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-   -   Attaching trim to vinyl jamb extension (http://www.diychatroom.com/f104/attaching-trim-vinyl-jamb-extension-176810/)

n0c7 04-10-2013 10:56 PM

Attaching trim to vinyl jamb extension
 
I have two new windows with vinyl jamb extensions that I need to attach MDF casing to. How do I attach it closest to the reveal for a snug fit? Looking at other windows in my home it looks like the installers used a pneumatic nailer and just nailed into the vinyl jamb extensions??

oh'mike 04-11-2013 05:36 AM

We need more info---Is the vinyl extender solid or hollow? How deep? Is there any chance of the nails hitting the operating part of the window?

hand drive 04-11-2013 08:26 AM

a lot of times a brad nailer (pinner)is used along the edge where the trim meets the extension and a heavier nail is used to hold the trim to the wall or/and some adhesive used as well

Windows on Wash 04-11-2013 08:29 AM

Picture...

n0c7 04-11-2013 09:31 AM

Hollow, deep enough that nails won't hit or affect operation.

After wiggling the casings on my other windows it looks like the installers just pinned the casings into the vinyl. I'm thinking of using some adhesive with brad nails into the jamb extension and finish nails into the framing as mentioned.

I can take some pictures tonight.

Windows on Wash 04-11-2013 12:57 PM

Quote:

Originally Posted by n0c7 (Post 1156796)
Hollow, deep enough that nails won't hit or affect operation.

After wiggling the casings on my other windows it looks like the installers just pinned the casings into the vinyl. I'm thinking of using some adhesive with brad nails into the jamb extension and finish nails into the framing as mentioned.

I can take some pictures tonight.

This will work just fine.

I was suggesting pictures because they are usually worth a thousand words.

n0c7 04-11-2013 11:52 PM

Here are my existing windows:

http://i62.photobucket.com/albums/h8...psc4db1dde.jpg

Here are my new windows with jamb extensions:

http://i62.photobucket.com/albums/h8...psa88ba702.jpg

hand drive 04-12-2013 06:58 AM

the side you are showing is the outside, do not nail into hollow jamb extensions on the outside of structure. make sure window is shimmed correctly and only nail trim to solid wood surrounding window and use OSI Quad caulk to back caulk the trim where it goes over the extension. it is bad enough that they are hollow(bad theraml properties), adding holes in them is even worse....

n0c7 04-12-2013 10:28 AM

That's the interior shot. The nail flange is on the outside. It's two windows laying against each other - an optical illusion ;)


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