Bostik D-5 Mortar

Surface Preparation

Surface must be clean, dry and smooth

free of voids, projections, loose materials, oil, grease, sealers, curing compounds, waxes and all other surface contaminants that may inhibit proper bond.

Application

Apply a thin coat of DURABOND D-5 Premium Thin-Set Mortar with the flat edge of trowel to achieve a good mechanical bond to the substrate. Comb additional mortar with the appropriate size notched trowel. If any evidence of skinning or setting occurs, re-comb mortar with notched trowel. Apply mortar to an area no greater than can be tiled in 20 to 30 minutes. Apply using a twisting motion into a fresh bed of mortar to ensure maximum contact and bond. Periodically check back of tile to ensure proper transfer (interior applications-minimum 80% coverage

exterior, wet, or plywood applications-minimum 95% coverage). A finished mortar bed thickness of 3/32" to 1/8" is required.

See Vendor technical data sheet for more information.

Mixing

Using a slow speed mixer (<150 rpm), mix 5 to 6 quarts of clean potable water, or 6 to 7 quarts of DURABOND D-L16 High Strength or D-L36 Flexible Mortar Additive, to 50 pounds of DURABOND D-5 Premium Thin-Set Mortar. Mix to creamy consistency. Allow mixture to stand 15 minutes, and re-mix prior to application. Do not re-temper by adding more liquid.

For installations over plywood, sheet vinyl/VCT, approved membranes, exterior applications, or when setting porcelain tile, DURABOND D-5 Premium Thin-Set Mortar must be mixed with DURABOND D-L16 High Strength or DURABOND D-L36 Flexible Mortar Additive.

Curing

Keep all foot traffic off the installation until tile is firmly set (approximately 12 hours). Set times are dependent upon temperature and humidity.

Clean-Up

Clean all tools and equipment with soap and water. Do not allow material to dry on surface of tile.