DWncchs
Well-known member
- Joined
- Aug 23, 2009
- Messages
- 341
What makes them so finicky ? Some days I'm really impressed with what you can do with them (like finding a dead cylinder by shooting the exhaust manifold) and then other days they just act stupid.
Short story...we bought an old park model trailer in Fl to use as our winter getaway (snowbirds) and I'm working on the roof. Got all the leaks fixed and moving on to different roof coatings for standing up to the Fl sun and reflectivity.
At the present time I've set up different surfaces and colors on the roof. Here is my situation. The roof is new roll roofing coated with silver dollar roof coat except for my test area's where I have left some roll roofing uncoated,some coated with black tar roof sealer and some coated with water based white elastomer coating.
temps.
black tar roof-- 160
uncoated roll---150
silver coated---125
white coated---125 ....???
If I put my hand on the black it will burn my hand,the silver is very hot but the white is almost cool in comparison.
Why ? Is the white "really" the same temp as the silver and for some reason doesn't transfer the heat to my hand ?
(Bottom line I want less heat coming through the roof into the ceiling of the trailer but with the heat gun I can't seem to see ceiling temp differences inside the trailer,but in reality the inside test is flawed because the diff colored areas are to small to make much difference.)
Short story...we bought an old park model trailer in Fl to use as our winter getaway (snowbirds) and I'm working on the roof. Got all the leaks fixed and moving on to different roof coatings for standing up to the Fl sun and reflectivity.
At the present time I've set up different surfaces and colors on the roof. Here is my situation. The roof is new roll roofing coated with silver dollar roof coat except for my test area's where I have left some roll roofing uncoated,some coated with black tar roof sealer and some coated with water based white elastomer coating.
temps.
black tar roof-- 160
uncoated roll---150
silver coated---125
white coated---125 ....???
If I put my hand on the black it will burn my hand,the silver is very hot but the white is almost cool in comparison.
Why ? Is the white "really" the same temp as the silver and for some reason doesn't transfer the heat to my hand ?
(Bottom line I want less heat coming through the roof into the ceiling of the trailer but with the heat gun I can't seem to see ceiling temp differences inside the trailer,but in reality the inside test is flawed because the diff colored areas are to small to make much difference.)