What is the effect of humidity on a typical one component architectural sealant?
Humidity is generally only a factor when applying one component moisture cure sealant. The effect of humidity can be summed up as follows: The higher the % relative humidity the faster the sealant will skin over and ultimately cure through. And of course at lower humidity levels the skinning process and ultimate curing will be extended. Low humidity levels are characterized as below 30% relative humidity and high humidity levels as above 70% relative humidity. The effects of temperature as explained above must also be considered when applying a one-component sealant. The higher the temperature and humidity the faster the skinning and ultimate cure.
