When water reaches your foundation from the outside, through poor grading, a failed membrane, or saturated soil, the fix belongs outside too, not just masked from the inside.
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Four commitments that separate a properly trained exterior waterproofing crew from a generalist showing up with a truck and a hope.
Certification covers grading assessment and rubberized membrane application to manufacturer spec, verified on every job.
Active pooling against the foundation moves to priority scheduling ahead of routine appointments.
No surprise charges for unexpected utility lines or rock encountered during excavation — those are flagged and discussed first.
We apply rubberized asphalt or sheet membrane rated for permanent below-grade exposure, not a consumer coating that degrades in a season or two.
We don't run a one-size-fits-all playbook — every exterior waterproofing job starts from these core service components, adapted to what your property actually needs.
We excavate along the affected wall section down to the footing, prep the surface, and apply a rubberized membrane rated for permanent below-grade exposure. This is the most thorough exterior fix available and typically carries the longest service life.
Older homes often have drains that have silted in or collapsed over decades — we assess and replace where compromised.
We regrade the perimeter to direct water away from the structure and coordinate downspout extensions as part of a complete fix.
Window wells without proper drainage collect and hold water against a vulnerable point in the wall — often the source of a leak that seemed to come from nowhere.
Cracks and cold joints exposed during excavation get treated directly from the outside before the membrane goes over them.
Four steps, start to finish — from your call to a backfilled, regraded foundation wall.
Photos of the affected area, texted ahead, help the technician plan equipment before arriving.
Most Northport, NY exterior assessments are scheduled within a few days given the scope of a proper walk.
Utility locates are scheduled ahead of excavation as standard practice.
Membrane and footing drain work carries a written warranty against failure at the treated wall section.
What Northport, NY customers are saying after their exterior waterproofing service.
"They found our footing drain had completely collapsed after thirty years — explains why interior fixes never fully worked before."
"Regraded the whole side yard and extended our downspouts as part of the job. Haven't seen water against that wall since."
"Excavation crew was careful with our landscaping and put everything back better than it was before."
"They explained why interior injection alone wasn't going to solve our specific problem before recommending exterior work."
The questions Northport customers ask us before booking exterior waterproofing service.
Our exterior waterproofing crews cover Northport and the surrounding Northport, NY service area, with regional dispatch keeping response times tight regardless of which part of the footprint you're in.
Because exterior work requires excavation crews, coverage is more regional than interior services — worth confirming by phone either way.
Notice: Arrow Tight Waterproofing is a free referral service designed to assist homeowners and businesses in connecting with independent local contractors. All contractors and service technicians are independent and Arrow Tight Waterproofing does not warrant or guarantee any work performed. It is the responsibility of the customer to verify that the hired contractor furnishes the necessary license and insurance required for the work being performed. All calls are routed to independent local service providers.
