Desert heat
Hello, Will be heading out the SW portion of the US in a couple weeks. Some of the places we'll be staying will be 100+ degrees for the highs. What do I need to take into consideration with my TT to...
Forum Discussion
pnichols wrote:
What is the insulation in the roof vents intended to be for ... to 1) keep the cool air conditioned air from escaping the living area, or to 2) keep the hot air from the outside from getting into the living area, or to 3) keep the sun from heating up the vent and thus heating the air in the living area?
It it's 1) ... cool air doesn't rise anyway. If it's 2) ... how can hot outside air get in a closed vent regardless of any insulation? If it's 3), will vent covers shade the vents such that the sun can't heat up the vent?
We have vent covers over all vents, and I'm wondering if and why the vent insulation is needed.
#2 - For the reason you mentioned, insulation. In the same way that dual and triple pane windows are more efficient than single pane ones. Even with the vent cover, the hot outside air is making contact with the fairly plastic of your cover. Adding 2" of foam makes a noticeable difference.
In our case, a secondary benefit is eliminating a potential source of night-time light right over our bed.
