Secret fix timber cladding: inspiration for your next project

3 min read


Unlike traditional cladding systems with visible fixings, secret fixing conceals fasteners to create a seamless and refined exterior surface. This not only enhances visual appeal but also offers structural benefits by minimising moisture infiltration and optimising ventilation. In this blog, we will showcase some beautiful secret fix timber cladding projects our teams have worked on to give you inspiration for your next venture.

What is secret fixing?

When it comes to cladding installation, the choice of fixing you choose is extremely important. Common practice is to install timber cladding using ‘face fixed’ nails or screws – fixing the cladding to the batons behind, through the front face of the timber cladding. However, for those who seek a seamless appearance with no visible screws, secret fixing is the way to go.

Russwood offers two methods of secret fix. The first is a FassadenClip®, specifically designed for open rainscreen cladding, the FassadenClip® system not only caters for a concealed fix but also improves overall performance. By promoting ventilation and eliminating the risk of over-driven screws, this system safeguards against moisture infiltration. The second method is F-BohrFix® ZB, which has been created by timber engineers to provide a secret-fix solution for “tongue and groove” profiled cladding, for example our RW119 profile.

Secret fixing is particularly advantageous when installing painted cladding, as the painted face remains untouched, ensuring a pristine finish. This combination has been utilised by Annie Kenyon Architects on the right, resulting in a striking final result!

Upper Kennerty Mill | Thermopine RW014 , Microtex, Secret Fix RAL 7021 | Annie Kenyon Architects | Hatson Creative
Upper Kennerty Mill | Thermopine® RW014, Microtex®, RAL 7021 | Annie Kenyon Architects | Hatson Creative

Sleek charm for home exteriors

The homeowners of this bright, contemporary abode chose to expand their living space, opting for SILA Select® Siberian Larch Cladding in RW014 profile, creating this beautiful home extension. The uniform, sleek appearance of the secret-fixed timber enhances this already stunning home, and we love it!

SILA Select RW014 Secret Fix SiOOX | AW Architect | Douglas Gibb Photography
SILA® Select Siberian Larch RW014 SiOO:X | AW Architects | Douglas Gibb Photography

Upper Kennerty Mill, pictured below, uses Russwood Thermopine® factory coated with RAL 7021, to transform this historic 1838 mill into a breath-taking, modern family home. The dark, rich shade of this cladding paired with a secret fix finish forms a striking visual against the greenery of its surroundings.

Upper Kennerty Mill | Thermopine RW014 , Secret Fix RAL 7021 | Annie Kenyon Architects | Hatson Creative
Upper Kennerty Mill | Thermopine® RW014, Microtex®, RAL 7021 | Annie Kenyon Architects | Hatson Creative

The private home situated in West London pictured below utilises secret fix with black painted Accoya® to create a smooth surface whereby the cladding has been installed diagonally to create a visually captivating architectural statement. This is an example in which secret fixing was absolutely needed to achieve the desired aesthetic – and in our opinion, was the perfect design choice!

Expert View

The FassadenClip® needs to be fixed with two screws on the back of the board and one screw on the batten meaning it does take longer to install, but it’s that extra care and detail that can really elevate the project.
Image of Roxana Cercelaru Roxana Cercelaru Senior Architectural Liaison Technician

Benefits of using secret fix timber cladding

Secret fix timber cladding offers numerous advantages when it comes to weathering and enduring harsh environmental conditions. Unlike traditional cladding systems with visible fixings, secret fix cladding minimises opportunities for water infiltration and moisture retention, which are common culprits for weather-related damage. By preventing moisture from penetrating the cladding, secret fix systems significantly reduce the chances of rot, warping, and mould growth that can compromise the integrity of the cladding material over time.

This project by Galmstrup Architects, which sits on the harbour and is exposed to the elements, effectively makes use of secret fix timber cladding, to create this gorgeous and unique design.

Eyemouth Fishmarket | Thermopine RW119 Microtex® Secret Fix SiOOX Mid Grey | Galmstrup Architects | Nicholas Kane Photography
 Eyemouth Fishmarket | Thermopine® RW119 Microtex® SiOOX Mid Grey | Galmstrup Architects | Nicholas Kane Photography
Quarry Rd | SILA AB RW014 | Anderson Bell + Christie Architects | Andrew Lee Photography
Quarry Road | SILA® Select Siberian Larch RW014 | Anderson Bell + Christie Architects | Andrew Lee Photography

With secret fix, the absence of visible screws also contributes to a more streamlined surface, leaving fewer nooks and crannies where water can pool or accumulate. These structural benefits are not the only advantages, as the aesthetic gains are equally compelling. An illustrative example of this can be seen on the left, in this captivating office building crafted by Anderson Bell + Christie Architects. Through the artful combination of horizontal and vertical cladding and a tongue and groove profile, this architectural masterpiece exudes a striking visual allure that seamlessly blends form and function.

If you are interested in using secret fixings on your next project, get in touch with our cladding sales team who will be happy to assist you.


Products Used

FassadenClip®

An innovative secret-fix solution for open rainscreen cladding.
View Product

F-BohrFix® ZB Screws

For optimal fastening of tongue and groove cladding.
View Product

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