Frequently Askeed Questions (FAQ)

Invisible Grille FAQs

Is an invisible grille worth it?

Answer: For many Singapore high-rise homes, yes. An invisible grille can be worth it when you want an added safety barrier without making your windows or balcony feel boxed in. We recommend choosing the grille specification around how the space is used, including children, pets, balcony exposure and whether you need an openable section. If maximum intrusion deterrence is your main concern, particularly on a low floor, a rigid metal grille may be the better fit.

Are invisible grilles HDB approved?

Answer: Invisible grilles can be suitable for HDB homes, but approval is location- and flat-specific rather than a universal product label. Installations at service yard or balcony parapets require a permit, and the grille configuration must follow HDB-approved designs for that flat. Window grille installations generally do not require a permit if they are installed internally.

How much does an invisible grille cost?

Answer: As a budgeting guide, our installation for non-openable systems ranges from S$7.00 to S$15.00 per sq ft. The most accurate cost comes from the actual measurements and specifications of your opening, because a narrow-gap pet setup, an openable frame or a difficult installation can change the total significantly. Treat online price-per-square-foot figures as a starting point rather than a final quotation.

How much does an invisible window grille cost?

Answer: For a single window, the cost depends on its width and height, how many panels are needed, the cable spacing and whether the grille is fixed, sliding or casement-style. As a broad market reference, Singapore price guides indicate starting prices of around S$170 per window for fixed invisible grilles. We recommend a quotation based on actual measurements rather than relying on a generic per-window price.

What are the downsides of using an invisible grille?

Answer: Invisible grilles offer a clean and visually open view, but they are not the best answer to every problem. Cable systems are intended mainly for fall prevention rather than maximum anti-intrusion security. For balconies, invisible grilles also do not replace blinds, screens or other products designed to protect against sun, rain or insects.

How long do invisible grilles typically last?

Answer: A well-installed invisible grille system can often serve for around 5–10 years or longer, but the actual lifespan depends on where it is installed. For exposed balconies, we recommend paying attention to the stainless steel grade, cable tension and condition of the anchoring. Periodic inspection is sensible, especially where the invisible grille receives direct sun and rain.

Are invisible grilles suitable for homes with children?

Answer: Invisible grilles can provide an additional barrier at windows and balconies while keeping the space visually open. However, no installation should replace active supervision or other appropriate child-safety measures. The suitability of a system depends on the opening, cable spacing, anchoring and installation quality.

Are invisible grilles suitable for cats and other pets?

Answer: Invisible grilles can create a barrier for pets, but the cable gap size and configuration must suit the animal and the opening. Cable spacing, the size of the pet, climbing behaviour and the condition of the installation all matter. Let us assess the proposed installation areas and layout. Do not assume that every installation or cable spacing is suitable for every pet.

Are invisible grilles safe from theft?

Answer: Invisible grilles are designed primarily for safety inside the home, helping to reduce fall risk while preserving the view. They are not a substitute for a dedicated anti-burglary grille. If theft or forced-entry resistance is your main concern, especially for a low-floor unit or an easily accessible opening, we recommend considering a rigid metal security grille or other security measures alongside your safety needs.

Which is better for my balcony, an invisible grille or an iron grille?

Answer: Choose based on what matters most for your balcony. If you want a safer high-rise opening while keeping the panoramic view, an invisible grille is usually the better fit. If your first priority is maximum rigidity or a stronger visible deterrent against intrusion, an iron or other rigid metal grille may suit you better. We recommend assessing the balcony height, household members or pets, exposure, access needs and HDB or MCST requirements before deciding.

Quick comparison

Factor Invisible grille Iron / traditional grille
View and light Best for a visually open balcony; slim cables minimise obstruction. More visible bars and frames can partially block the view.
Fall / pet safety A strong option when spacing, tension and anchors are correctly specified. Also strong when bar spacing, locks and anchoring are correctly specified.
Burglary deterrence Limited compared with rigid bars; cables can be cut with suitable tools. Generally provides a stronger visual and physical deterrent.
Maintenance Usually low; quality stainless steel systems avoid repainting, but tension and condition should still be checked. Iron or mild-steel systems may need coating, rust treatment or repainting over time.
Balcony feel Minimal, modern and open. More solid, enclosed and traditional.
Best suited to High-rise homes prioritising views, light and fall or pet safety. Homes prioritising rigidity and stronger intrusion deterrence.

On smaller screens, scroll the table sideways to compare.

Do invisible grilles block the view or natural light?

Answer: Invisible grilles consist of slim cables, so they generally create less visual obstruction than traditional metal grilles. They are designed to help preserve the open feel of a window or balcony while adding a safety barrier. The exact appearance depends on the cable layout, spacing, viewing angle and installation.

Can invisible grilles be opened for cleaning or access?

Answer: That depends on the system and layout selected. Some openings or areas may require a fixed installation, while others may require an openable section for access or maintenance. Let us know your preferences and access requirements so these can be considered before the quotation is prepared.

Will invisible grilles prevent rain, heat, noise or insects from entering?

Answer: No. Invisible grilles are primarily intended as a safety barrier and do not function as weatherproofing or insect screens. They do not by themselves stop rain, heat, noise or insects. If you need protection from mosquitoes or weather, ask about a separate product designed for that purpose.

How do I choose the right cable spacing?

Answer: The appropriate spacing depends on the purpose of the grille, the opening and the needs of the household, including children or pets. Spacing should be considered together with cable tension, anchors and the overall installation design. We recommend discussing how the space is used before deciding on a specification, rather than choosing spacing based on appearance alone.

What should I check before confirming an invisible grille quotation?

Answer: Before confirming, check the measured coverage, cable gap size, configuration, including fixed or openable sections, installation scope and warranty terms. A detailed quotation following an on-site assessment helps ensure that all installation details are properly considered and that the quotation is accurate and tailored to your home's requirements.