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add window in metal siding

dug's picture

Looking for advice on the best way to add windows in a metal building.


Framing is 2 x 4 studs set behind the approx. 8" horizontal purlins. Siding is 26 ga. corragated panels. Approx. 2" ribs in siding


 Building manufacturer is Tyson; will try to contract them tomorrow. Just wondering about flashing details, window recommendations ( double hung wood inside clad outside is all client request )


I know the jambs will have to be extended but I'm trying to wrap my head around what kind of exterior trim to order on the windows and exactly how to fasten them


  Thanks,  dug


 

(post #104636, reply #1 of 13)

Siding is 26 ga. corragated panels. Approx. 2" ribs in siding


Nailed or screwed?


Easiest is to remove the siding, frame the opening, install the window, flashing, tjen reinstall the siding with a J channel wrap around the window. Not a dificult job if the siding is srewed on the purlins. Tougher if it is nailed on with ring shank washer nails because you need to be carefull not dent the siding  when pulling the nails.


Order a standard double hung clad window with nailing flanges.


 


Dave

(post #104636, reply #3 of 13)

I believe purlins are in the roof and girts are in the walls. They are the same thing but in different locations. A 2x4 can be a stud or a rafter.


It's been years since i heard the word purlin and then I thought of girts. I could be wrong by I think not:)


 


roger

(post #104636, reply #8 of 13)

You are correct with the nomenclature. I just find it easier to use the op original terms when making a reply.  Saves a little time not being picky over terminology. Like you said, they both serve the same function, hold the steel in place.


 


Dave

(post #104636, reply #10 of 13)

You're right. I re-read dug's original message and saw purlin ( hadn't noticed in his, just yours). I should have made the reply to him.


 You and I might know the difference between a girt and a purlin but this forum is all about learning. Which is why I'm on the darn site all the time. I'm always saying to myself after reading something "damn, I didn't know that".  It makes my day. Of course I might not remember it after ;).


 


roger

(post #104636, reply #2 of 13)

How'd you decide to handle it?




sobriety is the root cause of dementia.   

 

(post #104636, reply #4 of 13)

Rez,


    The plan is to build a box out of 2"x12" around the jamb of the windows. We have ordered windows with a nailing flange that sticks out past the exterior trim by 1 1/4''.


   We framed our R.O. 3" larger than normal all the way around to accomodate the thickness of the 2" x 12" box.


  We are planing to nail the flange of the windows onto the box then the windows will be slid into the R.O. from the inside out and through the hole in the metal that will be "surgically" cut in the metal siding just big enough to accept the trim plus head flashing and j flashing.


  The window box will be fastened to the studs and cantilevered out to metal siding.


  Jambs will be extended and cased out as neccesary.


  8 of the 10 windows we have to add will have a porch roof over them so hopefully by the time we get to the last 2 we have a good system worked out.


  What cha think? Im still open for advice. I'll keep ya posted how this works out when the windows come in.


   dug

(post #104636, reply #5 of 13)

Yes, a little touch of the how-to for a brain operation ever now and then will keep you on your toes. Sounds right.


I was recalling a few years back dealing with a metal commercial building where a vinyl was to replace ye ol' aluminum slider window.


The way the wall and window had been constructed together was a cause for some real headscratchin' to be able to pull it off.


yep, both the project and the window. snorK*




sobriety is the root cause of dementia.   

 

(post #104636, reply #6 of 13)

Rez,


   Stay tuned, up next comes 2 sets of residential french doors to replace the double metal doors.


  We're building 1800s.f. of living quarters inside of a gaint metal barn. Spectacular site high on a bluff overlooking the river and several hundred acres of pasture,  hence all the glass.


  This is a fun job, and ya could'nt ask for a nicer homeowner.


  dug

(post #104636, reply #7 of 13)

some guys get all the breaks



sobriety is the root cause of dementia.   

 

(post #104636, reply #9 of 13)

   The plan is to build a box out of 2"x12" around the jamb of the windows. We have ordered windows with a nailing flange that sticks out past the exterior trim by 1 1/4''.


 


Good plan, but you will find that getting the j channel and flashing slipped in a major PITA. Same thing with getting to the nailing flanges with the metal " surgically cut" to the outside measurements of the window.


Let us know how you get along with the project. Sounds like an interesting job.


 


Dave

(post #104636, reply #11 of 13)

Good plan, but you will find that getting the j channel and flashing slipped in a major PITA. Same thing with getting to the nailing flanges with the metal " surgically cut" to the outside measurements of the window.


   Dave,


   I was planning to nail the window to the box through the nailing flange 1st and then slip the flashings on the metal opening  2nd and then slip the window/ box combination through the opening from the inside of the building.


  Windows should be here in about a week, so I got a little time to think this through if ya got any better ideas.


Never done this before but I think it will work.


   dug

(post #104636, reply #12 of 13)

I have never tried it that way. Could work.


Let me know how it goes. Could be another usefull method to add to the bag of tricks.


 


Dave

(post #104636, reply #13 of 13)

Any chance for some pics of the process when you start?


at 4 bucks a pill and I didn't last four hours
I want my money back!

sobriety is the root cause of dementia.