Vertical timber cladding can make a compact garden room feel taller, give a house extension a clean architectural rhythm or unify a substantial commercial façade. The direction of the boards is only the first decision. Profile, species, installed cover, cavity design, fixings, openings and weathering expectations all shape the finished elevation. This guide explains the choices to resolve before requesting samples or a project-specific quote in the South West.
Why choose vertical timber cladding?
Vertical boards draw the eye upwards and create a strong, ordered rhythm. Narrow boards and defined shadow lines can make an elevation feel taller and more contemporary, while wider board-on-board arrangements give barns, workshops and rural homes a deeper, more traditional character. The same principle can work on a shed, garden studio, full house or large public building.
Orientation also changes how a façade relates to neighbouring materials. Vertical timber can sit neatly beside tall windows, standing-seam metal, stone piers or areas of render. It is often used to distinguish a new extension from an existing building without losing the warmth of a natural material.
The visual effect depends on more than turning a familiar board through ninety degrees. Some profiles are designed for one orientation only, while the batten arrangement and details around openings must suit vertical drainage. Always confirm that the exact product is offered for vertical external use and assess it as part of the complete wall design.
- Emphasises height and creates a clear architectural rhythm
- Works on compact outbuildings and large commercial elevations
- Pairs well with render, masonry, glazing and metal
- Available in closed, overlapping and open-jointed systems
Which vertical cladding profile is right?
Board-on-board cladding uses a second layer of boards to cover the gaps between the first. The resulting depth and shadow suit agricultural buildings, barn conversions and contemporary rural schemes. Board widths, overlaps and setting-out choices affect both the appearance and the quantity of timber required, so quotations should use the intended installed cover rather than nominal board width.
Tongue-and-groove and shadow-gap profiles create a more continuous surface. Tongue-and-groove boards interlock, while a shadow-gap profile forms a controlled recess between boards. The exact joint geometry, fixing position and usable face vary by manufacturer; similar profile names do not guarantee interchangeable dimensions or installation guidance.
Open-jointed rainscreen battens produce pronounced linearity and allow the backing layer to remain partly visible. They need a wall build-up specifically designed for open joints, including an appropriate membrane and considered junctions. A sample panel is especially valuable because batten width, gap size and backing colour can dramatically change the elevation.
Best timber species for vertical cladding
Canadian cedar is a popular option for refined vertical façades. Its relatively low weight, stability and colour variation can suit detailed residential and commercial work, subject to the grade and product specification selected. UK cedar usually has more knots and lively character, making it appealing where local provenance and a natural, less uniform face are part of the brief.
Larch creates stronger grain and a more robust visual character. UK larch can work particularly well on barns, garden buildings and larger value-conscious elevations, while imported larch products may provide different grading and machining characteristics. Origin, grade and finished quality should be confirmed rather than assumed from the species name alone.
Thermowood offers a consistent toasted tone and improved dimensional stability compared with its unmodified source timber. Treated European redwood, Red Grandis and other supplier-developed systems may also be suitable for coated or project-specific finishes. Compare representative samples of the actual grade, profile and finish; one idealised board does not show the variation across a full elevation.
Vertical timber cladding details that matter
A successful vertical elevation depends on how water is drained and the cavity is ventilated. Vertical boards commonly require a support arrangement that provides suitable fixing positions while maintaining drainage and airflow behind the cladding. Batten sizes, spacing, membranes, insect mesh and cavity barriers are project-specific design matters, not details to copy from a generic photograph.
The base of the wall, roof junctions, parapets, corners and interfaces with other materials should be resolved before quantities are finalised. At windows and doors, heads need to direct water out, cills need to throw it clear and reveals must integrate with the wider weathering strategy. The cleanest projects make trims and junctions part of the architecture rather than improvised additions on site.
Board ends deserve particular attention because vertical cladding presents more end grain at horizontal junctions. Required clearances, end treatments, flashings and factory finishing should follow the product supplier’s guidance and the project design. Drawings should also show where ventilation openings remain continuous and how fire-safety measures are integrated where required.
Fixings, movement and installation planning
Timber moves as its moisture content changes. Board width, profile, species, moisture condition and exposure influence that movement, so fixing positions and joint allowances should come from the chosen product’s guidance. Boards should be stored and handled appropriately before installation, with damaged or unsuitable pieces identified before they become part of the façade.
Fixings need to be compatible with the timber, any treatment or coating and the site exposure. Their material, head style, diameter, length and distance from board edges all affect performance and appearance. Dark or open-jointed façades can make fixings particularly visible, so the visual decision should be made alongside the technical specification rather than afterwards.
A setting-out plan reduces awkward cuts and inconsistent board widths around openings. Establish datum lines, module widths and corner conditions before the main elevation begins. On larger schemes, an agreed benchmark area or sample panel helps the designer, contractor and client align on workmanship, colour range, joint lines and acceptable natural variation.
Weathering, colour and maintenance
Uncoated exterior timber changes colour as sunlight and weather affect its surface. Fresh cream, gold, red and brown tones generally move towards grey, but the transition is rarely identical on every wall. Areas protected by eaves or neighbouring buildings can remain warmer for longer than exposed sections, while rain patterns may be visible during the weathering period.
A compatible exterior coating can retain or change the colour, but it introduces an inspection and maintenance requirement. Factory-applied translucent or opaque systems may offer more controlled application than finishing after installation. Preparation, cut-end treatment, application conditions and recoat guidance should be confirmed for the exact timber and finish.
South West exposure varies considerably. A sheltered extension in Bath or Bristol may not weather like a coastal building in Dorset, Devon or Cornwall. Discuss orientation, prevailing weather, nearby vegetation and access for future care before choosing between natural silvering, a pigmented finish, a black coating or another appearance strategy.
What affects vertical timber cladding cost?
The board price is only one part of a meaningful comparison. Species, grade, finished dimensions, profile, installed cover, length mix, surface texture, factory coating, treatment, order quantity and supporting documentation all influence a supply quotation. Bespoke machining, special finishes and project-specific certification can add further cost.
Profiles use timber differently. Board-on-board systems include overlaps and two board layers; tongue-and-groove products lose some nominal width within the joint; open-jointed systems need a considered backing layer. Calculate quantities from the cover achieved in the intended arrangement, then allow appropriately for cuts, openings, corners, trims and reasonable wastage.
Delivery, access and programme also matter. A small garden room may be assessed from dimensions, photographs and a simple sketch, while a school, workplace or housing scheme is better priced from elevations, schedules and known technical requirements. The Cladding Centre does not reduce either enquiry to a generic online rate: accurate information produces a more useful comparison.
What to include in your quote request
Start with the project location and scale, then share elevation dimensions or drawings where available. Note whether the cladding is for a shed, garden room, extension, complete home, housing development or commercial building. This helps suppliers understand likely quantities, delivery needs, documentation and programme from the outset.
Describe the visual brief as clearly as possible: preferred orientation, approximate board width, joint character, species, colour, texture and whether natural weathering is acceptable. Reference photographs can communicate intent, but a physical sample of the proposed product is still important before a final decision.
For projects across Gloucestershire, Bristol, Somerset, Wiltshire, Dorset, Devon and Cornwall, we can help compare suitable species, profiles and finishes before obtaining supply options. The same considered process applies to a few square metres for an outbuilding and a substantial documented façade package.
- Project postcode and intended use
- Approximate area, elevations or dimensions
- Preferred profile, orientation and board rhythm
- Species, grade, texture and finish preferences
- Known fire, sourcing or technical documentation needs
- Delivery timing and any site-access constraints