The first number is the width of each tooth.
3 8 u notch best for mosiac floors.
How to choose.
The most common type of trowel for floors is the u notched trowel.
Use this for 8 8 s and some of the 5 16 thick 12 12 builder grade tile.
Mosaic installations up to 2 inches can use a 1 8 inch notch as can wall tiles of up to 4 inches as a general rule.
3 4 x 9 16 u notch.
This may also be a good trowel size for thicker 5 16 mosaics.
1 what size notch trowel for a 12 12 porcelain tile floor.
A great trowel for installing small ceramic tile such as 4 25 x4 25 6 6 and 3 6 subway tile.
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Tile trowels come in many shapes and sizes generally starting out from a 3 16 v notch up to the 1 2 square notch finding the right trowel for the job is quite simple when you know that generally speaking the trowel size should match up to the tile size the smaller the tile the smaller the trowel.
As a general rule mosaic tiles up to 2 inches wide benefit the most from trowels with notches that are 1 8 to 1 4 inch in size.
Those are general guidelines and will work with most installations.
More tips for installing wood look tile flooring.
Smaller than 1 8 notch.
Square notch trowels often have three numbers indicating the size and spacing of the notches.
To install 12 x 12 and larger tiles with a medium bed mortar the ntca recommends a u notch trowel between 3 8 x 3 4 x 9 16 and 25 64 x 3 4 x 19 32.
While i occasionally use glues with some.
Larger 24 inch natural stone.
Four inch up to 8 inch tiles need a 1 4 to 3 16 inch notch trowel.
1 4 x 3 8 square notch.
For example a 1 4 x 3 8 x 1 4 inch trowel has 1 4 inch wide 1 4 inch deep teeth spaced every 3 8 inches.
The larger the tile the larger the trowel.
16 inch tiles need a 1 2 inch deep notch and anything over 24 inches should use a this thin set mortar is applied onto the wall or floor surface with a notched trowel according to tile type and size.
A trowel size smaller than a 1 8 square notch trowel is usually for glues.
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This can either be a literal u shaped notch or it all tile manufacturers offer a recommended trowel size.
What size notch trowel for a 12 12 porcelain tile floor.
It s rare that i use this trowel size.
Anything bigger than what s listed.
The second is the spacing between teeth.