Installing wall vent cap for bath exhaust fan

[Ray_S]

Hi there, I have a question regarding vent cap install on exterior wood siding as seen in the picture. The 6" vent cap is for a new bathroom exhaust fan and made of galvinized steel. The problem is there is no holes round edge of the cap so I can't use screws to secure it onto the wall siding. Is caulking along enough? if is what type of caulk or adhesive would be good for this. Should I nail through the metal flashing to secure it? Thanks.

Ray

 

[nealtw]

Maybe this will help. I would predrill and use stainless screws
http://www.thisoldhouse.com/toh/video/0,,1630938,00.html

 

[PangioneDevelopers]

Hello

Remove vent
Predrill corner holes then screw to wall
Since you are installing above the siding, make sure you apply a good caulking before you press and screw to the wall
Pangione Developers Inc

 

[bryce]

"Should I nail through the metal flashing to secure it?"

depends on what's behind the siding. Could be a electrical wire, maybe foam, brick?

Try to glue it, if it works - don't worry.

 

[PangioneDevelopers]

Yes,
predrill the corner holes
screw to the wall