We've made the world's
best roof even better

No other beats slate as a roofing material.
Here's why you should install a slate roof
using the nu-lok roofing system:

Nu-Lok is the world’s only
walkable slate roof!
Nu-lok provides a dramatically improved way to install a natural or ceramic slate roof . . .learn more.
There's less slate, less weight and easier installation with the Nu-lok system design.
Nu-Lok uses premium components that are designed to last, taking advantage of the longevity of slate. See our 50 year warranty.
Tested and proven -- meets and exceeds building code standards. See the details.
Installed on homes and buildings worldwide. Click here to find a contractor.
Nu-Lok USA slate roofs are provided with genuine Greenstone Vermont Architectural Roofing Slate.