Crack Injection Permatech has a range of products suitable for crack repairs in concrete. For structural non-moving repairs, typically Megapoxy HX is used. We also have several systems for injection including capsules, balloons and a pump. For non-structural crack repairs we have water reactive polyurethanes which can accommodate a degree of movement.
Permatech also supplies high quality sausage guns. The break even point for swapping from cartridges to sausages is generally only about a box of cartridges (i.e. if you were to buy the equivalent volume of material in sausages, you would be better off to buy half a box of sausages and a sausage gun)*. This is because the price variance between sausages and cartridges is usually marginal, but the quantity of material in a sausage is usually twice the volume of a cartridge.
*As at pricing of 15 August 2016, anything over 16 cartridges would work out more economical to purchase a sausage gun and half the number of cartridges in sausages.
Backing Rod We stock a range of backing rod - both open and closed cell in a variety of diameters. For large construction joints, we also have foam strips in 30mm x 40mm x 2m and 30mm x 50mm x 2m rectangular profiles. We can get foam specially cut to size on request with fast turnaround times. We have rolls of expansion joint foam in a variety of widths in both adhesive and non-adhesive backed varieties, featuring a 10mm zip.
Concrete Coatings Megapoxy MC - a heavy-duty solvent free epoxy coating system. It is suitable for application to vertical surfaces and cures to a tough, smooth, hygienic film, resistant to abrasion, impact, and a wide range of chemicals.
Megapoxy 132 - a two-component solvent-less low viscosity epoxy system. With some flexibility the product has good impact resistance and retains excellent durability and chemical resistance. It conforms to the requirements of the Department of Primary Industry for coatings and flooring used in food processing establishments including export abattoirs.
Concrete Sealers - Single Part There are two main types of concrete sealers - penetrating sealers and surface sealers. They are usually designed to make the concrete water repellent, and may offer protection from chemicals and resistance to staining agents.
Penetrating sealers work by reducing the porosity of the concrete via the delivery of microscopic solids via a solvent. This system generally does not alter the appearance of the substrate, and because it does not sit on the surface of the concrete does not significantly alter the slip resistance of the dry substrate.
Surface sealers are designed to bond tenaciously to the concrete and form a physical barrier between liquids and the substrate. These sealers can make the concrete appear significantly shinier and will reduce the slip resistance of the dry substrate. Slip Resistant additive can be added in suspension when the product is applied.
If you do not want the appearance of the concrete to change, penetrating sealers are likely to produce the best result. Penetrating sealers are more expensive, and it should be noted that in either case, you still need to clean off spills and surface contaminants if you want the surface to appear and remain clean.
Options include; Sealco Floseal - a penetrating concrete and masonry sealer Hardtop ASB - a solvent borne acrylic surface sealer