Waterproofing, Caulking & Air/Vapor Barrier Systems

Witmer Waterproofing, LLC. provides engineers, architects, building owners and facility managers throughout the Central Pennsylvania region with comprehensive waterproofing, caulking and air/vapor barrier services for both new construction and existing structures. We are certified installers of the top products in our industry such as Grace, Cetco, Carlisle and Henry.

We work on projects of all sizes, and specialize in large, complex commercial projects where our experience in managing unpredictable schedules, changes required by unexpected conditions and managing the everyday challenges assure you of a successful project.

We offer above and below-grade waterproofing systems, dampproof coatings, caulking / joint seals / floor joint fillers and air/vapor barrier services.

Above and below-grade waterproofing systems:

  • Fully adhered sheet membrane waterproofing systems
  • Mechanically attached sheet membrane waterproofing systems
  • Fluid applied waterproofing systems
  • Spray applied foundation and cavity wall dampproofing
  • Spray applied clear water repellants
  • Elastomeric coatings

Waterproofing Products:



Air-Vapor Barrier Services:

  • Fluid applied systems
  • Fully adhered sheet membrane systems
  • Mechanically attached sheet membrane systems

Air-Vapor Barrier Products:



Caulking and Joint Sealant Services:

  • New Construction, exterior and interior caulking
  • Existing buildings – removal and replacement of deteriorated caulking / joint sealants
  • Curtain wall joint sealants, both new and repairs
  • Tamper-resistant security type joint sealants
  • Fire-Safe caulking
  • Floor joint fillers and sealants

Caulking and Joint Sealant Products:


Brent Miller promoted to Assistant Superintendent

Congratulations to Brent Miller!
promoted to Assistant Superintendent, Waterproofing & Coatings



The Witmer Group has promoted Foreman Brent Miller to the newly added position of Assistant Superintendent.  Miller will be working alongside Waterproofing and Coatings General Superintendent Bill Kefauver, assisting in the supervision of field operations, coordinating for and interfacing with clients, contractors and field personnel, and monitoring work performance, quality, productivity, safety and scheduling.

Miller has worked in the industry for 13 years, beginning his career in waterproofing/coatings in 2004.  As a Foreman, he was celebrated for outstanding customer service, exceptional workmanship, and consistently meeting productivity and safety goals.

Miller lives in Wellsville, PA, York County, with his Partner Kristin and their three daughters, Mackenzie, Morgan and Madilyn.

Brent Miller crop sm

Learn more about Brent from his Employee of the Month story here!