Maintaining Thermowood Cladding & Decking for Long-Term Performance in India

Thermowood cladding and decking are premium exterior wood solutions, widely appreciated for their durability, natural beauty, and resistance to moisture. However, even though thermowood is thermally modified and chemically free, proper maintenance is essential to ensure long-term performance, aesthetic appeal, and lifespan, especially in Indian climates, which vary from humid coastal regions to extreme heat in interior zones.

Luxewood India supplies premium thermowood products and provides expert guidance to help architects, builders, and homeowners maintain their wood surfaces for years.

Why Maintenance Matters for Thermowood

Although thermowood is more durable than untreated wood, it still interacts with the environment. Without proper care, even thermally modified wood can experience:

Surface dirt accumulation
Minor cracking or discoloration
Accelerated greying due to UV exposure

Regular maintenance preserves both performance and appearance, ensuring your cladding and decking remain functional and visually appealing for decades.

Routine Cleaning & Inspection

A simple cleaning routine is the first step in maintaining thermowood:

Tools: Use a soft brush or broom and mild soap with water. Avoid harsh detergents.
Frequency: At least twice a year, ideally during post-monsoon and pre-summer seasons in India.
Inspection: Check for any warping, cracks, or discoloration. Address minor issues promptly to prevent long-term damage.

Avoid pressure washing, as high water pressure can damage the wood surface and reduce its lifespan.

UV Exposure & Natural Ageing

Thermowood naturally develops a silver-grey patina over time due to sunlight exposure. This is normal and does not indicate damage.

UV-protected oils can retain the original color for longer if desired.
In India, areas with high sunlight exposure, like Rajasthan, Gujarat, and coastal cities, may see faster greying. Applying protective oils annually can maintain a richer wood tone.

Surface Protection & Re-Oiling

Re-oiling thermowood is essential for preserving its aesthetic appeal and water resistance:

Use UV-resistant pigmented oils, preferably from trusted suppliers.
Frequency: Every 12–24 months, depending on exposure and climate.
Apply with a soft brush or roller and allow proper drying.

Sanding & Minor Repairs

For surface scratches or slight discoloration, light sanding can restore the wood’s original appearance.

Tips:

Sand along the grain to avoid marks
Reapply protective oil after sanding
Avoid aggressive sanding that may thin the wood layer

This process is particularly useful for decking areas that experience high foot traffic or cladding surfaces exposed to mechanical wear.

Seasonal Tips for the Indian Climate

Thermowood maintenance in India should consider monsoon, humidity, and extreme heat:

Pre-Monsoon: Check for cracks, clean debris, and apply protective oil to prevent water absorption.
Post-Monsoon: Inspect for fungal growth, clean accumulated dirt, and ensure proper drainage around decking.
Summer: Apply UV-protective oils to reduce discoloration and surface drying.

Following a seasonal maintenance schedule helps maintain both durability and aesthetics.

Common Mistakes to Avoid

Using pressure washers
Applying non-recommended oils or chemicals
Ignoring routine cleaning and inspection
Installing thermowood without proper ventilation (for cladding)

Avoiding these mistakes ensures your thermowood surfaces perform optimally for years.

FAQs

How often should thermowood be maintained?

At least twice a year for cleaning and inspection. Re-oiling every 12–24 months depending on exposure.

Can thermowood decking be left untreated?

Yes, but untreated thermowood will naturally grey and may require more frequent maintenance in harsh climates.

Conclusion

Proper maintenance of thermowood cladding and decking significantly extends its lifespan, durability, and visual appeal. By following routine cleaning, UV protection, seasonal inspection, and occasional re-oiling, your thermowood surfaces can last 20–30 years while retaining their natural beauty.

Luxewood India is your trusted partner for thermowood products, maintenance guidance, and technical support across India. Ensure your cladding and decking remain beautiful, durable, and long-lasting with expert care.