Portland cement S-780

for floorwall

S-780 Mortar Bed Mix is a Portland Cement based mortar for thick setting “mortar/mud” beds under ceramic or Quarry Tiles over concrete. Summitville S-780 Mortar bed mix is a pre-packaged mortar to eliminate dry mix ratio guesswork on the job site. S-780 can be mixed with clean potable water or with Summitville S-800 Thin Set/Mortar Bed Latex for improved mortar bed flexibility. S-780 must be applied to cured concrete or over wood floors (interior only) built to ANSI A 108 and the Tile Council of North America Handbook for Ceramic Tile Installation methods. S-780 may be used with radiant heat pipe installations. Radiant heat installations must be lowered to a maximum of 75ºF before installation of mortar bed and must remain at or below 75ºF until the tile installation is complete and has been given sufficient time to cure. Installations requiring reinforcement must have mesh reinforcement in the center of the bed. Reinforcement must not be in direct contact with vertical surfaces, perimeters and/or restraining protrusions.