How to Stop Gable End Attic Vents From Leaking 

I agree with you. However, I added ridge vents and intake baffles during this time to the attic as well so I have plenty of ventilation. If I wasn’t going to do that then I would have set them back at a 45 like you suggested. They were just easier to make this way. I think I mentioned this in the video.

@@HowtoHacks I'm learning about this now. Most research I find indicates you should NOT combine gable vents with ridge vents. This is why someone might have had your gable vents closed up with the Styrofoam that you mentioned.. if you google it, everything I find says the best system is soffit vents combined with ridge vents is the best system. A gable vent thrown into it actually causes suction and throws off the natural flow of the air from the soffit vent and the ridge vent.. I believe I need to close off my gable vents, add the baffle vents you mentioned to avoid insulation from preventing air flow from the soffit to the ridge vent.

here is the video I've found explaining that. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-CWkTyG8LAsI.html

@@mar4380 Yes this is the case. However the people who put the last asphalt roof on my house didn’t cut the roof decking back at the peak so there technically is was no ridge vent as it was blocked.

@@HowtoHacks so you installed ridge vents that don't actually function because the decking isn't cut and kept your Gable vents but impaired them?

It probably does slow air flow some. I was in my attic recently to check it actually. It was 90 degrees outside and I could feel the air flowing through and it seemed about normal (however I didn’t take a temperature reading). It all depends on what other types of ventilation you have (ridge vents, soffit vents, can vents). If you’re worried about airflow you can make the box extend out from the vent farther which would make the opening bigger at the top.

This will work for that as well.

No mold. I I inspected very closely too.

You’re welcome

Open at the top to let air in and out. This old house has a segment on this as well.

Watch the video again. The air flows in and out through the top of the box as it’s open. You can angle it back if you want. It’s just easier to fabricate as a box. The bottom of the box does have a slight angle to it so water will drain out. I made mine with aluminum coil stock but there’s many different ways to build this. You can build it out of plywood and line the plywood with aluminum as your vent is pretty big.

Yeah I know. It’s hard to film in an attic.

That is something to consider. However, these vents were completely blocked off since the house was built so this is more airflow then there was before.