Gentek SteelTek Supreme · Twin Falls, Idaho
Steel Siding in Twin Falls, Idaho
We recommend Gentek SteelTek Supreme: 29-gauge Galvalume® steel with a Kynar® PVDF finish, a lifetime warranty and 50-year hail protection. It’s a big step up from standard steel siding for not much more. We order it in the profile and color you need and match it with trim.
50-year hail protection
Lifetime transferable warranty
Special order
Typically 3–4 weeks
Job-site delivery
Twin Falls to Sun Valley & Burley
Trade pricing
Contractor accounts & invoicing
Why We Sell SteelTek Supreme
Canyon Exteriors Supply Company is a Twin Falls exterior supplier and Gentek dealer. Gentek makes several steel siding lines, and we steer almost every customer to SteelTek Supreme. It’s significantly better than the other lines, and it doesn’t cost much more.
The panel is roll-formed 29-gauge Galvalume® AZ-50 steel, whose 55% aluminum-zinc coating protects the steel from corrosion. On top of that is a Kynar® PVDF finish, a fluoropolymer coating that keeps a low-gloss color and resists chalking, fading, chipping, scratches and mildew. Steel won’t absorb moisture, needs no caulking, and stands up to fire, wind and termites.
Want a color that only another Gentek steel line offers? We can special order SteelTek, SteelSide, Universal or Cedarwood steel too. We can also order Gentek aluminum siding, though most customers are better served by steel.
SteelTek Supreme Profiles
| Profile | Texture | Good for |
|---|---|---|
| Double 4″ Clapboard | Roughsawn | Traditional lap look, farmhouses, re-sides |
| Double 5″ Clapboard | Roughsawn | A slightly wider, bolder lap line |
| 8″ Clapboard | Roughsawn | Wide-plank look, modern and craftsman homes |
| 12″ Vertical Board & Batten | Medium woodgrain | Gables, accents, full board-and-batten |
All steel and aluminum siding is special order, typically 3–4 weeks. We keep white steel J-channel and 3/4″ steel outside corners on the shelf. Call 208-539-0851 for current lead times and pricing.
SteelTek Supreme Colors
SteelTek Supreme comes in 12 low-gloss Kynar colors, every one backed by 35-year chalk and color change protection. Gentek coordinates its steel siding colors with matching trim and accessories.
- Bright White
- Chelsea Bluff
- Adobe
- Delray Sand
- Thistle
- Sable
- Juniper Grove
- Dover Gray
- Harbor Bay
- Chevron Smoke
- Watermill Blue
- Taylor Red
Colors on a screen are never exact. Steel siding is special order and special orders aren’t returnable, so ask us about seeing a sample before you choose.
Why Steel Siding Works in Southern Idaho
Built for hail
Heavy-duty 29-gauge steel resists hail and denting, and SteelTek Supreme’s warranty includes 50-year hail protection.
Stays straight
Steel is dimensionally stable, so it resists the buckling and waviness that big temperature swings can cause.
Fire, wind & termites
Steel won’t burn like wood, holds up to damaging winds, and termites can’t touch it.
No moisture damage
Unlike wood or fiber cement, steel doesn’t absorb water, so snowmelt and freeze-thaw cycles won’t rot or swell it.
Color that lasts
The Kynar PVDF finish resists chalking, fading, staining and mildew, backed by 35-year chalk and color change protection.
Low maintenance
No caulking, scraping or painting. A rinse with a garden hose is usually all it needs.
For Contractors & Builders
- Special orders placed fast, with lead times you can plan around
- White J-channel and 3/4″ outside corners on the shelf
- Trade pricing, invoicing and contractor accounts
- Job-site delivery scheduled around your crew
- Basic material estimates from your plans
For Homeowners & DIYers
- We sell to the public, no contractor license needed
- Honest help choosing steel vs. vinyl vs. ASCEND composite
- We make sure you get every trim piece and accessory you need
- We’re supply-only, so we’re happy to work with any installer you choose
Everything to Finish the Job
Finish a steel-sided exterior with matching pieces:
- Aluminum soffit: vented and solid Gentek T4 panels
- Aluminum fascia: 6″ and 8″ Gentek fascia to wrap rooflines
- Metal trim, J-channel & roofline accessories
- Trim coil for custom-bent window and door wraps
- Gentek vinyl siding if you need a lower-cost option in stock today
Job-Site Delivery Across the Magic Valley
Pick up the same day at 299 Addison Ave W, Suite B, Twin Falls (Mon–Fri 7:30–4:30), or we can deliver to your job site and schedule it around your crew. We deliver to Twin Falls, Kimberly, Filer, Wendell, Gooding, Hagerman, Burley, Rupert, Mountain Home, Hailey, Bellevue and Sun Valley. Outside those areas? Call us and we’ll do our best to help.
Frequently Asked Questions
SteelTek Supreme pairs 29-gauge Galvalume AZ-50 steel with a Kynar PVDF finish, the toughest coating Gentek offers, and carries a lifetime limited, non-prorated, transferable warranty with 50-year hail and 35-year chalk and color change protection. It’s significantly better than the other lines for not much more money.
Steel is stronger, more hail- and dent-resistant, won’t burn, and won’t get brittle in the cold. It costs more than vinyl and is special order. Vinyl costs less, we stock it in Twin Falls, and it’s quicker to install. Come talk it through with us.
Steel siding is special order, typically 3–4 weeks. We stock white steel J-channel and 3/4″ steel outside corners. Now and then we have spare panels that come back from jobs, which can be handy for small repairs, so it’s worth calling to ask.
Yes. If you want a color that only SteelTek, SteelSide, Universal or Cedarwood steel offers, we can special order it. Tell us the color and we’ll confirm which line it comes in.
We can special order Gentek aluminum siding, but for most homes in the Magic Valley we recommend steel for its strength and hail protection.
No. We’re a supply-only company, so we don’t compete with installers. We’re happy to supply your contractor.
Yes. We deliver to job sites across the Magic Valley, Burley/Rupert, Mountain Home and the Wood River Valley, including Twin Falls, Kimberly, Filer, Wendell, Gooding, Hagerman, Burley, Rupert, Mountain Home, Hailey, Bellevue and Sun Valley.
Get Pricing on Steel Siding
Call or text with your square footage, profile and color, or email your plans for a material estimate.