Customer support
Product warranty.
Understand your coverage.
Know what to do if something goes wrong.
Limited warranty
- Issued by
- Wuhu Sungem New Material
Technology Co., Ltd. - Document
- HS-QM-20260101
- Updated
Find your warranty period
Table IThe warranty starts on the date of original purchase. The term depends on the product type and whether it is used in a residential or commercial application.
| Product type | ResidentialYears | CommercialYears |
|---|---|---|
| Solid co-extrusion WPC decking | 25 | 15 |
| Round hollow co-extrusion WPC decking | 20 | 12 |
| Square hollow co-extrusion WPC decking | 15 | 10 |
| Co-extrusion WPC fluted cladding and siding | 15 | 10 |
| Co-extrusion WPC fencing | 15 | 10 |
| Co-extrusion louver | 10 | 8 |
| 1st-generation solid WPC decking | 15 | 10 |
| 1st-generation hollow WPC decking | 10 | 8 |
| 1st-generation fencing | 8 | 6 |
| WPC pergola | 8 | 4 |
| WPC railing | 6 | 3 |
Residential use
Installation on an individual residence.
Commercial use
Installations other than an individual residence, including income-producing, public or semi-public premises such as apartments, schools, restaurants and hotels.
Match your product to the construction listed above. Contact Sungem if you need help confirming the applicable product type or use.
What is covered
The limited warranty covers the original purchaser of the listed products bought from Sungem or an authorised Sungem distributor, agent, dealer or importer, subject to the transfer provisions below.
Products must be stored, handled, installed, used and maintained in accordance with Sungem’s written instructions, under normal use and service conditions.
Physical integrity
Products shall be free from material defects in workmanship and materials, and shall not split, splinter, rot or suffer structural damage from termites or fungal decay.
Stain resistance
Resistance to permanent staining from typical food and beverage spills, or naturally occurring mould and mildew, is subject to the cleaning conditions. Products are not stain-proof.
Clean within one week
Remove food or beverage spills, or mould and mildew, with soap and water within one week of exposure or first appearance. Follow Sungem’s Care & Cleaning Guide and clean periodically to remove dirt and pollen.
What is not covered
Coverage depends on proper installation and care. The following exclusions and limitations apply.
Installation, use & external damage
- Improper installation, including inadequate structural support, fastening, ventilation or gaps; failure to follow Sungem’s installation guidance.
- Use beyond normal service conditions, or applications not recommended by Sungem’s guidelines and local building codes.
- Movement, distortion, collapse or settlement of the ground or supporting structure.
- Natural disasters such as floods, hurricanes, earthquakes and lightning; environmental conditions such as air pollution, mould and mildew; staining from non-food or non-beverage substances; normal weathering.
- Improper handling, transport or storage; abuse, vandalism, intentional damage or inadequate maintenance by the purchaser, a transferee or third parties.
- Decay caused by fasteners, ordinary wear and tear, repair or alteration, impact from objects, and causes other than manufacturing defects attributable to Sungem.
The specific stain-resistance conditions above apply to claims concerning food, beverage, mould or mildew stains.
Heat, surface damage & colour changes
- Effects of direct or indirect exposure to extreme heat sources above 135°C / 275°F, including fading and surface damage.
- Surface damage or punctures void the warranty. Do not use metal shovels or sharp-edged tools to remove snow or ice.
- Applying paint, solvents or other coating materials voids the warranty.
- Colour variations or changes, including slight differences and uneven discolouration caused by rugs, mats or other objects preventing uniform exposure to sunlight and the elements.
Stains outside the coverage conditions
Stains are excluded when the required cleaning is not completed within one week. Excluded substances also include:
- Acidic or alkaline abrasive compounds, paints, stains, strong solvents and metallic rust.
- Abnormal deck-use items and non-food or non-beverage substances, including biocides, fungicides, plant food, bactericides, cement, concrete, mortar, stucco and coloured chalk.
Mould and mildew can grow on any outdoor surface. Stains from mould or mildew not properly cleaned within one week of first appearance are not covered.
Excluded costs & purchases
The warranty does not cover costs of removing defective products or installing replacement materials, including labour and freight.
Products donated, bought on clearance, at promotional prices or at auction are not covered.
Making a warranty claim
Notify Sungem in writing before the warranty period ends. Include the information below so our team can review the claim. Sungem may request additional information.
What to send
- Proof of purchase
- Installation date
- A description of the issue
- Photographs of the affected area
- For stain claims, reasonable evidence that the required cleaning steps were followed
Send your written claim
customerservice@sungemwpc.comAttn: David Zhang
Wuhu Sungem New Material Technology Co., Ltd.Room 1403, Weixing Financial Center,
Jinghu District, Wuhu City,
Anhui Province, P.R. China
Additional steps for stain claims
Clean within one week
Follow Sungem’s cleaning procedures within one week of the spill or the first appearance of mould or mildew.
