Preventing soil roof vent clogs

[nowwhatnapster]

How do you prevent a 4 inch cast iron soil vent that reduces to 1-1/2" from collecting debris (leaves/sticks/etc)? See photo.

This photo is not mine, but I have the same setup. I believe this meets code in NY from a frost perspective.

Before i shop vac this thing, I would to find a code-permissible solution that prevents it from being a yearly maintenance item. Lots of trees and leaves nearby.

I was looking into grates/coverings, or perhaps a inverted U, but I think the whole point of code requiring it up-sizing to 4 inch was to prevent it freezing in the winter. So I'm worried any sort of grate or mesh will just cause icing at the grate. An inverted U comes to mind, but I'm not sure what that type of vent would be called.

 

[John Gayewski]

Put two 90's on it on the roof.

 

[Sponsor]

 

[nowwhatnapster]

Think I found something that might work instead of the 90's.

Josam 26700 Vandal Proof Vent Cap

https://www.josam.com/catalog/JOS/kb/26700

Looks like maybe Zurn makes some as well in cast iron.

 

[Reach4]

I would be thinking https://www.homedepot.com/p/Everbilt-3-in-4-in-DWV-MUSHROOM-VENT-CAP-HTD050304/334273676 or https://www.oatey.com/products/oatey-mushroom-vent-cap--1469620693

 

[nowwhatnapster]

I would be thinking https://www.homedepot.com/p/Everbilt-3-in-4-in-DWV-MUSHROOM-VENT-CAP-HTD050304/334273676 or https://www.oatey.com/products/oatey-mushroom-vent-cap--1469620693

Agreed, seems like a vent cap is the way to go. I'll probably move forward with the Josam or Zurn since those are cast iron and I prefer the durability and recycleability of cast iron. The Josam seems like it has a slight edge over Zurn with a higher ratio of free venting space.

 

[Slomoola]

4 inch cast iron soil vent that reduces to 1-1/2"

Wow and what is a soil vent?

 

[Reach4]

Wow and what is a soil vent?

OP is talking about a plumbing roof vent. In https://en.wikipedia.org/wiki/Drain-waste-vent_system note the three occurrences of "soil stack".

 

[Slomoola]

OP is talking about a plumbing roof vent. In https://en.wikipedia.org/wiki/Drain-waste-vent_system note the three occurrences of "soil stack".

Okay, learned something new today. Never heard it called that. Very cool.