How to Insulate Trailer Skirting

- Rigid Foam Board: Offers excellent thermal resistance and is easy to install. Available in plywood, extruded or EPS foam.

- Fiberglass Batts: Flexible, easy to cut and install, but less effective at insulating than rigid foam.

- Spray Foam: Expands to fill every nook, providing superior insulation. Best installed by professionals.

2. Prepare the Skirting:

- Remove any existing skirting, if present.

- Inspect the trailer's undercarriage for damage or gaps. Repair any issues before insulating.

3. Install Furring Strips:

- Attach horizontal furring strips to the trailer's frame using screws. The strips create an air gap for better ventilation and prevent moisture buildup.

4. Install Insulation:

- Cut insulation to the size of each section between furring strips. Use a utility knife for rigid foam and a saw for fiberglass batts.

- For rigid foam, apply construction adhesive to the back and press firmly against the furring strips.

- For fiberglass batts, stuff them between the furring strips, ensuring a snug fit.

- If using spray foam, follow the manufacturer's instructions for proper installation.

5. Seal the Insulation:

- Apply a layer of sealant around the edges of the insulation and any gaps. This prevents moisture from seeping in and compromising the insulation.

6. Reinstall the Skirting:

- Reattach the skirting or install new skirting over the insulation.

- Ensure that the skirting is securely attached and there are no gaps where cold air can enter.