R.S. Widdoes & Son, Incorporated
Wilmington, DE 19809
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Our Story
Quality Concrete and Masonry Construction Since 1980
Since 1980, R.S. Widdoes & Son, Inc. has served New Castle County and the Delaware area with a commitment to quality craftsmanship and value. We are a family-owned business in our second generation, and we take real pride in our work. Over the years, we have developed a reputation as one of the top concrete contractors in Northern Delaware. Our success in Delaware has allowed us to expand our business to service commercial customers in Northern Maryland and Southeastern Pennsylvania.
No matter what type of project you have, we have the experience and expertise to complete it successfully. We are proud of our work and enjoy the relationships that we have established with our clients over the years.
We Are Ready for Your Project
With well over 100 years of combined experience and more than 40 years in business, we are ready for your next project. Being skilled craftsmen, we use only the finest concrete and masonry tools and materials. Attention to detail, cleanliness, and safety are our priority. We guarantee our work and your satisfaction.
Recent Awards:
American Society of Concrete Contractors: Safety Awards; Zero Lost Time, Certificate of Recognition and Fleet Safety
Associated Builders and Contractors: Step Award Diamond Level
Snow & Ice Management Association: Safety Award; The Safety Award is given to companies who promote safe and effective snow and ice removal procedures. This award is presented to the professionals who maintained exceptional safety standards to help protect their employees, clients, and the public during the snow season.
Commercial Experience
Apartments & Condominiums
Church / Synagogue
Gas Station
Grocery Stores
Medical Office
Misc Project
Retail Store
Storage Facility / Warehouse
Airport Runway
Animal Hospital / Kennel
Assisted Living
Athletic Field
Auto Dealership / Service
Bank
City / Town Hall
Civil & Site Development
Club House / Community Center
Court House
Data Centers - Mission Critical
Education (K-12)
Fire / Police Station
Fitness Center
Golf Course
Government
Historic Preservation
Hospital / Nursing Home
Hotel / Motel
House
Industrial Maintenance
Laboratory
Library
Manufacturing Plant
Mixed Use
Museum
Non-Building Construction
Non-Residential Building
Office Building
Park / Playground
Parking Garage
Parking Lots
Post Office
Pre-Manufactured Structures
Radio / Television Station
Residential Building
Restaurant
Road / Highway
Single Family Residential
Swimming Pool
Tennis Court
Terminal - Airport / Bus / Railroad
Theater
Theme Park
Utilities
Regions & Counties Serviced
- Pennsylvania-Eastern
Delaware All
Maryland All
New Jersey All
Pennsylvania All
Our CSI Codes
02 41 13 - Selective Site Demolition
02 41 13.13 - Paving Removal
02 41 13.33 - Railtrack Removal
02 41 19.13 - Selective Building Demolition
02 41 91 - Selective Historic Demolition
02 57 13 - Sinkhole Remediation by Grouting
02 57 13.13 - Sinkhole Remediation by Compaction Grouting
02 57 16 - Sinkhole Remediation by Backfilling
