hammy
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Trade paint should not be confused with contract or supermatts
A contract paint is for all round contracting really, not the best quality, but priced or the job. Usually has good obliterating power.
For the new plaster, supermatt or covermatt emulsion can be put on before the paint has fully dried. It is water permeable, so the moisture comes out through the paint without pushing it off. Vinyl is not water permeable, so should not be used on new plasterwork. (Unless it is just a thin skim coat, and then not til it's dry.)
Trade paint is sometimes thought to be of not so good quality. This is not true, it is a different quality, made for the professional user.
Quite often it is more expensive than 'normal' paint. The stuff you buy from the sheds, has a 'built in body' so the diy'er can paint without getting runs, or to use the technical term, snots.
Trade paint can often be in the back of a van for a long while, thickening up in the cold weather. This can be thinned without losing any of the body. Thin 'normal' paint and you can be prone to runs.
As regards those poxy jobs on the television, well I have seen some in the flesh, and believe me, if a decorator did work like that in your house, you would have him out the door in a flash.
And when the cameras are off, that's when the mob go in to make sure it's finished in twenty four hours.
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