Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-30-2008, 09:49 AM   #1
Newbie
 
Join Date: Sep 2008
Posts: 1
Share |
Default

aluminum coil is disintegrading


My contractor built a screened porch and put aluminum coil stock over pressure treated wood. Now it is disintegrating. From what I can figure out, he did something wrong in the application on the coil stock. He is willing to fix, but we're not sure how to go about this? He says that the original coil stock was painted on the inside, and this should have prevented the deterioration, but apparently in being bent, some of the paint seal was broken, thus leading to corrosion. Does this make sense? How do we go about replacing the areas that have corroded and prevent further corrosion short of ripping it all out and starting over? I'm not looking to place blame at this point, I just want the porch fixed!

gilbert123 is offline   Reply With Quote
Old 09-30-2008, 10:10 AM   #2
Member
 
Join Date: Sep 2008
Location: Portland, OR
Posts: 1,186
Default

aluminum coil is disintegrading


The chemicals in PT wood are toxic and don't get along with other metals well at all.

Putting 2 layers of roofing felt between metal and PT has always worked for me.

Marvin Gardens is offline   Reply With Quote
Old 09-30-2008, 10:19 AM   #3
the Musigician
 
DangerMouse's Avatar
 
Join Date: Jul 2008
Location: I'm right here!
Posts: 10,404
Default

aluminum coil is disintegrading


i'll be doing the same thing soon, would 50m poly work the same? (i have a huge roll) or Tyvek?

DM
DangerMouse is offline   Reply With Quote
Old 09-30-2008, 12:40 PM   #4
Mold!! Let's kill it!
 
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,833
Default

aluminum coil is disintegrading


The increased amount of copper in the newer ACQ treated lumber reacts with aluminum. The aluminum comes out the loser. You can use vinyl coil stock which is kind of a paint to work with. I've seen recommendations for installing a double layer of 6mil poly between the aluminum and the treated lumber. Make sure the builder used the proper fasteners and fittings for ACQ lumber too. It will destroy electro-plated galvanized screws and hangers too.
Maintenance 6 is offline   Reply With Quote
Old 09-30-2008, 01:25 PM   #5
Member
 
Join Date: Sep 2008
Location: Portland, OR
Posts: 1,186
Default

aluminum coil is disintegrading


Quote:
Originally Posted by MdangermouseM View Post
i'll be doing the same thing soon, would 50m poly work the same? (i have a huge roll) or Tyvek?

DM
I wouldn't use tyvek. Too flimsy. Need some bulk.
Marvin Gardens is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Evaporator coil for Goodman A/C leschuler HVAC 2 09-25-2008 12:43 PM
Replacing a 2 ton A coil with a N coil with TX valve englewood1 HVAC 7 09-11-2008 12:09 PM
Coil Aluminum murray11 General DIY Discussions 2 06-17-2006 12:42 AM
Siding: Aluminum vs. Vinyl Grumpy Remodeling 1 03-19-2005 12:55 PM
Siding: Aluminum vs. Vinyl Grumpy Remodeling 0 04-18-2004 03:35 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.