11.   He said city officials were aware the roof had problems before the renovation, but it apparently got worse.

12.   If the doors to the kennel are closable, then you can add soffit vents if the roof has any kind of an overhang.

13.   If your roof has a gentle slope, you may be able to climb on the roof to clean the gutters.

14.   If that is so, you can put a ridge vent on any ridge the roof might have.

15.   If the roof already has an aluminum drip edge, the ice breakers can go on top of that.

16.   Q. My new roof has moss on one of the slopes.

17.   Q. My roof has one layer of asphalt shingles.

18.   Since you mentioned that the structure is a shed, I must assume the roof has only one slope.

19.   The original canvas roof has long since been replaced with acrylic, but the desired effect is much the same.

20.   The roof has a large overhang, so it is possible to ventilate that space.