Tag: attic insulation

How To Properly Install Radiant Barrier Foil Insulation

A radiant barrier is a cost-effective way to reduce the heat that enters your home. It keeps your attic cooler in the summer and your home warmer in the winter.

Begin by stapling the radiant barrier to all new walls located in your attic space overlapping each run of insulation by 2″. Leave the area near the peak un-insulated for proper ventilation. Click here at https://www.ultimateradiantbarrier.com/ to learn more.

radiant barrier foil insulation


Adding radiant barrier insulation to your attic can significantly reduce cooling bills and improve indoor comfort. It also helps your HVAC system work more efficiently and extends the life of your equipment. A radiant barrier works by reflecting the sun’s heat before it gets into your home. It can be installed over existing insulation or with new insulation and attic ventilation. Regardless of which installation method you choose, it’s important to clear the attic space before beginning the project and remove any debris or other obstructions.

During the attic prep process, it’s recommended that you clear any obstructions such as vents, chimneys, or electrical wiring from your attic. This will help ensure that your installation project goes smoothly and prevents any unexpected issues down the road.

If you plan to use the standard staple-up method, it’s recommended that you rent a power stapler with an appropriate number of staples for your project. This will make the stapling process much easier and faster. It’s also recommended that you use a ladder with sturdy feet to ensure safety when working in the attic.

The stapling method is the most common method for installing a radiant barrier in an attic. It’s a great option for homeowners who want to save on installation costs and get the job done themselves. Begin by clearing the attic space and then measuring and cutting the radiant barrier material. Make sure to have enough materials for the entire attic, taking into consideration any obstacles that may be present such as vents or electrical wires.

When stapling the radiant barrier, it’s important to note that you should always staple with the foil side facing down. This will be the side that is visible when you are in your attic space looking up at the attic floor joists or plywood decking. Additionally, you’ll want to ensure that you are leaving adequate space along the ridge, at any hips or valleys, and around roof vents. The space left in these areas will allow for proper attic ventilation, which is essential to the performance of your radiant barrier system.


Radiant barriers can reduce the transfer of heat from the roof to the living spaces below. This can significantly lower energy bills and improve comfort in homes. They are especially effective in homes with air conditioning ducts located in the attic. They work best when combined with insulating material, such as batt or roll insulation. To effectively use radiant barrier foil insulation, it is important to know the proper installation process.

The first step in the installation process is to clear out the attic space. A ladder or a step stool helps get to the attic floor, but it is also recommended that you work with a helper. This makes the task go much faster and can prevent accidents from occurring. It is also a good idea to wear gloves, eye protection, and a dust mask during the process.

If you are working in a new construction home, the ideal time to install a radiant barrier is before the roof sheathing is placed. This allows the insulating material to be placed beneath the foil and maximizes efficiency.

When installing the radiant barrier, make sure to lay it on the shiny side facing down and away from the attic. The goal is to create an air gap between the foil and the attic floor insulation. For this reason, it is not recommended to staple the foil directly to the attic floor insulation or the rafters.

Once the insulating material is in place, it is important to overlap each row. This will prevent any gaps that could allow heat to pass through the radiant barrier. It is also important to avoid covering vents or electrical fixtures. Lastly, remember to leave a small area at the peak of the roof uncovered for proper ventilation.

The next step is to inspect the radiant barrier for areas that require additional reinforcement or repositioning. This is particularly important in corners and any areas that are prone to shifting. In addition, it is recommended to check the attic for any signs of sagging or loose sections. If you notice any areas that need additional reinforcement, consider using adhesive spray or double-sided tape to secure them in place.


Unlike traditional insulation that traps heat in the air, radiant barriers reflect it. This helps keep the attic cooler, and it also reduces your energy costs, especially in warmer climates.

A radiant barrier is made of foil or other reflective material that covers attic joists and the plywood sheathing in your attic floor. It can be installed in new homes or over existing insulation. It is usually placed over gable and ridge vents to avoid blocking them, and it can be combined with fiberglass batt or roll insulation.

While it’s possible to install radiant barriers yourself, it’s a job best left to pros to get the most from your investment. A pro will use a ladder to safely access the attic, and they will ensure that the attic’s ventilation is intact. They will also check for existing air leaks around can lights, attic doors, and ductwork. Because a radiant barrier is not a vapor or moisture barrier, it’s important to seal these air leaks before installing it over insulation.

Before installing the radiant barrier, a professional will measure the dimensions of the attic and attic floor to ensure that they have enough materials to cover the entire area. They will then cut the material to size, using a utility knife or scissors. A tape measure and a flashlight are also essential tools for this step. A staple gun will be used if the stapling method is chosen, and an adhesive or spray applicator is required for the spray-on method.

When it’s time to do the actual installation, a pro will drape the rolled radiant barrier with its foil side down over the attic joists and plywood decking. They will then use a stick (a 1/4″ furring strip with a nail in the end works well) to help push the foil into the tight spaces of your attic. Once they are finished, they will staple the barrier to all known walls located in the attic space overlapping each piece by 2″ inches.

Once the barrier is installed, it’s important to conduct periodic inspections. A professional will look for any areas that need to be sealed or patched and can do this quickly and efficiently with the right tools. In addition, they will assess the overall condition of the radiant barrier to ensure that it’s working properly and efficiently.


When a home is properly insulated, it will keep the inside cooler and reduce cooling costs. One effective insulation type is radiant barrier foil, which reflects heat instead of absorbing it like traditional foam or batt insulation. Generally installed in an attic, radiant barrier foil works best when it is paired with insulating material that slows convection and condensation.

A radiant barrier can be a great option in new construction, where installers typically drape a rolled-foil radiant barrier between the roof rafters before sheathing it. However, it can also be installed in an existing attic by stapling the material to the attic floor or rafters. It is important to note that the reflective side of the barrier must face up to be effective.

It is recommended that homeowners use a professional to install the foil, as this is a dangerous job for those who are not used to working in an attic space. It is especially important to work with a partner and clear the attic space before beginning the project. In addition, a homeowner should make sure that their staple gun is compatible with the thickness of the radiant barrier material to avoid jamming or incomplete penetration. It is also recommended that workers wear protective gloves and eyewear. Additionally, it is important to be careful around bare electrical wiring in the attic.

While some people fear that the radiant barrier will cause their attic to overheat, this is not a common issue. Radiant barriers help to prevent overheating because they reflect the sun’s heat rather than absorbing it. It is also important to understand that a radiant barrier will not improve an attic’s R-value, as this rating system only applies to materials that slow conductive heat.

A radiant barrier can be a great investment for your home, especially in hot climates. It can save you up to $120 a year in energy costs, and it should be properly maintained and inspected to ensure that it is working as designed. If you’re ready to start saving on your energy costs with a radiant barrier, enter your zip code above to be matched with top-rated pros near you!