When nailing 3 4 in thick trim use 15 gauge 2 1 2 in.
Nail trim to vinyl window.
If you are nailing trim on large vinyl jamb windows over 6 with southern exposure run a bead of carpenters glue down the backside of the casing to fasten it to the drywall.
Exterior window trim on vinyl siding if your home has vinyl siding and you d like to add vinyl window trim you will first need to remove the existing siding and j channel from around the windows.
Trim out the biggest windows first.
Brads for nailing to the jamb.
Nails for the framing and 18 gauge 2 in.
The nail needs to be long enough to go through the vinyl slot and into the wood window frame to a depth of at least 3 4 inch.
I m talking mostly about using hardi cedar or 5 4 trim nothing fancy.
However calculate your vinyl frame size before deciding on length.
For a general vinyl framing nail choose a 1 1 2 inch size.
Do the pros really rip the back side of the trim board by a blade to avoid the rocking.
Don t be shy with the hammer the trim will cover the hammer marks and you won t compromise the vapor barrier.
That way you can reuse miscuts for the smaller windows and not run out of material.
To prevent splitting avoid nailing closer than 2 in.
When the windows are assembled all four corners are melted welded together creating a sealed shell around the entire perimeter of the window.
Integral fins are only found on vinyl windows.
Combine this 3 4 inch with the width of your vinyl windows for an estimated nail length.