When hail or wind damages a few panels of siding and the carrier scopes only a partial repair, one question decides whether the patch will actually look right: can the original siding still be sourced? Most siding more than a few years old has been discontinued or quietly reformulated. ITEL Laboratories tests a small sample and documents the manufacturer, line, color, and availability — and that report is what moves a partial-repair conversation toward full-elevation replacement when policy language supports it.
ITEL Laboratories is an independent third-party material testing lab. They've been around since 1997 and built a reference library of building-material samples — vinyl, engineered wood, fiber cement, roofing shingles, flooring — covering the full history of products sold across the U.S. residential market.
The process is simple. A small physical sample of the existing material — typically a single panel of vinyl siding from an inconspicuous spot, or a section of fiber-cement plank — gets sent to the lab. ITEL identifies the manufacturer, the product line, the color, and crucially, whether that exact product is still available for purchase today. The result is a written report that's accepted by all major insurance carriers.
The report is the documentation. Without it, the conversation about whether the siding can be matched is opinion versus opinion. With it, the conversation moves to facts.
Three conditions usually have to line up for ITEL to be the right tool:
If any of these is missing, ITEL doesn't help. On a full-house siding replacement where the homeowner is selecting a new product anyway, the question doesn't matter. On a small repair where the original line is still in production, the patch will match and there's no scope expansion to be had.
An ITEL siding report typically documents:
The report is signed and stamped by the lab. Carriers accept it as evidence; they don't generally re-test independently.
When the report shows the original siding is still available — the patch can be installed cleanly, and the partial-repair scope holds. The carrier paid for what was needed; the homeowner gets a clean fix.
When the report shows the original siding is discontinued and no exact match is available — the policy's "like-kind-and-quality" or "matching" language becomes operative. Most carriers, when shown a credible ITEL report demonstrating non-availability, will either accept a scope expansion to a full elevation (or a full house) so the home can be restored to a uniform appearance, or offer a cash settlement equivalent to that scope. The exact outcome depends on the policy language.
The conversation between the homeowner and the carrier remains the homeowner's conversation. Reliant produces the documentation; the homeowner submits it. Under Missouri RSMo § 407.725, that's where the line is — see the Insurance Claims in Missouri page for the full mechanics.
A few cases where pulling an ITEL sample wouldn't help:
On a partial-damage siding inspection where the matching question is real, Reliant pulls the sample as part of the inspection. The sample goes to the lab. The report comes back in a few business days. The report becomes part of the documented scope handed to the homeowner. From there, the homeowner decides whether and how to share it with the carrier.
The mechanics of a full siding replacement — vinyl, LP SmartSide, and James Hardie — are on the Siding Replacement page.
ITEL Laboratories is an independent third-party material testing lab. They identify the manufacturer, line, color, and current sourcing availability of building materials — including vinyl siding, fiber cement, engineered wood, roofing shingles, and flooring — based on a small physical sample.
When a carrier scopes only a partial siding replacement (one or two damaged panels, or a single elevation), the question that decides what's actually achievable is whether the original siding can be sourced and matched. Older vinyl, engineered wood, and fiber-cement siding lines are routinely discontinued or quietly reformulated; the panels still on the home no longer match what's available at retail. An ITEL report documents that mismatch in writing.
Most policies include "like-kind-and-quality" or "matching" or "uniform appearance" language that describes how the carrier should restore property to pre-loss condition. When the original siding cannot be matched, that policy language can support a scope expansion from partial repair to full-elevation or full-house replacement. The ITEL report is the documentation that lets the homeowner have that conversation with their carrier.
No. ITEL is the right tool when (a) the damage is partial, (b) the original siding line is plausibly discontinued or reformulated, and (c) a match question would meaningfully change the scope. On full-elevation or full-house replacement claims, where the homeowner is choosing a new product anyway, ITEL is unnecessary.
On most siding claims where Reliant pulls the sample, we cover the lab cost as part of the documentation. If the report supports a scope change and the carrier accepts the supplement, the documentation cost is generally absorbed into the claim. If you want to commission an ITEL report independently, the lab works directly with homeowners as well.
We document the damage, pull a sample if matching is in question, and hand the lab report back to you. From there, the conversation with your carrier stays your conversation — under Missouri law, that's how it works.
