Sep 10, 2026 · 10 min read

PPGI Color Fade Warranty: What to Expect

A realistic PPGI color fade warranty is usually a limited, pro-rata or stepped guarantee against excessive chalking and color change on the painted face of the coil, typically measured against a defined standard and expressed in years from delivery or installation — not a promise that the roof will look new for that period. Most supplier warranties cover coating defects such as peeling, blistering, cracking and flaking under defined conditions, and exclude edge corrosion, cut edges, scratches, site damage, chemical exposure, and color change below a stated threshold. The exact numbers, measurement method, exclusions and claim procedure are contract-specific: you must read the warranty document, not the sales brochure.

Why “20-Year Warranty” Means Very Little on Its Own

A headline figure such as “15-year color warranty” is only meaningful when it is tied to four things: what is measured, how much change is allowed, who pays for what, and what conditions void it.

What is measured: color change (ΔE), chalking rating, gloss retention, or film integrity (adhesion, cracking, peeling).
How much change is allowed: a ΔE limit, a chalking rating per a defined scale, or a percentage of gloss loss.
Who pays: full replacement, material-only replacement, pro-rata credit, or repair.
What voids it: environment, forming method, fixing practice, cleaning regime, contact with incompatible materials.

Two suppliers can both advertise “15 years” while covering completely different risks. One may cover only film adhesion; the other may include a color-change limit. Treat the warranty text as a specification document and compare it line by line.

What a Typical PPGI Warranty Covers

Film integrity defects

Most coil coaters and their downstream suppliers warrant the paint film against defects that originate in the coating process or the coated product itself, when the material is correctly stored, formed, installed and maintained. Typical covered items include:

Peeling or loss of adhesion of the paint film from the metallic coating
Blistering not caused by trapped moisture, condensation or site contamination
Cracking or flaking of the paint film under normal atmospheric exposure
Chalking beyond an agreed rating

Color change, usually with a threshold

Where color is covered, it is normally expressed as a maximum permissible color difference after a stated exposure period, measured on a cleaned, unweathered-but-exposed area against an unexposed reference sample of the same material. The threshold, the test method, the exposure orientation and the inspection conditions all matter.

Metallic coating performance

Because paint performance depends on the substrate beneath it, warranties often reference the metallic coating — for example the zinc coating mass on a hot-dip galvanized substrate. If you are comparing substrates, see GI coil for the base material that many PPGI products are produced from. If the zinc coating is underspecified for the environment, a paint warranty alone will not prevent red rust at cut edges and scratches.

What PPGI Warranties Typically Exclude

Exclusions are where most disputes begin. Common exclusions include:

Cut edges and drilled holes: bare steel exposed by cutting, punching or profiling is normally excluded from both corrosion and color warranties.
Site damage: scratches, scuffs, abrasion from handling, foot traffic, tools and scaffolding.
Edge corrosion and creep from edges: frequently excluded or limited, because it depends on detailing, sealing and maintenance.
Chemical and atmospheric attack: acids, alkalis, salts, industrial fallout, animal waste, fertilizers, and aggressive marine or industrial environments beyond the agreed exposure category.
Incompatible contact: contact with untreated timber, fresh concrete, mortar, copper, lead or other dissimilar metals that can accelerate corrosion.
Water trapping: ponding, capillary retention at laps, unsealed joints, or condensation on the reverse side.
Reverse side and hidden surfaces: warranties often apply only to the exposed, weather-washed face.
Improper storage, forming, fixing or maintenance: including forming the sheet below the recommended minimum bend radius, or using incompatible sealants and fasteners.
Color change below the stated threshold: normal, gradual fading or chalking within the allowed limit is not a claim.
Consequential and indirect losses: labour, access equipment, loss of use, business interruption.

Some warranties also reduce coverage over time — full replacement in early years, then a declining or pro-rata percentage. Ask for the schedule in writing.

Decision Table: Matching Warranty Scope to Your Project

Project condition	Warranty scope to prioritise	Specification questions to ask
Rural or low-corrosivity inland site	Film integrity plus a defined color-change limit	What ΔE or chalking limit applies, measured how?
Urban or light industrial	Color retention and chalking, plus metallic coating mass	Which exposure category is assumed, and what zinc mass backs it?
Coastal or heavy industrial	Corrosion at cut edges and fixings, plus coating system class	Is edge corrosion excluded? What maintenance is required to keep cover?
Exposed roofing, weather-washed	Face-only color and film warranty	Is the reverse side or underside covered at all?
Concealed liner or internal panel	Film adhesion and corrosion, not UV color	Is a UV-resistant topcoat necessary, or would a standard system suffice?
Long-life or low-maintenance asset	Longer term with stepped coverage	What is the pro-rata schedule, and who pays labour?
Profiled or deeply formed panels	Formability and adhesion after forming	What minimum bend radius and forming temperature are required?

Use this table as a scoping tool, then confirm every value against your contract, drawings and the supplier’s written warranty. Where a standard is referenced, confirm the required edition and the exact acceptance values in the contract — do not assume a default.

