In dark colors the special paint still doesn't like to last. They fomakea colored sleeve to go over them .

Sent from my SM-A115A using Tapatalk

 

I know this is "off the wall" but MY big complaint is these stupid white things shoot up from the roof looking . . . bad. They contrast sharply with the roof color and stick out. Just my opinion here, but Geez, can't the plumber paint these things to match the roof color?!

 

That would take a special paint, formulated to adhere to P V C.

Yes they make such a paint.

Plumber, probably not, but a roofing expert maybe.


ED

 

Need to be careful to not create a place for a wasp nest.

 

Yes those paper wasps, sure make big nests, that could plug one.


ED

 

They make vent stack caps.

 

There are plastic National Pipe Straight Hose thread drafting hose suction strainers which will thread on to any metal pipe thread size by using an increasing bushing. On plastic vent pipes you would need to put a thread adapter to screw the suction strainer to. I would be easier to cut holes in a section of pipe using a hole saw, cover the cylinder with 1/4 inch gridded hardware cloth banded with stainless steel worm gear clamps. A blind cap at the end and your done.

They make vent stack caps.

I think that I would prefer the vent cap suggested by jacksplumbingvideos though. The only place I would see the need for a drafting strainer is if you were dealing with rodent entry via the vents. Drafting strainers have minimum water flow openings of twice the cross section of the hose or pipe which it is made to protect against the entry of foreign objects into the pump the drafting hose is connected to.

 

A while ago I spent some time researching why plumbing vents are typically open-ended. The best rationale that I could find was that, unlike every other potential vent on the roof, the stuff connected to a plumbing vent won’t be affected by the rain and snow that could go into it. And every other style of termination for a plumbing vent is less good at handling snow and freezing temperatures.

After dealing with:

• Mice that were transiting into the house via a u-shaped underground electrical conduit which probably had water in it, and;
• A rat infestation in the attic getting in through a chewed garage door bottom sea, and;
• A bird that for some reason fell into our fireplace chimney while it was not in use (fortunately I was there at the time and heard the racket);

…I decided that it would be prudent to what I could to prevent “unauthorized entry” at any point into the house, so I soldered a galvanized metal screen to the lead cap on the plumbing stack.

Chris

 

well when we moved here, the house had sat empty for a couple years, and yes the birds clogged all the vent pipes, our furnace one was packed full of bird nest debris. We also had a bird nest clog our downspout gutter last summer, and was leaking behind the sheetrock and we didn't know it until major damage. When we took it all apart it had a dead bird in it, don't know how why it died, it was a grown bird not a baby. Must be an awful way to go. Anyway, now we will be installing gutter guard of some type after our new siding goes on this summer.

 

Is there a reason why plumbing vent pipes that stick through a roof don't have a cap on them?

Seems like a problem waiting to happen if a bird lands on it, get's overcome by the sewer gas and falls into the pipe.

Vents provide air, so your traps in the house do not lose the water seal and allow sewer gas into your living quarters.

 

There not covered because they need the air flow passing over the top of the pipe to draw out the sewer gases.
That's why there's codes on how high they have to be above the roof line, so they get full air flow.

 

Vent caps are available and are easy to install, in sizes from 1-1/2" and up.
Builders usually provide caps for large vents, like kitchen hood and gas water heater,

 

Or some kind of mushroom style vent cap?

 

I have heard of squirrels getting lodged inside a vent pipe, creating a slow draining system.

Until a " roto- rooter" gets up there and snakes the carcass out.

If you wanted to, you could fashion a cover , similar to those attic vents that spin in a breeze, but smaller, to fit the pipe.

ED

 

Depending on the climate, ice could accrete on a screen from warm, moist air rising in the vent hitting cold outside air.

 

If that happened the bird would just fall into the sewer. Well, it might get stuck at a 90 for a few years, but eventually it would decompose enough for it to finish it's slide into your underground poop pipes. Not an issue.

 

Not needed in most places. Maybe in Florida yes, they have lots of critters that can get in everywhere.

Imo, It's probably not a good idea, but you can put screens on them if you want to, no problem. Especially if your under a lot of trees, etc.

Just be careful the screens don't get clogged up with leaves, pine needles, etc., and block your vent. Use something that has big holes not small close together holes.

 

Is there a reason why plumbing vent pipes that stick through a roof don't have a cap on them?

Seems like a problem waiting to happen if a bird lands on it, get's overcome by the sewer gas and falls into the pipe.

Not sure I have ever seen or heard of that happening. Maybe the gases venting out keep them away.