Vinyl vs. Fiber Cement vs. LP SmartSide: Which Siding Holds Up Best in Missouri Weather?
If you’re choosing siding for your home in St. Louis, you’ve probably already realized something frustrating — every contractor recommends a different material, and every manufacturer claims theirs is the best.
Here’s the truth from someone who’s installed all three across the metro for years: there’s no single “best” siding for Missouri weather. There’s the right siding for your home, your budget, and your tolerance for maintenance. Once you understand how each material actually performs in our climate — humid summers, freeze-thaw winters, the occasional 70-mph wind event, hail every couple of years — the choice gets a lot clearer.
This is the honest comparison we wish more homeowners had before making a five-figure decision.
What Missouri Weather Actually Does to Siding
Before we get into specific products, let’s talk about what your siding is up against in St. Louis.
Summer humidity sits at 70%+ for months. That’s bad news for any material that holds moisture. Winter brings freeze-thaw cycles where temperatures swing from 50°F to 15°F in 48 hours — water seeps in, freezes, expands, and breaks things. Hail hits us regularly. UV exposure is brutal in July and August. And we get enough wind events that any siding has to be installed correctly to stay attached.
Any material claim you read needs to be filtered through this question: how does it perform under those four stressors specifically? A siding that holds up beautifully in Arizona may fail in five years here.
Vinyl Siding
Vinyl is the most common siding in the St. Louis area, and for good reason — it’s affordable, low-maintenance, and modern vinyl looks dramatically better than the warped, faded stuff you remember from the ’90s.
The good:
- Lowest upfront cost of the three (typically $4–$9 per square foot installed)
- Zero maintenance — never paint, never stain, just rinse occasionally
- Comes in dozens of colors and profiles
- Insulated vinyl options improve energy efficiency and impact resistance
- Won’t rot, won’t get eaten by termites, won’t grow mold
The honest downsides:
- Cheaper grades fade noticeably after 10–15 years, especially on south-facing walls
- Standard vinyl can crack in extreme cold (below 0°F) if hit hard — kid throwing a baseball, riding lawnmower throwing a rock
- Hail damage is real on thin grades — premium thicker vinyl handles it better
- Looks like vinyl. The high-end profiles are excellent, but it’s not going to fool anyone into thinking it’s wood
- Wind can pull poorly-installed panels off — quality of installation matters more than the material itself
How it actually holds up in Missouri: Properly installed premium vinyl (.046″ thickness or higher) on a St. Louis home will look good for 25–30 years. Builder-grade vinyl (the cheapest tier) starts showing fade and minor warping by year 12–15.
Best for: Budget-conscious homeowners, rental properties, homes in lower-end neighborhoods, anyone who values “set it and forget it” over premium aesthetics.
Fiber Cement Siding (James Hardie, Allura, Nichiha)
Fiber cement — most commonly James Hardie’s HardiePlank — is the premium siding choice in the St. Louis market. It’s made from a mix of cement, sand, and cellulose fibers, and it looks remarkably like wood when installed well.
The good:
- Genuinely looks like real wood from the street
- Holds paint exceptionally well — modern factory finishes last 15+ years before needing repaint
- Fire-resistant (it’s literally cement-based)
- Won’t rot, won’t warp, won’t be eaten by anything
- Holds up to hail better than vinyl
- Adds significant resale value compared to vinyl
- Available in pre-finished colors with strong warranties (Hardie’s ColorPlus is 15 years)
The honest downsides:
- Expensive: typically $10–$16 per square foot installed in our market
- Heavy. Installation takes longer and requires experienced crews — bad installs are more common with cheap contractors
- Not fully maintenance-free — caulk lines need inspection every few years, and unpainted cut edges need to be sealed
- Will eventually need repainting (15–20 years out for factory finish, sooner for site-painted)
- Brittle if mishandled during install — corners can chip
- Some homeowners hate the texture, which can read as artificial up close even though it looks great from the curb
How it actually holds up in Missouri: Excellent. Fiber cement is essentially impervious to our humidity and freeze-thaw cycles. The most common failure mode in our climate is caulk shrinking and cracking around windows and corners — that’s a 5–7 year maintenance item, not a siding failure.
Best for: Homeowners in upper-middle and high-end neighborhoods (Chesterfield, Wildwood, Town and Country, Ladue), people staying long-term, anyone who wants a real “wow factor” exterior.
LP SmartSide (Engineered Wood)
LP SmartSide is the newer competitor in this space — engineered wood treated with zinc borate to resist rot and insects. It’s gained serious traction in the Midwest in the last decade because it splits the difference between vinyl and fiber cement on price and performance.
