Glass Bricks

Why choose glass bricks?

Whether you call them glass blocks, plastic glass bricks or simply glass bricks, these modular units combine the strength of masonry with the translucency of glazing. Designers across Aotearoa are using them for:

• Exterior feature walls that capture daylight while maintaining privacy.
• Internal partitions that borrow light without compromising fire or acoustic performance.
• Statement kitchens and bathrooms inspired by the iconic Brick Bay Glass House.
• Retro-meets-modern facades that pair brilliantly with metal cladding or timber cladding.

Design flexibility & aesthetics

Shapes and sizes

Standard glass brick size in NZ is 190 × 190 × 80 mm, yet half blocks, corner units and slender 60 mm options enable creative detailing. Custom formats from specialist brands such as Brickworks push boundaries further.

Colours & textures

Beyond classic clear blocks, explore amber glass bricks, deep blues, or acid-etched diffusion for soft light. Combining coloured units in a pixel-like mosaic can transform stairwells and entryways.

Cost considerations

Glass bricks price NZ varies by finish and quantity. Indicative supply-only costs:

• Standard clear block: $15–$22 per unit.
• Coloured or frosted block: $20–$35 per unit.
• High-performance thermal block: $40+ per unit.

Allow 20–30 % extra for mortar, reinforcing rods and specialist installers. Use our “Request a quote” tool to obtain project-specific rates and compare glass brick wall price against alternatives such as concrete cladding or composite cladding.

Installation & compliance

Glass bricks are laid similarly to masonry, but require stainless-steel reinforcement every second course. Movement joints at edges prevent cracking. NZ Building Code clause B1 (Structure) applies, and AS/NZS 3700 governs masonry strength. For technical details, see BRANZ guidance on glass block construction.

DIY vs professional install

Wondering how to lay glass bricks? Small interior screens can be a skilled DIY task, but exterior or load-bearing walls demand a licensed bricklayer familiar with seismic detailing.

Performance advantages

• Thermal efficiency: Hollow blocks trap air, achieving R-values up to 0.8 m²K/W—higher than standard single glazing.
• Acoustic control: Dense glass dampens noise better than lightweight partitions.
• Security: Vandal-resistant units outperform many conventional windows.

Maintenance & longevity

Glass bricks resist UV, salt spray and graffiti. Clean periodically with mild detergent. Re-caulking of perimeter joints may be required every 15–20 years, similar to glazed facade systems.

Pairing with other facade materials

Blend translucent blocks with tactile finishes for depth and contrast. Popular combinations include:

• Glass brick ribbons set within a decorative moulding frame.
• Industrial chic when teamed with weathered steel or metal sheets.
• Warm-cool contrast alongside timber boards.

Choosing suppliers through ArchiPro

ArchiPro connects architects, builders and homeowners with vetted suppliers nationwide. Every listing includes technical documents, CAD details and past project images, so you can specify with confidence.

Ready to source glass bricks for sale NZ? Explore the full selection below, or browse our Cladding & Facades hub for complementary solutions.