Building sand has finer, more rounded particles that give bricklaying mortar workability. Sharp sand is coarser and more angular, making it better for many screeds, concrete mixes and bedding applications when specified.
Building Sand for Mortar, Paving and Concrete Work
The type of sand changes how a mortar, concrete or bedding mix behaves. MacBlair stocks building sand for workable bricklaying mortar and sharper grades for applications that need firmer particle structure, subject to the product description. Choose by the intended mix, not by colour alone.
Fine aggregate must be clean and correctly graded for the job. Pair it with the specified binder and measure batches consistently; too much water can increase shrinkage and reduce finished quality. Find related masonry and concrete building materials before calculating the full order.
Sand also supports paving, screed and general groundwork, but the required grade differs between applications. Where the project meets structural timber work or roofing construction, follow the drawings and manufacturer guidance for every interface rather than using a general mix by habit.
Sand FAQ's
A clean building sand intended for mortar is commonly selected because it produces a workable mix. The masonry type, exposure and specified mortar strength still determine the full mix design.
Sharp sand is used in some paving and bedding systems, but the build-up depends on the paving type and installation method. Follow the paving manufacturer’s specification for the sub-base, bedding layer and jointing material.
Calculate from the wall area, joint dimensions and specified mix proportions, then convert the volume to the supplier’s bag or bulk-bag yield. Joint depth, block size and waste can materially change the quantity.
Yes. Damp sand can bulk up, so a bucket of damp material may contain less solid sand than the same apparent volume when dry. Consistent gauging and a recognised mix specification reduce variation between batches.