... Merbau ranges from orange brown to dark reddish brown with a high tannin content susceptible to leaching if left uncoated. Spotted Gum is sustainably sourced from plantations throughout Australia and is a very popular hardwood, which is durable, dense and has minimal tannin leach. We conducted a small experiment with Spotted Gum and our Vulcan. I love spotted gum and use it for 90 per cent of my projects. Spotted gum is grown throughout the eastern part of Australia and in some parts of WA and SA in both native forests and plantations. Spotted gum is one of Australia's premier hardwood choices for outdoor decking projects for a number of reasons. Commonly used in exterior applications for outdoor furniture and decking. Composite Cladding, Aluminium Cladding vs Timber Cladding – What is the Best Option? A body with low ammonia in the urine would prompt the eggs to eva… Spotted Gum is an extremely adaptable and naturally strong timber which makes it ideally suited to numerous applications. Sizes of Decking Decking is commonly available as 65 x 19mm, 86 x 19mm and 135 x 19mm. Question: Hi, I am looking to replace a Harbour front timber deck around a pool. We recommend asking us about our additional staining service so we can supply the panels sealed to avoid any resin leaching out. What Are Concealed Fix Vertical Shiplap Weatherboards? Spotted gum is grown throughout the eastern part of Australia and in some parts of WA and SA in both native forests and plantations. The most common solution is to use a ‘tannin remover’. This becomes a problem when the timber is exposed to moisture. It can easily be painted or stained to further enhance the look of the timber. It matches the stain I use fairly close in colour. Care. Spotted Gum is a fairly hard timber, so anything between 40-120 grit will work. Spotted gum: Durability is class 1. Top to bottom: Day 1 to Day 10 results. Sat: 9.00am - 4.00pm. As far as cupping goes in wider boards, stay away from the 19mm thick stuff and use 25mm or 32mm boards. ... our Spotted Gum will gradually transform in the outdoors. Spotted gum is dense and durable, has minimal tannin leach, and has a lifespan of over 40 years. Spotted gum is less durable in the ground than ironbark or tallowwood (Class 2 v. Class 1). The colour variations are also available from deep red to light golden brown- an aspect that can give versatility to your decor and itsts4 gum-veins add peculiarity to its appearance. No Video Content. The most effective solution for leaching, is to use a thermally modified timber such as our Vulcan timber. For samples or more information, please get in touch. A Degree of Fire-Resistance. The Decking Debate: Grip Tread – Up or Down? Staining over the Merbau will also help protect the timber and enhance the durability of the product. The timber cell structure can be likened to millions of plastic straws bundled tightly together - so if a lot of water travels down the board it ‘flushes’ out the tannins in the wood causing the surrounding surfaces to become stained. Bamboo – Really the Sustainable Timber Choice? Siberian Larch Cladding and Weatherboards in the New Zealand Context, Alternatives to Paint Finish Cedar Weatherboards, Creating Old School Dark Finishes for Natural Eco-timber, Timber Weatherboards - Dark Colours Can Be Done, Timber Batten Screening - For Shade and Privacy, Designing for Timber Cladding in Bushfire Attack Level (BAL) Zones - Australia, Low Maintenance Alternative to Kwila Decking Oil and Stain, Reinvention of Ancient Wood Protection Technology. As per SDC, when selecting timber for external applications, it is particularly important to consider leaching. Hard wearing and low maintenance, it can withstand our harsh and ever changing Australian climate. Staining over the Merbau will also help protect the timber and enhance the durability of the product. We supply New Zealand vineyards (such as Pernod Ricard Winemakers – Church Road) with NON-TREATED Class 1 (25 year in-ground durability – 40 years plus out of ground durability) hardwood timbers. These leeches enter through a physical wound and lay eggs in the bladder. Spotted Gum (preservative-treatment) Tallowwood. The spotted gum does still bleed a little bit, though nowhere near as much as merbau. If the timber is painted with enamel paint, or with a stain-blocking primer followed by water-based paint, leaching is most unlikely. Find out more about Porta Cumaru hardwood here. It comes in grey to red. Oil - Litres (second coat to front face installed): Oil - Litres (one coat all sides + two coats face): Note: The figures given here include 10% wastage and are approximate only. Spotted Gum is extremely popular for flooring, decking and cladding. We recommend gently sanding the surface and applying a UV-stable exterior grade oil such as decking oil every six months. Thermally Modified Ash - A Dying Resource? My preference is for spotted gum which is what I have throughout my decks. Leaching, sometimes known as tannin bleed, is when your timber cladding or timber decking bleeds or leaks onto the surrounding surfaces. 