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Mortarthane HF was specified to resurface a pitted concrete floor to resist thermal shock from daily hot water wash downs.
The whole floor needs to be torched with a propane torch or the like. According to manufacturer recommendations there should always be a temperature of 40 and above on a concrete slab when you are applying urethane cement, the preferred system under such circumstances.An industrial flooring coating, such as an epoxy floor coating should also be applied in at least room temperature.
Therefore compensating steps must be taken to bring the temperature of the slab into the recommended temperature range. Under such circumstances there is very little time to apply the urethane floor coating. The colder the temperature the higher the material viscosity will rise. So the colder the temperature, the higher the viscosity or thickness, and the harder it is to apply to the floor.
If you have a hotter floor, and you are operating in 70 to 80 degrees inside, the material will stay looser.
Room temperature is the ideal for application of concrete floor coatingsin cold environments In freezing conditions, there have been installations in temperatures ranging from 31 degrees to 36 degrees where the contractor has taken all steps to bring the slab in spec. range through torching and they work extremely fast to get the work done. Torching accomplishes bringing the moisture out of the slab and heats the floor as fast as possible.
A freezer shutdown is not an option for most owner managers. Most of the freezers that are in meat processing areas have to remain cold at 31 to 36 degrees. In some cases, a contractor will begin the resurfacing job just like any other floor, shot blast the concrete floor using the correct vacuum ports for a dust free preparation process. This is followed by a thorough torching of the floor to remove all frozen moisture in the slab and assist in keeping the surface temperature high enough to apply the urethane mortar.
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Source: (concrete floors) http://www.floorcoatingtv.com/low-temperature-floor-coatings/t1-low-temperature-floor-coatings
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However, a pool heater allows you to extend usage of the swimming pool from early spring until later into fall even in cooler regions of the country.
In warmer regions, installing heaters would make swimming pools usable 365 days in a year.
In general, there are three classifications of swimming pool heaters: gas-fired heaters that use propane or natural gas, oil-fired heaters and heat pumps. Pool gas heaters continue to be the most common swimming pool heating option. Raised consciousness of the environment and energy efficiency paved the way for the emergence of solar heaters and heat pumps.
Water source and geothermal heat pumps are also being introduced to the market although with higher first cost. Nowadays there are more efficient pool heaters compared to older systems. Advances in technology have significantly increased efficiency of traditional pool heaters. Innovations in mechanical engineering, heat exchanger technology, pilot-less ignition and hydraulics have raised the bar in heater efficiency.
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Found At: (raypak gas pool heaters) http://ezinearticles.com/?Pool-Gas-Heaters—Heating-Efficiency-Without-the-High-Costs&id=3735021