03 01 20 - Maintenance of Concrete Reinforcing
03 01 30 - Maintenance of Cast-in-Place Concrete
03 01 30.51 - Cleaning of Cast-in-Place Concrete
03 01 30.71 - Rehabilitation of Cast-in-Place Concrete
03 01 40 - Maintenance of Precast Concrete
03 01 40.61 - Resurfacing of Precast Concrete
03 01 40.71 - Rehabilitation of Precast Concrete
03 01 70 - Maintenance of Mass Concrete
03 05 00.00.01 - Common Work Results for Concrete
03 06 20 - Schedules for Concrete Reinforcing
03 06 20.13 - Concrete Beam Reinforcing Schedule
03 06 20.16 - Concrete Slab Reinforcing Schedule
03 06 30 - Schedules for Cast-in-Place Concrete
03 06 30.13 - Concrete Footing Schedule
03 06 30.16 - Concrete Column Schedule
03 06 30.19 - Concrete Slab Schedule
03 06 30.26 - Concrete Beam Schedule
03 06 70 - Schedules for Mass Concrete
03 10 00.00.01 - Concrete Forming and Accessories
03 11 13 - Structural Cast-in-Place Concrete Forming
03 11 13.13 - Concrete Slip Forming
03 11 13.16 - Concrete Shoring
03 20 00.00.01 - Concrete Reinforcing
03 21 13 - Galvanized Reinforcing Steel
03 21 16 - Epoxy-Coated Reinforcing Steel
03 22 13 - Galvanized Welded Wire Fabric Reinforcing
03 22 16 - Epoxy-Coated Welded Wire Fabric Reinforcing
03 24 00.00.01 - Fibrous Reinforcing
03 30 53 - Miscellaneous Cast-in-Place Concrete
03 31 13 - Heavyweight Structural Concrete
03 31 23 - High-Performance Structural Concrete
03 33 16 - Lightweight Architectural Concrete
03 34 00.00.01 - Low Density Concrete
03 35 19 - Colored Concrete Finishing
03 35 23 - Exposed Aggregate Concrete Finishing
03 35 26 - Grooved Concrete Surface Finishing
03 35 33 - Stamped Concrete Finishing
03 37 16 - Pumped Concrete
03 39 13 - Water Concrete Curing
03 39 23 - Membrane Concrete Curing
03 39 23.13 - Chemical Compound Membrane Concrete Curing
03 39 23.23 - Sheet Membrane Concrete Curing
03 47 13 - Tilt-Up Concrete
03 47 16 - Lift-Slab Concrete
03 50 00.00.01 - Cast Decks and Underlayment
03 51 16 - Gypsum Concrete Roof Decks
03 53 13 - Emery-Aggregate Concrete Topping
03 53 16 - Iron-Aggregate Concrete Topping
03 54 13 - Gypsum Cement Underlayment
03 54 16 - Hydraulic Cement Underlayment
03 60 00.00.01 - Grouting
03 61 13 - Dry-Pack Grouting
03 62 13 - Non-Metallic Non-Shrink Grouting
03 62 16 - Metallic Non-Shrink Grouting
03 70 00.00.01 - Mass Concrete
03 80 00.00.01 - Concrete Cutting and Boring
03 81 13 - Flat Concrete Sawing
04 01 20 - Maintenance of Unit Masonry
04 01 20.51 - Unit Masonry Maintenance
04 01 20.52 - Unit Masonry Cleaning
04 01 20.91 - Unit Masonry Restoration
04 01 20.93 - Testing and Sampling Brick Units for Restoration
04 01 40 - Maintenance of Stone Assemblies
04 01 40.51 - Stone Maintenance
04 01 40.52 - Stone Cleaning
04 01 40.91 - Stone Restoration
04 01 50 - Maintenance of Refractory Masonry
04 01 60 - Maintenance of Corrosion-Resistant Masonry
04 01 70 - Maintenance of Manufactured Masonry
04 05 13 - Masonry Mortaring
04 05 13.16 - Chemical-Resistant Masonry Mortaring
04 05 13.19 - Epoxy Masonry Mortaring
04 05 13.23 - Surface Bonding Masonry Mortaring
04 05 13.26 - Engineered Masonry Mortaring
04 05 13.29 - Refractory Masonry Mortaring
04 05 13.91 - Masonry Restoration Mortaring
