The paperwork a floor warranty runs on
A flooring warranty is a promise about the material, and it is a conditional one: the manufacturer sets limits for the slab the floor goes onto, and cover can be refused if the site was outside them or if nobody wrote down that it was inside. The conditions live in the installation document; the evidence lives in the installer's paperwork. When a floor fails, the two are read together, and a missing record is decided the same way as a failed reading.
What a warranty pays for when it does pay — the material alone, or the material and some part of the labour to lay the replacement — is set in each manufacturer's own warranty document, and this site does not record it. The schedule holds the conditions, not the remedy. An earlier version of this page opened by saying manufacturers do not warrant the job; nothing here supports that as a general statement, and the place to settle it for a particular floor is that manufacturer's warranty document, read before the work rather than after it.
Below is what those records are. The thresholds themselves differ by manufacturer — the schedule of limits holds the figures.
- 01
Slab moisture test
The method the manufacturer names, run under the conditions it names — in service temperature and humidity, not a bare shell.
- Installer produces
- Result per test location, the method used, the date and time, the ambient temperature and humidity, and how many locations were tested for the floor area.
- You keep
- A copy of the report, before any material is delivered.
This is the record that decides a moisture claim years later, and it is the one most often missing entirely.
- 02
Flatness check
Measured over the span the manufacturer states. A tolerance written over 10 feet is not met by a floor checked over 6.
- Installer produces
- The span used, the largest deviation found, and what was done about it.
- You keep
- The deviation figure and the remedy, in writing, before levelling is covered.
A floating floor over a slab outside tolerance flexes at the joints, and the failure shows up as a plank problem long after the subfloor is buried.
- 03
Acclimation
Where the manufacturer states a period, the material sits in the room for it.
- Installer produces
- Delivery date, the date installation started, and where the material was stored between them.
- You keep
- Both dates. Two lines on the job sheet is enough.
One manufacturer in the set read here publishes a waiting period; the rest set it at nought. The schedule carries the figure and not the conditions a document attaches to it — a period written for commercial work, or one that starts only if the material arrives cold, is a condition this site does not record, so a nought here is not a clearance. Keep both dates either way: two lines on a job sheet settle the question years later.
- 04
Product identity
The batch or lot actually laid, recorded against the room it went into.
- Installer produces
- Batch numbers, the supplier invoice, and the quantity taken from each batch.
- You keep
- The invoice and the batch numbers.
A warranty claim starts by identifying the product. A claim on material that cannot be traced to a purchase is a claim without a claimant.
- 05
Subfloor condition at hand-over
Clean, sound, and where the manufacturer states a pH range, inside it. Fasteners, patches and levelling compound recorded.
- Installer produces
- A short written statement of the subfloor as found and as prepared, dated.
- You keep
- That statement.
It is the only record of what was underneath once the floor is down, and the point where responsibility passes from the building to the floor.
This describes what the manufacturers read for this site require. It is not legal advice, it is not a contract template, and it does not tell you whether a particular job was done correctly. It tells you which records exist when it was, and which are missing when it was not.
The publisher of this site sells flooring materials and is not in the installation trade. Nothing here rates or recommends a contractor.