In the world of timber decking and cladding, the quality of specification, materials, and installation can vary greatly and the consequences of getting it wrong can be serious. That’s where the Timber Decking & Cladding Association plays a pivotal role.
From costly remedial work to safety risks and reputational damage, there is no room for compromise when aiming for durable, long-lasting decking and cladding projects. Investing time at the outset to select the right materials and follow design and installation best practice can mean the difference between success and failure.
The Timber Decking & Cladding Association‘s (TDCA) DeckMark and CladMark third-party quality assurance schemes are built on established ISO quality standards. They are intended to help those engaged in the specification, design, installation or purchasing of timber decking and cladding ensure that the products they buy, or the TDCA registered installer they employ, will be of the highest quality. Developed to provide peace of mind, these schemes identify products and services that meet the standards set by the TDCA.
DeckMark applies to manufacturers, suppliers and installers of decking products, covering everything from substructure materials and fixings to finishes and complete systems.
CladMark extends the same principles to the cladding market, where assurance of durability, correct detailing, and appropriate fixings is equally essential. Only those who can demonstrate compliance with TDCA standards and undergo a robust yearly audit check are awarded the Mark, making it a trusted, independent, symbol of quality, reliability, and professionalism.
Why accreditation matters
With timber increasingly seen as a sustainable and versatile solution for modern construction, there’s growing pressure for the materials and structural specifications of decks and external timber cladding to be quality verified by a third-party to negate the risk of corners being cut.
TDCA accreditation schemes provide this verification by:
- Promoting correct design and installation techniques
- Ensuring the correct use of fixings and finishes
- Reducing the potential for premature product failure
- Assisting specifiers and end clients choose materials that are fit for purpose.
Put simply, TDCA schemes set a high standard for quality. The DeckMark and CladMark Product accreditation verifies the performance and longevity of materials through independent auditing, helping to elevate the reliability of a wide range of timber decking and cladding projects, from residential garden decks to large-scale commercial façades.
Going further with DeckMark Plus and CladMark Plus
DeckMark Plus and CladMark Plus accreditations go a step further. These complementary schemes apply to products that meet or exceed the requirements of a recognised national or international performance standard. They identify individual components or systems that have undergone additional technical or safety evaluations through recognised, quantitative procedures.
This provides users with robust, independently assessed evidence that a product will perform its design function – adding further confidence to professional decision-making.
If things go wrong: independent services
The TDCA’s quality setting role doesn’t stop at accreditation. TDCA is recognised as the timber industry’s technical authority on decking and cladding installations, as well as offering independent expert opinion inspections and an expert witness service.
TDCA expert opinion inspections are required for a variety of reasons: to assess the integrity of materials and construction techniques, compliance with good installation practice, to investigate a complaint, or simply provide peace of mind. These services are invaluable for:
- Resolving disputes
- Verifying contractor or material performance
- Supporting legal processes or insurance claims
- Safeguarding reputations.
Each inspection is carried out by highly experienced technical specialists with a deep understanding of timber behaviour and best practice. TDCA’s objective, independent and professional guidance helps bring clarity and resolution.
TDCA’s Expert Witness Service is an extension of the inspection service and provides a service for solicitors involved to use an expert who can provide independent, unbiased timber expertise to support legal claims in line with Civil Procedure Rules.
Backing timber best practice
By promoting schemes like DeckMark and CladMark, and providing independent technical oversight, the TDCA plays a vital role in upholding quality standards. For suppliers, manufacturers, and installers, gaining accreditation demonstrates a commitment to quality and helps them stand out in a competitive market. For specifiers and homeowners, it provides a trusted route to selecting the right products and a professional contractor.
