DIY Home Improvement Forum banner

Installing Vinyl Siding

3K views 3 replies 4 participants last post by  troubleseeker 
#1 ·
I have a question to anyone who may know. I am putting new vinyl siding on an addition, around the garage door it was trimmed out in treated wood. My sider is telling me that he cannot wrap vinyl siding around the opening becase on the acid in treated wood. Is this correct and what can be done because the garage looks unfinished.

Help a new member.
 
#3 · (Edited)
This is true. However, what your sider is referring to is not wrapping the PT trim with vinyl. He is referring to the 'colored' aluminum that is bent and installed over the trim work.
Aluminum has a chemical reaction with the treatment chemicals of the current treated lumber.

Links:

http://ezinearticles.com/?Building-With-Pressure-Treated-Lumber?--Know-The-Rules!&id=239136

http://www.toolsofthetrade.net/articles/showarticle.asp?articleID=2115&position=0&type=article

The previous advise to rip off the PT installed trim work and use PVC composite is right on and would be appropriate, as these areas ALWAYS tend to rot (Moisture and 'wicking') In some states these lower garage jamb areas are required to be a ''durable'' or ''treated'' wood product.

As stated, an alternative to using PT wood that will not rot on the lower areas would be to install a composite material (PVC). You could install 3/4" trim stock and double layer it (gaining the 1 1/2" thickness). To spend less, you could install the composite from the 2'-3' height down-to the grade level, and use regular KD grade lumber on the upper areas.
 
#4 ·
I don't have any experience with using the pvc coil stock to wrap trim as my siding man always uses aluminum coil. And the warning is well heeded. Even the "old" pt chemicals would corrode through the aluminum coil stock, the new ACQ products are devastating to the thin coil stock. For lack of a better solution, I just cut the wood build outs about 1/8" short and seal the end grain by smearing polyurethane caulk onto it.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top