Quote:
Originally Posted by penguin  Not true.
Reflectix is more reflective than flat white paint and will do nothing "reduce your ventilation" unless you put it over your intake or exhaust ports and obstruct airflow. 
Penguin |
Fully agree, but although he expressed it wrong, because it isnt ventilation related, he was right in one sense: reflectix tends to make a hot air layer between it and the wall, reducing cooling (not ventilation).
And it have another disadvantage in a very small cab, depending of the lighting: specular reflection, increasing the risk of hot spots, especially using HPS.
The way to increase flat white paint reflectance is using barite with it. BaSO4 is used in integrating sferes due to its very high reflectance and lambertian behavior (no hot spots). The mix with paint increase its durability and enhances its reflectance over mylar and reflectix setups in real conditions, due to the far easier manteinance.
knna