Landscape & Urban Design Issue 52 2021 | Page 20

DECKING

CHOOSING PRODUCTS FOR YOUR DECKING PROJECT ?

The variety of decking materials available on the market is extensive : traditional and economical softwoods ; luxurious , knotfree hardwoods ; durable modified woods and the emerging varieties of ‘ composite ’ products – which use a mixture of wood fibre , virgin and / or waste plastic and other additives .
The Timber Decking & Cladding Association ( TDCA ) applauds innovation and sustainability but advises if you choose composite decking products , there are several points to consider . Individual recipes with varying percentages of key ingredients , result in differing performance – do your research . Be aware that most long service life warranties offered , are valid only if the product is installed and maintained to the manufacturers ’ exact instructions . Unlike natural timber , recycling at the end of life is currently very limited . All decking surfaces require maintenance and to be kept free of dirt and debris – regardless of the material .
The deck substructure – posts , beams , joists , blocking / noggins and bracing – is just as important as the surface of your deck as it forms the foundation to the whole project . Pressure treated softwood is the go-to material for deck substructure components , but to ensure it is fit for purpose it must be preservative pressure treated ; TDCA recommends a Use Class 4 level of protection irrespective of whether the material is in ground contact or not . Be sure to demand proof of this when buying – if the supplier doesn ’ t know about the Use Class system of treatment , then investigate further .
Contact the TDCA to source DeckMark accredited products , suppliers and installers – for an independent verification of quality .
www . tdca . org . uk | email : info @ tdca . org . uk

For independent guidance on your next project

DesignADeck DeckMark Accredited Installer
Ensure your timber decking or cladding is fit for purpose through design , specification , material choice and installation . Whatever the size of your project , TDCA can offer : - an accredited materials , supplier and installer database - impartial and expert help by phone or email - inspiration through galleries and case studies - inspection & expert witness services - free downloadable resources including The Timber Cladding Handbook and A Builder ’ s Guide to Timber Decking
email : info @ tdca . org . uk visit : www . tdca . org . uk
The Timber Decking and Cladding Association is an independent , not-for-profit technical and advisory body . It was established to promote the materials , design and installation practices required to create good quality decks , associated landscape structures and cladding on buildings .
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