Caulking and painting treated window trim

[Sh40674]

Replacing my picture window this week. All my other windows I've been lucky and the wood has been in good shape, but I found a small amount of rot on the trim that the picture window rests on. Obviously I'll want to use treated wood (or could i use cedar?). So I'll need to caulk the window right away... any issues with caulking treated wood? I'm using OSI quad Max caulk. Our local hardware store has some treated wood that always seems real dry, stored inside and they don't sell much. Go with that option?

As far as painting, just wait until the wood is dry? Or is it good to go? This is all exterior wood

 

[Sh40674]

Anyone?

 

[TRWham]

Unless the rest of the house is cedar trim, don't use PT or cedar, use PVC for rot resistant trim.

 

[Tejay]

Treated wood has always been a PIA for me so I quit using it.-constant shrinkage problems even it it feels dry. I would much prefer cedar but make sure you prime it with an oil based product and then whatever paint you choose. Tannins in cedar will always come to the surface despite what the paint store tells you about how wonderful their product is. Prime and first coat before install. Caulking and finish coats after.

 

[CTyankee]

Unless the rest of the house is cedar trim, don't use PT or cedar, use PVC for rot resistant trim.

This.

 

[ishiboo]

Cheaper than PVC and just as easy to work with is Miratec. I believe it's a composite made with cedar.

 

[PassnThru]

I wouldn't use pressure treated either - it will shrink and that's bad on a window. If you think about it, you only need pressure treated for ground contact and exposed unpainted wood. Put a good coat of paint on some pine and call it a day. If you maintain it your kids wont have to fix it before they sell the house

 

[dfiler2]

If it's a small spot, repair it with an epoxy wood consolidant. As long as you can get to and remove all the rot, this works well.

https://www.amazon.com/dp/B01M12ZCVM/?tag=atomicindus08-20

 

[rburke65]

I used cedar to replace two rotting sills on side lights of the front door. Had then cut on a bevel to shed the water, oil prime all 6 sides and paint all 6 sides. Installed, caulk and paint again. Hopefully I'm done forever with that job.

 

[Sh40674]

I wouldn't use pressure treated either - it will shrink and that's bad on a window. If you think about it, you only need pressure treated for ground contact and exposed unpainted wood. Put a good coat of paint on some pine and call it a day. If you maintain it your kids wont have to fix it before they sell the house

This is something I've considered is just using standard lumber. I figured using treated because that's what I'm reading, but I don't ever see a house woth treated wood.

I may do this.

If not, how is the pvc trim secured?

 

[Moto]

PVC trim boards are nailed up, as you would with wood.

Something to note is that PVC expands a bit with temperature changes. It can be an issue if it is south facing and painted a dark color.

Also, the PVC boards are just for trim, not for structural uses. I don't know if they would be good enough to support the weight of your window.

 

[SALIV8]

Replacing my picture window this week. All my other windows I've been lucky and the wood has been in good shape, but I found a small amount of rot on the trim that the picture window rests on. Obviously I'll want to use treated wood (or could i use cedar?). So I'll need to caulk the window right away... any issues with caulking treated wood? I'm using OSI quad Max caulk. Our local hardware store has some treated wood that always seems real dry, stored inside and they don't sell much. Go with that option?

As far as painting, just wait until the wood is dry? Or is it good to go? This is all exterior wood

I have decorative finished aluminum trim covering any wood around the windows. After the aluminum is formed, then caulk around the aluminum.

 

[Sh40674]

I have decorative finished aluminum trim covering any wood around the windows. After the aluminum is formed, then caulk around the aluminum.

This will be for the trim/stops that the window butts up against on the exterior. The trim beyond that is already capped, and appears the wood is good underneath so I plan on leaving it alone. I'm going to repaint the capping as it's getting chalky in some spots, which will let me match it to the wood as well