Plastic vent pipe was replaced with copper to extend along the outside of the house up through the roof. Why is a different story, let’s not go there.
The original hole was sized for the plastic, so now there’s 1/2″ to 3/4″ gap around the copper pipe. The question is how to seal the hole? It’s asbestos-shingled on the outside.
Any suggestions?
Thanks,
Rebeccah
Replies
Can you remove the peice of siding? If so, you could make a tight fitting hole in a peice of 12"x12" 16oz copper and fit it around the pipe and solder it tight. then put the siding back on over the flashing.
Hydrolic cement. Dries in a few min. so work fast. Bondo or epoxy will also work well.
The cement could be grooved to amtch the siding and painted for a dead match.
Edited 2/21/2007 5:26 pm ET by AllTrade
It depends on how much you care about how it looks. If the answer is "not much," then use Garnder Bender Duct Seal compound. It's this stuff that is sold in a dark gray brick, wrapped in plastic. It's a dense but moldable and very sticky putty that electricians often use to seal up service entrances and other penetrations like that.
Look here, about 2/3 the way down the page:
http://www.gardnerbender.com/Products/Catalog/Wire/Management.shtml
Thanks, guys.Rebeccah
seal the gap with expanding foam and cover it with a disc (cut in half to fit around the pipe) seal the disc and paint it.
semar is right - and I've seen plumbing escutcheons that are already hinged - you might even find one in copper.
Greg
Hinged escutchions called "floor flanges" are available for copper pipe sizes at your plumbing supplyer. They generally are chrome plated and they rust quickly so you would need to caulk and paint well but the look would be clean and good enough to remedy your situation.
You cannot work hard enough to make up for a sloppy estimate.