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Welcome to the Timber Decking and Cladding Association (TDCA) – an independent and not for profit organisation. We're here to help you specify, design, install and care for timber decking and cladding.

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Find a TCDA approved supplier or installer | DeckMark and CladMark accreditation schemes give added reassurance on quality

Member Case Studies to inspire you | Download TDCA Publications for definitive technical guidance | Got an issue? Expert Witness Services

We offer a wealth of information, expert advice and technical information on all aspects on timber decking, whether you are an individual, property developer, architect, contractor, specifier or decking installation company.

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Increasingly popular with both domestic and commercial properties, timber cladding is lightweight, attractive and offers environmental benefits too. Expert information will aid design and specification.

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DeckMark and CladMark

The TDCA operates DeckMark and CladMark quality schemes which verify the performance and longevity of materials that have been accredited or the high standards of the installer that has been approved. 

These schemes require a full business audit and assessment to achieve accreditation which are maintained through ongoing audit checks. 

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Find an approved supplier

Choosing a TDCA accredited supplier for your timber decking or cladding ensures that you are using the best quality to deliver a long-lasting result. 

Learn more about our approved suppliers and installers - talk to some first rate businesses that can professionally help you with your project.

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Expert advice and guidance

Whatever the size of your timber decking or cladding project, the TDCA has ample expert information available. From design, specification and product selection to installation and maintenance, we are here to help you.

Got a question? Head over to FAQs

Decking tips with Roger Bisby

Got a couple of minutes? Watch this informative video on the essentials of deck building.  Produced by Wood Campus, our education partner.

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Become a Member

Enjoy the many benefits of becoming a TDCA approved supplier or installer. Talk to us about applying for DeckMark or CladMark accreditation.

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Inspection and Expert Witness Services

Call upon us for independent inspection, consultation and reporting where expert decking or cladding opinion is required. 

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