High Humidity Coating Guidelines

[LegacyIndustrial]

GJ Members, guests and lurkers:

Some tips for coating in high humidity:

Wait to apply coatings until late evening when temperatures may decrease slightly.

Mix smaller batches to ensure you only mix what you can apply before the coating begins to cure.

Because some coatings systems are sensitive to high humidity levels, they should not be applied when relative humidity is above the manufacturers recommended levels. Typically, the relative humidity should be less than 85%, consult our technical data sheets for each product's recommendations.

In garages or basements, the use of a de-humidifier may help create ideal curing conditions.

NOTE: Not all products are sensitive to high levels of humidity; some of our Legacy Industrial products, such as our clear urethane topcoat/sealer HD356VOC, may be a better choice for areas with high humidity.

Hope this helps some of you. This applies to ALL epoxy products, not just Legacy Industrial's line-up.

 

[pauloman]

especially what waterbased or waterborne coatings! These coatings also contain regular solvents... They expect the water to evaporate away at a certain rate. With high humidity the water evaporation is retarded and bad things can happen

 

[pauls_workshop]

Just a comment for our manufacturers: Thank you for this kind of great advice! This helps people on the forums. DIY epoxy is a tough thing to try to do. We have some super manufacturers and installers and experts on this forum that help people overcome the many (real) fears and also (real) obstacles in doing a successful epoxy job themselves and for reasonable cost. Keep it going!

Note, this is in sharp contrast to spammer installers or manufacturers who jump on the forum, post 5 or 10 times, direct you to only their website to solve your problems, then disappear for months or years, only to reappear again when they need some business. We've had several of those lately which are nothing less than annoying. - Paul

 

[The Bramptonian]

I just ignore the spammers. They are so easy to spot.

Just a comment for our manufacturers: Thank you for this kind of great advice! This helps people on the forums. DIY epoxy is a tough thing to try to do. We have some super manufacturers and installers and experts on this forum that help people overcome the many (real) fears and also (real) obstacles in doing a successful epoxy job themselves and for reasonable cost. Keep it going!

Note, this is in sharp contrast to spammer installers or manufacturers who jump on the forum, post 5 or 10 times, direct you to only their website to solve your problems, then disappear for months or years, only to reappear again when they need some business. We've had several of those lately which are nothing less than annoying. - Paul

 

[The Bramptonian]

Good information legacy, kudos to you! Thanks!

Typically, it is impossible and impractical to use dehumidifier in a garage that has been freshly coated. Just a question - where do you expect to put the humidifier on a wet surface? Every square inch of the garage is wet and there is no space to put dehumidifier expect outside of the door which totally defeats the purpose as you can not close the door.

It will work in basement but with the same caveat - you need space where you can put the dehumidifier.

GJ Members, guests and lurkers:

Some tips for coating in high humidity:

Wait to apply coatings until late evening when temperatures may decrease slightly.

Mix smaller batches to ensure you only mix what you can apply before the coating begins to cure.

Because some coatings systems are sensitive to high humidity levels, they should not be applied when relative humidity is above the manufacturers recommended levels. Typically, the relative humidity should be less than 85%, consult our technical data sheets for each product's recommendations.

In garages or basements, the use of a de-humidifier may help create ideal curing conditions.

NOTE: Not all products are sensitive to high levels of humidity; some of our Legacy Industrial products, such as our clear urethane topcoat/sealer HD356VOC, may be a better choice for areas with high humidity.

Hope this helps some of you. This applies to ALL epoxy products, not just Legacy Industrial's line-up.

 

[mdameron]

Some garages and basements have shelves on the wall.

 

[LegacyIndustrial]

Stairs/steps/landing....
It could be placed outside and tented in against the door jamb.

 

[Shea]

I hung one from the rafters once. It was the only time I used one and it did the job.