Polyureas and Polyaspartics were originally developed for coating steel to prevent rust. The outstanding polyurea coatings qualities of such as a fast cure and durability led to playing for use on concrete industrial flooring.
What are Polyaspartic and Polyurea Coatings
Simply they are a complicated version of concrete floor paint. They are a two component product that are mixed together prior to application and are thrown on top. They come in clear but are usually pigmented with dreary or tan but any color can be created. Plastic colored chips can be broadcast into the surface while wet. The full broadcast can be applied which looks like a terrazzo finish or chips can be lightly spread to give a little more character.
Benefits of Polyureas Over Epoxy Coatings
- Rapid Cure — Polyureas can dry in an hour so multiple applications can be applied in a day. For businesses that cannot allow for downtime this handles a big problem. An example is a company that can only allow for downtime over a weekend. With the right surface prep equipment the concrete can be ground smooth over a Friday night, breaks and spalling fixed the next morning with two applications applied on a Sunday, two on Saturday and in service for Mon morning.
- Adhesion To Concrete — Polyureas have the unique capacity to “wet” into concrete. This means they absorb into the concrete after the surface is ground smooth with industrial floor grinding equipment, diamond cutting blades and a dustless vacuum system. The advantage is that the polyureas cure within the concrete rather than staying with the surface as an epoxy. This significantly takes away risk of delamination. Highly trained professionals will test the solidity of the concrete and adjust the”wetting” for a particular surface.
- Cold temperature Application — It has been reported that polyureas can be applied at below zero temperatures. Though few would attempt in extreme cold a coating can be applied on a cold concrete floor. This means projects can completed year round.
How Polyaspartic and Poyurea Coatings are Applied
- Grinding The Concrete Surface — This involves specialized equipment, diamond cutting blades and a dustless vacuum system. The applicator will adjust the speed of the diamonds which move over the surface grinding the top layer of the concrete. This creates a lot of dust which is within specialized high power vacuum systems. The grinding process removes the altitudes and lows in the surface creating a flat floor.
- Crack Repair — Because polyureas can be thinned, they can fill a crack right to the bottom about 4 in .. Most crack filler injections only fill what you can see and really just serve as a bridge in the crack an individual 1/4″ one inch. The most effective crack repair will flow to the bottom, cure below the surface and “wet” into the wall of the crack with flexibility. Polyureas do it all. They block moisture watery vapor pressure that can delaminate a coating.
- Application of Polyurea Industrial Flooring — Once the surface is ground smooth and flat the coatings are thrown on top. Since the floor was ground smooth the coatings are applied at a good depth throughout the floor.
- Rapid Cure and Fast Come back to Service — In new construction or remodels an easy coating application is a money saver. Most coatings take a week to apply and cure. With the proper surface preparation equipment and manpower a 10, 000 sq foot floor can be applied in 3 days and suited for the fourth. It is even possible to complete larger floors with enough equipment.
Slip Resistance, Recoat, Durability and Easy Maintenance
A complicated professional uses a specific size not for slip aggregate in each coating layer. Aggregate size is very important to work. Too large and it will sink to the bottom of the bucket during mixing. Too small and it will be lost in the mix and turn into ineffective. Building the right size into each layer ensures slip resistance above the legal standards for the life of the floor.
Floors will wear from use. Excessive wear will require a recoat and not all coatings can be recoated. Most will require complete removal with excessive wear. Polyureas on the contrary can be lightly sanded and resurfaced to look and perform like new. Again an element that outperforms other systems.
Polyasparics and polyureas are extremely durable like epoxies while being safer to maintain. Epoxies and polyureas will get damaged. The difference is that a scratch in epoxies gets frayed, holding dirt and bacteria. Polyureas get a straight scratch which means routine cleaning removes dirt and bacteria while prolonging life of the floor.