Perforated Brick Walls in Hong Kong: Ventilation vs. Privacy

We recently came across Twilight House by India’s Spacefiction Studio, which wraps a central courtyard in a perforated brick wall to balance ventilation, light and shadow, and privacy all at once. It is a beautiful concept, but we work in Hong Kong, where flats run to a few hundred square feet with low ceilings to match. Can this kind of design really be copied wholesale? As designers, we do not present a design as flawless. To be direct: perforated brick walls do have real advantages, but Hong Kong’s residential environment presents more constraints and risks, and they deserve an honest look.

The Real Pitfalls Hong Kong Homes Face

First, there is the structural constraint: most private housing in Hong Kong uses reinforced concrete frames, and you cannot casually alter external walls or load-bearing walls. Adding a brick wall indoors increases the load on the floor slab, and it may require structural assessment and Buildings Department approval, so it cannot simply be built at will. Second, there is the privacy problem: a perforated wall lets both sound and sightlines through, and in Hong Kong, where flats sit close together, your neighbour’s TV or conversation can easily carry through, something you need to be prepared for. Third, soundproofing is already limited with a solid brick wall, and perforating it makes things worse; use it between a bedroom and living room and your sleep will suffer. Fourth, there is the question of wasted space: a brick wall typically runs from half a brick thick (about 90mm) to a full brick (about 230mm). In a small flat, that thickness eats into precious usable floor area. Finally, cleaning becomes a hassle: the holes in the brick collect dust easily, and Hong Kong’s humid climate encourages mould, meaning more time and effort spent on upkeep.

Practical Alternatives for Hong Kong

If you still love that sense of openness, consider a perforated metal screen instead (lightweight, removable, and easy to clean), or glass blocks (which keep the light while offering better soundproofing), or even a vertical green wall paired with proper ventilation. We once had a client who wanted a perforated brick wall to divide the bedroom from the living room. After we ran the numbers on floor loading and noise, we switched to an aluminium perforated screen combined with frosted glass, a similar effect but far more practical.

If you are facing a similar design question, please contact our team to discuss your project.