Architraves & Sills

Design Options for Polystyrene Architraves and Sills

Polystyrene architraves and sills are lightweight architectural mouldings installed around windows, doors and other façade openings. Architraves frame the sides and upper edges of an opening, while sills create a defined horizontal finish beneath windows.

These features add proportion, depth and architectural detail to residential and commercial façades. They can be designed to complement contemporary, Hamptons, traditional and other architectural styles.

Thermatech manufactures architraves and sills from high-density expanded polystyrene (EPS), finished with a durable exterior coating. Profiles can be customised to suit specific opening dimensions, façade designs and project requirements.

Benefits of Lightweight Polystyrene Architraves and Sills

• Lightweight Construction: EPS profiles are significantly lighter than comparable concrete or masonry features, making them easier to transport, handle and position while placing less additional load on the supporting structure. Final suitability and fixing requirements should always be confirmed for each project.
• Custom Design Options: Profiles can be manufactured in different widths, projections and shapes to suit individual openings and complement the building’s architectural style.
• Architectural Definition: Coordinated architraves and sills help frame openings consistently, introduce depth and shadow lines, and create a more considered exterior appearance.
• Durable Exterior Finish: When correctly installed, sealed and painted, Thermatech mouldings are designed for exterior applications and provide a durable, low-maintenance decorative finish.
• Consistent Detailing: Custom manufacturing allows profiles to be sized and repeated consistently across multiple windows, doors and building elevations.

Straightforward Installation for Experienced Trades

Compared with heavy masonry features, lightweight EPS architraves and sills are generally easier to transport, position and install. Installation should be completed by suitably experienced tradespeople using appropriate access equipment, approved fixing systems and good building practices.

1. Confirm Dimensions: Check the finished opening measurements, profile dimensions and fixing requirements before manufacture or installation.
2. Prepare the Surface: Ensure the supporting surface is sound, clean and suitable for the nominated adhesive and fixing system.
3. Cut and Position: Profiles can be accurately cut and adjusted using suitable trade tools to create project-specific lengths, joints and mitred corners.
4. Approved Fixing Methods: Install the mouldings using approved construction adhesives and any additional fixing methods required for the project.
5. Jointing and Painting: Once installed and properly jointed, the finished profiles can be coated with a suitable exterior acrylic paint intended for masonry surfaces.

Reliable Australia-Wide Delivery

Thermatech supplies builders, designers and homeowners across Australia. Our architectural mouldings are carefully packaged to help protect the profiles during transport and ensure they arrive ready for installation.

Add definition and architectural detail to your next project with custom architraves and window sills. Contact Thermatech’s Gold Coast team to discuss your design, request product information or obtain a quote.

Fill in our quick contact form and we will contact you with full details and options.