2.Spotted Gum Decking The biggest advantage of Spotted Gum Decking is that it can tolerate harsh weather climates, which makes it ideal for outdoor use. Specifications . Other durable hardwoods you could consider include spotted gum, tallowwood and ironbark. Weatherboard Options for Re-cladding Your Home, Feature Balustrades - An Architectural Trend, Natural Wood Cladding Textures and Finishes, Feature Walls – Bringing the Warmth of Timber Indoors, Bamboo Exterior Decking Versus Wood Decking. This is in part due to the tannins from the surrounding trees. Reply. ... Merbau ranges from orange brown to dark reddish brown with a high tannin content susceptible to leaching if left uncoated. Kwila-look finish. It matches the stain I use fairly close in colour. Weathering relies on timber naturally getting wet and dry several times to leach the tannin & oils, generally this takes between 4- 6 weeks but depends on weather exposure and your type of timber. Merbau vs blackbutt decking Merbau is a cheap and attractive timber, but is unsustainably sourced and prone to tannin leach. Leaching can stain light-coloured surfaces such as concrete, pavers and natural stone walls, or around wet areas, such as pools. However, spotted gum is … Spotted Gum is a beautiful Queensland specie timber, botanically named Corymbia Citriodora, and is a unique blend of brown and grey colours. Blackbutt has natural features like Gum Veins and pin holes so when choosing Blackbutt you need to expect some visible natural features. We specialise in timber decking in Melbourne, Sydney, Brisbane, Adelaide, Perth and most parts of Australia. The tone of the timber will alter over time with exposure to UV light and timber leaching may occur. Leaching of heavy metals into the soil after 6 yr is minimal for arsenic and much below Brazilian environmental law limits for chromium and copper. Tannins are natural extractives present in certain timbers, and this leaching can cause unsightly stains on surrounding materials, most notably light coloured ones. Modern Versions of Shiplap Timber Cladding, Achieving Consistent Colour Tones in Exterior Cladding, 10 reasons to choose Abodo's Vulcan Decking, 10 reasons to choose Abodo's Vulcan Cladding, De-risking Timber Cladding - A Tested Timber Cladding System vs Sum of Parts, Four Reasons to Use Feature Timber Ceilings, Making an Impact on Timber Windows and Doors. This means tannin staining and bleed-through is less of a problem. Spotted Gum. It is made from both spotted gum and ironbark. Merbau vs blackbutt decking Merbau is a cheap and attractive timber, but is unsustainably sourced and prone to tannin leach. I am seeking advice as to which oil, tung, linseed, etc., is the best finish. Even light-coloured timbers leach. Thank you! It has smooth, mottled bark, lance-shaped to curved adult leaves, flower buds usually in groups of three, white flowers and urn-shaped or barrel-shaped fruit. Spotted Gum. Visit your local store for the widest range of building & hardware products. Spotted Gum Species Data Sheet Common Name/s Spotted Gum, Lemon-scented Gum ... Leaching of Tannins Staining is likely on adjacent surfaces after exposure to the elements. Thickness (finished dressed) Given some of the sawmilling supply constraints Timbeck has to deal with the chosen finished Weight: 1000 kg: Dimensions: 4.2 x 1.9 mm: Similar Products. Spotted Gum is classed as a dense ground-contact hardwood that will stand up to the elements. Of these the most stable dimension is 65mm ... All timbers leach tannins during rain. Merbau is known to leech tannin for quite some time – messy and delays the process of sealing it Personally I would struggle to take the advice of anyone who buys their timber from Bunnings. I like the natural variation of spotted gum and have heard that it is more durable too. We are building a new deck in our backyard (in Canberra) and have gotten quotes for two timbers – merbau and spotted gum. Spotted gum One of the most commonly used Australian hardwoods, spotted gum, is loved by designers and architects the world over for its beautiful grain structure and attractive markings. What can you do to minimise this? 130x25 Spotted Gum Decking It has a range of coloring, but tends to darken to a dark red as the wood oxidizes. Spotted