Thread: Mounting Large Marri Desk to wall

My concern with these sorts of designs is what happens when someone sits on the desk but my guess is at 44 mm thick over just 2m in length you should be OK.

I'd like to see a photo of the desk once it is all done.

with a thickness of 44mm if you have a full length cleat along the back and side wall I highly doubt you'll get sagging.

Just remember to take into account wood movement and you should be fine.

Thanks for that. How much wood movement do you imagine? The boards run length wise - 4 boards joined in total. I haven't planned to use expansion washers to attach the cleat to the underside of the desk but will oversize them all the same. Where else do you predict movement to be an issue? Perhaps at the return. Is there a safe way to estimate how much I might need to allow for?

it depends on a number of factors such as humidity fluctuation in the room, quality of boards to begin with ie quarter sawn won't move much, orientation of boards and moisture content to begin with.

Yes it'll be a good idea to oversize any anchor points to the wall to allow for any movement.

The return will probably be subjected to the most amount of movement, as you've effectively got a breadboard end, so either secure the middle board only and leave the rest floating. The return only really needs to support the far end so theoretically you can leave it floating.

The back wall you can leave a 2-3mm gap to accomodate any movement. You'll may need to anyway depending on how square your walls are, in my experience its best to assume the walls are not square and build accordingly.