Fitting plastic angle trim typically involves cutting it to size and then fixing it in place using one of three primary methods: self-adhesive tape, glue, or mechanical fixings like screws or rivets. The best method depends on the specific application, the type of plastic, and the surface to which you're attaching the trim.
Here's a breakdown of the process:
1. Preparation:
- Measure and Cut: Accurately measure the area where the plastic angle trim will be installed. Use a fine-toothed saw (like a miter saw or a hand saw with a miter box) or a sharp utility knife with multiple passes to cut the trim to the required length and angle. For cleaner cuts on brittle plastics, score the cutting line deeply first.
- Clean Surfaces: Thoroughly clean both the surface where the trim will be attached and the back of the plastic trim itself. Remove any dust, dirt, grease, or old adhesive. Isopropyl alcohol often works well for cleaning.
- Dry Fit: Before applying any adhesive or fixings, dry-fit the trim to ensure it fits correctly and that you are happy with the positioning.
2. Fixing Methods:
- Self-Adhesive Tape:
- Best For: Lightweight applications, temporary fixes, or when you want to avoid visible fixings.
- Application: Remove the protective backing from the self-adhesive tape on the back of the trim. Carefully align the trim and press it firmly against the surface. Apply even pressure along the entire length to ensure a strong bond.
- Considerations: Ensure the surface is very clean and dry for optimal adhesion. The strength of self-adhesive tape can vary, so choose a high-quality tape designed for the specific materials you're working with. It may not be suitable for high-stress areas or heavy items.
- Glue/Adhesive:
- Best For: A stronger and more permanent bond than tape.
- Application: Apply a suitable adhesive to the back of the trim. The correct adhesive will depend on the type of plastic. Construction adhesives, epoxy resins, or specialized plastic adhesives are often used. Follow the manufacturer's instructions for the adhesive. Press the trim firmly against the surface and hold it in place (or use clamps) until the adhesive cures.
- Considerations: Choose an adhesive compatible with both the plastic trim and the surface you are attaching it to. Some adhesives may dissolve or weaken certain plastics. Provide adequate ventilation when working with adhesives.
- Mechanical Fixings (Screws, Rivets):
- Best For: Applications requiring a very strong and durable bond, or when the trim will be subjected to significant stress.
- Application: Pre-drill pilot holes through the trim and into the surface behind it. Use screws or rivets to secure the trim in place.
- Considerations: Choose screws or rivets that are appropriate for the thickness of the trim and the material of the surface. Be careful not to overtighten the fixings, as this can damage the plastic. Countersink the screws or rivets if you want a flush finish. If using rivets, choose the correct length for the materials being joined.
3. Finishing:
- Clean Up: Remove any excess adhesive or sealant with a clean cloth and appropriate solvent (if recommended by the adhesive manufacturer).
- Seal Edges (Optional): If necessary, seal the edges of the trim with caulk or sealant to prevent moisture from entering and to create a neat finish.
By following these steps, you can successfully fit plastic angle trim for a variety of applications.
