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.
Initial exterior assessments, requiring a full perimeter walk, are typically scheduled within a few days across our service area.
Quotes break out excavation footage, membrane material, footing drain installation, and backfill separately in writing.
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.
Soil sloping toward the foundation sends every rainfall straight at your basement wall, regardless of how good the membrane below is.
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.
Describe what you're seeing from outside — pooling water, visible staining on the wall, saturated soil — and dispatch routes a crew equipped for exterior assessment.
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.
Real feedback from Towson-area customers who called us for exterior waterproofing.
"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 Towson, MD.
Arrow Tight Waterproofing provides exterior waterproofing throughout Towson, MD, dispatching from regional staging points to keep arrival times short across our full coverage footprint.
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.
