BASEMENT WATERPROOFING · FOUNDATION REPAIR · CRAWL SPACE
Dry basements.
Sound foundations.
Leave ALL the
worry to us.
Three generations of Pirogs have kept Maryland basements dry since 1953.
Written quote the same day, no pressure, no upsell, just an honest fix
for what your home actually needs.
The people who quote your job are the people who do the work.
What We Do
Four Core Services.
All Maryland-Specific.
Every service is backed by OBW's written workmanship guarantee, terms vary by service, ask your inspector, and performed by our own in-house crews, never subcontractors.
Basement Waterproofing
Interior drainage, exterior membranes, crack repair, vapor barriers, sump pumps. Maryland's most common home repair, done right the first time.
Learn moreFoundation Repair
Carbon fiber reinforcement, push piers, wall anchors, crack repair. We stabilize what's moving before it gets worse.
Learn moreCrawl Space Encapsulation
Heavy-duty liner, professional dehumidification, integrated drainage. Maryland crawlspaces hold moisture. We seal yours permanently.
Learn moreCrawl Space Repair
Sagging floors, wood rot, crawl space jacks, termite damage, subfloor restoration. Structural repairs backed by a written workmanship guarantee.
Learn moreCommon Problem Signs
What's Happening
With Your Home?
Pick the sign that looks familiar. We'll point you to the right solution, or schedule a free inspection and we'll diagnose it for you.
Water in my basement After rain, puddles on the floor, or wet walls 
Wall or foundation cracks Vertical, diagonal, or stair-step cracks 
Musty smell or mold Odors throughout the house, visible mold below 
Sagging floors Floors that flex, dip, or feel soft underfoot 
Bowing walls Foundation walls pushing inward, horizontal cracks 
Yard flooding Water pooling near the house, soggy spots 
Sump pump problem Not running, alarm triggered, or pit is full 
Not sure Something feels wrong but I'm not certain Why It Matters
What Makes Oriole Different
from Every Other Option
These aren't marketing claims. They're structural decisions built into this company over 73 years of family ownership.
Honest, Consultative Guidance
Oriole's inspectors take a consultative approach, there to diagnose accurately and recommend the right fix, not to close you on the largest system.
Written Workmanship Guarantee
Terms vary by service, ask your inspector exactly what's covered. Every guarantee is documented in writing, not a verbal promise.
Maryland-Built Systems
Piedmont clay. Chesapeake water tables. Maryland freeze-thaw cycles. Our systems are engineered for these conditions, not adapted from a generic national playbook.
Our Crew Does the Work
No subcontractors on waterproofing or foundation jobs. The crew that shows up was trained internally and is accountable to the Pirog family that has led this business for three generations.
of Pirogs
Three Generations of Family Ownership
Started by Frank Sr.
Still family-run.
Frank Pirog Sr. founded Oriole in 1953 as Maryland's first dedicated basement waterproofing company. His son Frank Jr. took over in the 70s. Frank III ran the business through the 90s and 2000s. Today, Amber Pirog, Frank III's widow, leads the company and continues the family business. Mark Michael, Frank III's cousin, runs operations.
We've completed 4,000+ jobs across Maryland. Every one is backed by a written workmanship guarantee, terms vary by service, because we plan to still be here for generations to come.
Reviews
What Our Maryland Neighbors Say
BASEMENT WATERPROOFING · FOUNDATION REPAIR · CRAWL SPACE
Ready to solve your basement or foundation problem?
Free inspection. Written quote same day. Honest, consultative guidance, the Pirog family standard for three generations.
Family-owned for three generations · Joppa, MD · MHIC #4247 · Written Workmanship Guarantee