Hanging things on HDB walls feels daunting the first time, mostly because those walls are hard. Unlike the hollow plasterboard walls you see in films, the walls in most HDB flats and older condos are solid reinforced concrete (RC) or dense brick. A nail simply will not go in, and a wrong move can crack the surface or, worse, hit hidden wiring. The good news is that with the right fixing and a little care, you can hang almost anything securely, and renters have plenty of damage-free options too.
This guide walks total beginners through the whole process, from working out what your wall can hold to putting the fixing in cleanly and safely.
Knowing Your Wall and What It Can Hold
Before anything goes up, work out two things: what the wall is made of, and how heavy your item is.
Tap the wall with your knuckle. A solid, dull sound with no give means concrete or brick, which is the norm in HDB flats. These walls are strong, but they need a hole and a wall plug rather than a bare nail. A wall plug is a small plastic sleeve you push into a drilled hole so the screw has something to grip and expand against.
Next, be honest about weight. A framed photo is light, a mirror or a loaded shelf is not, and a mounted TV is heavy and pulls outward at the top. Heavier items need more fixings, larger plugs and screws, and careful placement. If you are ever unsure whether a fixing will hold a heavy load, do not risk it above a bed, sofa or cot.
- Very light (small frames, hooks): adhesive hooks or a single small plug and screw.
- Medium (mirrors, single shelves, curtain rails): plugs and screws rated for the weight, spread across two or more points.
- Heavy (TVs, large shelving, cabinets): multiple heavy-duty fixings, ideally fitted by someone experienced.
Choosing the Right Fixing
Matching the fixing to the wall and the weight is what keeps things on the wall.
- Plastic wall plugs are the everyday choice for concrete and brick. You drill a hole, tap in the plug, then drive the screw into it.
- Frame or hammer fixings combine a plug and screw in one and suit fixing timber or rails to masonry.
- Heavy-duty anchors are made for serious loads such as TV brackets, and the packaging states the weight each one holds.
- Adhesive hooks and strips stick to the surface and need no drilling, which is ideal for renters and light items, provided the wall is smooth, clean and dry.
Always read the packet. It tells you the drill bit size, the hole depth and the weight the fixing is rated to hold. Buying a mixed pack of plugs and screws from any local hardware shop or DIY store is a cheap way to start.
| What you are hanging | Suggested fixing | Drilling needed? |
|---|---|---|
| Small photo or light hook | Adhesive hook or strip | No |
| Mirror or single shelf | Plastic wall plugs and screws | Yes |
| Curtain rail or timber batten | Frame or hammer fixings | Yes |
| TV bracket or heavy cabinet | Heavy-duty rated anchors | Yes |
| Renter, no holes allowed | Adhesive hooks, over-door hooks | No |
Drilling Into Concrete Safely
If your item needs a plug, you will need to drill, and this is where care matters most.
Behind a concrete wall there may be electrical cables and, near kitchens and bathrooms, water pipes. Hitting either is dangerous and costly, so check first.
- Look for concealed services. Cables tend to run vertically or horizontally from switches, sockets and light fittings, so avoid drilling directly above, below or beside them. A cheap cable and pipe detector from a DIY store, run over the spot first, is money well spent.
- Avoid wet walls. Keep clear of the areas around taps, the water heater, the toilet cistern and shower fittings, where pipes are likely to be concealed.
- Do not drill structural walls unnecessarily, and never hack or chisel one. If you cannot tell whether a wall is load-bearing, leave it alone. Altering structural walls needs HDB approval and a registered contractor.
- Mark the exact spot with a pencil, and use a spirit level so a shelf or row of hooks goes up straight.
Then drill:
- Fit a masonry bit (the type with an arrow-shaped tip), select the hammer setting, and set the drill to spin forward.
- Hold the drill level and square to the wall with both hands.
- Start slowly to make a small pilot dent so the bit does not wander, then build up speed with steady, moderate pressure.
- Drill to the depth the plug needs. Wrapping a strip of tape around the bit as a depth marker keeps you from going too deep.
- Blow or vacuum the dust out of the hole, tap in the plug until it sits flush, then drive in the screw.
Wear safety glasses every time, since concrete throws out sharp grit, and a dust mask helps with the fine RC dust. Hold a vacuum nozzle near the hole to keep the wall clean. Only drill within your town council’s permitted renovation hours, and be considerate to neighbours.
Damage-Free Ways to Hang Things
Not every job needs a drill, and renters in particular will want to keep walls hole-free. If you rent, get your landlord’s permission before drilling anything.
- Adhesive hooks and mounting strips hold light frames, keys and utensils on smooth, dry walls. Follow the weight limit on the packet and press firmly for the stated time.
- Over-door and tension-rod solutions hang towels, bags and light shelving with no fixings at all.
- Freestanding furniture such as leaning shelves and easels displays plants and pictures without touching the wall.
- Picture rails and rail hooks, where fitted, let you reposition art freely.
Bear in mind that Singapore’s humidity can weaken adhesives over time, so avoid trusting sticky hooks with anything valuable or heavy, and check them now and then.
When to Call a Professional
Most light and medium jobs are well within a beginner’s reach. Some are not, and it is sensible to hand those over.
- Heavy TVs and large shelving pull hard on the wall, so if you are not confident the anchors will hold, have an installer fit the bracket.
- Anything near electrical wiring is a job to leave alone. Switch off at the mains if you must work nearby, and call a Licensed Electrical Worker for the wiring itself.
- Concealed pipes and plumbing need a licensed plumber.
- Structural walls or any work needing an HDB permit call for a registered contractor.
Hanging things on HDB walls comes down to three habits: know your wall, choose a fixing rated for the weight, and check for hidden services before you drill. Get those right, start with something light, and you will soon trust your own handiwork on the wall.
Explore more
New to this? Start with the essential DIY tools for every home, then learn how to use a power drill safely and the knack of using wall anchors and plugs correctly. To get things straight and secure, read how to use a spirit level and hang things straight and measuring and marking accurately for DIY, and know when to DIY and when to hire a professional.