Techniques for the Care and Protection of Cumaru Wood Decks

Cumaru wood is one of the most robust and stable options for outdoor deck construction due to its high density, natural durability, and weather resistance. Its low moisture absorption, mechanical resistance, and aesthetic beauty make it a premium choice for architectural and landscaping projects. However, proper maintenance is key to maximizing its lifespan and preserving its structural properties.

At Pacific Forest, we specialize in exotic woods and understand that the best protection for this type of wood must be highly effective and specifically formulated for its characteristics.

Technical Characteristics of Cumaru Wood

– Extreme density and hardness: With a density ranging from 950 to 1,100 kg/m³, it is one of the most resistant woods on the market, granting it high resistance to wear and mechanical impacts.
– Relative dimensional stability: Although it has high density, its volumetric shrinkage percentage is 15%, higher than other exotic species, meaning it expands and contracts more based on humidity and temperature changes.
– Natural resistance to pests and fungi: It contains natural oils and extracts that protect it against termites, fungi, and microorganisms, prolonging its durability without the need for intensive chemical treatments.
– High natural oil content: Its composition reduces water absorption and improves its performance against moisture, preventing the appearance of mold and other degradation agents.
– Warm and sophisticated tones: Its color range varies from dark brown, reddish-brown, to golden hues, with pronounced grain patterns that give it a unique aesthetic appeal.

Important Considerations for Installation

Since Cumaru is a high-density wood with a natural adaptation behavior to humidity and temperature changes, it is essential to follow certain guidelines during installation to ensure maximum stability and durability. Following these recommendations will result in a strong, safe, and long-lasting deck:

– Proper board spacing: A minimum distance of 5-7 mm between boards is recommended to allow for natural expansion without the risk of warping.
– Space beneath the deck: Adequate ventilation is essential to prevent moisture buildup and condensation, which can cause wood instability.
– Efficient drainage: In rainy areas, optimal drainage is crucial to prevent water accumulation, which could increase board shrinkage and expansion.
– Proper fasteners: Stainless steel screws and hidden fastening systems are recommended to allow for minor movements without compromising structural stability.

Maintenance and Protection

At Pacific Forest, we recommend Osmo because it has all the specific qualities required for the care of this type of wood. Its formulation ensures durable and effective protection. Additionally, we follow a structured maintenance protocol to preserve Cumaru wood in optimal condition.

Cleaning and Surface Preparation

To ensure proper adhesion and penetration of protective products, it is essential to properly prepare the deck surface.

– Sweeping and debris removal: Use a soft-bristle broom or vacuum to remove dust, leaves, and dirt particles.
– Deep cleaning: Mix warm water with Osmo Decking Cleaner, a cleaner designed for high-density woods. Apply it with a stiff-bristle brush, following the grain direction to remove stains and dirt buildup.
– Complete drying: It is essential to let the wood dry for at least 24 hours before applying any finishing product.

Application of Osmo Oil-Based Stain

At Pacific Forest, we recommend this product because it provides a complete solution for protecting Cumaru wood. Its composition penetrates deeply into the wood, offering exceptional resistance to moisture, UV rays, and wear, without altering its natural appearance. Additionally, its microporous technology allows the wood to maintain flexibility and dimensional stability, preventing cracks and warping over time.

Advantages of Osmo Oil-Based Stain

– Long-lasting protection: Resists the effects of moisture, UV radiation, and extreme temperature changes.
– Microporous finish: Does not form a surface film, preventing the wood from cracking or warping.
– Resistance to fungi and mold: Contains protective agents such as propiconazole, which prevent the growth of fungi and algae.
– Easy maintenance: Does not require sanding before reapplication, simplifying periodic maintenance.

Inspection, Care, and Periodic Maintenance

– Inspection every 3 months: Check for cracks, worn-out areas, or loss of protection.
– Annual maintenance: Apply a new layer of Osmo Oil-Based Stain and reinforce with Osmo UV-Protection Oil Extra if necessary.
– Avoid aggressive chemicals: Do not use products containing chlorine, ammonia, or solvents that may deteriorate the wood.
– Prevent water accumulation: Maintain proper drainage to prevent puddles and moisture buildup.

📲 Contact us for more information and get your Cumaru deck with us.

🔗 You can also learn more about woods and their maintenance by visiting our Instagram, where we share specialized content. Find more details in our posthttps://www.instagram.com/pacificforest_cl/p/DGGJkisx8uV/?img_index=3

🌐 To purchase Osmo products in Chile, visit: https://nuprotec.cl/