What Actually Drives Color Fade Performance

Warranty length is a commercial promise; performance is a physical outcome. The main variables are:

Substrate and metallic coating: steel grade, zinc or zinc-alloy coating mass and surface treatment.
Paint system: resin chemistry, primer, topcoat, and whether the system is designed for exterior UV exposure.
Dry film thickness: within the system supplier’s specified range — too thin reduces protection, and excessively thick films can affect formability.
Pigment selection: some pigment families are more resistant to UV and chalking than others; the same nominal color can behave differently across systems.
Environment: UV intensity, humidity, salt, pollutants and rainfall (which helps wash surfaces and reduce chalking build-up).
Forming and installation: bend radii, tooling condition, fastener choice, sealing and drainage detailing.
Maintenance: periodic cleaning removes deposits that retain moisture and accelerate degradation.

Because these factors interact, no supplier can honestly promise a fixed service life for a coating or a building. Any year figure in a warranty is a conditional commitment tied to defined exposure, installation and maintenance assumptions.

RFQ Checklist for PPGI Color and Film Warranties

Send these questions with your enquiry so the quotation and warranty can be compared on equal terms. Product data such as coating build-up and paint system details are typically summarised on the PPGI coil page, but your contract documents take precedence.

Substrate: steel grade, metallic coating type and coating mass (state the required value and test method).
Paint system: primer and topcoat chemistry, nominal dry film thickness for each side, and back coat specification.
Color: reference standard, color code, gloss level, and the unexposed reference sample to be retained.
Warranty term: years from what event — delivery, installation, or project completion?
Color change: maximum permitted ΔE or equivalent, the measurement method, and the inspection conditions.
Chalking: permitted rating and the scale used.
Film integrity: what defects are covered, and after what exposure period.
Coverage: face only, or face and reverse? Are cut edges, holes and fixings included?
Remedy: full replacement, material only, repair, or pro-rata credit — and who bears labour and access costs.
Exclusions: environment category, chemical exposure, forming limits, maintenance obligations.
Conditions precedent: storage, handling, installation standards, cleaning frequency, record keeping.
Claim procedure: notice period, evidence required (photographs, retained samples, test reports), inspection rights, and dispute route.
Documentation: mill test certificate, coating test report, batch identification and traceability.
Commercials: validity period of the quotation, Incoterm, quantity basis, and any price adjustment mechanism. Ask for a dated quote, since coating system, zinc mass, quantity and delivery terms are the main cost drivers and prices move with raw material and energy costs.

Common Mistakes Buyers Make

Comparing headline years only. A longer term with narrow coverage can be worth less than a shorter term with a defined color limit.
Ignoring the measurement method. A ΔE limit is meaningless without the instrument, illuminant, observer and inspection geometry.
Assuming cut edges are covered. They usually are not, yet they are the first place corrosion appears.
Not retaining a reference sample. Without an unexposed sample of the same batch, color claims are hard to assess.
Overlooking maintenance obligations. Many warranties require periodic cleaning; failing to do it can void cover.
Mixing suppliers across a project. If coil and profiling come from different parties, responsibility for defects can be disputed.
Accepting verbal assurances. Only the written warranty document, referenced in the contract, is enforceable.
Forgetting the reverse side. Underside corrosion is common where condensation or trapped moisture occurs, and is often excluded.

FAQs

What is a realistic warranty period for PPGI color fade?

There is no single industry-wide number. Warranty terms vary widely and depend on the paint system, substrate, environment and negotiated contract. What matters more than the length is the defined color-change limit, the measurement method, the remedy and the exclusions. Confirm all of these in writing rather than relying on a headline figure.

Does a color fade warranty cover rust?

Usually not in the same clause. Color and chalking warranties address the appearance of the paint film; corrosion warranties address the metallic coating and are typically shorter and more heavily conditioned. Cut edges, scratches and fixings are commonly excluded from both, so confirm how edge protection and detailing are handled.

Is fading covered if it happens slowly over many years?

Only if the change exceeds the threshold stated in the warranty within the covered period, measured by the agreed method. Gradual change within the permitted limit is generally treated as normal weathering, not a defect.

What voids a PPGI warranty most often?

Common causes include forming beyond the recommended bend radius, damage during handling or installation, contact with incompatible materials, inadequate drainage or sealing that traps moisture, exposure beyond the agreed environment category, and failure to perform required cleaning and maintenance.

Should the warranty be from the coil supplier or the panel manufacturer?

It depends on who takes responsibility for the finished system. A coil supplier can warrant the coated coil as supplied; a panel or system provider may warrant the installed assembly. Where both exist, make sure the responsibilities do not leave a gap, and that the warranty is assignable to the building owner if required.

How should I compare two warranty offers?

Put them side by side against the same criteria: term and start date, covered defects, color and chalking limits with test methods, face versus reverse coverage, treatment of cut edges, remedy and cost allocation, exclusions, maintenance obligations, and claim procedure. Then check that the quoted product specification actually supports the warranty being offered.

Getting a Quotation You Can Compare

To receive a meaningful offer, send your project conditions, required substrate and coating specification, color reference, quantity, delivery terms and the warranty criteria you intend to apply. Ask for the quotation to be dated and for the warranty terms to be attached, so the commercial offer and the technical commitment can be reviewed together. You can submit your requirements through the contact page and request a dated quotation with the relevant product and warranty documentation for your review.