Siding Warranty Comparison: What Each Brand Covers

James Hardie Fiber Cement Warranties

Substrate warranty: 30 years, non-prorated, covering manufacturing defects in the fiber cement material. This means Hardie covers repair or replacement at full cost for the entire 30-year period with no declining-value schedule. The non-prorated structure is one of the strongest in the siding industry and reflects Hardie's confidence in their product quality.

ColorPlus finish warranty: 15 years, non-prorated, covering peeling, cracking, chipping, and fading beyond acceptable limits. This is a separate warranty from the substrate warranty and applies only to factory-finished ColorPlus products, not to primed products that are field-painted. The 15-year finish warranty is significantly more valuable than any protection provided by field-applied paint, which comes with no manufacturer backing on the siding.

Transferability: Both warranties transfer to subsequent homeowners, which supports resale value. The new owner receives the remaining warranty coverage without needing to file any transfer paperwork.

What voids it: Installation that does not follow Hardie's published installation instructions. Failure to maintain the siding (allowing paint to deteriorate to bare substrate on primed products, failing to maintain caulk joints). Use of unapproved fasteners, finishes, or accessories. Damage from fire, impact, acts of nature, or structural settlement.

See our James Hardie guide for detailed product and installation information.

LP SmartSide Engineered Wood Warranties

Substrate warranty: 50 years, limited, covering manufacturing defects including rot and termite damage to the substrate. The 50-year term is the longest among mainstream siding products. The warranty is limited in that LP defines the remedy (repair or replacement at their option) and may prorate the coverage in later years depending on the specific warranty version that applies to your product.

Finish warranty: LP offers a 5-year finish warranty on their factory-primed product and a 15-year finish warranty on their ExpertFinish factory-painted product. The ExpertFinish warranty is comparable to Hardie's ColorPlus finish warranty and covers peeling, cracking, and excessive fading.

Transferability: The warranty transfers to one subsequent owner. The transfer must be registered with LP within 60 days of the property sale.

What voids it: Installation not following LP's installation guide. Standing water or persistent moisture contact (siding installed below required clearance from grade). Failure to paint primed products within 180 days of installation. Use of improper cleaning methods (pressure washing above recommended PSI).

See our engineered wood guide for material details.

Vinyl Siding Warranties (Major Brands)

CertainTeed: Lifetime limited warranty (defined as 50 years) with non-prorated coverage for the first 10 years and declining prorated coverage thereafter. The non-prorated period was extended from 5 years to 10 years in recent warranty revisions, making it one of the better vinyl warranties available.

Alside: Lifetime limited warranty with non-prorated coverage for the first 7 years. After 7 years, the warranty value decreases by a fixed percentage each year. Alside also offers a premium Charter Oak line with enhanced warranty terms including longer non-prorated periods.

Ply Gem: Lifetime limited warranty with non-prorated coverage for the first 5 to 7 years depending on the product line. Ply Gem's premium Mastic brand offers longer non-prorated periods than their standard lines.

What "lifetime" actually means for vinyl: Vinyl siding "lifetime" warranties sound comprehensive but have significant practical limitations. The warranty covers manufacturing defects in the vinyl material only, not fading, weathering, or color change beyond specified limits. After the non-prorated period (5 to 10 years), the warranty value declines annually, so a claim at year 20 might pay only 30% to 50% of the replacement material cost. Labor is never covered by vinyl siding warranties. Since labor typically accounts for 50% to 60% of siding replacement cost, even a successful warranty claim at year 15 might reimburse only 10% to 25% of the actual cost to fix the problem.

Transferability: Most vinyl warranties transfer to one subsequent owner with the warranty value reduced by 50% (the subsequent owner receives half the coverage of the original purchaser).

Metal Siding Warranties

Paint finish warranties: Quality metal siding with PVDF (Kynar) finishes carries a 30 to 40-year paint warranty covering fading, chalking, and peeling. This is the longest paint warranty available on any siding material and reflects the exceptional durability of factory-applied fluoropolymer coatings. Less expensive metal siding with polyester paint finishes carries 20 to 25-year paint warranties.

Substrate warranties: Steel siding carries 20 to 40-year warranties covering rust-through. Aluminum siding carries longer substrate warranties (often "lifetime") because aluminum does not corrode in the same way steel does. The practical lifespan of both materials exceeds the warranty period.

See our metal siding guide for material comparison.

What Warranties Actually Cover (and What They Do Not)

Covered by most warranties: Manufacturing defects in the siding material (delamination, structural failure, excessive warping not caused by installation error). Color fade or paint failure beyond specified limits (varies by manufacturer). Rot or insect damage to the substrate during the warranty period (engineered wood and fiber cement).

Not covered by any warranty: Labor costs for removal and reinstallation. Damage from improper installation (this is the most common warranty denial reason). Damage from fire, storms, hail, impact, or other external forces. Damage from improper maintenance or failure to maintain the siding. Normal weathering, minor color change, and surface dirt accumulation. Consequential damages (damage to other building components caused by siding failure).

The labor exclusion is the most important limitation. Because labor represents the majority of the cost to fix a siding problem, a warranty that covers only materials provides significantly less protection than the headline coverage implies. A warranty that pays $2,000 for replacement materials when the total repair cost is $8,000 (including $6,000 in labor) provides only 25% of the actual remedy cost.

How to File a Warranty Claim

If you believe your siding has a manufacturing defect or the finish has failed prematurely, the warranty claim process typically follows these steps. First, document the problem thoroughly with photographs showing the specific defect, the overall wall condition, and any labels or markings on the affected panels that identify the product. Second, contact the manufacturer's warranty department (not your contractor, unless the contractor offers their own workmanship warranty for labor). Most manufacturers have online claim submission forms and phone-based claim centers. Provide your installation date, product information, and the nature of the defect.

The manufacturer will typically send a field representative or request that you send samples of the defective material for laboratory analysis. This analysis determines whether the failure is a manufacturing defect (covered) or the result of installation error, inadequate maintenance, or external damage (not covered). The investigation process takes 2 to 8 weeks depending on the manufacturer and the complexity of the claim. If the claim is approved, the manufacturer provides replacement material (and in some cases, a cash settlement for the prorated value). Remember that labor is almost never covered, so you will need to hire a contractor to perform the actual repair or replacement.

The most common warranty claim denials result from improper installation (the manufacturer's inspector identifies fastening patterns, flashing details, or substrate conditions that violate the installation instructions), deferred maintenance (the homeowner failed to maintain the finish, allowing the substrate to be compromised), and product misidentification (the homeowner believes they have one manufacturer's product but actually have another). Keeping your installation documentation and maintenance records organized prevents the second and third denial reasons.

How to Protect Your Warranty Coverage

Document the installation. Photograph the installation at key stages (weather-resistant barrier, flashing details, fastener patterns, completed siding). If a warranty claim is ever filed, photos showing proper installation are the most effective evidence that the siding was installed according to manufacturer specifications.

Keep records. Save the purchase receipt, warranty registration (if required), contractor agreement, and any manufacturer literature that came with the siding. Some manufacturers require warranty registration within a specified period after installation.

Follow the maintenance requirements. Every warranty has a maintenance clause that requires the homeowner to maintain the siding in reasonable condition. This typically means cleaning the siding periodically, repainting before the finish deteriorates to bare substrate, maintaining caulk joints, and repairing damage promptly. See our siding maintenance schedule for specific timelines by material.

Use an approved installer when possible. While most warranties do not require a manufacturer-certified installer, using one (such as a James Hardie Preferred Remodeler) provides additional protection because the manufacturer's trained contractor is less likely to make installation errors that could void the warranty.