gum is known as a relatively tough and durable choice, with a Janka Hardness rating of 11. It’s also resistant to tannin leach. Answer: Leaching of tannin commonly occurs if merbau is exposed to rain without a coating, or with a coating that allows moisture to penetrate. Timber Posts. Current dimensions are approx. Spotted Gum is well known for its overall reliability. After 12 months it looked awful and after 18 months I gave up on the test as a joke and threw it out. Architects and designers throughout the world value Spotted Gum timber for its back-sawn grain structure, attractive markings and vibrant colour palette. spotted gum The attractive and durable hardwood is an ideal timber decking. ... Leaching of CCA from treated fencepost was evaluated by atomic absorption spectroscopy. Final order quantities are the buyer’s responsibility and should be checked and verified prior to order placement. good luck jimj Author links open overlay panel Washington Luiz Esteves Magalhães a b Bruno Dufau Mattos c André Luiz Missio d. Show more. Spotted Gum (preservative-treatment) Tallowwood. It is a long-lasting Australian hardwood that is a little darker than blackbutt and often has some intriguing colour variations. Biodegraded untreated spotted-gum wood shows a decrease of more than 25% in polysaccharide content, with subsequent increases of extractives and Klason lignin, a typical brown-rot fungi attack. Leaching commonly occurs when certain timbers, for example Kwila (Merbau), Spotted Gum, Blackbutt, Balau and Tallowood are exposed to rain without a sealant or coating. The Future of Wood - The Story of Abodo Eco Timber. The tannin leaching can continue for months, particularly with timbers that have a high tannin content such as Kwila or Merbau. I have the underside of the decking boards ,joists and bearers painted in a Bristol russett Brown colour. At Sculptform, we help busy architects realise their creative vision by offering versatile feature wall, ceiling and facade systems and expert advice. Leaching occurs when tannins (also known as polyphenols) from within the timber leach out of newly installed timber and have the potential to stain or discolour surrounding areas. Porta Cumaru decking can be supplied with a factory applied pre-oiling and end-grain sealing treatment to ensure optimal colour fastness as your timber arrives ready to be installed. Timber posts should be placed on stirrups rather than in the ground where possible. Low Tannin Content. The tannin leaching can continue for months, particularly with timbers that have a high tannin content such as Kwila or Merbau. Timber Posts. Commonly used in exterior applications for outdoor furniture and decking. Porta Cumaru has near zero leaching properties making it the ideal choice for a range of external decking and cladding applications even next to pools and spas. Sizes of Decking Decking is commonly available as 65 x 19mm, 86 x 19mm and 135 x 19mm. It has natural oils and a lower tannin content, so it accepts oil and stain well and doesn’t experience bleed-through. This can cause brown, black or rusty looking ‘bleed’ marks on nearby surfaces. The timbers were exposed to the external elements for ten days. spotted gum The attractive and durable hardwood is an ideal timber decking. An Interview with a Green Architectural Designer: Craig Jarvis, Good Wood – The Importance of Good Forest Management. Timber posts should be placed on stirrups rather than in the ground where possible. Leaching commonly occurs when certain timbers, for example Kwila (Merbau), Spotted Gum, Blackbutt, Balau and Tallowood are exposed to rain without a sealant or coating. When you spend $60+ per square metre on timber decking, it pays to maintain its condition.You have to consider a number of options: oiling, painting, or staining, but there are a number of reasons why oiling is the best way to go. Porta are still operating, however as part of our CovidSafe plan we have a variety of safety measures in place. This means tannin bleed is highly unlikely, allowing home owners to rest easy. Find Hardwood Decking Spotted Gum STD BTR 135x32mm LM at Bunnings Warehouse. Forest Reds and Jarrah…Red tones. Vulcan timber has been thermally modified, with almost all of the tannin being removed during this process. Spotted gum Spotted gum is very similar to blackbutt, with the same durability and fire-resistance properties. Tip.1 Before oiling your Spotted gum deck with protective coatings for the first time its generally a good idea to allow the timber to release its natural tannin. Have you ever noticed how discoloured river water is? DeckWise® – Hidden Deck Fasteners & Accessories, Porta Cumaru – Hardwood