Sealants fit for purpose


How do you choose the sealant that is fit for purpose?

Achieving the right movement capability is one factor, but what about chemical resistance, UV stability, paintability, fire ratings and compliance with potable water standards? “It is imperative that sealants are specified and installed correctly,” explains Colin Picton, Fosroc ANZ Product Segment Specialist for Waterproofing & Sealants.

For the construction industry, Fosroc is a one-stop shop for sealants. “We have polyurethanes, hybrids, silicones, polysulfides and now a polyurea sealant,” says Colin.


The Fosroc Nitoseal SC silicone range offers sealants for infrastructure, general construction and other specialist requirements, such as anti-pick sealants for prisons, bio resistance and AS4020:2018 potable water compliance.


Polyurethane sealants are well known in the ANZ market, used in home renovations right through to large general construction projects. Fosroc Nitoseal PU polyurethane sealants enable gunning up to three times faster than other PU sealants on the market, especially in colder climates.


“Fosroc Nitoseal MS250 and MS400 use polymer technology to blend silicone and polyurethane. They are friendlier on the world and the user, compared to PUs,” Colin says. “Excellent weathering and adhesion performance are key physical benefits.“ They have no isocyanate, low odour and very low VOC, they can

also be painted over, unlike straight PU sealants that can suffer from plasticizer bleed.


Where fuel resistance and fast return to service are important, Fosroc’s Thioflex range is a trusted solution for roads, airfields and refuelling stations, bridges, carparks and transport hubs.

New Nitoseal PY350 is a hybrid polyurea sealant that offers quick return to service times and wheel resistant hardness for concrete floors in retail, warehousing, bunds and other industrial settings.

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