Our Slate proprietary Slate guard system developed for the US Navy to meet both historical and personnel protection requirements our guard systems prevent falling Slate from causing damage to property & injuries. We have options in Copper, brass, stainless, aluminum & steel depending on the needs of our clients.

Slate Copper St Patrick’s

A beautiful access with our 92’ Z Boom. Incredible equipment operating skill by Jonathan Salisbury Supervisor GDC Aerial Division 💪

Coppersmithing in Bow NH

GDC Slate awarded Slate & copper maintenance of historical Slate roof on St Patrick’s Church Nashua NH Awarded 2025

GDC will perform Slate maintenance, copper maintenance, carpentry & masonry in historical restoration of Jack Buckley Commons building...

Slate maintenance in progress on Squam Lake Holderness NH

Chester NH

Library project 2023

Newport NH. Richards Free library Historical restoration project awarded by warrant article 2023.

Historical restoration at the Centennial Hotel Concord NH

Time lapsed restoration at Pillsbury memorial hall Sutton NH

The unbelievable reach of our 92’ RXT System on display in Amherst NH

Installation of a new copper downspout on the Stevens Memorial building Chester NH during the painting project for historical restoration...

Painting the circumference of the turret on the Pillsbury memorial building historical restoration project Sutton NH

GDC did slate maintenance and copper gutter systems at Potter Place Station Awarded through Federal LCHIP

Newly award Town of Wilton Municipal building