I have trimmed a bunch of windows out like that. I did however, install the windows correctly.

Not much difference between what they are doing compared to just nailing up some J and slapping the siding up.

 

I'm glad to here its something you have done. By installing the windows correctly I assume you're probably talking about a different methrod with the house wrap?

Did you glue your joints on the pvc?

How about caulking on the inside edge between the window and 1x?

I'd love to see some pictures if you've got any?

I'm remodelling my own house, the guy doing the work on this other job thinks it would look great on mine. (Victorian Era) I have to agree, I'm just not sure how much I like the method. Seems like there will be a lot of water running down that wall over the house wrap.

I'm with you Randy, I think I would have to see a piece of aluminum bent and inserted in the top channel if it were mine...

 

The thing I would be concerned with is the amount of water coming down on the ply at the top, even if it is treated, if not flashed or caulked. Warren I do think J provides more water sheding if done right at least with the type of materials I have used.

 

I use a lot of Miratec like that. I use the 1" and usually rabbet it out to let the siding tuck in. 1" usually gets it. You can get pvc in 1" too.

I miter the corners, couple pocket screws, some exterior adhesive caulk on the miter, screw it together and let them dry for 30 minutes. I install them in one piece with hand full of Grk trim screws, or the cortex one's on pvc.

 

What is your rabbet dimension?

It looks like out kleer is about 15/16ish... I like the idea of glueing and pocket screwing the miters. I've been looking around the net but havent been able to find pictures of what I'm look to do. If anyone has any past work pics I'd love to see what it looks like.

With a double hung window and wide trim it really keeps the era where it should be on an older style home. That is what I am trying to accomplish with mine.

 

if we acknowledge that trim is not the primary water barrier and pvc is free from deteriorating from trapped moisture there are a lot of trim installation methods that open up themselves to us

but you need bullet proof flashing and water diverting details
and you need to completely remove the wood,pressure treated or not thats going to soak in water from all around
use a packing thats as durable as the trim

 

Looks nice Tom, How do you keep the water from behind the trim , and water not running behind the siding? Are you caulking the back side before installing?

 

There are many ways to trim out a window with pvc ,when i install it the way you described it you can pad it out with treated 1x4 or 1x6 ripped to the thickness of an aluminum j. I like to caulk the exposed edge of the 1x for good measure. I then tuck the alum j in the slot. When i do it this way i use a sheet of 3/8 x 4x8 azek ,this way you have a thickness of 3/8 compared to 3/4.The only logical reason to do it this way is to save $$ on material ,otherwise 5/4 material is the way to go,much faster.

 

it's hard to tell from the pic but that window has an aluminum drip cap installed directly on the window that is integrated into the house wrap

water will always get behind siding,the trick is getting it to drain to daylight quickly

i would not use that ''overlay'' detail with any thing but pvc trim and siding

 

I always pack the wall with PVC, then use an aluminum L for drainage. Above the flashing, either the paper is slit to receive a counterflashing, or another layer of felt is applied over the flashing.

In the case of the entry door, I rabbeted 5/4 x 4 to give the same appearance as window lineal. The corner boards are 1x10 with a 1x overlay to give the recessed panel look and provide the siding lap.

 

That bottom piece of flashing is so crucial. The amazing thing is that will all the siding and windows that I've tore out I can only recall one time that there was any flashing that would take the water up over the top edge of that siding. Thanks for the picks.

 

Good thread. I've only worked with one other guy who can install windows the same way twice. :blink:

 

some simple things you can do to help reduce the moisture ''pressure'' behind the siding

 

I have been using a lot more of that tape to seal things up any more works nice. Just did a steel roof and hand nailed the underlayment and taped all the seams with it. We have lots of wind.