The industry's most rigid vinyl siding keeps course lines straight, walls even.

Whether a project involves green wood or old wood, you get the flat, uniform lines of solid siding...because exclusive TriBeam™ reinforcement stiffens panels like no other vinyl siding.

Since we introduced Charter Oak, other manufacturers have tried to make an equally rigid siding. But in independent test, Charter Oak still leaves the competition sagging.*

*Based on average performance of premium-priced panels with wall thickness ranging from.042" to. 050". Ask for more details.

Withstands hurricane winds.

Charter Oak's advanced double-thick nail hem keeps panels tight to the wall, even in the shearing winds of catastrophic Category 5 hurricanes.*

*In independent tests, Charter Oak withstood winds simulating a Category 5 hurricane, the most destructive category of hurricanes tracked by the National Hurricane Center. Ask for details.

Easy, cost-effective installations.

Charter Oak is the market's only one-piece reinforced panel. No added inserts, no added weight. Charter Oak cuts with ordinary tools, goes up like a standard siding... and that keeps installation costs down.