Decking and Landscaping. Field testing of CCA-treated Brazilian spotted gum. Dimensions Returns & refunds We will gladly assist with returns and exchanges of this product in accordance with our returns and exchanges policy. Leaching or tannin bleed, is when timber cladding or decking bleeds onto the surrounding surfaces. Timber Weatherboards and Dark Coloured Paint, Locally Grown Alternative to Lawsons Cypress and Lusitanica, Finish Quality: Timber Weatherboards vs Fibre Cement Weatherboards, Reducing Carbon Footprint – A Case Study: Cardrona Cabin, Five Rules for Choosing Truly Sustainable Timber, Renewable Energy in the Production of Wood Products, Biomass Growth and Carbon Sequestration - A Comparison of Tree Species. How Long Does Charred Wood (Shou Sugi Ban) Last? It can be painted, stained or polished. Eucalypt timbers such as Spotted Gum and Blackbutt to name a few, have a high tannin content. I like the natural variation of spotted gum and have heard that it is more durable too. Spotted Gum is extremely popular for flooring, decking and cladding. Spotted Gum Dressed all round Spotted Gum Decking. ... our Spotted Gum will gradually transform in the outdoors. Spotted gum is currently QLD’s largest harvested native hardwood by volume, meaning that spotted gum is widely available throughout Australia, with quantities also being exported internationally. Another option is ironbark decking. It accepts oil and stain well, and has a lower tannin content that most other eucalyptus species. good luck jimj However, more often this only reduces the ‘natural extractives’ in the timber rather than eliminating them completely. These timbers are milled from heartwood (not sapwood) and are a mix of Tallowwood, Spotted Gum and Iron Bark. The timber of some decking woods, like Kwila, will leach a dark coloured stain when wet. Natural Weathering of Timber - Surface Checking, How Often Do I Need To Stain Timber Cladding, The Importance of End Sealing Decking and Cladding in Exterior Applications, Comparing Composite Decking With Real Wood, Fastener Oxidation – An Unsightly Stain on Timber Cladding, Exterior Timber Stains and Discolouration, Exterior Wood Coatings – What to Use? In areas known for bush fires, spotted gum that’s at least 18 mm thick doesn’t require fire retardant treatment. How Sustainable are Australian Hardwoods? Delivery is available, please call us on 1300 650 787. Returns policy. 1. Keeping your deck clean and pristine will not only make it more appealing, cleaning the wood will help it last longer and protect it from harmful substances. Our house is red brick so it would look nicer against it too. Timber is a beautiful and renewable resource, being grown – not man-made. Spotted Gum leaches less tannin. This means that tannin rich timbers typically need a thorough cleaning prior to coating. The density of spotted gum also means it does not absorb significant amounts of moisture from short-term wetting, but only when exposed to moisture for prolonged periods. Spotted Gum, despite its strength and density is a great timber to work with as it has few imperfections and a good level of natural oils which allow easy machining. It comes in yellow to red colour shades with moderate fire-resistant and conventional tannin leach. Thickness (finished dressed) Given some of the sawmilling supply constraints Timbeck has to deal with the chosen finished Eucalypt timbers such as Spotted Gum and Blackbutt to name a few, have a high tannin content. Spotted Gum is definitely very hard-wearing, and it is heavy enough to sink in water. There is not another timber in the world like Spotted Gum. A timber deck is a significant financial investment. The 135mm spotted decking can be prone to cupping in some instances (ie drop or in middle) according to some, I have never seen it though. It may be possible to reduce tannin leaching by washing the timber with deck washes and timber cleaners, although in most cases this reduces, rather than eliminates the tannin bleed. 90x19 Spotted Gum decking. It is in the highest category of durability class – Class 1. The results demonstrated that Merbau had excessive Shop now. Some species - like Merbau - have very dark tannin runs. Plus, it’s naturally resistant to fire, making it the perfect decking option for people who live in fire-prone, bush or tree-dense areas. Merbau and Red Iron Bark…red to brown tone so Autumn Tone, New Bronzetone, Burnt Red and Chestnut will all look very similar on smooth wood. Leaching of heavy metals into the soil after 6 yr is minimal for arsenic and much below Brazilian environmental law limits for chromium and copper. 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