How To Install Multiple Corner Posts For Vinyl Siding

Suggestions so far have been.

How to install multiple corner posts for vinyl siding.

This seems to defeat the purpose of vinyl exterior. Place the corner post in position allowing a 1 4 6 4mm gap between the top of the post and the eave or soffit. Each corner should be hung straight so drop a plumb line for each corner post. Hammer the first nail into the nailing slot.

This just doesn t look right. To seal the edge of a siding panel where it has been cut and to secure it to the wall you can use under sill trim. Corner posts above the roofline are a notorious source of water infiltration. Hold the corner post up a bit and run the j channel beneath it instead.

Expansionwhen the temperature changes vinyl siding expands and contracts. Any help is. I am using vinyl siding. Is there a 45 degree trim corner made.

If you are going to install siding vertically on the dormer i guess you would use j channel at the bottom and top and as far as i can see yes you d probably need to notch either the end of the j channel or the corner post where the j channel runs into it to allow water to drain out. Keep ends of adjoining starter strips at least 1 4 inch apart to allow for expansion. Use two j channels. Trim out with wood.

When installing the starter strips allow a 1 8 inch space for corner posts and j channels for expansion. Nail in the center of the nailing slots. The corner post hangs from these nails. The way to allow for this expansion is to install the corner post down from the soffit or top of the corner.

If a corner post is installed tight to the shingles and the j channel dead ends into it any water that runs down the j channel will back up at the post and may find its way into the house. This video shows how to install certainteed outside corner posts for vinyl siding.