Sitework & Property Services

Drainage & WaterproofingKeep Water Where It Belongs.

Grading, drainage and waterproofing that solve water problems at the source.

We find the cause and fix it properly.

  • French drains & subsurface drainage
  • Foundation & basement waterproofing
  • Downspout & runoff management
Our work

Drainage & Waterproofing Work

Illustrative images of the work this service covers.

Fabric-wrapped perforated drain pipe in a gravel trench along the foundation of a cedar-shingled house
French Drain — Perforated pipe in clean stone, wrapped in filter fabric. (Illustrative image)
An excavated concrete foundation wall coated in black waterproofing with dimpled drainage board and a footing drain
Foundation Waterproofing — Membrane, drainage board and a footing drain on an exposed foundation. (Illustrative image)
A downspout piped underground to a new concrete dry well beside a shingled house
Downspout & Dry Well — Roof runoff piped away from the house into a dry well. (Illustrative image)

What we do

Grading, drainage, foundation waterproofing, French drains and basement water issues — solved at the source.

Why Green Island: We treat water problems as construction problems — finding the cause and fixing it properly.

What's included

  • Grading and surface drainage
  • French drains and subsurface drainage
  • Foundation waterproofing
  • Basement waterproofing and water issues
  • Downspout and runoff management
  • Coordination with foundation repair and interior finishing

How we approach the work

  1. Conversation and site visit — we learn the property, the goals and the constraints.
  2. Clear scope — what is included, what still needs to be decided and what information we need.
  3. Scheduled, coordinated work — one team managing the phases in the right order.
  4. Walk-through and follow-up — we finish what we start and stand behind it.
Related projects

See our project portfolio

Browse photographs of Green Island's own work across all four service categories.

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Client review

What clients say about Green Island

"Reliable, knowledgeable and friendly service. Did a great job and would not hesitate to hire them again for future projects."

VC
Verified Client
Edgartown, MA
Service area

Serving Cape Cod, Martha's Vineyard, Nantucket & the South Shore of Massachusetts

Proudly based in Edgartown, Massachusetts.

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