SENYU WPC products are covered against insect attack, corrosion, cracking, splitting and distortion — with a 5-year colour guarantee from the date of purchase.
SENYU wood-plastic composite products are warranted against moth and insect attack, corrosion, cracking, splitting and distortion, as well as other manufacturing quality issues.
Slight colour fading during the first three months of exposure is normal natural weathering. After that initial period the colour remains stable — and we guarantee it for 5 years from the date of purchase.
Every warranted SENYU WPC product is covered against the following quality issues for the warranty period, provided the product has been installed and maintained as instructed.
No termite, borer or insect damage — the composite matrix contains no edible cellulose for pests.
Unaffected by moisture, salt air and pool chemicals — no rust, rot or decay over the warranty period.
Warranted against structural cracking that would impair the performance or safety of the board.
Free from splitting along the board length when fixed with the recommended clips or pre-drilled screws.
Warranted against twisting, bowing or cupping caused by a manufacturing defect in the board.
After the initial three-month weathering period, colour is guaranteed to remain stable for 5 years.
WPC is not painted — the colour runs through the material. It settles into its final tone during the first season, then holds.
Normal weathering. Boards may lighten slightly and unevenly as they are exposed to sun and rain.
The surface tone evens out across the deck and remains constant — this is the period covered by the colour warranty.
Subtle changes from long-term use and weathering are normal and not covered, but the material keeps performing.
Four straightforward steps. The more detail you send upfront, the faster we can assess and resolve the issue.
Message us through the contact form with your order number, product code and purchase date.
Include close-up and wide shots of the affected area, plus a short note on installation date and conditions.
Our technical team reviews the case against the warranty terms and confirms whether it is covered.
Where a genuine defect is confirmed, affected products are replaced free of charge or resolved as agreed.
This guarantee applies to product quality issues caused by normal usage only. The following are outside the scope of the warranty:
Most excluded claims come down to installation or maintenance. These two guides cover both.
Keel spacing ≤ 350 mm, 3–5 mm expansion gaps, pre-drilled 45° edge screws and drainage after the keel is fixed — the details that keep boards flat and claims unnecessary.
Read the installation instructions →Soapy water two to four times a year, clear drainage gaps, prompt stain removal and no harsh solvents — proper maintenance is a condition of the warranty.
Read the maintenance & care guide →The questions buyers and installers ask us most about coverage. For anything specific to your order, contact our after-sales team.
Send us your order number and photos of the affected area — our after-sales team will confirm coverage and next steps. Technical support is available 7×24h online.
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