How to Seal Porous Surfaces
$5.00
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Some surfaces require sealing before we begin to mosaic. Otherwise: 1) adhesion is degraded which causes tiles to pop off; 2) the backer swells, shrinks and warps, and; 3) moisture in the backer promote rot. This video shows the best practice in sealing porous surfaces. (3 min. 07 sec.) No refunds for digital products like videos.
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