Fracture Shield

Product Description

Siena Fracture Shield is a ready to use anti-fracture, crack isolation and water resistant membrane, manufactured with a mixture of latex polymers and other proprietary additives to produce a high quality elastomeric barrier that protects tile floors from cracks due to minor surface movement. Fracture Shield is easily applied with a roller, trowel, paint brush or a sprayer, and appears glossy white when wet and becomes a flat white upon drying. Fracture Shield exceeds the requirements for ANSI A118.12 for crack isolation and can be used in residential, commercial, interior and exterior tile and stone applications.


Siena Fracture Shield is used on recommended substrates as an anti-fracture and crack isolation membrane used to prevent shrinkage or non-structural cracks up to 1/8” transmitting from the substrate through the finished goods. Fracture Shield must not be left uncovered or exposed. A highly polymer modified mortar (such as: M200, M225, M375, M400) must be used over Fracture Shield meeting ANSI A118.11 or A118.15 for tile or stone installation.

Product Data Sheet | SDS