Porta Cumaru is a very dense, extremely hard-wearing Class 1 sustainable timber. It's durability makes it suited to a variety of external and internal applications across residential, commercial and structural/civil construction. Compared to some other hardwoods it has near-zero tannin bleed. Porta Cumaru is FSC® certified as being responsibly harvested and processed using regulated forest management and practices and certified by a third-party organisation. Click here to read more about Porta Cumaru hardwood range. Our range is expanding so please call us to discuss your requirement and specifications.
Porta Cumaru is an extremely strong timber - beams are strength graded to F34 and posts to F27. This stronger timber enables longer spans, reduces number of posts and saves you money for on-site labour. Porta Cumaru has a very high density of 1,085 kg/m3. It meets the requirement as a BAL 19 timber as specified in AS 3959-2009 for use in timber construction in bushfire zones. Porta Cumaru is a Class 1 timber with an above-ground life expectancy of greater than 40 yrs and in-ground of greater than 25 years. Also termite-resistant.
Porta Cumaru is an attractive timber, with a unique interlocking grain. Mid-brown in colour with a reddish or purple hue when cut changing to brown with red or gold flecks. It can age to a lustrous grey if left uncoated.
Pre-drilling for screwing or nailing when installing decking is recommended. Its inherent hardness has a blunting effect on tool cutting edges, therefore saws/chisels/drills etc. need to be sharpened more often. It can be sanded, oiled and painted very easily. Porta recommends using an oil-based paint/stain preparations due to its high timber density, as water-based products have minimal penetration for long-term coating durability. Compared to other hardwoods tested Porta Cumaru demonstrated near-zero tannin bleed. However Porta recommends cleaning of timber prior to installation and a suitable sealer to protect the timber and minimise any potential run off of natural resins onto surrounding surfaces.
Porta Cumaru is ideal for applications where a durable timber is needed such as decking, cladding, pergolas, boardwalks, street furniture and marina applications.
Source of Porta Cumaru
Porta Cumaru is sourced from sustainably managed forests in Peru. Our supplier is FSC® certified and harvests the timber in a manner that preserves the forests, wildlife and surrounding communities for future generations. Click HERE to learn more about their model for sustainable forest management. Porta holds Chain of Custody certification which means our suppliers for all our timbers are also FSC® certified.
What does FSC® certified timber mean for Porta Cumaru?
Porta Cumaru is FSC® certified as being responsibly harvested and processed using responsible forest management and practices and certified by a third-party organization. This assures that Porta Cumaru protects the forests biodiversity and ecological processes. Buying FSC® certified timber helps support sustainable forest management, which reduces the emission of greenhouse gases and protects wildlife habitats. Porta is committed to sourcing timber from sustainable and environmentally responsible resources. By focussing on certified timber, we are helping maintain the ecological, sociocultural and economic balance of forest environments by preserving the world’s forests for generations to come.
How does Porta Cumaru stand up to UV or sunshine exposure?
Porta Cumaru has been used in external exposed applications such as board walks and wharves, for many years. Our trials show Porta Cumaru withstands severe weather exposure and our experience is that it is highly durable. Read more about Porta Cumaru in the Atlantic City Boardwalk case study.
What does sustainable forest management mean?
Sustainable forest management is the process of harvesting trees in accordance with the highest standards of sustainable forestry as dictated by the relevant certification body, FSC®, or PEFC™. Using FSC® as an example, FSC® forest management certification confirms that the forest is being managed in a way that preserves the natural ecosystem and benefits the lives of local people and workers, all while ensuring it sustains economic viability. These are audited by an independent third party. Click here to view a short video on sustainable forest management relating to the tropical forests in Peru (called tropical given their longitudinal position).
Porta Cumaru Technical Information
Density kg/m3 dry (1) = 1085 Durability in ground (2) = Class 1 - 25yrs+ Resistance to Split (Nailing) = Good Specific Gravity (1) = 1.0 Durability above ground (2) = Class 1 - 40yrs+ Resistance to Split (Screwing = Good Hardness (Janka kN) (1) = 14.8 Susceptible to Lyctid Borer = No Gluing = Fair Modulus of Rupture MPa dry (1) = 175 Termite Resistance = Resistant Machining = Good Modulus of Elasticity GPa dry (1) = 22 BAL Rating (3) = 19 Finish = Good Radial Shrinkage % (1) = 5.3 Bending = Poor Stability = Excellent Tangential Shrinkage % (1) = 7.7 Sanding = Good Growing Region = South America Bleed* = Near-zero (1) Wood Solutions (2) Expected performance (3) Australian Forest Research Company 20161118 (May 2017) (4) AS 3959 Construction of buildings in bushfire-prone areas *Compared to other hardwoods tested Porta Cumaru demonstrated no apparent or near-zero tannin bleed. However, Porta recommends cleaning of timber prior to installation and using a suitable sealer to protect the timber and minimise any potential run-off of natural resins onto surrounding surfaces.
How to specify Porta Cumaru
Product: Timber will be Porta Cumaru (Dipteryx odorata). Technical Features: FSC® certified, near-zero tannin bleed, with a density of 1,085 Kg/m3, certified Class 1 durability to AS 5604 natural durability above ground and resistant to Australian termites, min. Janka hardness of 14.8kN, a seasoned structural rating of F34 (beams) and bearer and joist width must not be less than 45mm, MOE of 22GPa, MOR of 175MPa, or unseasoned rating of F27 (posts). Where unseasoned Porta Cumaru timber is used, appropriate construction procedures must be adopted to compensate for the shrinkage. Porta Cumaru timber supplied for structural purposes such as posts, bearers and/or joists shall comply to AS 2082 and deck boards timber shall comply with AS 2796. Porta Cumaru timber should be pre-finished in the factory and a quality coating applied on all sides. Cut edges should be end sealed. Certification: Porta will provide a compliance guarantee with all orders indicating the Porta Cumaru timber has FSC® certification.