What are the white PVC pipes on my roof?

Just as drain pipes remove water and waste from your home, the plumbing vent pipe – also known as a plumbing air vent – removes gas and odors. It also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes. … The vent stack is the pipe leading to the main roof vent.

What are the white pipes on my roof?

What are those pipes sticking out of your roof? … Pipe vents provide air a way into waste pipes to prevent siphoning of plumbing traps. The vents also allow gases to safely escape through the roof. Without the venting, the sewage gas would leak through the water in the plumbing trap.

What are the tubes coming out of my roof?

One of the most important and easily recognizable pipes coming out of your roof is the plumbing vent or vent stack. … Plumbing vents are designed to work in conjunction with your home’s drain system. The vents bring fresh air into the plumbing system which allows water to flow easily through the drain pipes.

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What are the PVC pipes in my attic?

The stink pipe, just like just about everyone else’s here is a PVC pipe that vents straight up with no cap or cover to stop rain from going into it. The stack (stink pipe) goes down to your sewer line so water going into it is not a problem.

What are the different pipes on the roof?

Even though you see nine vents here, there are really only five different types.

  • Number 1 is a plumbing stack vent. …
  • Number 2 is a vent for an exhaust fan like those found in bathrooms and laundry rooms. …
  • Number 3 is a vent for an attic space, called a “roof vent” or “turtle vent.” They release hot air from the attic.

Do plumbing vents have to go through the roof?

The answer is, no, plumbing vents do not have to go through the roof. While roof stacks are the most common form of plumbing vents, you can run a plumbing vent through an exterior wall. The stipulation is that the plumbing vent has to run higher than the highest window of the house.

What type of roof vents are best?

In most cases, we recommend soffit vents for intake and a ridge vent for exhaust. For homes that cannot have a ridge vent, box vents are generally the second best option for exhaust. And for homes that cannot have soffit ventilation, you will find that fascia vents to be your second best bet.

How many roof vents should you have?

How Many Vents Do I Need? The general rule of thumb in these situations is of roughly one vent per every 300 square feet of attic area if the attic has a vapor barrier. If not, there should be one vent for every 150 square feet. You will need to have 1 square foot of vent area for every 150 square feet of attic space.

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What are the vents on the roof called?

Static roof vents, also known as roof louvers, are designed to fit into the highest peaks of a roof and rely on wind to function. Gable vents are a type of louvered vent that can act as an intake or exhaust vent, depending on which way the wind is blowing.

Why do houses have vents on the roof?

The general purpose of attic ventilation is to keep attics cool in the summer and dry during the colder months. Encouraging natural air flow and circulation makes your home more comfortable by providing a way for hot, moist, or stale air to leave the house. Attic ventilation is important in both hot and cold climates.

Why would water pipes be in attic?

In many areas of the country where homes are built on a slab foundation, water supply lines are routinely routed through the attic space. Because most attics are unconditioned, a hard freeze that plunges attic temperatures into the mid-20s for any length of time can cause a burst pipe.

Why is there a drain pipe in my attic?

Plumbing Vents, Why Houses Need Them (forget the water bottle analogy) Plumbing vents protect plumbing traps. They don’t make fixtures drain faster; in fact, they do the opposite. … They’re those pipes sticking up out of the roof that run through the attic and through the rest of the house.

Are there pipes in the attic?

Vent Pipes Look Like Sewer Pipes

The first would be a bathroom or kitchen in that part of the house, and the other would be a pressurized drain system with pipes routed through the attic. Both are rare, but it’s common to find what looks like sewer pipes in the attic.

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What is an overflow pipe?

The overflow (also called the expansion/vent pipe) from a copper cylinder runs into the cold water feed and expansion tank in your loft. This pipe allows for the water in the cylinder to expand when it’s heated.

What are roof penetrations for?

The reasons for roof penetrations are numerous: roof vents, electrical conduit, utility pipes, satellite dishes, HVAC curbs, lightning protection.

Do water pipes run through the ceiling?

Water pipes can be run through the ceiling and I don’t think it’s all that unusual, but you have to be especially careful to avoid freezing because it can obviously cause more damage and more expensive damage than frozen water pipes in a crawlspace.

Roofs and roofing