Siding for St. Louis Area Homes
Casey Exteriors installs two siding systems: LP SmartSide, an engineered wood siding treated to the core for hail and moisture, and Royal Vinyl Siding by Westlake, a low-maintenance vinyl that never needs painting. Two materials means we can match the right siding to your home, your budget and how much upkeep you want, instead of selling you the only thing we carry.
Family owned since 1996. Compare both lines in person at our Arnold showroom.
Choose Your Siding
Both lines resist St. Louis weather and cut down on upkeep. They differ in material, texture, wind and impact rating, and how much maintenance they need over time. Click a line to explore it in full.
An engineered wood siding treated to the core with LP’s SmartGuard process, for a genuine wood look with hail and moisture resistance built in.
- Treated to the core: zinc borate, resins and wax through every strand
- Cedar Texture or Brushed Smooth, plus a board and batten profile
- 16 ExpertFinish colors or primed and ready to paint
- 5/50 Limited Warranty: 5 years full coverage, prorated through year 50
Casey Exteriors’ original siding line: a low-gloss cedar woodgrain vinyl that never needs painting, backed by Westlake’s Double Lifetime Warranty.
- Never needs painting, the lowest maintenance option we offer
- Low-gloss cedar woodgrain texture across the Royal line
- Colorscapes Premium shades with Chromatix color protection
- Wind rated up to 200 mph on select profiles, per Westlake
Signs You Need New Siding
Fading, chalking or peeling paint
Vinyl and ExpertFinish siding never need repainting. If you are painting every few years, it may be time to switch materials.
Warped, cracked or loose panels
Panels that buckle, crack or pull away from the wall let water behind the siding.
Rising energy bills
Old, thin or gapped siding lets conditioned air escape and outside air in.
Visible rot or soft spots
Soft or discolored areas near the bottom edge or around windows point to water getting behind the siding.
Mold, mildew or moisture stains
Persistent staining that cleaning won't remove is often a sign of trapped moisture, not just dirt.
You're tired of the upkeep
If you are done scraping, caulking and repainting, a low-maintenance material may be the better fit.
How a Casey Exteriors' Siding Project Works
Free estimate
We measure your home, check the existing siding and sheathing for damage and walk you through both siding lines.
Compare in person
See LP SmartSide and Royal Vinyl samples side by side in our Arnold showroom at 1366 Jeffco Blvd.
Custom ordered
Your siding, trim and fascia are ordered to your exact specifications.
Install and finish
Old siding out, new siding installed, sealed and trimmed, with cleanup and haul away.
Which is better, LP SmartSide or Royal Vinyl siding?
Neither is better for every home. LP SmartSide gives you the texture and grain of real wood, an engineered wood system, and hail damage coverage built into its warranty. Royal Vinyl never needs painting, carries a Double Lifetime Warranty and is rated for high winds. We price both at your estimate so you can compare.
Do I need to paint LP SmartSide or Royal Vinyl siding?
Royal Vinyl never needs painting. LP SmartSide with ExpertFinish, LP’s factory-applied color system, doesn’t either; only the primed, paint-ready LP SmartSide option needs paint, and that’s your choice if you want a fully custom color.
Is either siding rated for hail and severe weather?
Yes, in different ways. LP’s warranty covers hail damage up to 1.75 inches in diameter when properly installed and maintained. Westlake rates Royal Vinyl’s wind resistance up to 200 mph on select profiles.
How long do the warranties last?
LP SmartSide carries a 5/50 Limited Warranty: 5 years of full labor and material replacement, then prorated material coverage through year 50. Royal Vinyl carries Westlake’s Double Lifetime Warranty. Ask us for the full warranty documents for either line.
Do you install full siding replacements or just repairs?
We handle full siding replacements in both LP SmartSide and Royal Vinyl. If you have a smaller repair, ask us at your estimate and we’ll tell you what’s realistic for your situation.
Compare Both Siding Lines in Person
Stop by our showroom at 1366 Jeffco Blvd in Arnold, or book a free in home estimate. We will measure, price LP SmartSide and Royal Vinyl side by side and give you a clear quote.
LP, LP SmartSide, SmartGuard and ExpertFinish are trademarks of Louisiana-Pacific Corporation. Royal, Colorscapes and Chromatix are trademarks of Westlake Royal Building Products. Product features and warranty terms are summarized from manufacturer materials as of September 2026 and may change.