Quote Originally Posted by craigafrechette View Post
Are your heat sources on thermostats?

And to elaborate: are you using a probed thermometer to measure the surface temps? Are you using a temp gun?
Are you measuring actual surface temps? or the substrate temps? or just ambient temps?
I use a probed thermometer to measure the temps, substrate and surface, I check these temps every week or so; or when there's an increase or decrease of temperature in my house or outside.