Above suspended ceilings
Partitions stopping at ceiling tiles allow sound across the void. Extend to the structural soffit and seal gaps for acoustic separation.
SK Fung installs interior glass partitions for offices, meeting rooms, private offices, home studies and bedrooms, with sliding and folding doors, double-glazed acoustic systems and half-height walls. Choose frosted, filmed, laminated or acoustic laminated glass.
Free on-site measurement, design and quotations. Call 3709 2164 or WhatsApp 6686 7879 to enquire.
Registered Minor Works Contractor MWC(W) 42/2014, with window inspection qualifications. Read the Rw acoustic performance comparison first if meeting privacy matters: thicker glass alone rarely solves sound transmission.
Service Overview
Glass partitions divide offices, studios and home studies while preserving daylight. We design and install fixed walls with sliding or folding doors.
Clarify three things at measurement: visual or acoustic separation, suspended-ceiling or structural-soffit closure, and joint and door sealing. These determine performance and cost, preventing disappointing sound privacy after installation.

Choosing a style
| Style | Method | Applications and trade-offs |
|---|---|---|
| Frameless butt-jointed fixed walls | Silicone joints with minimal framing. | Clear appearance; demanding alignment, weaker acoustic sealing and more difficult single-pane replacement. |
| Aluminium-framed systems | Frames support glass and accommodate seals. | Greater tolerance, acoustic sealing, door and blind options, and potential dismantling and reuse. |
| Sliding glass partitions | Panels move sideways on top-hung tracks. | Save swing space in narrow corridors, but perimeter gaps reduce acoustic performance. |
| Folding glass doors | Multiple leaves stack to one side. | Flexible wide openings; more hardware requires regular care. |
| Double-glazed partitions | Two panes separated by an air gap. | Improved acoustics for meeting rooms and private offices, with greater depth and cost. |
| Half-height glazed walls | Solid lower walls with glass above. | Screen seated sightlines while preserving light; lower walls conceal wiring and sockets. |
| Hybrid timber / metal-framed systems | Glass with decorative frames or posts. | Match interior styles and provide solid areas for screens or whiteboards. |
Coordinate with glass doors and mirror finishes for shared measurements and installation.
Acoustic data
Rw is the weighted sound reduction index in dB, measured in laboratory assembly tests.
| System | Typical Rw, dB | Application |
|---|---|---|
| 10 mm single toughened glass in aluminium frames | About 28–33. | Visual separation and open offices. |
| 12–15 mm single toughened glass | About 34–35. | General room separation. |
| Acoustic laminated glass, approximately 10.8 / 12.8 mm | About 36–39. | Basic speech privacy. |
| Optimized single-glazed systems with effective seals | Up to around 40. | Higher-demand offices with limited budgets. |
| Standard double-glazed partitions with air gaps | About 40–44. | Meeting rooms and private offices. |
| High-specification double glazing with acoustic laminates and optimized cavities | About 45–50; some systems exceed this. | Boardrooms and confidential consultation rooms. |
| Rw | Indicative speech privacy |
|---|---|
| About 25 dB | Normal speech clearly audible. |
| About 30 dB | Loud speech clearly audible. |
| About 35 dB | Loud speech audible but less intelligible. |
| About 40 dB | Loud speech difficult to understand. |
| About 45 dB | Shouting audible. |
| About 50 dB | Shouting barely audible. |
For confidential meetings, consider a system targeting Rw above 40 dB while addressing the sound paths below.
Acoustic priorities
Sound often bypasses acoustic glass through gaps elsewhere in the room.
Partitions stopping at ceiling tiles allow sound across the void. Extend to the structural soffit and seal gaps for acoustic separation.
Doors are often the weakest part: sliding edges and hinged thresholds need effective perimeter and bottom seals.
Uneven floors, raised floors and carpet gaps create paths; seal bases with channels and suitable silicone.
Ducts, cable trays, sockets and discontinuous silicone joints must be addressed individually.
Trim alone does not seal a void between glass and the existing wall; fill and seal the joint.
Rigid clamping increases fracture risk without improving acoustics. Use setting blocks and gaskets for appropriate movement tolerance and sealing.
