Mastic Vs Thinset: What’s the Difference

If you’re new to installing tile, you’re probably unaware of the fact that there are different types of tile adhesives which better suit specific purposes.

The most commonly used adhesives types for tiling purposes include mastic and thinset. They’re both useful in different ways, but also have their limitations.

So, in the case of mastic vs thinset, what’s the winner?

Let’s compare these two adhesives, shall we?

Mastic vs Thinset


Mastic is a tile adhesive which is best used for relatively dry areas. These areas include walls, kitchen backsplashes, and residential floors, to name a few.


1. Isn’t Prone to Drooping – Unlike thinset, mastic is capable of drying and establishing itself very quickly. This is good because it prevents tiles from taking on a drooping and slipping quality.

2. Relatively Inexpensive – When compared with thinset, tile mastic is a bit less expensive. Of course, it’s also less durable, prone to rotting if it makes contact with moisture. This means that you’ll have to touch it up and reapply it more often, resulting in potentially higher costs in the long run.


1. Not Designed to Resist Moisture – Because tile mastic is an organic material, it is prone to rotting after making contact with moisture. Therefore, it can not be used as an adhesive in generally wet areas.

2. Vulnerable to Residue – As we’ve stated, mastic is an organic substance. Because of this, it’s sought after by bacteria. Over time, more and more bacteria will make their way to mastic, creating an unsightly residue that is not easy to get rid of.


Thinset is a tile adhesive which is best used in areas that are prone to moisture exposure. These areas include everywhere from shower walls, to tubs, to bathroom floors, to name just a few.


1. Resistant to Moisture – Thinset is manufactured with synthetic compounds which are designed to stave off all forms of moisture. Therefore, thinset is not prone to rotting after making contact with moisture.

2. Offers Plenty of Setting Time – One of the greatest things about thinset is that it doesn’t dry as soon as you lay it down. Unlike with mastic, it takes quite a while to set. Because of this, it affords you plenty of time to lay your tile just the way you like.

3. Not Prone to Residue – Unlike mastic, thinset is not an entirely organic substance. It’s made with a number of synthetic materials which bacteria have no interest in. Because of this, it is less prone to a buildup of unsightly residue.


1. Prone to Drooping – Thinset, because it takes a reasonably long time to dry, can often result in slipping, uneven, and drooping tiles. You must take great care when installing it to ensure that it’s being applied correctly.

Mastic vs Thinset: What’s the Winner?

While both mastic and thinset can be useful, thinset wipes the floor with mastic overall. Not only is it resistant to moisture, but stronger, and more durable as well.

Are you looking to install new tiling in or around your property? Are you searching for a quality thinset at a fair price?

If so, we here at Buildmore Materials have you covered. We offer thinset which installs quickly, which possesses terrific flexibility, and which is completely resistant to moisture.

Buy yours today!

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