Manufacturers recommend pre-wetting of cementitious substrates (concrete, screeds, plasters) before applying cementitious mortar over-lays eg grouts, waterproofing slurries, etc. There is a good reason for this and it is explained here. …

Tile grout used in most construction is typically cement-based.  Proprietary Cementitious grout are made from a blend of cement, polymer, additive, pigment, fine-graded aggregates and mixed with water or fortified with a liquid latex additive (in…

Have you ever tried patching a hole in the wall and, no matter what you or your hired tradesman did, you could never get the repair mortar to finish flush with the surface? Or to dry without unsightly crack lines? If you have, you can probably blame…

Most concrete structures have joints as part of their design. Joints are necessary to accommodate movements in the concrete units caused by thermal contractions and expansions as well as exposure to loading conditions. Purpose and Properties of…

For waterproofing applications… why are angle fillets necessary for internal corners? why must external corners be rounded? Stresses arising from movements in the supporting substrate are evenly distributed over a waterproofing membrane which…