Rooftop Garden Installation in Charlestown, MA

Most of the roof decks we work on in Charlestown sit atop 19th-century row houses on Bunker Hill, Monument Square, or the streets running down toward City Square — three and four stories, party walls on both sides, and a stairwell that was never built with a roof garden in mind. That single fact shapes the whole project before we get to design. Soil, containers, planters, and hardscape materials have to be sized for a hand carry up narrow interior stairs, staged through a roof hatch, or lifted by crane over the roofline when the load or the access won’t allow anything else. We plan the logistics before we plan the plant list, because on these buildings the logistics usually decide what’s possible.
Exposure is the second variable, and it changes block to block. A deck facing the harbor toward the Navy Yard gets strong, unbroken afternoon sun and wind that has picked up salt on the way in — that combination is hard on foliage, hard on fasteners, and hard on anything not rated for a marine environment. A deck tucked between taller party walls a few streets back gets a fraction of that light and almost none of the wind, which calls for a different palette entirely and a different irrigation schedule. We read each roof on its own terms rather than applying a single Charlestown plant list to every address.
Then there’s what the building itself can carry. Many of these roofs were never engineered for a garden — they were engineered for a person to walk across occasionally to check the flashing. Growing medium, container weight, and hardscape all have to stay inside a load the structure can actually bear, and on older roof decks we’ll bring in a structural engineer before we finalize a plan rather than after. Finally, anything visible from the street — railings, tall planters, pergolas, lighting fixtures above the parapet line — falls under Historic District Commission review. We design for that review from the first sketch, not as a fix after a submission gets sent back.