The Kwila Hardwood Decking is a South-East Asian tropical hardwood used for extensively for decking in NZ.

  • Attractive gold to reddy-brown coloured timber which will age to driftwood grey if left to weather.
  • Kwila is hard-wearing, easy to work with and has good strength, durability and excellent stability.
  • New kwila decks are susceptible to a reddy-brown tannin bleed in the first few months of being laid.
Details
  • Category
    Timber Decking
  • Range
    Hardwood Decking
Key Features

Specifications

  • Sizes 90x19mm and 140x19mm
  • Solid Lengths: random 1800-5700mm
  • Finger Joint: 5700mm
  • Kwila will bleed tannins when first laid
  • Recommend stainless screw fixings
  • Factory coating service available
  • FSC certified is available
  • Naturally durable hardwood – chemical-free
  • #1 selling hardwood decking in NZ!!
  • Ensure adequate ventilation around boards
Installation

Ventilation- free-air circulation under the decking is very important to help minimise cupping and warping. Proper ventilation ensures the potential difference in moisture content levels between top face and the underside of boards is reduced and extends the life and performance of the deck.

The sub deck should have at least 300mm clearance from the ground. This, in conjunction with suitable board spacing, will allow for adequate ventilation. In wet areas or over water, additional clearance is recommended. Other steps that can be taken to minimise moisture differential are – a ground level vapour barrier*(with slit drainage) and pre-coating the underside of the deck boards. Failure to provide for suitable ventilation is a major cause of early decking failure.

*Note: Using polythene sheet can create water pooling having the opposite effect.

Spacing:

  • Joist spacing 400-450mm recommended for 19mm thick decking.
  • Joists should be clean and sound and the screws should penetrate at least 40mm into the joists to achieve good holding.
  • Pre-drilling and counter-sinking is essential to avoid any splitting or ‘tear-out’ where the screw penetrates the Kwila.
  • Kwila hardwood decking should be spaced with 4mm min. gaps between decking boards. This will allow for some expansion & contraction as the decking boards acclimatise as well as allowing for drainage of surface water and good air circulation.
  • Note: These are recommendations only. An allowance for regional climatic conditions should also be factored in. Ask us for advice regarding your specific requirements!

Coating:

To enhance stability, bleeding and Kwila’s natural beauty we recommend coating the decking boards either before or following installation.

Note: When coating decking timber, ensure that the boards are free from surface marks and stains before coating. End sealing will help minimise splitting and surface checking on the ends of the boards.

Fixings:

We strongly recommend use of stainless steel screws for fixing your decking to the deck frame. We recommend 60mm long stainless-steel screws through the pre-drilled face of a 19mm thick decking board, two screws per joist.

Maintenance

Maintenance Cleaning & Washing

Hardwood decks should be cleaned with a stiff brush at least once a year to clear gaps between your decking boards and remove dirt and grim. A stiff brush can also remove any surface mould which can be a slip hazard in wet weather. Keeping the deck clear of leaf litter, moving pot plants and other large objects that may hold moisture to the top of the deck, is also important for the life of the deck. Hardwood Decking can be water blasted BUT it is important to do so at a low pressure so you do not damage the fibers of the timber.

Preparation for re-coating: Removing dirt and mould prior to coating is easy with OneStopDeckShop Deck Clean, a simple 4 step system that ensures your deck is ready for re-coating. OneStopDeckShop Deck Clean active restoration agent is the recommended product for general cleaning. Follow the manufacturer’s instructions when using.

Re-coating. Always follow the manufacturer’s specification for re-coating. We can assist you with choosing the correct coating product for your job as there is a range of different products that are suited to various deck types.

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About the
Seller

Timberline is a supplier of premium quality finishing timbers including cladding, interior wall and ceiling linings, mouldings, decking, feature beams and other speciality products. Timberline is focused on providing solutions to the commercial, hospitality and residential markets.

Timberline takes pride in being able to provide competitive tailored timber solutions direct to the architectural, interior design and construction industries. Equipped with vast long-standing industry knowledge and extensive product knowledge, Timberline is extremely versatile and can provide solutions to a wide variety of project requirements. The Timberline promise is "Solve, Create, Deliver".

Timberline can supply an extensive range of species of timber in a vast range of different profiles to complete any project requirements. In addition, Timberline works closely with all specifiers to supply bespoke designs if required, to make the vision a reality.

Proudly New Zealand owned, Timberline is a branch of the Buildpro Group of companies. Buildpro Group was established in 2004 and is also widely recognized for the One Stop Deck Shop. Buildpro Group's head office is located in Christchurch, and they have a national sales team throughout the country to provide quality service nationwide.

Timberline has a strong interest in caring for the environment and is committed to the conservation of the world's largest natural renewable resource. Buildpro holds FSC Chain of custody certification. FSC is an independent third-party audited certification that provides assurance to those specifying that all timber and forest products labelled FSC, originate from legal sources which are managed to ethical, environmental, social and economic standards.

Please do not hesitate to contact Timberline for more information.