Ideas Library · Exterior
How the Cladding Actually Turns the Corner
The corner is where every cladding system is judged, and there are only a few ways to make one. Pick the method that suits the material and the exposure, then repeat it at every corner, because a building with three different corner details reads as three different buildings.
Spaces:house facadeextensioncorner elevationoutbuildinggarden room
Style:crispdetail-ledcontemporaryresolved
Where this idea works
Where this idea works
Contexts this direction tends to suit — and, honestly, where it may not.
- Any board, panel or slip cladding with external corners to resolve
- Buildings with several corners where consistency would visibly help
- Exposed corners where the detail has to work as weathering as well as appearance
- Elevations where the corner is the most-seen part of the cladding
Where it may not fit
Where it may not fit
- Materials whose format cannot be mitred or returned, unless a trim is acceptable
- Situations where the preferred method cannot be built to the tolerance available — a question for a qualified professional
- Corners where a projecting trim would conflict with a boundary or a path
Planning
Planning considerations
- The corner is where two elevations' setting-out has to agree, so it is decided with the setting-out rather than after it
- A mitre depends on tolerance and on the material's edge, and whether it can be held is a question for the designer and the installer
- Purpose-made corner units are ordered, so the schedule has to be settled early
- Corners face weather from two directions, which makes this a weathering decision as much as a visual one
Layout
Layout considerations
- A trim announces the corner, a mitre denies it, and stopping one plane short turns the corner into a shadow
- The corner detail decides whether the building reads as a solid object or as a series of separate faces
- Internal corners usually need a different solution from external ones, and both should be decided
- The corner is seen in the round, so it has to resolve at the base and the head as well as along its length
Materials & finishes
Materials and finishes to discuss
Named generically as starting points to discuss with professionals — not specifications, and not priced.
Consider:corner trims and profilespurpose-made corner or return unitsbrick slip corner piecescladding support at the cornersealants and backer rodsfixings at the return
- Corners take driving rain and wind from two directions, so detailing there is critical — a professional matter
- Mitred edges expose cut material and often rely on a sealed joint that has a service life
- Movement between the two planes meeting at a corner has to go somewhere
Maintenance & durability
Maintenance and durability questions
- Sealed corner joints need periodic inspection and eventual renewal
- A damaged corner piece is the hardest element to replace without disturbing the runs either side of it
Professional review
What to ask a qualified professional
Bring these questions to a designer, contractor or the relevant qualified professional or authority.
- Which corner methods does this material and system actually support?
- What tolerance would a mitre need here, and can it be held on this background?
- How would you weather the corner against driving rain from two directions?
- Are purpose-made corner units available for this material, and when would they need ordering?
- How does the corner detail resolve at the base and at the top of the wall?
More ideas
Related ideas
Brick and Render Mix →Pairing a brick base or band with render above so two systems share one elevation, and the junction, weathering and movement questions where they meet.Composite Cladding →Choosing wood-polymer composite boards for a timber-like elevation with reduced upkeep, and the colour, expansion and fixing questions to weigh.Contrast-Trim Scheme →Defining an elevation with a main colour plus contrasting frames, fascia and door, and the coordination and restraint questions that keep accents deliberate.Fibre-Cement Cladding →Cladding an elevation in factory-finished fibre-cement boards for a timber-like line, and the cutting, fixing and dust questions to plan around.Mixed-Material Facade →Composing an elevation from two or three materials by zone to break up bulk, and the junction, weathering and restraint questions that keep it coherent.Standing-Seam Metal Accent →Using standing-seam metal on a defined zone like a gable or dormer for crisp vertical lines, and the movement and dissimilar-metal questions to plan for.Timber Cladding Facade →Cladding an elevation in natural timber boards for warmth and grain, and the weathering, movement and ventilation questions that come with a living material.The Paving-to-Water Edge →Explore three positions where a hard surface meets water — a declared coping, a hidden edge, or a planted shelf — because that choice decides how water reads.
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