Question 1

Why do standard wood glues fail on WPC boards?

Accepted Answer

WPC surfaces are low-energy composites often carrying mould release agents. Standard PVA wood glues cannot wet these surfaces effectively or accommodate thermal movement. WPCFix and 1K PUR are formulated specifically to overcome these challenges.

Question 2

Should I use mechanical fasteners with WPCFix?

Accepted Answer

For structural connections and heavy doors, combine WPCFix or PUR adhesive bonding with mechanical fasteners at designated points. Adhesive distributes stress across the full joint area while fasteners handle concentrated loads and provide code-compliant security on entry doors.

Question 3

How long should PUR bonds cure before hanging WPC doors?

Accepted Answer

Allow 24–48 hours for full PUR cure depending on ambient humidity and temperature. Light handling may be possible earlier, but do not load hinges or latches until the adhesive reaches full strength to prevent hinge screw pull-out and frame distortion.

Question 4

Is Drill-Free suitable for exterior WPC cladding?

Accepted Answer

Drill-Free works for lightweight trim and decorative elements within its rated load capacity. Primary cladding panels subject to wind load should use WPCFix with appropriate mechanical anchoring. Consult Stick-Onn technical support for project-specific recommendations.

Question 5

What surface preparation is required before applying WPCFix?

Accepted Answer

Wipe surfaces with a dry cloth to remove dust and contamination. Lightly sand glossy areas if present. Apply adhesive as a bead or spread depending on joint geometry, then clamp or screw to maintain pressure during the 6–8 hour initial cure period.

WPC and PVC Installation Adhesives for Composite Fabrication

WPCFix: Purpose-Built for Composite Substrates

1K PUR for Structural WPC and Door Manufacturing

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