Glass and privacy
Toughened glass is common; laminated and acoustic laminates improve safety or sound control. Department conditions specify ISO 9001 manufacture and BS EN 14179-1:2016 or equivalent heat-soaking. Barrier-function glazing requires BS EN 12600:2002 Class 1 impact evidence without breakage. Heat-soaking addresses NiS risks also discussed for screens and barriers.
| Method | Features | Trade-offs |
|---|---|---|
| Acid-etched / sandblasted glass | Integral treatment with uniform, durable appearance. | No peeling or bubbles; permanent and generally more costly. |
| Applied film | Patterns, gradients and stripes added later. | Replaceable and economical; edge lifting and durability depend on product and installation. |
| Mid-height frosted / film bands | Screen seated sightlines. | Preserve daylight above and below and provide collision markings. |
| Tinted glass: grey / bronze | Reduce transparency and complement the style. | Reduce daylight; consider small rooms carefully. |
| Switchable privacy glass | Electrical control switches between clear and opaque states. | Flexible but requires planned power, controls and qualified connection, with higher cost and maintenance complexity. |
Processed toughened glass cannot be cut or drilled on site. Locate all door and hardware holes before fabrication using measured dimensions.
Workmanship details
Use base channels and seals, with top channels or trims. For acoustics, extend to the structural soffit and address carpet or raised-floor gaps. Detailing determines performance, appearance and future replacement.
Sliding doors save space but have acoustic gaps. Hinged doors with springs or closers and bottom seals suit meeting rooms. See glass door hardware.
Provide tolerance, vibration cushioning and acoustic sealing. Missing blocks can cause rattling during movement nearby.
Do not hang heavy loads or drill processed glass. Plan solid lower walls, plasterboard areas or posts for TVs, whiteboards, sockets and conduits.
Polish or chamfer exposed edges to prevent cuts and chips. Mark large clear panels at eye level with bands, film, logos or rails to reduce collisions.
Applications
Consider double or acoustic laminated systems, sealed hinged doors and structural-soffit closure. Mid-height frosting or blinds adds visual privacy.
Visual separation may only need single framed glazing. Half-height walls can screen desks and hide wiring.
Glass preserves daylight in small homes. Plan ventilation, privacy finishes and space-saving doors. Coordinate with window replacement for airflow and daylight.
Partitions reduce cooking fumes while keeping views. Use cleanable glass and effective extraction. Required fire compartments need rated barriers, never ordinary glazing; see kitchen fire requirements.
Acoustic laminates or double glazing with frosting help speech privacy and cleaning. Address ceiling and floor paths; coordinate salon mirror walls.
High ceilings and irregular beams require careful geometry and junctions. Check permitted use, renovation applications and management working hours.
Regulations and administration
Typical glass partitions are lightweight and non-structural. Structural-wall changes, slab openings or increased loads need separate assessment. Even works exempt from prior approval under section 41(3) must meet Buildings Ordinance standards. Consult an Authorized Person where uncertain.
Partitions must preserve exits, escape routes, door movement and fire-door self-closing. The Fire Safety Code requires rated doors to self-close and remain closed.
Partitions may change sprinkler, alarm and smoke-control coverage. Consult relevant professionals or registered fire service installation contractors rather than moving devices yourself. Reassess air supply and return to prevent stuffy rooms.
Tenants should follow lease consent and management applications, working-hour and worker-information requirements. Common-area work needs appropriate co-owner or corporation and management consent and DMC compliance. Start administration alongside measurement.
This public-information summary is for reference. Apply Department and Fire Services requirements and the appointed professionals' advice to each case.
Problem diagnosis
Check ceiling voids, door seals, floor gaps and penetrations. Thicker glazing alone generally cannot fix these paths.
Missing blocks or aged gaskets allow movement. Renew cushioning and adjust fixings.
Clean tracks, replace worn rollers and realign to prevent uneven glass loading.
UV and cleaning chemicals age sealant. Remove and renew it, checking acoustic leakage too.
Poor cleaning, trapped air or damp edges can cause faults. Reapply locally or replace the sheet; consider integral frosting.
Changed supply and return paths need ventilation or air-conditioning adjustments, ideally planned before installation.
Our process
Cleaning and care
Combine checks of door springs, mirror supports and window seals.
Service coverage
Our office is at Room F11, 10/F, How Ming Factory Building, 99 How Ming Street, Kwun Tong, Hong Kong. We serve Hong Kong Island, Kowloon and the New Territories.
Frequently Asked Questions
30 questions about styles, acoustics, materials, regulations, faults, pricing and care.
