aluminum blastgates

[Wade Lippman]

I just got some 6" from blastgateco. Quick shipping, great products....
But how do I attach steel duct?
Presumably I caulk the inside of the of the joint; but do I also put screws in?
Do I have to drill holes first?

[David Kumm]

Calk and self tapping sheet metal screws. I usually drill a pilot- when I'm feeling ambitious- because the screws will break- #6 for sure, #8 maybe. Dave

[Sam Layton]

HI Wade,

I used 3 pop rivets pre gate, and caulk.

Sam

[eugene thomas]

I would use the screw method. Easy to make changes if needed later.

[Rick Potter]

No caulk. Screws and aluminum tape (not duct tape).

Rick Potter

[Whit AndersonIL]

No caulk. Screws and aluminum tape (not duct tape).

Rick Potter

I recently moved. Caulked joints were very difficult to undo.

--Whit