Installing PVC base moulding can be a straightforward DIY project, offering durability and resistance to moisture.
Understanding PVC Base Moulding Installation
PVC moulding is known for its ease of use, as it cuts just like wood and it also copes just like wood, making common trimming techniques applicable. The primary methods for securing PVC base moulding are gluing, nailing, or combining both for maximum hold.
Installation Methods for PVC Base Moulding
You have flexibility when installing PVC base moulding depending on your needs and the substrate you are attaching it to. PVC mouldings can be glued, nailed or both.
Method 1: Gluing PVC Base Moulding
Gluing is an excellent option, especially on substrates where nails might be difficult to use or if you want a cleaner look with minimal nail holes.
- Preparation: Ensure the wall surface is clean and dry. Cut your moulding pieces to length and cope inside corners if necessary (as it copes just like wood).
- Applying Adhesive: Apply adhesive to the back of the moulding piece. The reference specifies: Apply a continuous ¼” bead of Heavy Duty construction adhesive such as Liquid Nails the back edges of the base moulding. Focus the bead along the top and bottom edges where they will meet the wall.
- Placement: Carefully position the moulding piece against the wall.
- Securing: Press the moulding firmly into place along the entire length to ensure good contact with the adhesive. You may need to use temporary fasteners or props to hold it until the adhesive cures, especially on longer runs or slightly uneven walls.
- Seams: When joining pieces, especially at seams, wipe away any excess glue immediately before it can harden. This prevents unsightly dried adhesive that is difficult to remove later.
Method 2: Nailing PVC Base Moulding
Nailing is a traditional and effective method, often used with a finish nailer for speed and precision.
- Preparation: Cut and cope your moulding pieces.
- Placement: Position the moulding piece against the wall.
- Nailing: Drive finish nails through the moulding and into the wall studs or base plate. Aim for two nails at each stud location (typically 16 inches apart), one near the top edge and one near the bottom edge of the moulding. Use a nail punch to set the nail heads slightly below the surface.
Method 3: Combining Gluing and Nailing
For maximum security and durability, especially in high-traffic areas or on potentially uneven walls, using both adhesive and nails is the recommended approach.
- Follow the steps for applying glue (specifically, applying a continuous ¼” bead of Heavy Duty construction adhesive such as Liquid Nails the back edges of the base moulding).
- While the adhesive is wet, nail the moulding to the wall studs as described in the nailing method. The nails hold the moulding securely while the adhesive cures, providing a long-lasting bond that helps prevent gaps.
Cutting and Coping PVC Moulding
Just like wood, PVC moulding can be easily cut using standard woodworking saws, such as a miter saw for straight and outside corner cuts. For inside corners, it also copes just like wood. Coping involves using a coping saw to cut along the profile of one piece of moulding so it fits snugly against the face of the adjoining piece at an inside corner.
Essential Tools for Installation
To install PVC base moulding effectively, you will typically need:
- Measuring tape
- Miter saw (for straight cuts and outside corners)
- Coping saw (for inside corners, as it copes like wood)
- Caulk gun (for applying construction adhesive like Liquid Nails)
- Heavy Duty construction adhesive (e.g., Liquid Nails, as referenced)
- Finish nail gun and compressor, or hammer and finish nails
- Nail punch (if using a hammer)
- Level
- Safety glasses
- Utility knife (for trimming excess glue)
- Rag (for wiping excess glue)
- Caulk (for filling gaps and nail holes)
Tips for a Smooth Installation
- Always measure twice and cut once.
- Start installation on your longest walls to minimize waste.
- Practice coping on scrap pieces if you are new to the technique.
- Use a quality construction adhesive for a strong bond (like the referenced Heavy Duty construction adhesive such as Liquid Nails).
- Remember to wipe away any excess glue immediately from seams before it can harden.
- Fill nail holes and any gaps between the moulding and the wall or floor with paintable caulk for a professional finish.
