Need a reliable "summertime" angle based on my location

[SunEagle]

Understood. All the added vent. gets rid of a lot of heat.

FWIW, consider if the fans do get turned on, they may have something of the opposite of, or reduce the intended cooling effect by, depending on relative locations, sucking air inward through the long roof vents and reducing flow through the soffit vents, perhaps increasing the overall roof temp. which is the source of the attic heat in the first place.

I agree. I didn't want to take the chance of pulling in hot air through those ridge vents so I did not put the panels back and probably never will.

Air flow dynamics can be pretty tricky if you do not have the correct opening and restriction information to run the calculation. .

[easye]

Why would this matter? He is installing a ventilator...

lol x2. you might spend more in food for the calories than you get back changing the angle. regardless make sure you have proper intake prior

[J.P.M.]

I agree. I didn't want to take the chance of pulling in hot air through those ridge vents so I did not put the panels back and probably never will.

Air flow dynamics can be pretty tricky if you do not have the correct opening and restriction information to run the calculation. .

And to my experience even then it's a crap shoot +/- 20% at best most of the time, especially when mean ol' Mother Nature tosses in the wind vector.

[newsol]

i'm thinking of installing an attic fan since my second floor gets really hot at nights

[newsol]

would a radiant barrier help it keep cool in summer as well?

[J.P.M.]

would a radiant barrier help it keep cool in summer as well?

Depending on location, climate and uses, attic floor insulation, or roof insulation if occupied space, or radiant barrier, or ventilation or all three, and/or more may be appropriate.

[SunEagle]

would a radiant barrier help it keep cool in summer as well?

Any type of insulation helps maintain the temperature between the attic and rooms below. If your roof is very dark and you get a lot of sun than the air beneath the roof will heat up.

Using a radiant barrier help keeps the heat from getting much beyond the air space just below the roof but that heat builds up and must be removed. That can be done using a ridge vent along the roof peaks or some type of ventilation that pulls the hot air out of the attic.

While this may sound simple you really need to have someone engineer both the barrier and fan to make sure the suns heat is kept out of the house and properly vented.