
Wholesale Building Materials · Davenport, Iowa
Wholesale Siding & Exterior Building Materials for Iowa & Illinois Contractors
Suburban Wholesale & Supply helps contractors sell more, install better and keep projects moving with local inventory, jobsite delivery, product training and experienced support.
- Over 41 Years in the Quad Cities
- Wholesale Contractor Pricing
- VSI-Certified Installer Training
Why Contractors Buy From Suburban
Material on the shelf, help at the counter
29
Sequoia Select colors in stock
Every color of Gentek Sequoia Select D4, in our Davenport warehouse.
Same or next day
On stocked items
Most of the time. Get delivery orders in by 3pm the day before.
About 1 hour
Jobsite delivery radius
We deliver about an hour out from the Quad Cities, or pick up at our docks.
Free
Most samples & demo kits
Sample books, color decks, ASCEND kits and cutaways at the counter.
VSI
Certified trainer on staff
VSI, Gentek, Therma-Tru, Wincore and Progressive Foam classes.
HOVER
Takeoffs turned into quotes
Upload your HOVER report and our wholesale team builds the material list, usually within 24-48 hours.
Stocking the brands contractors trust
Siding First
Every siding system your crews install
Gentek vinyl, steel and aluminum, ASCEND composite cladding, shakes, soffit, trim coil and the accessories that finish the job, stocked or ordered through one local distributor.

Vinyl Siding
Gentek Sequoia Select, Signature Supreme, Concord and board & batten. All 29 Sequoia Select D4 colors stocked.

Steel Siding
SteelTek Supreme, SteelTek, SteelSide, Cedarwood and Universal for homeowners who want steel.

ASCEND Composite Cladding
5" and 7" plank and 12" board & batten, with samples and demo kits at the counter.

Aluminum Siding
Gentek Deluxe, Woodgrain 2000 and Cedarwood for repairs, matches and full exteriors.

Shakes & Scallops
Tando stocked in our warehouse, plus Gentek Fairhaven Sound shakes and scallops.

Soffit, Fascia & Trim Coil
Stocked soffit and fascia, and 50 trim coil colors in stock with matching OSI Quad sealant.
Built Around How You Work
From the kitchen table to the final walkthrough
- Step 1Sell
- Samples & demo kits
- Showroom visits
- Color & profile comparisons
- Step 2Estimate
- HOVER takeoffs
- Material lists
- Waste & accessories
- Step 3Order
- Local inventory
- Special orders
- Lead times
- Step 4Deliver
- Jobsite delivery
- Dock pickup
- Add-on runs
- Step 5Install
- VSI training
- Installation guides
- Manufacturer classes
- Step 6Service
- Warranty help
- Color matching
- Replacement panels

Local Inventory
Stocked here in Davenport
Our warehouse on N Harrison Street keeps the material contractors reorder most, so a short crew doesn't mean a lost day.
- All 29 colors of Gentek Sequoia Select D4
- Soffit, fascia and trim coil
- Tando shakes
- Progressive Foam, including ProFold
- OSI Quad sealant matched to coil colors
- Housewrap, flashing and fasteners
- Malco tools and Tapco brakes
Gentek steel, aluminum, Signature Supreme and Concord are kept in limited quantities, and our ASCEND stock is growing. Call 563-391-4000 to check stock.
See everything we stock →Contractor Learning Center
Hundreds of articles written for contractors
Selling, estimating, installing and servicing siding, windows and doors, organized by topic.
- Vinyl SidingGentek vinyl lines, profiles, colors and board & batten.
- Steel SidingGentek steel siding systems and when to sell them.
- ASCEND Composite CladdingPlanks, board & batten, colors, accessories and selling ASCEND.
- Selling Siding & WindowsShowing, explaining and closing jobs with homeowners.
- Estimating & OrderingTakeoffs, HOVER, order checklists and getting material on time.
- InstallationInstallation details, VSI best practices and jobsite tips.
Visit Us
Bring your customer to the showroom
Walk homeowners through siding, window and door displays, then sit down at a conference table to finish the sale.
- Open during all business hours, no appointment needed
- Conference rooms and tables for your customer meetings
- After-hours and Saturday visits by appointment
- 3602 N Harrison St, Davenport, IA 52806
- Monday-Friday: 7:30am-4:30pm · Saturday-Sunday: Closed
- 563.391.4000


Contractor Training
Classes in our own training center
Our president is a VSI Certified Trainer, a former InstallationMasters instructor and Therma-Tru trained. Some classes are free, and some have a fee.
- VSI (Vinyl Siding Institute)
- Gentek siding & cladding
- Gentek windows
- Therma-Tru
- Wincore
- OSI Quad
- Progressive Foam
Service Area
Serving contractors across Eastern Iowa & Western Illinois
We deliver about an hour out from the Quad Cities, and our docks handle every size of truck for contractors who prefer to pick up.
- Davenport
- Bettendorf
- Moline
- Geneseo
- Clinton
Get Started Today
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Suburban Wholesale & Supply
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