Serving Sullivan’s Island, SC
Encapsulation, moisture control, and mold removal for the island’s historic and elevated homes — from Moultrieville and the Stations to the marsh-front streets near Fort Moultrie.
Sullivan’s Island pairs some of the most beautiful — and most moisture-exposed — homes in the Lowcountry. Many are historic “Island Houses” built between the 1830s and 1930s, sitting on original crawlspaces just feet above a high, tidal water table, surrounded by salt air on a barrier island only three miles long.
Crawlspace Cowboys is the local specialist Sullivan’s Island homeowners call when standing water, sagging insulation, musty smells, or visible mold show up in their crawlspace — and we make sure those problems don’t come back.
On a barrier island this low and this close to the water, crawlspaces face constant tidal moisture, salt-laden humidity, and water intrusion from heavy rain and high tides — which is exactly why so many historic homes here have been raised two feet or more. The island’s older homes in the Moultrieville Historic District and along the Stations were built long before vapor barriers or dehumidifiers existed, and their crawlspaces often still have bare dirt, failing piers, and decades of accumulated moisture damage. Newer and renovated homes near Fort Moultrie and Middle Street face the same salt-and-tide environment.
The result is the kind of slow damage you don’t see until it’s serious: condensation off ductwork, soaked insulation falling from the joists, mold spreading across original framing, and damp air pulled up into the living space the family actually breathes.
Every service we offer in Charleston, delivered with the same standards and the same warranty in Sullivan’s Island.
We’re local, and we respect what we’re working under — especially on a historic home where the framing is original and the repairs need to protect it, not damage it. We’ve worked across the island, from Moultrieville to the marsh front, and we know what an island crawlspace needs to survive salt, tide, and time: a sealed heavy-duty vapor barrier, a properly sized dehumidifier, real drainage, and careful structural repair where moisture has already done its work.
Crawlspace Cowboys is licensed and insured in South Carolina, and every job comes with a written scope, photo documentation before and after, and a free initial inspection so you know exactly what you’re paying for.
Call us or schedule online. We’ll come out, take photos, and give you a clear, honest report — even if the answer is “your crawlspace is fine, don’t spend the money.”