberglass or cellulose (recycled paper fibre). It’s blown or sprayed into place with a machine and is ideal for use in hard-to-reach areas, such as attics. It can also be used to fill wall cavities or to top up existing insulation.

If installing blown-in insulation yourself, you can rent a blowing machine from a Home Depot Tool Rental Centre.


Batts are pre-cut sections of fiberglass or rock wool insulation that are designed for easy handling and use between framing, such as studs and joists. They can be used in floors, walls, attics and ceilings.

Foam Board

Foam board insulation, or rigid panels of insulation, can be used to insulate almost any part of your home, from the roof to the foundation. Polystyrene and polyurethane are the most common materials used in making foam board. Foam board insulation sheathing reduces heat conduction through structural elements like wood and steel studs.

Spray Foam

Latex or polyurethane spray foam insulation can be used to fill small gaps and cracks and is ideal for sealing around doors, windows and vents. It sets quickly, and can be trimmed, painted or stained. Special equipment may be needed to apply foam to larger areas.

Vapour Barriers

Vapour barriers help control the amount of moisture that passes through insulation and are commonly used when framing the exterior walls of a house. If moisture from either direction is allowed to build up within the stud or cavity walls, the heat-conducting moisture will cause the insulation to lose its R-value and allow mould and rot to set in over time.

Radiant Barriers

Radiant barriers deflect radiant heat, which can pass through other types of insulation to further increase your home’s energy efficiency.

Calculating the Costs of Insulation

Step 1: Determine if your Home is Already Insulated

If you have insulation, find out the type and compare it to industry standards for R-value. Remember: The higher the R-value, the more effective the insulation.

Step 2: Calculate Any Additional Insulation Needs

If, for example, industry standard is R-50 and your depth is less than this, subtract the R-value depth you have from 50 to determine the amount needed to top up.

Step 3: Measure the Area Needing Insulation

Measure the length of space needing insulation. Batts of insulation generally come in 16- or 24-inch widths to fit the spaces between wall and attic framing.

Step 4: Determine the Type of Insulation to Use

Decide what type of insulation you want to use. Manufacturers cut batts into 4- foot lengths. Once you determine which product to use, divide your total from Step 3 by the square footage per bag. Find the cost for insulation and multiply one unit by the total you need to complete the job.

For more information on estimates and pricing please refer to the online Insulation Calculator. Existing structures may require more insulation than new constructions. Calculations are based on the heat source of your home, the location, and the size and square footage of the area to be insulated.

Professional Installation

Other Areas to Insulate

Window Insulation

Another way to control heat loss is by improving the quality of your windows. Low emissivity (or Low-E) windows do not allow as much heat to pass through, keeping your house cooler when it’s hot and warmer when it’s cold. Shrink film and weatherstripping are low-cost alternatives.

Hot Water Heater Insulation

Insulate water heaters to prevent costly energy loss. Look for insulating pre-cut jackets or blankets with an insulating value of at least R-8. Adding insulation to your water heater can reduce standby heat losses and save you water heating costs.

Hot Water Pipe Insulation

Wrap pipes with tubular insulation to prevent freezing and help keep water hot. Use quality pipe insulation wrap, or neatly tape strips of fiberglass insulation around the pipes. Insulating your hot water pipes reduces heat loss and can raise water temperature, allowing you to use a lower temperature setting.

Vent Duct Insulation

Insulated heating and air conditioning ducts operate more efficiently and vibrate less, reducing noise. Properly sealing air leaks using metal or sealant tape and insulating air ducts located in unconditioned spaces such as attics, crawl spaces, garages, or unfinished basements can also help improve your home’s energy efficiency.

Diy Installation Tips and Tools

Before You Insulate 
First, make sure that your house is properly ventilated. Adequate ventilation is necessary to prevent too much heat and condensation from building up, as well as to provide fresh air. Next, plug leaks to prevent air from getting in and out in areas around windows and doors. Always fix leaks before installing insulation, as they may be difficult to find after the job is finished.

Safety Tips
Working with insulation can cause itching and skin irritation, so make sure you take proper safety precautions:

  • Wear long sleeves and pants, work gloves, safety glasses, and a dust mask or respirator to avoid irritating your skin or breathing in harmful substances.
  • Vacuum your clothing immediately after to help reduce the chances of skin irritation.

The basic tools needed for an insulation project are: a tape measure, utility knife, straight edge, lightweight stapler, or hammer tacker to secure insulation in place, and a putty knife. Additional materials may include a drywall compound and expanding foam sealer.

It’s also a great idea to bring a portable light, especially when working in attics and crawl spaces, plywood to stand on, a rake for insulation adjustment, and insulation supports. All these tools and materials will come in handy during your project