04 05 16 - Masonry Grouting
04 05 16.16 - Chemical-Resistant Masonry Grouting
04 05 16.26 - Engineered Masonry Grouting
04 05 19 - Masonry Anchorage and Reinforcing
04 05 19.13 - Continuous Joint Reinforcing
04 05 19.16 - Masonry Anchors
04 05 19.26 - Masonry Reinforcing Bars
04 05 19.29 - Stone Anchors
04 05 23 - Masonry Accessories
04 05 23.13 - Masonry Control and Expansion Joints
04 05 23.16 - Masonry Embedded Flashing
04 05 23.19 - Masonry Cavity Drainage, Weepholes, and Vents
04 06 20 - Schedules for Unit Masonry
04 06 20.13 - Masonry Unit Schedule
04 06 40 - Schedules for Stone Assemblies
04 06 50 - Schedules for Refractory Masonry
04 06 60 - Schedules for Corrosion-Resistant Masonry
04 06 70 - Schedules for Manufactured Masonry
04 08 00.00.01 - Commissioning of Masonry
04 20 00.00.01 - Unit Masonry
04 21 13 - Brick Masonry
04 21 13.13 - Brick Veneer Masonry
04 21 13.23 - Surface-Bonded Brick Masonry
04 21 16 - Ceramic Glazed Clay Masonry
04 21 19 - Clay Tile Masonry
04 21 23 - Structural Clay Tile Masonry
04 21 26 - Glazed Structural Clay Tile Masonry
04 21 29 - Terra Cotta Masonry
04 22 00.13 - Concrete Unit Veneer Masonry
04 22 00.16 - Surface-Bonded Concrete Unit Masonry
04 22 19 - Insulated Concrete Unit Masonry
04 22 23 - Architectural Concrete Unit Masonry
04 22 23.13 - Exposed Aggregate Concrete Unit Masonry
04 22 23.16 - Fluted Concrete Unit Masonry
04 22 23.19 - Molded-Face Concrete Unit Masonry
04 22 23.23 - Prefaced Concrete Unit Masonry
04 22 23.26 - Sound-Absorbing Concrete Unit Masonry
04 22 23.29 - Split-Face Concrete Unit Masonry
04 22 33 - Interlocking Concrete Unit Masonry
04 23 13 - Vertical Glass Unit Masonry
04 23 16 - Glass Unit Masonry Floors
04 23 19 - Glass Unit Masonry Skylights
04 24 13 - Site-Cast Adobe Unit Masonry
04 24 16 - Manufactured Adobe Unit Masonry
04 25 13 - Metal-Supported Unit Masonry Panels
04 27 13 - Composite Unit Masonry
04 27 23 - Cavity Wall Unit Masonry
04 28 13 - Dry-Stacked, Concrete-Filled Masonry Units
04 28 23 - Mortar-Set, Concrete-Filled Masonry Units
04 40 00.00.01 - Stone Assemblies
04 41 00.00.01 - Dry-Placed Stone
04 42 13 - Masonry-Supported Stone Cladding
04 42 16 - Steel-Stud-Supported Stone Cladding
04 42 19 - Strongback-Frame-Supported Stone Cladding
04 42 23 - Truss-Supported Stone Cladding
04 42 26 - Grid-System-Supported Stone Cladding
04 42 43 - Stone Panels for Curtain Walls
04 43 00.00.01 - Stone Masonry
04 50 00.00.01 - Refractory Masonry
04 51 00.00.01 - Flue Liner Masonry
04 52 00.00.01 - Combustion Chamber Masonry
04 53 00.00.01 - Castable Refractory Masonry
04 54 00.00.01 - Refractory Brick Masonry
04 57 00.00.01 - Masonry Fireplaces
04 60 00.00.01 - Corrosion-Resistant Masonry
04 61 00.00.01 - Chemical-Resistant Brick Masonry
04 62 00.00.01 - Vitrified Clay Liner Plate
04 70 00.00.01 - Manufactured Masonry
04 71 13 - Calcium Silicate Manufactured Brick Masonry
04 72 00.00.01 - Cast Stone Masonry
04 73 13 - Calcium Silicate Manufactured Stone Masonry
22 14 13 - Facility Storm Drainage Piping
22 14 19 - Sump Pump Discharge Piping
22 14 23 - Storm Drainage Piping Specialties
22 14 26 - Facility Storm Drains
