This document establishes that the product is no longer manufactured. Ply Gem reserves the right to discontinue or change any product, including design and colour, at any time without notice or liability, and disclaims liability where replacement product differs in gloss or colour from the panels originally installed.
DiscontinuedPly Gem · Siding · 2026 · 20 pages
Mastic vinyl siding, vinyl soffit and vinyl accessories
In their own words
Replacement products may differ in gloss and/or color from Products originally installed on the Property, and Ply Gem shall not be responsible or liable as a result of such variance.
Ply Gem — Mastic vinyl siding, vinyl soffit and vinyl accessories, 2026
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.
The same document also establishes
Mastic/Ply Gem states in full capitals that any repair performed without prior written authorization from Ply Gem voids the warranty entirely. The identical all-caps clause appears in the Variform warranty (naming Variform), so the two Cornerstone Building Brands documents share this language.
“ANY REPAIR OF THE PRODUCTS UNDERTAKEN WITHOUT PRIOR WRITTEN AUTHORIZATION FROM PLY GEM WILL VOID THIS WARRANTY.”
Products that have been subjected to unauthorized repair are an enumerated exclusion from coverage, listed separately from the all-caps void clause — so an unauthorised repair both voids the warranty and falls outside covered products.
“Products that have been altered, modified or subjected to unauthorized repair.”
Get the document
Mastic vinyl siding, vinyl soffit and vinyl accessories
Issued by Ply Gem. Published here complete — no summary standing in for the document, no email required.
Issued by Ply Gem. Retrieved from plygem.com, August 2026, and hosted here so it stays available in the version quoted above.
What to do with it
A carrier cannot direct you to buy something that is not sold. Once the product is off the market, the question stops being "can this be repaired" and becomes "can this building be restored with materials of like kind and quality" — which is a very different question, and one the carrier has to answer.
- 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 Ply Gem documents
Ply Gem vinyl siding, soffit, fascia and accessories
Vinyl siding moves. Every panel needs 1/32″ clearance at each fastener and 1/4″ at corners and channels to absorb thermal movement of half an inch or more across a 12′6″ run. Replacing one panel means unzipping the course above with a zip-lock tool, pulling the damaged panel’s nails, and re-engaging the lock afterwards — a sequence a quick patch rarely performs correctly.
Ply Gem vinyl siding and accessories
The companion manual, with the same fastening mechanics: nails centred in the slot, driven loose, never pinned. Siding that is face-nailed or fastened tight will buckle — and that is a workmanship failure introduced by the repair.
Other manufacturers saying the same thing
Atlas Chalet
Atlas discontinued the Chalet 30-year laminated shingle in mid-2010 and replaced it with the Pinnacle HP line. Chalet went onto tens of thousands of Georgia homes, and it is the single most common discontinued-shingle dispute in this market.
Atlas Chalet
Atlas’s follow-up letter goes further than the discontinuation itself: the Chalet’s proprietary design and physical size differ from current production, so combining old and new raises ASTM compliance problems.
Atlas GlassMaster
Atlas Roofing Corporation confirms in writing that the GlassMaster shingle is no longer manufactured.
Atlas StormMaster Slate
Discontinued effective January 1, 2023. Atlas did not just retire the product — it stated on the record that nothing else in the market matches it.
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 877-650-3515