Thinset Mortar

Category: infrastructure

An adhesive cement blend made of sand, cement, and water-retaining agents used to bond tile to a backing substrate.

Thinset is mixed to a smooth, pasty consistency and combed onto surfaces using a notched trowel. Modified thinset blends incorporate liquid polymer additives to expand bond strength and flexibility, preventing heavy tile from cracking when the subfloor naturally flexes.

Common Examples

• We selected a polymer-modified thinset mortar to ensure the large-format floor tiles adhere permanently to the concrete slab.
• Applying too much thinset mortar beneath a tile sheet causes the wet cement to ooze out through the open grout line channels.