The Thermory Troubleshooting Guide (PDF) helps identify and understand the most common issues that may appear in Thermory decking, cladding, and porch flooring installations. Because Thermory products are real wood, natural reactions can occur over time. This guide explains what’s normal, what’s preventable, and how to correct issues when they do arise.
The document begins by explaining how humidity imbalance is the number-one cause of cupping or crowning. When the underside of a deck or the backside of a cladding board holds more moisture than the exposed face, boards will naturally swell or contract unevenly. The guide also highlights how film-forming finishes can trap moisture and increase the likelihood of cracking or reverse movement.
Color change is also addressed, noting that every exterior wood product will fade or weather when exposed to UV, moisture, and oxygen. Decking begins to lighten first, followed by cladding and soffits. The guide explains that color can be fully renewed and that maintenance frequency depends on exposure and surrounding conditions.
Several pages detail other common concerns, including black staining around screw holes caused by non-stainless fasteners, cladding that buckles due to poor ventilation behind the wall, and tannin bleed on light-colored surfaces as rain pulls organic pigments from the wood fiber. Each issue comes with guidance on why it occurs and what steps help correct or prevent future problems.
The guide also covers mold and dark surface staining. These are typically environmental issues related to shade, debris buildup, or local humidity rather than product failure. Light cleaning and routine maintenance can usually correct surface discoloration.
A final section explains the natural behavior of Drift products, whose light surface coating is designed to weather and reveal a reclaimed appearance over time.
Download the full Thermory Troubleshooting Guide (PDF) for detailed explanations of each issue and practical steps to resolve them. If you need help diagnosing a decking or cladding concern, your TimberTown team is always here to help.
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