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Cumaru Decking 21 x 145mm - available with FREE finish!

Availability: In stock

Price From: £11.29 (Exc vat:) £13.55 (Inc vat:)
(ex vat) (inc vat)
Price per linear metre £5.30 £6.36
Price per square metre £35.35 £42.42

Quick Overview

  • FREE Natural Deck Oil supplied with every Cumaru order over 20m2
  • Honey Brown tone supplied
  • Natural Deck Oil enhances Cumaru's natural grain patterns
  • Protects against weathering, UV and moisture damage
  • Rich colour palette from golden honey and reddish browns
  • Excellent strength and durability - comparable to Ipé
  • Safe, scratch resistant surface compared to other timber species
  • Suitable for commercial and residential properties
  • 21mm thick kiln dried boards offer greater stability compared to other Cumaru boards in the UK

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Price From: £11.29 (Exc vat:) £13.55 (Inc vat:)

Silva Timber are offering FREE Biowash Natural Deck Oil Honey Brown tone with every order of Cumaru over 20 square metres (while stocks last).

As a guide, to reach 20m2 of Cumaru, the following quantities could be ordered:

Board Length

Quantity Required

1.83m 73
2.13m 63
2.44m 55
2.74m 49
3.05m 44
3.35m 40
3.66m 38
3.95m 34
4.27m 32
4.58m 30
4.88m 28
5.10m 27

 

Alternatively customers can mix board lengths to meet the 20m2 requirement.

NATURAL DECK OIL™ is a waterborne blend of protective oils designed to penetrate deep into wood. Like the natural oils found in wood, it rejuvenates and safeguards wood colour and integrity.

NATURAL DECK OIL™ protects wood from the sun's harmful ultra violet radiation and causes water to bead and roll off of the surface.

As can be seen from the image above, NATURAL DECK OIL™ enhances the appearance of Cumaru, accentuating the grain patterns and providing an attractive Honey Brown colour tone. 

1 x 3.8 litre tin of NATURAL DECK OIL™ will be provided for every 20m2 of Cumaru decking ordered, or part thereof. Natural Deck Oil normally retails at £35.04 per tin (exc VAT).

Free finish promotion available while stocks last. 

 


 

Cumaru is a beautiful hardwood with a rich palette of golden tans to medium reddish brown colours and fine interlocking grain.  Compared to other wood species Cumaru ranks very highly in density, strength and hardness which combined with its stability and durability creates a resilient and reliable decking material. 

Cumaru is a lower cost alternative to Ipe as the two species are similar in their appearance and technical properties. 

 Appearance:  Cumaru is a particularly attractive wood species with colour tones ranging from golden honey to dark reddish brown and the predominant colour being a medium reddish brown.  The colour tones perfectly complement each other and overall create a warm rich appearance.  Cumaru has an irregular interlocking grain and a course texture.

Durability: Cumaru is rated in the most durable hardwood category of all species world-wide.  If properly installed and maintained, a deck built with Cumaru should have a minimum life expectancy of 25 years and could even exceed 50 years.

Density:  Cumaru has one of the highest density ratings of any wood species making it ideally suited to commercial decks, particularly in high traffic areas.  A rating of 1080kg / m3 demonstrates Cumaru’s density credentials above almost all other species.

Stability:  Cumaru has good stability characteristics once dry.  To ensure that shrinkage and checking are kept to an absolute minimum, Cumaru decking from Silva is kiln dried to a moisture content of 14 – 16%.

Strength:  Cumaru is one of the strongest wood species available with an MOR rating of 24,800.

Hardness:  With a rating of 3200lbs, Cumaru ranks very highly on the Janka Scale making it one of the most impact and scratch resistant species available.   

Grading:  First quality is the highest grade of Cumaru decking that is commercially available.  It is 100% heartwood and graded for one face to be relatively defect-free.  Occasional pin holes, small sound tight knots, light planer miss and other non-structural defects and characteristics are allowed on the reverse and sides of the board.

Characteristic Dry Board Unit
Bending Strength 27270 psi
Max Crushing Strength 13720 psi
Impact Strength 39 inches
Stiffness 3030 1000 psi
Hardness (Janka) 3450 lbs
Toughness 265 in-lbs
Specific Gravity 0.90  
Weight 71 lbs/ft3
Density 71 lbs/ft3
Radial Shrinkage 5 %
Tangential Shrinkage 8 %
Volumetric Shrinkage
12 %

Coverage

1m2 = 6.90 metres of board

Silva Timber Associates