How To .... Join Coroplast® Pieces and Cover the Ends

Every single project involves attaching pieces together and covering the exposed holes on the ends of the Coroplast. Here are the basics of I do every time I take on a DYI project.

1. Cut a slot in one row of the Coroplast by running the knife down each side, along the rib.
2. Save piece you just cut out. We can use it later to cover the end.
3. Once you have a slot, add glue and slide in the piece you want to attach. This process makes a very strong dado joint.

1. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 2. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 3. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca

4. Skin one row on the end of your project piece. Make sure there is a plastic overhang.
5. Add glue and add the piece you want to attach. This process makes a very miter joint. It isn't quite a strong as a dado, but it is close.
6. The simplest joint is a butt joint. Put some glue down where you want the piece attached and press it in place. This is a weak joint that tends to break if pressure is applied. I use this type of joint primarily to add spacers or 'decoration' to the project. *Important* to leave the excess that squeezes out the sides. This excess adds lateral stability and increase the entire glued surface area.

4. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 5. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 6. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca

7. An easy way to cover the end that looks good is to use a strip, Like the one we saved in #2. Add a bead of glue along the edge of the sheet and attach the strip. Use the knife to make small adjustments in position and to hold the strip in place. It really hurts if you use your fingers.
8. Adding a cap to the end can really look good on some projects. Do what you did in #1 three times, side by side. Now cut away two of the rows.
9. Cut out one row. When you are done you will have one row that is solid on one side and hollow on the other.

7. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 8. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 9. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca

10. Add a bead of glue along the edge of the sheet and attach the hollowed out row from #9.
11. Filling the holes with glue is the fastest and easiest way to hide the end. Just keep in mind the excess glue required can distort the shape of the plastic as it dries. Once everything is dry a quick trim with the knife makes it look good.
12. Here are the finished examples. We have miter, dado, and butt joints plus a strip, cap and glue to cover the end.

10. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 11. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca 12. How to join and cover ends of Coroplast projects - Coroplast DIY - CoroplastCreations.com - photos by: HalifaxSportsPhotos.ca
Please check out our other sites - HalifaxSportsPhotos.caTippinators.comCoroplastCreations.com
Let me know if you have any questions
bjohnston@halifaxsportsphotos.ca
Photos courtesy of 
HalifaxSportsPhotos.ca

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