Famco sells a j vent with a 1 8 inch screen but wasps might be able to get thru that if they really wanted to.
Wasps in roof vents.
This debris may slow down how the fans operate or otherwise affect the interior structure of your unit.
How to get rid of wasps in roof vents step 1.
For example a nest may shed debris that falls into your hvac system and causes damage.
Non poisonous method to get rid of a wasps nest in a roof you can use a garbage bag inside a landing net and a long handled scraper to remove the nest from the roof where it is attached.
Wasps getting thru attic vents.
Check your attic for.
Spray an insecticide into the vent to kill any wasps that are currently in the vent.
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As explained in our wasp control article they like sheltered spaces and voids for nest building so the sides of homes up under soffits and roof lines are perfect locations for them to live.
Here is a story about leaving a nest in a roof.
At the end of the year the queen will produce young queens for the next year.
Cover the vents with plastic bags for several days to prevent more wasps from going into the system.
In general wasps will find these places attractive any time of year.
Many of the ridge and other types of attic vents i ve seen have louvers with almost 1 4 inch slits that are big enough for wasps to get thru and they do not have any secondary screen.
Dont leave a wasp nest in your roof.
Make sure you use gloves long sleeved clothes and a protective mask.
Https amzn to 2muyifp i heard a buzzing sound coming from the vent in the bathroom and couldn t imagine how i was going to get them out o.
They could hibernate in your loft causing you more problems the following year.