This document preserves what the original product actually was — the standard any substitute has to meet. Corian publishes projected 10-year colour-change groupings in Delta-E*94 units (ASTM D2244), derived from ASTM G155 accelerated weathering and Florida outdoor exposure, quantifying that solid surface drifts in colour over time; the bulletin is scoped to exterior applications, so it evidences the mechanism of colour drift rather than an interior match standard.
Specification DuPont · Interior finishes · 4 pages
Corian Solid Surface sheet — Colour Fastness and Exterior Use technical bulletin
In their own words
Group 2 – Color change of 5 to 15 ΔE*94 units in 10 years – good choices if some color change is not objectionable.
DuPont — Corian Solid Surface sheet — Colour Fastness and Exterior Use technical bulletin
That sentence is not our characterisation of the manufacturer’s position. It is the manufacturer’s position, in the document below, which you can read yourself in about a minute.
Get the document
Corian Solid Surface sheet — Colour Fastness and Exterior Use technical bulletin
Issued by DuPont. Published here complete — no summary standing in for the document, no email required.
Issued by DuPont. Retrieved from corian.com, August 2026, and hosted here so it stays available in the version quoted above.
What to do with it
When the original product is gone, the argument moves to what counts as an equivalent. That argument is unwinnable without the original specification in hand — weight, dimensions, exposure, ratings, warranty. This is that document.
- You have the manufacturer’s document. That part is finished. Most homeowners never get this far, and it is the step a carrier cannot argue with — it is not your opinion, it is the company that made the product.
- Put it in writing, to the adjuster, with the claim number. Attach the document and ask one specific question: name the exact replacement product — manufacturer, line, colour, dimensions, exposure, nail zone, sealant design, supplier, quantity available locally — and who will answer for the repair if it fails. Vague answers are the whole game; a specific question ends it.
- Get the position on the record before anything gets installed. Once a mismatched or incompatible repair is on the building, you are arguing about something already done.
If you want the second and third steps handled by someone who does this for a living, that is what we are for — and the review costs nothing. If you would rather do it yourself, the document above is yours either way. That is the point of publishing it.
Related documents
Other manufacturers saying the same thing
CertainTeed Independence Designer
The manufacturer’s bulletin for a discontinued premium shake-look shingle — Shangle design, 300 lbs. per square, UL Class A, Class 1 impact rated. When the original product is gone, this is the specification a proposed substitute has to be measured against.
CertainTeed Independence Designer
The full original colour range for a shingle you can no longer buy: Burnt Sienna, Charcoal Black, Colonial Slate, Cottage Red, Driftwood, Georgetown Gray, Hamilton Blue, Heather Blend, Hunter Green, Weathered Wood.
CertainTeed Independence
The original fastening, underlayment and steep-slope requirements for the Independence shingle — including the cement-and-extra-fastener rule above 21″ per foot that a partial re-nail has to reproduce.
GAF-Elk Country Mansion Lifetime Designer
The manufacturer’s own brochure for a shingle no longer available: specifications, warranty terms, wind ratings and system components. This is the standard a proposed replacement has to meet.
The rule this document serves
Your policy promises repair or replacement with material of like kind and quality. That is a replacement-cost and indemnity obligation, not an appearance theory — and it is why “matching” is the carrier’s word, not the policy’s. Where the installed product cannot be bought, or cannot be combined with what is still sold, the covered building cannot be restored to like kind and quality by patching it, and that is true before anyone argues about how it looks. The full doctrine, and the other 125 documents, are on the discontinued materials hub.
You have the manufacturer's document. The next part is the argument. Handing a carrier a technical bulletin and getting it honoured are two different jobs. The case review is free, and you pay nothing unless we recover.
See if my case qualifies 770-230-2616