Arrange professional cleaning
If the result remains reasonably unsatisfactory, have the affected area professionally cleaned at your expense.
Claim within 30 days of professional cleaning
If the area remains reasonably unsatisfactory, make the claim within 30 days after professional cleaning and before the warranty period ends.
How claims are resolved
Table IISungem reviews the information and determines whether the claim is valid. For an accepted claim, Sungem will, at its option, replace the defective products or refund the relevant portion of their purchase price. Recovery is prorated according to the replacement ratios below.
Replacement products will be as close as reasonably possible in colour, design and quality. An exact match is not guaranteed; replacement is limited to styles and colours available at that time.
These are the claim-year entries in the warranty schedule, measured from original purchase. For a claim between listed years, contact Sungem to confirm the applicable ratio.
Solid co-extrusion WPC decking
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 12 | 6 | 100% |
| 15 | 8 | 80% |
| 18 | 10 | 60% |
| 22 | 12 | 40% |
| 25 | 15 | 20% |
Round hollow co-extrusion WPC decking
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 12 | 4 | 100% |
| 14 | 6 | 80% |
| 16 | 8 | 60% |
| 18 | 10 | 40% |
| 20 | 12 | 20% |
Square hollow co-extrusion WPC decking
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 4 | 2 | 100% |
| 6 | 4 | 80% |
| 8 | 6 | 60% |
| 12 | 8 | 40% |
| 15 | 10 | 20% |
Co-extrusion WPC fluted cladding and siding
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 4 | 4 | 100% |
| 8 | 6 | 60% |
| 12 | 8 | 40% |
| 15 | 10 | 20% |
Co-extrusion WPC fencing
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 4 | 2 | 100% |
| 8 | 4 | 60% |
| 12 | 6 | 40% |
| 15 | 10 | 20% |
Co-extrusion louver
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 4 | 2 | 100% |
| 6 | 4 | 60% |
| 8 | 6 | 40% |
| 10 | 8 | 20% |
1st-generation solid WPC decking
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 6 | 2 | 100% |
| 8 | 4 | 70% |
| 12 | 6 | 50% |
| 15 | 10 | 20% |
1st-generation hollow WPC decking and cladding
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 4 | 2 | 100% |
| 6 | 4 | 70% |
| 8 | 6 | 50% |
| 10 | 8 | 20% |
The replacement schedule includes hollow decking and cladding; the warranty-period table lists hollow decking only. Confirm the applicable term for 1st-generation hollow cladding with Sungem before purchase.
1st-generation fencing
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 2 | 1 | 100% |
| 4 | 2 | 60% |
| 6 | 4 | 40% |
| 8 | 6 | 20% |
WPC pergola
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 2 | 1 | 100% |
| 4 | 2 | 60% |
| 6 | 3 | 40% |
| 8 | 4 | 20% |
WPC railing
| ResidentialYear of claim | CommercialYear of claim | ReplacementRatio |
|---|---|---|
| 2 | 1 | 100% |
| 4 | 2 | 60% |
| 6 | 3 | 40% |
Transfer & general conditions
Residential transfer
The warranty may be transferred once within five years of the original purchase to a subsequent buyer of the property where the product was originally installed.
Commercial transfer
The warranty is freely transferable to subsequent buyers of the property where the product was originally installed.
Application suitability & instructions
Information or suggestions about applications, specifications and compliance with codes or standards, including building and safety codes, are provided for convenient reference without a representation of accuracy or suitability. Purchasers must verify and test suitability for their specific application.
Installation and Care & Cleaning Guides are available from Sungem or an authorised distributor, agent, dealer or importer.
Limits of liability & other warranties
To the fullest extent permitted by law, Sungem excludes special, indirect, incidental, consequential, reliance, statutory, punitive and exemplary damages, including lost profit, use, time, revenue, business opportunities, goodwill or reputation, and inconvenience, in connection with the sale, delivery, installation, use or loss of use of the products, or the purchaser’s liability to third parties.
These exclusions apply whether a claim arises in contract, tort (including negligence and strict liability) or otherwise, even if the damage was foreseeable or Sungem was advised of its possibility. Liability for non-personal-injury claims relating to defective products does not exceed replacement of the products or refund of their purchase price as described in the warranty.
The limited warranty is the only warranty Sungem makes for these products. Sungem disclaims other express or implied warranties, including merchantability or fitness for a particular purpose. The purchaser assumes the risks resulting from use of the products, alone or in combination with other products or substances.
Changes to the warranty
The limited warranty can only be changed by a written instrument signed by Sungem and the purchaser. No person or entity is authorised to bind Sungem to statements about product quality or performance beyond this warranty.
This page summarises Sungem’s Limited Warranty, document HS-QM-20260101, updated 1 January 2026. The written warranty governs coverage and claims.
Need to confirm your coverage?
Contact our team with your product type and project details.