Frameless, framed, sliding, folding, double-glazed, half-height and hybrid systems. Choose for acoustics, space, mounting needs and removability.
Typical laboratory Rw ranges: 10–15 mm single toughened glass 28–35 dB; acoustic laminated 36–39; standard double systems 40–44; high-specification double systems 45–50 or higher. On-site performance is generally lower.
Indicatively: 25 dB allows normal speech; 30 loud speech; 35 makes loud speech less intelligible; 40 makes it hard to understand; 45 allows shouting; 50 makes shouting faint. Single glazing often cannot deliver confidential meetings alone.
Flanking paths include ceiling voids, floors, door gaps, discontinuous seals, ducts and cables. Complete sealing often improves results more than thicker glass.
For privacy and acoustics, generally yes, with void sealing. Visual divisions may stop at a suspended ceiling at lower cost. Decide before quotation.
Toughened, laminated or acoustic laminated, with applicable ISO 9001 manufacture and BS EN 14179-1 heat-soaking. Barrier-function glazing also needs BS EN 12600:2002 Class 1 testing without breakage.
It rejects toughened panes susceptible to NiS spontaneous breakage before delivery, as addressed in the 2018 structural glass code.
Frosting is uniform and durable but permanent. Film is changeable and economical but may lift or age. Mid-height bands preserve daylight and screen seated views.
Yes, with planned power, controls and qualified electrical connection. Assess higher cost, maintenance and use frequency first.
Sliding doors save clearance but have weaker acoustic sealing. Hinged doors with closers and perimeter and bottom seals usually suit meeting-room privacy better.
Frameless gives minimal lines but demands alignment and complicates replacement. Framed systems tolerate uneven walls, accept seals and blinds and may be reusable.
Glass preserves light and openness. Plasterboard is economical, conceals services, supports mounting and can achieve better acoustics. Hybrid lower solid walls and upper glass combine benefits.
Do not load or drill processed glass. Plan solid sections, plasterboard or posts and conduits for mounting and services.
Typical lightweight partitions are non-structural; structural-wall changes, slab holes or added loads need assessment. Section 41(3) exemptions still require regulatory building standards. Consult an Authorized Person if uncertain.
Keep escape routes and door swings clear and preserve fire-door closure. Reassess sprinkler, detector and smoke-control coverage with qualified professionals.
Supply and return paths change. Plan outlets, return grilles, ventilation or separate conditioning to avoid stuffy new rooms.
Usually lease and management approval applies. Common parts need appropriate co-owner or corporation and management consent and DMC compliance.
Combine an appropriate acoustic system targeting around Rw 40 dB or above, sealed hinged doors, structural-soffit closure and sealed penetrations. Thick glass alone rarely suffices.
Yes, with cleanable glass and sufficient extraction. Required fire compartments must use rated barriers rather than ordinary glass.
Missing cushioning or aged gaskets allow movement. Add or renew blocks and seals and adjust fixings without rigidly over-clamping glass.
Channels and silicone secure and seal glazing. Acoustic designs close ceiling voids and underfloor gaps; details affect performance, appearance and replacement.
Polish or chamfer exposed edges and protect them during handling. Chips can initiate fractures, especially in toughened glass.
Yes, eye-level bands, film, logos or rails help avoid collisions in offices, schools, clinics and busy spaces.
Framed systems are easier to dismantle, but new dimensions limit reuse. Frameless silicone joints risk glass loss on removal. Choose standard, demountable systems if relocation is likely.
Usually in framed systems. Frameless joints need careful cutting with some risk to adjacent panels. Match glass and holes and inspect blocks, seals and fixings.
Walls and corners, floor levels and type, ceiling voids, sockets and switches, HVAC and fire devices, doors and opening direction, lifts and access.
Check lifts, corridors and doors first. Increase panel divisions or use framed site assembly where necessary.
Measure and confirm first, then fabricate and install. Area, divisions and junction work determine time; businesses often choose out-of-hours work.
Area, height, system, glazing, doors, hardware, ceiling and floor closures, removal, repairs and working hours determine cost. Free measurement and design quotations are available.
SK Fung holds MWC(W) 42/2014, window inspection qualifications and CIC-certified technicians. Browse partition photographs and related door, mirror and window projects.
Related pages
Explore office and home glass partitions, acoustic systems, privacy glazing, door seals, safe junctions, fire and consent requirements, installation and maintenance across Hong Kong.
