how many vents would they need for 8x12 shed/coop ?

[MamaChic21]

I'm in the process of ordering a 8x12 shed/chicken coop and it comes with 2 windows. How many vents do I need ? Should I order with addition 2 more windows on the side of the shed too ? I have total of 25 birds (including 3 ducks, the rest is roosters and hens)

 

[journey11]

Does it have any vents in the peak of the roof? Hot air rises, so you'd want at least one up there to keep the air moving. You could partially close it to help them stay warm in the winter, but you still need a little airflow. Stagnant, moist air and the smell of the ammonia in their poo (if you let it build up) can make them sick. You could have as many windows as you want and open and close them as needed, depending on the season. The extra light wouldn't be a bad thing either, to help encourage winter laying.

 

[MamaChic21]

http://www.mysheds.net/workshop.asp
It only comes with 2 windows and the vents are extra. It's an A framed shed so 2 vents will be ok for each side and posibly another window from the side. Would that be enough for them ?

 

[BooBear]

If it is the red one that you first see using your link I would add more ventalition. I noticed it does have small vents at the top at each end. But with just the 2 small windows on the front that will not be enough cross ventalition.

Try and see if you can get any BYCrs close to your area to send you pics of what they have to get more ideas for ventilation.
Where I live it gets very hot in the summer and we have mild winters so I use an open air coop style. Folks more north that have colder winters and milder summers tend to need more closed coops; however, good ventilation is still important.

 

[MamaChic21]

I called the company and the one on the website, the vents are just examples and it's only $20.00 extra for each vents. I have no problem with that.

 

[Cargo]

Here is Pat's great page on ventilation: https://www.backyardchickens.com/web/viewblog.php?id=1642-VENTILATION

In a nutshell you want a ton of ventilation that can be opened and closed as necessary.
Open fully in Summer and closed partially in Winter.

 

[elmo]

You probably won't want to leave windows open in winter because they're down low at roost level, so I wouldn't count on them for cold weather ventilation. A good rule of thumb is to build one square foot of vent per chicken. For 25 chickens, that's 25 square feet which is going to be rather difficult to obtain with those weeny little standard shed vents. You'd need a lot of them to get 25 square feet of vent! If you're at all handy, it might actually be easier to cut long rectangular openings high at the tops of the walls youself, then cover them with hardware cloth and awning style flaps.