Mortar normally uses cement or lime with a suitable building sand, while concrete also needs coarse aggregate. Screed uses a finer, purpose-matched mix for forming a floor layer, and self-levelling compound is used to smooth a prepared subfloor. Follow the project specification or product data sheet before choosing.
How Expansion Joint Components Support Brick and Block Construction
MacBlair stocks the core materials used to mix mortar and concrete, secure posts, form screeds and prepare uneven floors. The range covers cement, sand and aggregates alongside ready-mixed cement, Postcrete, lime, fire cement and self-levelling compounds. Start with the job and required finish, then choose the correct product rather than treating every dry mix as interchangeable.
Bagged building materials for masonry and concrete work suit projects where quantities can be measured and mixed on site. Ready-mixed products reduce measuring on smaller repairs, while Postcrete is made for setting fence and gate posts. Floor screed and self-levelling compound solve different problems, so check the substrate, layer depth and covering before mixing.
Plan the surrounding work at the same time. Structural timber and treated timber may be needed for framing or outdoor builds, while roofing materials and weatherproofing products support projects that must be closed in and protected from rain. Follow the product data sheet for proportions, working time, curing and protective equipment.
Sand, Cement and Aggregate FAQ's
No. Ordinary cement is a binder that must be combined with the correct sand, aggregate and water for the job. A ready-mixed bag already contains measured dry components, so check whether it is intended for mortar, concrete or repair work.
Calculate the finished volume from the area and required depth, then use the coverage stated for the chosen product. Allow a sensible margin for compaction, uneven ground and waste, but do not rely on one generic ratio for every application.
A dedicated post-setting mix is selected for fast placement around posts, while bricklaying mortar needs the correct strength and workability for the masonry. Using a product outside its stated application can affect working time and performance.
Cement dust and wet mixes can irritate skin, eyes and airways. Wear gloves, eye protection and suitable respiratory protection for dusty work, avoid skin contact, and follow the safety data sheet on the bag.