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vapor barrier

vapor barrier

vapor barrier

(OP)
Dear all!
we want to use a vapor barrier mastic for cold insulation in refiner industry. my contractor supply a more ton of material and expire date of these finished.\
we opened a can and see that material was a good condition and apply in the site an also was a good . so can we use it if we send its samples to laboratory and test the mastic for cold Resistance, water vapor transition(as ASTM E96) and other tests?

RE: vapor barrier

If it is out of date, it should not be used. The manufacturer puts a use by date on its products for good reasons.

RE: vapor barrier

(OP)
Dear!
For industery and refinery causes what is a suitable vapour barrier for cold insulation? Warer or solvent base?

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