I installing new construction Pella casement windows with nailing fins. I was told by Pella that all I need to do to fasten then is to nail the nailing fin with 2 ” roofing nails. Is that enough to hold a window? One unit is 9 feet wide. They said not to nail thru the side jams inside.
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Simply put, yes, it is enough.
Richie
Be sure you check with them on their Detail regarding a Vykor type flashing over the nailing flange. The supplier sent one out this spring. I'm not remembering if this detail had anything to do with the warranty. I have had remodel situations where I have used their mounting clips, no flange. This system worked well for the application I used it on. Just a cpl months ago, had an installation where neither the flange nor clips would work, fastened totally through the jambs on these. I fastened with finish screws at the location of the screen channel. Be carefull on the side with the locking mechanism. The top hook connects to the bottom hook and latch by a rod that runs up from the pivot point.
Shimming is important, evidently nailing through the jambs is not.
Remodeling Contractor just outside the Glass City.
Quittin' Time
are you talking about the foil faced, super sticky tape they send with the windows now?
we call it "pella tape" I have no idea what technical name is for it.
Last I heard, and this was about 6 months ago at a lunch the local store threw, was the tape would soon become necessary to keep the warranty in all new construction applications. The local guys weren't sure what implications there would be for retrofit applications.
yessir, sort of. Vycor plus flashing (6"x 75'-23.00) is peel and stick, a thinner version than ice and water so it doesn't build up the area around the flange. It is not silver, but black smooth shiney skin with w.r.grace written on it. Tyvek has one that is 4" but is super $'s (4"xmaybe 150-120.00).
I thought is was mentioned in the same breath as warranty. Here I don't know, they may send it out with an order, I didn't get it with my non flanged 9,000.00 order. I had heard that pella's was expensive, whatever that means.
How many days and counting?Remodeling Contractor just outside the Glass City.
Quittin' Time
60 ish days, lost count a while back and gave up.
Out here Pella "gives" us the tape, I don't know if they do it for everyone, but we order enough windows from them to keep them happy.
The "pella tape" is about 4" wide, there's enough tape on a role to do ~2-3 windows give or take depending on actual size.
With the tape over the flange you don't need to goop the heck out of in back of the flange with caulk so it makes for a little cleaner install.
I had a copy of the instructions they gave us way back when and just looked at pellas web site
I've been to a couple of their lunch/lectures and installed a good number of pella windows, any time I've been able to use the flange I've never, nor have I seen anyone else recommend nailing through the jamb.
yup, you're right on no nail through jamb in new construction. Funny how the "new" pella technology follows along the line of how some have been doing it to properly install a flashing arrangement. I think I first came upon the use of the precursor of pella tape in the late 70's when we were shown a "new" way by a guy I worked for. He was using strips of bituthane around the flanges. Something he learned or picked up doing timberframes. They were using it to seal the seams in the stress skins on the roofs and if I remember correctly, the walls as well. It beat tar paper, but the downside was it's thickness. As far as remodels........whatever works, doesn't compromise the product and securely fastens the unit. Cripes, I wish I had a big enough brain to soak up all the knowledge to do things right. Add to that seeing all the causes for failure I've uncovered on almost every remodel. There's just not enough room in this 6-7/8's skull to remember it all. Remodeling Contractor just outside the Glass City.
Quittin' Time
No that is not enough. Check the instuctions that come with the casements or ask the dealer for the Architectural Manual. Pella has long perscribed that their windows, especially casements, because they tend to drag under their own weight, need to be shimmed. Or easier, go to Pella.com.