Whats the difference between thin set mortar and grout?

Question

Are they interchangeable? They seem like the same thing?

Answer 1

Thin set mortar is the glue that binds the tile to the subsurface.  Grout is the material that is placed between tile once the thin set has hardened.  They are not the same thing and do not perform the same function.

Grout is available in two types, sanded and non-sanded.  Non-sanded grout is used when the joints between tile is 1/8" or less.  Sanded grout is for wider joints.

Answer 2

Mortar is spread thin under the tiles and holds them to the floor. After it is "cured", then you apply the grout in between the tiles to give the floor a smooth even surface.

Answer 3

The thin set is usually the material used to stick the tiles to the floor. It can be a mortar or a mastic material. It is composed to provide good adhesion to stick the tiles to the floor or wall. Thin set usually doesn't come in a lot of different colors since it is assumed that it will be covered up. It is not typical anymore to use grout to both set and grout the tiles.

Answer 4

The thin set mortar binds the tiles to the wall or floor while the grout fills the blank spaces between tiles.

Answer 5

thin set mortar is just that, mortar....portland cement, flyash, some have the sand included......grout has no portland and is not a bonding agent.....

lic. gen. contracor

Answer 6

yeah they really are the same thing. But thinset is grey coloured and grout comes in other different colors.