Window Shape Guide
Shutters for Triangles, Apex & Shaped Windows
Loft conversions, vaulted gables and feature porthole windows — the awkward shapes that nothing else fits. Hand-built shutters work where curtains and blinds physically can't.
Most Common Request
Loft apex (triangle)
Louvres
Usually fixed
Min. Triangle Rise
250mm
Best Material
Hardwood / ABS
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Why shaped windows are a shutter's natural home
A loft conversion in a 1930s semi around Padgate or Bewsey almost always produces an apex window — a triangle of glass following the line of the roof. Curtains can't follow the angle. Blinds either chop off the triangle or leave it permanently uncovered. Shutters are the only window dressing that can be built to the exact geometry of the opening.
Shapes we build most often in Warrington
Apex triangles on loft conversions across Padgate, Bewsey, Orford and Latchford. Usually paired with a rectangular tilting section below — the triangle stays fixed, the rectangle controls light.
Angled tops (raked rectangles) on loft dormer windows and on modern feature windows in Chapelford and Omega new-builds.
Circles (portholes) on coastal-style new-builds and on the small over-door windows of certain 1930s semis in Penketh and Westbrook.
Pentagon / hexagon feature windows on modern Cheshire self-builds. Each side is built as a separate fixed louvre section meeting at mitred joints.
Loft windows: heat is the real problem
The single biggest reason Warrington loft-conversion owners call us is summer heat. South or west-facing loft glass under a black-tiled roof can push bedroom temperatures past 28°C in July. Shaped shutters with fixed louvres angled downward deflect direct sun off the ceiling and cut perceived room temperature meaningfully — without losing the daylight when the louvres are flat.
For loft bathrooms (very common in Warrington dormer conversions) we always specify ABS waterproof — condensation off a hot shower onto a hardwood louvre will eventually cause issues.
Common Questions
Frequently asked
Will louvres tilt on an angled-top shutter?
On the angled section the louvres are usually fixed (set at a chosen angle, normally horizontal). The lower rectangular section tilts as normal. For loft windows we typically set fixed louvres at a downward angle to deflect sunlight off bedroom ceilings.
Can you do a perfect circle (porthole) shutter?
Yes — built as a fixed sunburst circle. Common on coastal-style new-builds and on the small porthole windows above front doors of some 1930s semis in Penketh and Orford.
What's the minimum size for a triangle shutter?
We've built triangle tops as small as 250mm rise. Below that the louvre count gets too low to look right; we'd usually recommend a fixed solid panel painted to match.
Do shaped shutters cost a lot more?
Roughly 30–50% more than the equivalent rectangular shutter of the same size, depending on geometry. The frame is hand-built rather than CNC-batched, which is where the extra cost sits.
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