One of the last steps before installing vinyl siding panels is trimming around all sides of windows and doors with J-channel (aka “J”). This channel hides the cut edges of the siding where it …

Ply Gem offers vinyl trim designed to protect & add a finishing touch to windows, doors & corners. Browse our selection to find the best fit for your home.

To refresh your home and put the finishing touches on your siding, vinyl siding trim is essential. These joiner pieces make your siding look great and protect your home against the elements. Common types of vinyl trim include J-channels, F-trim, H-trim and undersill vinyl window trim, as well as outside and inside corner posts.

A common window trim for vinyl siding is the super J trim, a wider J channel that can be used to trim doors and windows. Another type of window trim is the deep pocket J trim, which typically measures 1½ inches wide and works as trim for both doors and windows.

The AZEK J-Channel Trim Series is engineered to integrate flawlessly with a wide range of siding materials—including vinyl, PVC, fiber cement, and wood composites—these products offer a seamless transition that enhances any architectural style.

Explore window trim options for vinyl siding: Learn about materials, installation tips, and maintenance practices for lasting appeal and protection.

Ply Gem offers a wide selection of easy-to-install vinyl trim and moulding to meet your specific needs. From elegant mantels to crown mouldings to crisp corner posts, trim adds the finishing touch to your home’s exterior. Ply Gem’s vinyl exterior trim & moulding is durable and virtually maintenance-free.

Plygem Vinyl Finish Trim, also known as Undersill Trim, is used to hold the top row of siding in place, near the roof line or under windows. It is a necessary accessory for any siding job. Plygem accessories are designed to withstand the toughest weather and retain their beauty and color, year after year. Does this come in a wood grain finish?

Whatever your home’s siding, beautifully trimmed windows and doors add value and curb appeal. Casings are functional, too, helping to keep out water and insects. Easy to install and maintain, Ply Gem’s vinyl casings come in a variety of smooth and fluted designs that look like real wood but lasts for years.

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