How To Insulate A Pole Barn Ceiling

How To Insulate Pole Barn Ceiling

Like any other structure, it is important to insulate pole barns to enhance energy efficiency. You can do so easily as a DIY project using either rigid foam or fiberglass. Below are installation steps for each material and a comparison of their pros and cons.

When learning how to insulate a pole barn ceiling, you need to follow the appropriate steps. This includes gathering the materials you need for installation and then measuring, cutting, and installing the rigid foam insulation. When done, make sure to seal everything and cover the foam.

Read on for more detailed instructions on each step below.

How To Install Rigid Foam Insulation On Pole Barn Ceiling

Install Rigid Foam Insulation on Pole Barn Ceiling
Image Source: Andriy Blokhin


  • Styrofoam
  • 2-inch plastic cap nails
  • Hammer
  • Utility knife
  • Tape measure
  • Square
  • Pencil or felt-tip marker
  • Step ladder
  • Adhesive glue
  • OBS or plywood


1. Take Measurements

The most efficient way of installing rigid foam on pole barn ceilings is to install them between adjacent vertical joists and between the upper wall beam and the roof cap beam.

Accurately measure the width and length of each installation area. The Styrofoam sheets may have a perfect fit, or you might need to cut the sheet to custom fit the installation area.

2. Cut The Foam Insulation

When you need to cut the foam insulation, transfer the measurements onto the foam using a tape measure. Then use a square and a pencil or felt tip marker to mark the cutting lines on the foam sheet.

Make sure to transfer the installation dimensions onto the sheets as accurately as possible. It is best to cut the sheet bigger than the dimensions than smaller as you can always cut the excess parts.

3. Install The Foam Insulation

To install the pole barn insulation, place the rigid foam sheet, hammer, and nails within reach. Then, step onto a ladder, pick up the rigid foam sheet and fit it firmly inside the installation area.

Hammer nails into opposite edges across the horizontal edges. The nails should be long enough to go through the foam and into the joist for proper insulation installation. The cap prevents it from penetrating too deep into the foam sheet and causing damage.

4. Seal The Cracks And Gaps

Identify any cracks and gaps and apply spray foam insulation to ensure the insulation is completely airtight and there is no heat loss.

5. Cover The Foam Insulation With OSB Wood Or Plywood

Some state codes require you to cover your foam insulation sheet to prevent fire hazards. OSB wood and Plywood are the most commonly used materials for covering foam panels. Both enhance insulation and can be painted to suit your preferences.

Cut the plywood or OSB wood to similar dimensions as the foam sheets. Lay the panels on a flat surface with the bottom facing up. Apply adhesive to the wood. Use foam-to-wood adhesive as it adheres better and keeps a strong hold for longer. Stick the plywood or OBS wood firmly over the foam. You may then proceed to paint it if you wish.

How To Install Fiberglass Insulation On Pole Barn Ceiling

Fiberglass Insulation on Pole Barn Ceiling
Image Source: Serhii Krot


  • Fiberglass batt insulation
  • Staple gun
  • Utility knife
  • Strapping tape
  • Protective gear: Mask, goggles, and gloves
  • Stepladder


Step One: Wear Your Protective Gear

When performing any radiant barrier insulation, you should always wear the proper protective gear, including goggles and gloves.

Step Two: Measure The Insulation Area

The best way to install them is on the spaces between the joists. Note the dimensions for each installation area and 1-2 each to ensure a snug fit.

Step Three: Install The Fiberglass Batt Insulation

Using a utility knife, cut the fiberglass batt insulation to their respective dimensions. Step on the ladder and tuck them into the spaces between the joists.

Step Four: Secure The Installed Insulation With Strapping Tape

Hold one edge of the strapping tape and staple it to the furthest vertical joist. Extend it across the ceiling and staple it to the adjacent vertical joist. Repeat this at different points across the ceiling.

Fiberglass Insulation vs. Rigid Foam Insulation

Form board panels are rigid, durable, and offer optimal insulation. They are available in different sizes, thicknesses, and finishes to suit specific insulation needs. They are also water-resistant. They should perfectly fit the pole barn dimensions for optimal insulation efficiency. Make sure you seal the joints between panels to prevent airflow into the pole barn and heat loss.

On the downside, rigid foam insulation takes a long time to install, and you may require help. They are also more expensive than fiberglass insulation material. Depending on your local codes, you may be required to cover them up with OBS wood which increases the overall cost and complexity of the project.

Fiberglass is cheaper for pole barn insulation. It can be installed as a DIY project within a few hours. However, while it is effective at insulating, it does not keep away moisture or air, making it prone to mold and mildew growth. It is also prone to pest infestation. Fiberglass insulation also wears out faster than rigid foam insulation, necessitating replacement over time.


Both fiberglass batts and foam boards are effective at insulating pole barn ceilings. However, installing a rigid foam board is more complex than using fiberglass batts, but rigid foam boards are more durable. Choose the method that works best for you and follow the steps above to insulate your pole barn ceiling.