The good:
- Looks more like real wood than fiber cement (deeper grain, warmer feel)
- Lighter than fiber cement, which means easier installation and lower labor cost
- Less prone to chipping or cracking during installation than fiber cement
- Strong impact resistance — handles hail better than vinyl, comparable to fiber cement
- 50-year limited warranty
- Pre-finished options available with 15-year finish warranties
- Costs about $8–$13 per square foot installed — between vinyl and fiber cement
The honest downsides:
- It’s still wood at the core. If water gets behind it through bad flashing or installation errors, it can swell and rot — though far slower than untreated wood
- Long-term track record is shorter than vinyl or fiber cement (LP SmartSide in its current formulation has been around since the early 2000s — solid, but not 50+ years of field data)
- Will need repainting eventually like fiber cement
- Not as fire-resistant as cement-based products
- Some early generations of engineered wood siding had failure issues, which made the broader category nervous — though LP SmartSide specifically has performed well
How it actually holds up in Missouri: Very well, when installed correctly with proper flashing and moisture management. The installation is the variable here more than with vinyl. We’ve seen 12-year-old LP SmartSide jobs that look almost new, and we’ve seen 5-year-old jobs starting to fail because the installer didn’t manage water properly at penetrations.
Best for: Homeowners who want the look of fiber cement at a lower price, anyone in mid-range neighborhoods, people who want better impact resistance than vinyl without the cost of Hardie.
| Factor | Vinyl | Fiber Cement | LP SmartSide |
|---|---|---|---|
| Cost installed | $4–$9 / sq ft | $10–$16 / sq ft | $8–$13 / sq ft |
| Lifespan | 25–30 years (premium) | 40–50+ years | 30–40+ years |
| Maintenance | None | Caulk + paint over time | Caulk + paint over time |
| Looks like wood | Not really | Yes, from the curb | Yes, even up close |
| Hail resistance | Fair (premium) | Good | Good |
| Cold tolerance | Brittle below 0°F | Excellent | Excellent |
| Fire resistance | Poor | Excellent | Fair |
| Resale value boost | Moderate | Strong | Moderate-Strong |
| Best installer skill required | Standard | Experienced | Experienced |
What We Actually Recommend in St. Louis
After installing all three for years across the metro, here’s how we typically guide homeowners:
Choose vinyl if: You want low cost and zero maintenance, you’re in a rental or starter home, or you’re staying 5–10 years and don’t want to over-invest in the exterior. Go with a thicker premium grade — don’t cheap out on builder-grade.
Choose fiber cement (James Hardie) if: You’re in an established neighborhood where it’s the expected exterior, you’re staying long-term, you want maximum resale value, or you genuinely want the premium look. Worth the investment if the budget allows.
Choose LP SmartSide if: You want fiber cement aesthetics at a lower price, your home is in a mid-range neighborhood where Hardie would be over-investment, or you’re prioritizing impact resistance and a real wood look without the cost ceiling.
What we don’t recommend: bottom-tier vinyl on a high-end home (it’ll look out of place and hurt resale), or fiber cement installed by a crew without experience handling it (the bad installs really are bad).
What Insurance Will and Won’t Cover
Worth a quick note since we get this question constantly. If your siding is damaged by a covered event — hail, wind, fallen tree — your homeowners insurance typically covers replacement. Hail damage on siding is real and frequently underclaimed.
What insurance won’t cover is age-related fading, normal wear, or upgrading to a better material than what was there. If your old vinyl gets hailed out, insurance pays to replace it with comparable vinyl. You can pay the upgrade difference if you want to switch to fiber cement or LP SmartSide.
After hailstorms in St. Louis, we always recommend an inspection. Siding damage is harder to spot than roof damage, and claims have filing windows.
Frequently Asked Questions
How long does a siding replacement take in St. Louis?
For a typical 2,000-square-foot home, most siding replacements take 5–10 days, weather permitting. Larger homes or complex profiles can run 2–3 weeks. We usually start one section at a time so the home is never fully exposed.
Can I add siding over existing siding?
Almost never recommended. It traps moisture, hides existing damage, adds weight, and looks worse than starting fresh. The right approach is removing the old siding, inspecting and repairing the sheathing underneath, and installing properly with new house wrap.
Does new siding actually save energy?
Modestly, yes — especially insulated vinyl or fiber cement installed with new house wrap. The bigger energy gains come from sealing air leaks during installation. Don’t expect to slash your utility bill, but a 5–10% improvement is reasonable.
What’s the most common siding installation mistake?
Poor flashing around windows and doors. Water gets behind the siding, the sheathing rots, and you don’t know until major damage is already done. This is why installer experience matters as much as material choice.
Will my HOA allow my siding choice?
Many St. Louis HOAs have approved siding lists. Always check before signing a contract. Most allow all three of these materials in approved colors, but some restrict vinyl or specific colors.
Get a Real Recommendation for Your Home
The right siding depends on your home, your neighborhood, your budget, and how long you plan to stay. There’s no universal answer — there’s the right answer for you.
Covenant Contracting offers free siding consultations across the St. Louis metro — Fenton, Wildwood, Ballwin, Chesterfield, St. Peters, Grover, Valley Park, and surrounding areas. We’ll walk your home, look at your existing siding and sheathing, talk through your goals and budget, and give you an honest recommendation. We install all three of these materials, so we have no incentive to push one over another.
Request Your Free Siding & Exteriors Or call (314) 282-1991 to schedule directly.
