Home Washington D.C. Caulking Contractors

Mallen Company

Gaithersburg, MD 20879


Company Info

  • Est. 1976
  • Annual Vol Undisclosed
  • DUNS # 080017140

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Our Story

Mallen Company Inc is a small business providing a full range of commercial and residential caulking and sealant services in the Washington DC Metropolitan area, serving Maryland, DC, Virginia, and Delaware. We proudly offer highly trained industry professionals, and all of our work is 100% guaranteed.

Interior Caulking and Sealant Services

  • Expansion and Control Joints, Cut-out and Re-caulk
  • Restaurants (ADA/FDA Compliant)
  • Sporting Clubs (sink tops, shower facilities)
  • Fire-Stops (floor, wall, and ceiling penetrations for multi-story buildings, community and public meeting centers)
  • Glazing - Blast Proofing Windows (hook up with window film company)    
  • Clean Rooms (sealing switches and outlets, wall penetrations, door frames, and window frames)

Exterior Caulking and Sealant Services

  • Cut Out Old, Non-Viable Caulking, Install Backer Rod, and Re-caulk Expansion and Control Joints
  • Sidewalk to Building Joints
  • Failed Joints Around Windows
  • Failed Window Gaskets
  • Glazing – Worn Out Gaskets of Windows 20+ Years Old
  • Swimming Pool Coping Stones
  • Base of Columns
  • Cold Joints Caulking for Sidewalks, Entryways, Slabs
  • Handicap Ramp Joints
  • Curb to Sidewalk Joints
  • Metro High Traffic Areas
  • Sealing Brick Mortar
  • Marine Caulking

*Dennis Mallen of Mallen Company Inc. has been listed in The Blue Book since 1990.

What We Do

Commercial Experience

Club House / Community Center Misc Project Residential Building Swimming Pool
Apartments & Condominiums Assisted Living Bank Church / Synagogue Design Build Education (K-12) Fire / Police Station Fitness Center Gas Station Government Grocery Stores Historic Preservation Hospital / Nursing Home Hotel / Motel Industrial Maintenance Laboratory Marine Medical Office Military Non-Residential Building Office Building Parking Garage Radio / Television Station Restaurant Retail Store Single Family Residential Storage Facility / Warehouse Terminal - Airport / Bus / Railroad

Regions & Counties Serviced

  • Washington D.C.

Delaware All

District Of Columbia All

Maryland All

Virginia All

Our CSI Codes

07 01 10 - Maintenance of Dampproofing and Waterproofing
07 01 90 - Maintenance of Joint Protection
07 01 90.71 - Joint Sealant Rehabilitation
07 01 90.81 - Joint Sealant Replacement
07 06 10 - Schedules for Dampproofing and Waterproofing
07 06 90.13 - Joint Sealant Schedule
07 90 00.00.01 - Joint Protection
10 74 43 - Below-Grade Egress Assemblies
31 01 70.61 - Tunnel Leak Repairs

Project Experience

  • Non-Union
  • Public
  • Private
  • Service Work/Repairs


Featured Image 1
Cutout& recaulk windows
Featured Image 2
Ashburn Clubhouse - caulking exterior windows
Featured Image 3
Aqua tots pool- caulking copeing stone perimeter and pool deck
Featured Image 4
Beth El Jewish synagogues

Preferred Brands

Dow Corning
Dow Corning
3M Fire Stop
3M Fire Stop
Grace Construction Products
Grace Construction Products
Sika Corporation
Sika Corporation
Pecora Corporation
Pecora Corporation
STI (Specified Technologies Inc.)
STI (Specified Technologies Inc.)
Dr. Zen
Dr. Zen
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