. Chat Online Masonry and Cement Products Buying GuideLowe s Feb 00 0000 · Material Characteristics Uses Mortar Mix A blend of Type N masonry cement and graded sand Good adhesive properties and workability Type N Mortar Good choice for laying brick and block grouting stone or brick pavers and repairing mortar joints Use for above-grade applications Blended Mason Mix A contractor-grade blend of Type S masonry cement and graded sand Chat Online Heat Stop PremixedRefactory Mortar and Masonry Supplies HEAT STOP is a premixed and ready to use refractory mortar. It was developed for installation of firebrick in masonry fireplace installations. It also has many other uses such as in chimneys boilers furnaces kilns and etc. This refractory mortar is gray in color Chat Online 