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.
Call +1-866-476-1348
What "specialized" actually means for exterior waterproofing at our company — not a marketing word, a set of specific practices.
Certification covers grading assessment and rubberized membrane application to manufacturer spec, verified on every job.
Initial exterior assessments, requiring a full perimeter walk, are typically scheduled within a few days across our service area.
No surprise charges for unexpected utility lines or rock encountered during excavation — those are flagged and discussed first.
Drainage board over the membrane channels water to the footing drain rather than letting pressure build against the wall.
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.
A footing drain intercepts groundwater at the base of the foundation and carries it away before it can build pressure against the wall.
We regrade the perimeter to direct water away from the structure and coordinate downspout extensions as part of a complete fix.
We install well drains tied into the footing drain system with a clear cover to reduce debris.
Cracks and cold joints exposed during excavation get treated directly from the outside before the membrane goes over them.
Here's what happens between your call and a completed exterior fix.
Active pooling against the foundation is flagged for priority scheduling.
Technicians walk the full property perimeter before recommending excavation, checking grading and downspout placement.
A full grading and drainage evaluation identifies whether the fix needs excavation, drain repair, or grading correction alone.
We document the completed system with photos before backfilling for your records.
What West Islip, 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."
High-intent questions we hear most often about exterior waterproofing in West Islip, NY.
Our exterior waterproofing crews cover West Islip and the surrounding West Islip, NY service area, with regional dispatch keeping response times tight regardless of which part of the footprint you're in.
Not certain whether exterior waterproofing reaches your property? Call +1-866-476-1348 and dispatch can confirm immediately.
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.
