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LIGNIA® Timber: All About This Sustainable, Modified Wood

LIGNIA® is a new wood on the block — but it’s already making a big impact with its environmental credentials, beauty, durability and suitability for a wide range of timber projects.

As a leading UK supplier of LIGNIA®, let’s explore this good-looking, versatile and ‘green’ new timber product in a little bit more detail.

What is LIGNIA® and how is it made?

LIGNIA® is a new type of modified, sustainable timber. It starts life as FSC®-certified Radiata Pine softwood, afterwards going on a journey of sustainable modification and treatment at LIGNIA®’s manufacturing plant in South Wales.

The pine is impregnated with resin, then kiln dried and cured under high temperature and pressure. The end result is a timber that is very easy on the eye, extremely durable, dimensionally stable and fit for multiple purposes.

LIGNIA® is seen as an alternative to slow-growing tropical hardwoods like teak and mahogany whose harvest sometimes leads to unsustainable forestry management.

What are the benefits of LIGNIA?

1. Sustainable

In modern design, sustainability is an increasingly important decision-making factor.

For architects, designers, builders or home improvers who want to create gorgeous spaces that have an environmentally-friendly theme and story behind them, LIGNIA® is ideal. All of the wood used to make LIGNIA® is sourced from FSC®-certified plantations.

When trees grow, they lock up and store carbon dioxide — a harmful greenhouse gas. Ensuring forests are managed sustainably is crucial.

The trees harvested to make LIGNIA® are fast growing and always replaced by young saplings, which in turn sequester more carbon over their lifetime of growth. The use of fast-growing trees ensures stocks are far easier and quicker to replenish, alleviating pressure on the environment.

2. High performance

As a self-proclaimed ‘wood that’s made for life’, LIGNIA® has impeccable outdoor durability and dimensional stability.

As well as being a very small movement timber, the innovative resin impregnation and heat treatment that this wood undergoes gives it incredible protection. LIGNIA® stands up well to UV, water, decay, insect and fungal damage, mimicking the performance of popular tropical hardwood species.

Indeed, when used for above-ground applications, LIGNIA® products also come with an impressive 50-year warranty against decay.

3. Easy on the eye

Then it comes to how the product looks.

Just as its durability mimics tropical hardwoods, the rich golden-brown hues of LIGNIA® resemble species like teak very closely, making it a distinguished, beautiful choice for any exterior project.

Be warned, however: like any timber, when left untreated and exposed to rain and UV, LIGNIA® will eventually weather to a silvery grey — so consider a cost of quality finish (like a semi-transparent, water-based stain).

Pine forest

What is LIGNIA® used for?

Despite being relatively new to the market, LIGNIA® has already demonstrated its versatility for a range of timber construction projects.

The durability afforded by this modified wood makes it particularly suitable for any outdoor project that needs to stand up to the elements — fencing, cladding and decking being some of the most popular.

As well as being non-corrosive to steel fixings, this modified timber is commonly used for yacht decks — which should tell you all you need to know about its durability and beauty!

LIGNIA® vs Accoya®: what’s the difference?

Like LIGNIA®, Accoya® is another popular brand of modified wood. Both start their lives as sustainably-harvested pine, but the way they are modified differs.

Accoya® is treated using a patented acetylation production process which provides the wood with improved durability against destructive elements like UV and water, as well as fungal attack.

LIGNIA®, as we discussed, undergoes a resin-impregnation and heat curing treatment, providing the wood with durability to destructive outdoor elements and excellent dimensional stability.

Both class themselves as ‘long-life’ woods. Unlike Accoya®, LIGNIA® is manufactured in the UK.

Just on the topic of modified wood, we also stock another type of popular sustainable, heat treated timber —ThermoWood. To modify it, heat and steam are applied which creates structural changes within the wood.

This drastically limits the timber’s ability to decay and lose or gain moisture, improving its stability — preventing splitting, cracking and warping.

LIGNIA wood - mimics the appearance of teak

How much does LIGNIA® cost?

Costs are dependent on the project you have in mind. As a rule, however, you’ll usually pay a marginally higher price for LIGNIA® timber compared to some other commercially popular timber species, like Western Red Cedar and Siberian Larch. It is less expensive than popular hardwood species like Iroko and teak.

Take fencing, for example. Our LIGNIA® starts at £3.10 + VAT per linear metre; by comparison our cedar fencing starts at £2.10 + VAT, with larch at £1.55 per linear metre.

Duffield Timber: your supplier of LIGNIA® cladding, fencing and decking

So, after all this, you might ask the question: where can I buy LIGNIA®? The answer — right here, from us!

Whatever project you have in mind — LIGNIA® slatted fencing, cladding or decking — at Duffield Timber, we’re leading supplier and stockist of LIGNIA® products.

Whether you’re a specifier, tradesperson, designer, architect or just doing a spot of home improvement, get in touch with our expert timber team to kick-start your project.

LIGNIA cladding near an entrance
LIGNIA deck chair

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