The Grad® x Millworks clip system: The future of secret-fixed timber cladding

Grad®: A trusted partner with a history of innovation

Across Europe, the Grad Clip System is rapidly becoming the preferred choice for architects and builders looking to combine aesthetics and performance. For over 20 years, Grad has been at the forefront of timber engineering, renowned for their innovative approach to secret fixing systems. This partnership sets a new standard in the UK market, combining Grad’s cutting-edge technology with Millworks’ high-quality timber for a reliable system backed by a dedication to precision and durability.

Why choose the Grad x Millworks clip system?

Both traditional fixing methods and secret-fixing systems have their place in timber cladding. Traditional fixing methods remain an effective and reliable choice, especially for certain timber species, profiles or project requirements. However, for those looking for an advanced, secret fixing method the Grad Clip System is an exciting addition to our range of solutions with several key benefits:

Uninterrupted finish

The Grad Clip System eliminates visible fixings, maintaining clean lines and an uninterrupted natural timber grain. Millworks Accoya Color Grey, Douglas Fir, ThermoWood® Ash, ThermoWood® Pine and Western Red Cedar are all compatible with the system and have been carefully selected for their durability and visual appeal. When installed with the secret clip system, these timbers offer a seamless solution designed to withstand the elements and preserve the natural beauty of the wood.

Precision alignment

The spacing between clips has been carefully engineered for Millworks timber species and profiles, ensuring boards are installed with the recommended movement gap every time. The timber can naturally expand and contract, reducing stress points and preventing warping or splitting, keeping both cladding and the system structurally sound over time.

Faster installation – 50% quicker

Traditional fixing methods require time-consuming steps and precise screw placement. The Grad Clip System is supplied with pre-installed clips for a quick, snap-on process. This reduces installation time by up to 50%, lowering labour costs and speeding up project completion.

Long lasting timber

Timber boards are fixed from the back with a machined groove, preventing water ingress and maintaining the integrity of the board face. Without the risk of screw-related damage, the lifespan of factory coatings is extended, and costly maintenance and repairs are significantly reduced. The rail system allows for ventilation behind the boards, reducing the risk of moisture build up and enhancing the durability of the system.

Sustainable and eco-friendly

Sustainability is at the heart of Millworks’ philosophy; the Grad Clip System supports this by promoting the use of recycled materials and sustainable construction practices. The system reduces the need for frequent repairs, contributing to longer-lasting timber, with the added benefit of easy board replacement.

Secret fixing vs Face fixing

While traditional face-fixing remains a tried-and-tested method, for projects with open rain screen cladding, the Grad Clip System is an ideal alternative. Secret fix systems can enhance the longevity of timber cladding by reducing exposure to environmental stressors. This is primarily due to the elimination of perforations in the timber surface, which helps prevent moisture ingress – a key contributor to timber degradation. Back fixing eliminates perforations that allow moisture to seep into the timber, thus prolonging the lifespan of your cladding.

Both methods have their place depending on the specific needs of your design. Here’s a quick comparison to help you decide which method works best for your project: