How to install Architrave Corner Blocks without mitres

Installing architrave corner blocks or rosettes is a great alternative to mitering the corner joints, or if you simply want something different to everyone else.

architrave corner blocks

These pictures are what I did when installing my kitchen architraves, using the same corner blocks I'd used next to my cooker (in the picture at the bottom of this page).

Because you don't have to miter the corners, they're quick and easy to install without any expensive miter saws. 

You should buy some that are either the same size as or up to 5mm wider than your casing/architrave timber.

How to install corner blocks

These steps are followed on from the architrave page after the margins have been marked onto the lining;

  • Step 1:

Hold a length of casing on to the leg of the lining up to the margin and mark a pencil line on both sides, repeat with the head. This will leave a set of lines in the corner the same as when you play noughts and crosses!

  • Step 2:

Center the corner block over the lines and draw round it.

  • Step 3:

Cut architraves up to the pencil lines drawn around the block and glue/nail the lot in place! (The easiest way to nail them is fix the bottom halves of the legs in place first then you can rest the blocks on top while you adjust the head left or right to center it all). 

I put Gripfill on the back and p.v.a. wood adhesive where the architrave butts into them, and nailed using my Dewalt finish nailer.

Architrave corner blocks are not just limited to the corners of architraves either. When I built my kitchen, study and vanity units (below) I used them as a feature. You can use them for loads of other things too like fireplace surrounds or even as part of the brackets holding up shelves for example.

architrave corner blocksarchitrave corner blocks

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