hi fellas ,, just wondering if the heat affects the spraying of acrylic lacquer at all
what is the highest temp and humidity that is acceptable
spraying acrylic lacquer in hot weather
Started by
_pocock_
, Jan 10 2013 11:38 AM
10 replies to this topic
#2
_Quagmire_
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Posted 10 January 2013 - 02:16 PM
it should say on the tin
you can use retarder thinners to slow the process down
it's best to do the spraying in the lowest humidity point of the day too
you can use retarder thinners to slow the process down
it's best to do the spraying in the lowest humidity point of the day too
#3
_pocock_
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Posted 10 January 2013 - 02:56 PM
no advice on the tin at all just mixing ratio instructions. i have sprayed a fair bit of lacquer just not at this time of the year when its hot so just seeking advice i usually spray when the humidity is 60% or lower
#4
_Quagmire_
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Posted 10 January 2013 - 03:53 PM
i try to do it below 24d...but that's just me
#5
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Posted 10 January 2013 - 07:05 PM
The advice I was given many years ago was above 23 degrees C and warmer (low humidity is also good) is better but remember the hotter the air temp is the faster the solvents evaporate and getting your paint to flow well may become a problem. Some retarder thinner (up to 10% I think) in the mix will slow down the drying time a little and allow your coats to flow better but generally you should only need to use it, if necessary, in the final coats to attain a good gloss level.
Worst comes to worst you can always let it cure then cut it back and apply a couple more coats.
Worst comes to worst you can always let it cure then cut it back and apply a couple more coats.
#6
_Tony75350lh_
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Posted 10 January 2013 - 08:57 PM
S pack has pretty well covered it, spraying in too hot of a temperature without the correct retarder will cause the solvent to evapourate too quickly causing solvent boil, poor flow rate and a lower gloss retention. You should be able to get the Technical Data sheets for your specific paint from where you bought it from and that will cover everything you need to know about correct temperature, humidity, additives, viscosity rate, curing times and so forth.
#7
TerrA LX
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Posted 11 January 2013 - 08:31 AM
i try to do it below 24d...but that's just me
Agree. 24degC is where it's at.
Retarder thinners will help above that.
#8
_pocock_
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Posted 11 January 2013 - 10:53 PM
yeah thanks fellas went and got some retarder today , not overly keen on useing it but will give it
a go the bloke at the paint shop said ,just use it at 5% and go easy on it
a go the bloke at the paint shop said ,just use it at 5% and go easy on it
#9
_tryhard_
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Posted 11 January 2013 - 11:02 PM
use the best top coat thinners and add about a cap full to every spray gunpot off paint
#10
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Posted 12 January 2013 - 09:25 AM
Obviously don't spray in 100% humidity, you can check if humidity is too high by spraying your gun empty onto the ground or wall, there should be no water condensing on the surface.
#11
_pocock_
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Posted 12 January 2013 - 10:56 PM
yeah thats what i was thinking of doing add about a cap full per gun ,,,thanks mate
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