Cementitious Waterproofing Coating
Cementitious products are some of the easiest waterproofing materials to use. They’re usually readily available from local suppliers of hardware suppliers, masonry products, and they’re easy to mix and apply. Come as a cement like powder to which usually only water is added and mixed until the correct consistency is achieved.
Usually all you need to do the job is using this type of material, a long-handled stiff bristled brush will make your life easier. Another advantage of the cementitious waterproofing coating is that can and should applied to a clean damp surface so there is no need to have a dry wall.
The best advantage of a cementitious waterproofing coating is that it can be applied from either side of a building structure to prevent water penetrating and degrading the building structure and it must be applied to damp surface.
Should a crack develop after application then it can in most cases be repaired from the inside on the internal wall.
Liquid Membranes Coating
Liquid membranes can be applied by spray, roller, brush or trowel. The wall being treated usually need to be completely dry. The Membrane coating cures into a coating which may feel rubbery, spongy or soft to touch on the wall. Manufacturer has a spray / brush -applied water based liquid membrane composed of water based emulsified asphalt.Polyurethane liquid membranes are also available but a caution for these is they are usually degraded by exposure to sunlight (Ultra Violet light) so if a little is left exposed then degradation will affect the viability of the total coating as water can enter above ground causing delamination of the membrane.
There are special procedures for treatment of wall-footing joints, voids, form-tie holes, and joints.
Liquid coatings may quick and easy to apply, like cementitious coating also be reasonable cost, and samples show excellent elongation. A major disadvantages can be inconsistency in coverage and any pin holes left in the coating will most certainly come back to haunt you.