I’m about to install quite a bit of cedar fascia board and am unsure what would be the best corner joint detail. This is for both inside and outside corners. I’m planning on using 1×8 cedar. I think that a miter joint will just open up no matter what. A butt joint won’t look right and might also open up.

Watch our video to see how to install corners and joint trims on PVC Fascia Boards, allowing the system to expand and contract. You should always leave an expansion gap of 5mm per fascia board and then cover the gap with a joint trim or corner trim. Find out how to do it here.

Fascia Joints That Won’t Open Builder Mike Maines offers tips for using the right fasteners and adhesive to keep outside corners tight on exterior trim.

Used to fix the corner of a conservatory. Good quality and good value for money. Easy to cut to the right length and looks great in place.

Toughcore External Corner is a fascia corner joint made for creating a neat finish around external corners. Use our internal fascia corner if you are running your fascia around an internal corner. Fascia corners ensure it is possible to join two fascia boards around a corner and conceal the join line.