
Geometry, beautifully controlled.

Triangle Window Shutters: Custom shutters for gable and loft windows
Triangle window shutters offer a striking way to enhance architectural windows while maintaining light control and privacy. Whether fitted to gable end windows, loft triangles, or attic apex glazing, these shutters are designed to follow every angle with absolute precision.
At Long Island Shutters, we specialise in made-to-measure shutters for challenging shapes and spaces. Every set of triangular plantation shutters is measured, templated, and installed by our in-house carpenters to ensure perfect proportion, symmetry, and functionality — with no gaps, no guesswork.

Bespoke triangle shutters
Every triangle is unique — which is why we create bespoke triangle shutters to suit your window’s exact dimensions and slope.
We take precise measurements and create a template of your window’s frame before manufacturing. Each shutter is then hand-assembled and fine-tuned for a seamless fit, even on steeply angled or uneven surfaces.
Benefits:
Perfect fit for all window angles and pitches
Improved insulation and privacy
Choice of operable or fixed louvres
Finished in your choice of paint, stain, or custom colour

See how triangular shutters transform spaces
Bring symmetry, privacy, and style to your loft or gable windows. Bring symmetry, privacy, and style to your loft or gable windows.
Best shutters for triangular windows in Essex
We install custom triangular shutters across Essex and surrounding areas, measuring every angle to the millimetre for a tailored, lasting fit. These shutters don’t just follow the lines of your windows — they enhance them, drawing the eye upward and highlighting architectural symmetry.

Shutters for gable end windows
Gable end windows bring dramatic light and space into a room — and our shutters help you control both. The clean, angular design of gable windows can be challenging to dress with curtains or blinds, but triangular shutters provide a made-to-measure solution that enhances the structure instead of hiding it.

Plantation shutters for loft and gable windows
We craft and install plantation shutters that complement the shape of your gable glazing while offering the same flexibility as standard designs — adjustable light, airflow, and privacy.

Custom plantation shutters for attic windows
We design shutters for attic and loft spaces, where angles can vary significantly. Each one is measured to fit tightly, blocking draughts and allowing smooth operation — even in compact areas.

Loft triangle window shutters
Loft triangle shutters are particularly effective in converted lofts, where windows often sit within sloped ceilings. Our designs follow the roofline precisely, creating clean visual flow and balance.
They add warmth, privacy, and structure while letting in soft, controlled light — perfect for bedrooms, home offices, or studios.

Angled triangular shutters
Every angled triangular shutter is engineered to follow the exact geometry of your glazing. Whether the angle is shallow or steep, we use precise templating techniques to ensure accuracy.

Plantation shutters for apex windows
Apex shutters are one of our most popular solutions for high gable ends or vaulted ceilings. They complete the symmetry of the triangular glazing while maintaining comfortable light levels throughout the day.

Shutters for triangular attic windows
Our triangular attic shutters help create privacy and comfort in upper-floor spaces. They follow the contours of the window perfectly, giving even the smallest or most awkwardly shaped windows a refined, finished look.

Benefits of triangle window shutters
Perfect fit for gable, loft, and apex windows
Follows any angle with exact precision
Beautiful architectural symmetry
Enhanced insulation and energy efficiency
Easy light and privacy control
Custom finishes to suit your décor
Adds value and visual impact to your home
Please browse our gallery to explore real installations across Essex.
Explore our range of custom finishesOur process
Initial enquiry
Contact us to discuss your project.
Initial enquiry
Contact us to discuss your project.
Consultation
Chris or Pete visits your home to measure each angle precisely.
Consultation
Chris or Pete visits your home to measure each angle precisely.
Quotation
Receive a clear, same-day quote — no hidden costs.
Quotation
Receive a clear, same-day quote — no hidden costs.
Follow-up
Rick checks in after a week to answer any questions.
Follow-up
Rick checks in after a week to answer any questions.
Order confirmation
A 50% deposit secures your order.
Order confirmation
A 50% deposit secures your order.
Manufacturing
Shutters are crafted from your exact template and design.
Manufacturing
Shutters are crafted from your exact template and design.
Installation
Our skilled fitters install carefully and cleanly, leaving your space tidy and complete.
Installation
Our skilled fitters install carefully and cleanly, leaving your space tidy and complete.

Why choose us
Expertise in complex shapes
We specialise in angled, arched, and triangular windows.
Owner-led service
Consultations are handled personally by Chris or Pete.
In-house craftsmanship
Our carpenters fit every shutter themselves — no subcontractors.
Made to measure
Every shutter is designed for your exact window dimensions.
Fair pricing
Clear, competitive quotes and our like-for-like Price Promise.
10-year warranty
Confidence in every installation.
Local focus
Serving Essex and surrounding areas with personal, dependable service.

Custom triangular shutters
Our custom triangular shutters are made to fit any shape, size, or pitch of window. From sharp-angled loft triangles to wide gable ends, we measure each side carefully to ensure seamless alignment.
Why custom matters:
Each shutter is built from an exact template
Perfect symmetry across panels
Enhanced insulation and durability
Available in multiple finishes to suit your décor
Commonly Asked Questions
Yes. Each shutter is built from a template of your window to ensure perfect alignment and fit.
Yes, depending on the shape and size, they can be fixed or operable for light control.
Absolutely. They are ideal for gable-end glazing, loft conversions, and attic windows.

Ready to complete your home with perfect geometry?
Book your consultation with Chris or Pete — we’ll measure, design, and install shutters that elevate your home’s architecture.





