Plumbing Vent Size

Here is an interesting tidbit. You dont need 11/2, 2, or 3 inch vents unless local code requires those sizes. Most codes are pretty ambivilent, stating that the vent should be sized for good function. Thats way open to interpretation. Many modern houses only have 2...

Some Old Vent Shields

I had a contractor send me some pictures of some homemade shields from way back that were made of painted galvanized pipe with a screen soldered on top. This will work, but doesnt look so good. Also my shields are the only ones that stop damaged vents from leaking, so...

Flashing Requirements

We had an enquiry the other day asking do you need the lead flashing if you use a critter quitter. Yes, you need either lead or rubber flashing to seal the vent to the roof. The critter quitter simply protects this flashing from damage from squirrels and keeps other...

Determining Vent Size

This has been a reoccuring question, and one that will be addressed on our website. Vents come basically in 1 1/2 inch, 2 inch, 3 inch, and a rare 4 inch. However, the flashing is about an inch wider than the diamter of the actual vent. So a 1 1/2 inch vent will have...