To put a roof on kennels or not.

[Nut]

Roofing.

The whole idea of a pen is shelter ... and so if there's no 'shelter' from the elements, then all you've provided is a cage ...

Yes. But don't forget chains are no option here.

I always have and and had roofs on my kennels and its not like they go outside of their doghouses when it rains. Its just when I arrive or when they have to take a shit or drink.

In the summer they could benefit from no roofing.