22 14 26.16 - Facility Area Drains
22 14 26.19 - Facility Trench Drains
22 14 29 - Sump Pumps
22 14 29.19 - Sump-Pump Basins and Pits
31 22 13 - Rough Grading
31 22 16 - Fine Grading
31 22 16.13 - Roadway Subgrade Reshaping
31 22 19 - Finish Grading
31 22 19.13 - Spreading and Grading Topsoil
31 23 16 - Excavation
31 23 16.13 - Trenching
31 23 23 - Fill
31 23 23.13 - Backfill
31 23 23.23 - Compaction
31 23 23.33 - Flowable Fill
31 23 33 - Trenching and Backfilling
31 25 13 - Erosion Controls
31 25 23 - Rock Barriers
31 25 53 - Sedimentation Controls
31 25 63 - Rock Basins
31 35 19 - Geosynthetic Slope Protection
31 35 19.16 - Geotextile Slope Protection
31 35 23.13 - Cast-In-Place Concrete Slope Paving
31 35 26 - Containment Barriers
31 37 13 - Machined Riprap
31 37 16.13 - Rubble-Stone Riprap
31 37 16.19 - Sacked Sand-Cement Riprap
31 66 16 - Special Foundation Walls
32 01 26.74 - Concrete Overlays
32 01 90.29 - Topsoil Preservation
32 10 00.00.01 - Bases, Ballasts, and Paving
32 16 13.13 - Cast-In-Place Concrete Curbs and Gutters
32 16 13.16 - Cast-In-Place Concrete Curbs
32 16 13.19 - Cast-In-Place Concrete Gutters
32 30 00.00.01 - Site Improvements
32 32 13 - Cast-in-Place Concrete Retaining Walls
32 32 19 - Unit Masonry Retaining Walls
32 32 34 - Reinforced Soil Retaining Walls
32 71 00.00.01 - Constructed Wetlands
33 40 00.00.01 - Storm Drainage Utilities
33 41 13 - Public Storm Utility Drainage Piping
33 42 13 - Pipe Culverts
33 42 16 - Concrete Culverts
33 42 16.16 - Cast-in-Place Concrete Culverts
33 44 13.13 - Catchbasins
33 46 13 - Foundation Drainage
33 46 13.13 - Foundation Drainage Piping
33 46 16 - Subdrainage Piping
33 46 16.13 - Subdrainage Piping
33 46 16.19 - Pipe Underdrains
33 46 19.16 - Geocomposite Underslab Drainage
33 46 26 - Geotextile Subsurface Drainage Filtration
33 46 33 - Retaining Wall Drainage
33 47 26 - Storm Drainage Ponds and Reservoirs
33 47 26.13 - Stabilization Ponds
33 47 26.16 - Retention Basins
33 49 13 - Storm Drainage Manholes, Frames, and Covers
33 49 23 - Storm Drainage Water Retention Structures
35 01 70 - Operation and Maintenance of Dams
35 05 70 - Common Work Results for Dams
35 06 70 - Schedules for Dams
35 49 13 - Floodwalls
35 49 13.13 - Concrete Floodwalls
35 70 00.00.01 - Dam Construction and Equipment
35 71 13 - Concrete Gravity Dams
35 71 16 - Masonry Gravity Dams
35 72 13 - Concrete Arch Dams
35 74 13 - Concrete Buttress Dams
Associations & Memberships
Associated Builders and Contractors
BBB (Better Business Bureau) A+ Rating
ACI (American Concrete Institute)
ASCC (American Society of Concrete Contractors)
SIMA (Snow & Ice Management Assn.)
Angie's List Super Service Award 2015
Angie's List Super Service Award 2014
Angie's List Super Service Award 2016
Angie's List Super Service Award 2017
Preferred Brands
Ardex
W.R. Meadows
Stego Industries
Keystone Cement
Euclid Chemical
Sika Corporation
3M Safety Equipment
5.11 Tactical
Kaufman Concrete Treatments
Glen-Gery Brick
Conspec By Dayton Superior
L&M Seal Hard
L&M Construction Chemicals
Case Construction
Hilti
Peri-Up
MSA (Mine Safety Appliances)
MQ Whiteman
MQ Multiquip
Wacker Neuson
Wacker
