Gentek Vinyl Siding · In Stock in Twin Falls
Vinyl Siding in Twin Falls, Idaho
Gentek Sequoia Select (.046) and Signature Supreme (.044) vinyl siding, stocked in 17 colors with all the trim to finish the job. Pick up today or get it delivered to your job site anywhere in the Magic Valley.

In stock, not special order
Sequoia Select & Signature Supreme
Same-day pickup
299 Addison Ave W, Twin Falls
Job-site delivery
Twin Falls to Sun Valley & Burley
Trade pricing
Contractor accounts & invoicing
Gentek Vinyl Siding, Stocked Locally
Canyon Exteriors Supply Company is an exterior-only supplier in Twin Falls. We keep Gentek vinyl siding in stock so contractors and homeowners don’t have to wait weeks on a special order or settle for whatever a big box store has on the shelf.
We stock two Gentek lines. Signature Supreme is a premium .044″ panel with a 5/8″ butt and a low-gloss hardwood texture, a great value for new construction, re-sides and rentals. Sequoia Select is Gentek’s ultra-premium .046″ panel with a deeper 3/4″ butt and a rich cedar-grain emboss. It’s thicker and more rigid, so walls look straighter and hold up better to Magic Valley wind.
Every panel color is designed to work with Gentek’s matching soffit, fascia and trim, so the whole exterior coordinates. Not sure which thickness or color fits your project? Stop by and we’ll walk you through it.
What We Stock
| Product | Details | Good for |
|---|---|---|
| Gentek Sequoia Select (.046″) | Ultra-premium; 3/4″ butt; cedar-grain emboss; D4 & D5 clapboard, D4.5 & D5 Dutch, 7″ board & batten (.050″) | Custom homes, windy sites, long walls |
| Gentek Signature Supreme (.044″), incl. Double 5″ Dutch Lap | Premium; 5/8″ butt; hardwood texture; D4 & D5 clapboard and Dutch; sold by the square | New builds, re-sides, rentals |
| 3½″ Outside Corner Post · ¾″ Inside Corner Post | Color-matched vinyl | Clean corners |
| ¾″ Vinyl J-Channel · 2½″ Steel Starter Strip | Trim & starter | Windows, doors, rooflines, first course |
| Mount blocks · Vents · Furring strips | Accessories | Lights, outlets, hose bibs, dryer vents |
Call to confirm which profiles are on the shelf today. Gentek .042″ and .040″ siding, plus any color or profile we don’t stock, is available by special order (typically 3–4 weeks).
Vinyl Siding Colors In Stock
These Gentek colors are on our shelves in Twin Falls. The darker designer colors use Gentek’s ChromaTrue® fade-defying technology. Come see full-size samples in person, because colors look different in Idaho sun than they do on a screen.
Classic colors: Snow White, Linen, Sandstone, Maize, Almond, Monterey Sand, Wicker, Canyon Clay, Pebble, Pearl, Dover Gray, Sage
Designer colors: Dark Drift, Meadow Fern, Storm, Chesapeake Gray, Hudson Slate
Stock changes daily, so call ahead to confirm a color before you make the trip.

Why Vinyl Siding Works in the Magic Valley
Handles wind
Southern Idaho wind is hard on siding. Full-roll nailing hems and tight panel locks hold both lines on the wall, and the thicker .046″ Sequoia Select panel is stiffer still.
Freeze-thaw proof
Vinyl doesn’t absorb water, so it won’t rot, swell or crack through our winter freeze-thaw cycles the way wood can.
No painting, ever
The color runs through the panel. There’s nothing to scrape, paint or stain, just an occasional rinse with a hose.
Fast to install
Lightweight panels go up quickly with standard tools, which keeps labor costs down and projects on schedule.
Coordinated look
Gentek siding, soffit, fascia and trim colors are designed to match, so the whole house looks finished.
Lifetime warranty
Both lines carry Gentek’s lifetime limited, non-prorated, transferable warranty with hail protection and lifetime fade coverage.
For Contractors & Builders
- Stock quantities for production and custom builds
- Trade pricing, invoicing and contractor accounts
- Job-site delivery scheduled around your crew
- Send your customers to pick colors; we’ll send you the specs
- Basic material estimates from your plans
For Homeowners & DIYers
- We sell to the public, no contractor license needed
- See real samples and get honest advice on thickness and color
- Help figuring out what else you need: trim, J-channel, corners, blocks
- We’re supply-only, so we’re happy to work with any installer you choose
Shop Vinyl Siding & Accessories
Everything to Finish the Job
Siding is only part of the exterior. We stock the pieces that go with it:
- Aluminum soffit: vented and solid Gentek T4 panels in matching colors
- Aluminum fascia: 6″ and 8″ Gentek fascia to wrap rooflines
- Trim coil for custom-bent window and door wraps
- ASCEND composite cladding if you want a premium, board-and-batten or insulated upgrade
- Gentek SteelTek Supreme steel siding for maximum hail and fire resistance (special order)
- Gutter coil & rainware to finish the roofline
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
The number is the panel thickness in inches. We stock Gentek Signature Supreme (.044″, 5/8″ butt) and Sequoia Select (.046″, 3/4″ butt). The thicker Sequoia Select panel is more rigid and casts a deeper shadow line, so walls look straighter and more like real wood. Signature Supreme is a premium panel at a lower price. Come compare them side by side. Thinner .042″ and .040″ panels are available by special order.
Both Sequoia Select and Signature Supreme are backed by Gentek’s lifetime limited, non-prorated, transferable warranty with hail protection and lifetime fade coverage. Ask us for a copy of the warranty.
Yes. We keep Gentek Sequoia Select (.046″) and Signature Supreme (.044″) vinyl siding and the matching trim in stock at 299 Addison Ave W, Suite B, in Twin Falls. Stock changes daily, so call 208-539-0851 to confirm your color before you come in.
Siding is sold by the square (100 square feet). Measure each wall (height × width), subtract large openings and add about 10% for waste and cuts. Send us your plans and we can give you a basic material estimate. Your installer should still do a final takeoff before ordering.
No. We’re a supply-only company, so we don’t compete with installers. We’re happy to supply your contractor, and many local installers already buy from us.
Absolutely. Homeowners and DIYers are welcome. We’ll help you choose a thickness and color and make sure you leave with all the trim and accessories you need.
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.
Ready to Price Your Siding Job?
Call or text us with your square footage and color, or email your plans for a material estimate. Most orders are ready same-day.




