Coating Reference Handbook - Hempel
Coating Reference Handbook - Hempel
Coating Reference Handbook - Hempel
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HEMPEL<br />
Can we paint today?.<br />
WIND SCALES R21<br />
Not only the humidity and air temperature decides this, but for painting in the<br />
open also wind may become an important factor:<br />
Below is given the standard wind scales used and comments regarding suitability<br />
for airless spray application.<br />
Beaufort<br />
number<br />
(force)<br />
Wind Speed WMO<br />
s mph m/s km/h Description<br />
0 32 118 Hurricane<br />
Even at lower wind speeds, then local conditions e.g. in between tanks may<br />
create stronger winds than average and make spray application in these areas<br />
critical.<br />
Suitable shields can reduce the effect of winds, they should be maintained during<br />
the whole drying process as well as strong winds also tend to skin dry freshly<br />
applied coatings and thereby cause solvent retention.<br />
Brush and roller application are much less affected by wind.<br />
INSPR21 ed1 VALIDITY SUBJECT TO CONFIRMATION 05/03/03 EMi
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