'Well begun is half done', However, in the world

by:ZHENHUA     2020-06-13
In this article let's review some basic preparatory steps that will ensure a coating that last long & offer the best possible protection for your walls & other surfaces. Never paint in Fog / mist / rains: Though this is a very basic rule, owing to time & other constraints, it is overlooked. However, application of a coat during such circumstances is never recommended. Water acts as a barrier. It may form an invisible & micron-thick film on the surface. This film will prevent strong adhesion between the liquid rubber coat & the concrete. If this happens, deamination or separation of layer can become a major headache. More so, because minute deamination is not immediately visible & water starts seeping between the liquid rubber coat & concrete due to capillary action. This increases the possibility of concrete erosion & soon the roof might start seeping even though the owner has applied liquid rubber paint to protect it from the exact same occurrence. Additionally, if coating is carried out during mist or fog, water molecules can remain trapped in the concrete as well as on the surface. Again the same problem highlighted as above will occur. One may use heating equipment to evaporate the water moisture away, but it will only add to the expenses & one cannot fully guarantee that the coat will be able to withstand. However, modern day liquid rubber paints are capable of being applied even during a slight downpour to do an emergency stoppage of leak. However, if one wishes to have long-term protection one has to definitely wait for application of the liquid rubber paint till the fog or mist goes away & a bright & sunny day appears. Finally, if one has to paint in such weather, one has to be ready to wait for a longer time for the liquid rubber paint to dry. This is because drying time increases exponentially in the absence of the heat of the sun & dryness in the air to absorb the moisture. In case one has a cloudy day, blowers can aid in getting the surface dried, but it is routinely advised to choose the sunny days to apply the liquid rubber paints. One of the other basic preparatory steps is the removal of all moisture from the concrete. The surface should be as dry as possible. Concrete usually gives out a lot of water vapor & moisture as it is drying. If the liquid rubber paint is applied before the concrete is dried completely, one will surely have problems of mildew or algae growing in damp corners.
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