Humidity in screen drying room

[Maxie]

Can the humidity be too low in a screen drying room?
I bought a new unit and it's at about 25 humidity.

[ericheartsu]

It can be. You can start seeing issues like spider webbing/cracking in your emulsion. Also if you have a CTS unit in your dark room, it can start to dry heads out.

[Frog]

As per Easiway's and (formerly) M&R's Alex Mammoser "Typically all screens like 30-40% RH to dry in/at. This is truly ideal for most CTS machines as well."

[mk162]

Or go wax...can't dry out.

We keep ours at about 40%.  We do run an AC in the summer to help dry it out and keep it a touch cooler

[jvieira]

We are doing our best to keep our screen room at least at 60% but it's not an easy task. lot's of humidity at the moment even with a dehumidifier on 24/7

[ABuffington]

We recommend 35-50% humidity for emulsion.  And as mentioned, when it is too dry, emulsion can crack during production.  In some cases in cold very dry conditions of less than 20% it helps to have a childrens humidifier in the room.  A hygrometer that reads temp and humidity is an inexpensive tool to put on the wall to dial in the screen room.

[TCT]

On Mr. Buffington's advice in the winter here(MN cold and dry) we turn off our humidifier and fill up a old emulsion bucket of water and set it in the screen room. It has 100% eliminated the cracks/breakdown we had a few years ago...