Expansion Joints when doing 33 offset wood planks [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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11-26-2020, 02:51 AM
Hi Everyone,

Getting ready to lay wood look porcelain tiles in 33 offset. It came to my attention that I need to account for expansion.

I have accounted for the expansion between the wall and tiles (perimeter joints). Do I also need field expansion joints ?

My room is 20 x 30 ft.

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Tiger Mountain Tile Inc
11-26-2020, 09:11 AM
You're supposed to have movement joints every 20-25 ft in the field. So it'd be nice to split that 30 ft dimension into two halves.

A movement joint is a grout joint that's filled with silicone rather than grout, FYI. You should fill it with backer rod first then 100% silicone that is color matched to your grout

Tool Guy - Kg
11-26-2020, 11:02 AM
Welcome to the forum, Mike. :wave:

...and If the floor is exposed to direct sunlight, the requirement for closer spacing of those joints comes into play due to greater thermal expansion/contraction. Is the floor exposed to direct sunlight?