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castleguard insulation
Above grade and below, inside and out, Dow's extensive portfolio of insulation solutions help save energy and manage moisture in a broad array of applications and climate conditions.
Johns Manville is dedicated to the health, comfort and quality of the homes you create. Our complete line of Formaldehyde-free™ fiberglass insulation promotes better indoor air quality and greater energy efficiency.
Lomanco provides a complete line of quality products meeting your ventilation requirements while protecting other costly building components.
From the attic overhead to the basement below, and the walls in between, there’s an Owens Corning energy-saving PINK insulation solution for every part of your home. We’ll help you plan your project and choose the insulation products you’ll need. Best of all, you can do most installations yourself, in just a weekend!


is a batt insulation designed specifically for interior wall and floor/ceilingapplications. This stone wool insulation is made from natural stone and recycled content. It’s a greenproduct that provides superior sound absorbency andfire protection for over all comfort and safety.

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Instructions where to insulate

Where to Insulate

Checking your current attic insulation depth is a good first step. You need up to 19 inches (or R-50). If you don't have enough, it may be an indication that your home is underinsulated and may not be properly sealed. Adding insulation to underinsulated areas and sealing air leaks are the fastest, easiest ways to help you lower your energy bill.

Locating Underinsulated Areas

There are several key areas that are often uninsulated or underinsulated. These areas allow cold or unconditioned air to pass through, maintaining a comfortable temperature requires more energy, creating higher bills.

Check these areas for the opportunity to add insulation:


- Slide a yardstick or tape measure into the existing insulation. If it is not up to 19 inches deep, add more.

- Blown in Fiberglass wool is the best. Fills all voids and cracks for a continous layer.


- check rim joists and basement walls.


- check between floor joists if vented, and check perimeter walls if unvented.

- ground should be covered with a 6 mil polyethylene sheet.

Exterior walls and floors

- turn off the electricity first, then check by removing an electrical outlet cover.


- check garage walls and ceilings that are adjacent to conditioned spaces in the house.

Knee walls

- check behind kneewalls, which are walls between living spaces and the garage or attic.

How to Avoid the Chimney Effect

In cold weather, warm air is continually rising. Leaks into the attic allow the expensive, heated air to

escape into the attic, while at the same time drawing in cold air to displace it from the basement or other

exterior leaks. This continuous air movement makes the home feel drafty and raises energy bills. By

sealing attic air leaks, you plug the escape route of rising air and effectively stop the chimney effect.

Check around your attic for these common sources of attic air leaks:

Between floor joists

Behind knee walls

Attic hatch

Wiring holes

Plumbing vents

Open soffit (the box that hides recessed lights and the finished space above cabinets)

Recessed lights

Furnace flue

Insulation R-Value

R-value is the measure of a material's ability to resist heat conduction. The greater the material's R-value,

the better it performs as an insulator. All values assigned to insulation are based on specific thicknesses

and are usually noted on the packaging. Compressing or otherwise reducing the thickness of insulation

reduces its ability to resist conduction. Find your region on the map and use the chart to determine the rvalue

you need.