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Dimensions: 281 x 294 x 65 mm.
(Height x Width x Depth)
€33.80
A keystone, 293 mm wide, 282 mm high and 65 mm deep, with a tapered face with a deep recessed panel. Set at the centre of the head of a window, door or arch, it is the finishing touch that makes a moulded surround look like real stonework, and it sits over the top of…
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Dimensions: 234 x 222 x 67 mm.
(Height x Width x Depth)
€29.90
A keystone, 221 mm wide, 232 mm high and 68 mm deep, with a tapered face carved with a scrolled console. Set at the centre of the head of a window, door or arch, it is the finishing touch that makes a moulded surround look like real stonework, and it sits over the top of…
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Dimensions: 213 x 200 x 54 mm.
(Height x Width x Depth)
€29.90
A keystone, 200 mm wide, 211 mm high and 51 mm deep, with a tapered face with a raised, fielded panel. Set at the centre of the head of a window, door or arch, it is the finishing touch that makes a moulded surround look like real stonework, and it sits over the top of…
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Dimensions: 206 x 256 x 75 mm.
(Height x Width x Depth)
€30.80
A keystone, 255 mm wide, 206 mm high and 75 mm deep, with a plain tapered face with a stepped, layered outline. Set at the centre of the head of a window, door or arch, it is the finishing touch that makes a moulded surround look like real stonework, and it sits over the top…
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Dimensions: 306 x 255 x 75 mm.
(Height x Width x Depth)
€42.80
A keystone, 253 mm wide, 306 mm high and 75 mm deep, with a tall, plain tapered face with a stepped, layered outline. Set at the centre of the head of a window, door or arch, it is the finishing touch that makes a moulded surround look like real stonework, and it sits over the…
The Crowning Jewel for Your Arches and Windows
Give your home the architectural authority it deserves with our stunning range of Keystones. Often called the "jewelry" of a building's exterior, a keystone instantly draws the eye upward, turning a standard doorway or window into a grand entrance. Whether you are renovating a forever home in the Irish countryside or adding character to a new build in the suburbs, these accents provide that bespoke, high-end finish that sets your property apart.
Why Choose Modern Polyurethane?
Forget the headache of heavy, expensive stone that requires specialist masons to install. Our collection focuses on "affordable luxury"—giving you the timeless aesthetic of traditional masonry with none of the drawbacks. Because we craft these from high-density polyurethane, you get distinct advantages:
- Effortless Installation: Lightweight materials mean you or your carpenter can fit these quickly during the second fix stage, saving you significant labor costs.
- Irish Weather Proof: Unlike timber that rots or poor-quality plaster that cracks, our keystones are impervious to moisture and temperature changes, making them perfect for our damp climate.
- Perfect Finish: Every piece comes primed and ready for painting, allowing you to match your exterior colour scheme seamlessly.
Create a Cohesive Design
A keystone looks beautiful on its own, but it truly shines when you integrate it into a wider design concept. For a fully transformed facade, pair your keystone with our exterior arch frames to define the shape of your windows. If you want to heighten the drama above your doors, consider adding one of our elegant pediments for a stately, classical effect.
Don't stop at the outside walls. Many of our customers carry this attention to detail indoors, using our moisture-resistant wall panels to create flow and consistency from the driveway right through to your hallway and bathrooms.
Ready to elevate your home's exterior character? Browse our collection of Keystones below and find the perfect finishing touch for your project today.