Ridge and Sifft Vent Effect on Indoor Temperature


#1

I plan to upgrade my attic ventilation from the current two end gables to a ridge and soffit vent system. My house is a two story colonial in Maryland.

Will I notice any effect on the temperature in the second story inside my home? I have R38 attic insulation already but it is still a few degrees warmer than the downstairs temperature. I haven’t heard anyone claim that it improves the indoor air temperature but it seems like it would.


#2

make sure your insulation is not blocking the airflow from the soffitt to the ridge. use insulation baffles.


#3

I checked and it is not blocking the soffit but apparently a nice pice of wood is!

So now I have to decide if it’s worth paying the $$ to have the wood cut into or not.

I still have the question about how much, if any, adding ridge and soffit vents will reduce the indoor air temperature during the summer.

Any ideas?


#4

Roboman,

A few degrees at best, depending on many variables.

Your best option is to increase your ceiling/attic insulation.

And keep your gable vents in addition to the ridge vent.

Roof Ventilation Basicslink


#5

Thanks Dennis.
That’s what I figured but even dropping the temperature from 80F to 78F can make a difference in how you feel.


#6

How about just adding a thermostatically-controlled fan to one of the gables? This is what I have planned. I recently started a post about this.