Quick Answer: Two different warranties get conflated. The manufacturer warrants the product, and its remedy is usually replacement material only — not the labor to reapply it. The contractor warrants the application. Most disputes come from failures that fall between them, or from surface preparation that quietly voided both.
Less than the number on the front page suggests, and the gap is rarely where people expect it. A warranty is not a promise that the coating will last a stated time. It is a defined remedy for a defined failure, issued by a defined party — and a commercial coating job involves at least two of those parties, whose documents cover different things.
There are two warranties, and they are not the same instrument
**The manufacturer's material warranty** covers the product. It addresses the coating failing to perform as the manufacturer said it would — premature loss of adhesion, film failure, and similar defects attributable to the product itself.
**The contractor's workmanship warranty** covers the application. It addresses defects in how the product was prepared for, applied and finished.
They are separate documents, from separate parties, with separate claim processes. This matters because most real-world failures are arguable between them, and the party you call first will generally have a view about which one it is.
The distinction that surprises people
A material warranty's remedy is commonly limited to replacement product.
If the coating fails and the claim is honoured, what arrives is paint. The cost of erecting access, preparing the failed surface, removing the old coating and applying the new one is labor — and whether any of that is covered is a separate question the document either answers or does not.
That is why a long headline term is not, on its own, the useful number. A lengthy warranty whose remedy is material-only can be worth considerably less on a high or hard-to-access elevation than a shorter one that includes labor, because on that building the labor was always going to be the expensive part.
Read for the remedy before reading for the term.
What voids a warranty, and why it usually traces to preparation
Manufacturer warranties are conditioned on the product having been used as published. The recurring bases for denial are procedural rather than exotic:
- Surface preparation below the grade the data sheet requires for that system
- Film thickness outside the specified range — under-application and over-application both count
- Recoat windows missed, so intercoat adhesion was never properly developed
- Application outside the permitted temperature, humidity or dew-point conditions
- Substrate moisture content above the stated limit at time of application
- Thinning, tinting or mixing outside the published instructions
- Substitution of a primer or intermediate coat from another system
Notice how many of those are invisible once the job is finished and the coating looks correct. This is the practical link between a warranty and the documentation a contractor keeps: the recorded preparation grade, the film-thickness readings, the ambient conditions logged at application, and the batch numbers are what allows a claim to be substantiated years later. Without them, the burden falls on you to prove the job was done to spec, at exactly the moment the evidence has been painted over.
What is generally excluded
Exclusions vary by document and must be read in the document, but the categories recur:
- Failure of the substrate itself rather than the coating
- Moisture intrusion from a source other than the coated surface — roof, flashing, glazing, below-grade
- Structural movement, settlement and cracking
- Physical damage, impact, abrasion and abuse
- Colour change, fading and chalking, which are frequently limited or excluded outright, particularly for saturated colours in high-UV exposure
- Efflorescence, alkali burn and other substrate chemistry effects
- Mould and mildew growth driven by conditions rather than product
- Any repair or overcoat performed by a third party
The fading exclusion catches people. A building can be within its warranty term, with the coating fully intact and performing, and simply not look the way it did — and that is often not a claimable failure.
The single-source option
Some manufacturers offer a system warranty covering both material and labor. These are typically conditioned on the work being carried out by an approved applicator, to a specified system, with inspection at defined hold points and documentation submitted for acceptance.
They cost more, both in product and in process. They are worth considering where access is expensive, where the asset is long-hold, or where you want one party accountable rather than two who can point at each other. The inspection requirement is the point of them, not an obstacle to them.
What to ask before you award
- The actual warranty documents — both of them — before award, not after
- Whether the remedy includes labor and access, stated explicitly
- Whether coverage is prorated, and on what schedule
- Who performs the warranty inspection, at whose cost, and how a claim is initiated
- What documentation the contractor will retain and hand over: preparation grade, film-thickness readings, ambient conditions, batch numbers
- Whether the system is being installed exactly as the warranty requires, including primer and intermediate coats
- What happens to coverage if the building is sold, and whether it is transferable
The honest summary
The most valuable thing in a warranty is usually not its duration. It is whether the failures you can actually foresee on your building are inside or outside it, and whether the remedy is worth invoking when they happen.
A contractor who hands you both documents at bid stage and walks you through the exclusions is giving you the information you need to compare. One who leads with a number of years, and does not want to discuss the remedy, is selling the number.