Learning how to do wall plastering properly starts long before fresh plaster touches the surface. A smooth, durable wall depends on checking the substrate, removing unstable material, preparing the background correctly, choosing a compatible plaster, controlling the mixture, applying it at the right thickness, and allowing it to set before final finishing. If any of these stages are rushed, the wall may initially look smooth but later develop cracks, uneven patches, poor adhesion, or visible defects after painting.
For Singapore homes, the process also depends on what lies beneath the existing finish. A concrete wall, brick or block surface, plasterboard partition, and previously plastered wall do not necessarily require the same treatment. Moreover, moisture, old paint, hollow plaster, and structural movement must be investigated before cosmetic plastering begins.
British Gypsum’s current installation guidance demonstrates this principle clearly: its finishing-plaster system requires the plaster to be matched to the background and applied in controlled coats rather than simply spread at any thickness. Its MultiFinish system, for example, uses two finishing coats with a combined thickness of about 2 mm.
Therefore, successful plastering a wall is less about applying as much material as possible and more about building the correct wall system.
This guide explains seven practical wall plastering steps, when cement or finishing plaster may be appropriate, the difference between wall plaster vs wall putty, and what Singapore homeowners should check before plaster repair or repainting.
Quick Answer: How Do You Plaster a Wall?
The basic process can be summarised in seven stages:
- Inspect the wall and identify defects.
- Remove loose paint, plaster, dust, and contamination.
- Repair cracks and prepare the substrate.
- Apply the correct bonding treatment where required.
- Mix and apply the plaster evenly.
- Level, flatten, and smooth the surface.
- Allow it to dry properly before priming and painting.
However, these steps describe the workflow rather than a universal product specification. A thin finishing plaster, for example, should not be used to rebuild a deeply damaged masonry surface. Likewise, a cement-based base coat and a gypsum skim coat perform different jobs.
The condition of the wall should determine the material and thickness.
What Is Wall Plastering?
Before discussing the process, it helps to understand what is wall plastering.
Wall plastering is the application of a suitable plaster material over a prepared wall surface to create a more even, stable, and finish-ready layer.
Depending on the condition of the wall, plastering may be used to:
- Level rough masonry
- Repair damaged plaster
- Cover shallow irregularities
- Create a smooth paint-ready surface
- Finish plasterboard systems
- Restore selected damaged areas
- Improve the appearance of an uneven wall
However, plastering is not the same as painting, waterproofing, or structural crack repair.
For example, if water is entering through an external wall, applying fresh plaster over the damp patch does not solve the leak. Similarly, if a crack is caused by continuing structural movement, covering it with plaster may only hide it temporarily.
Consequently, the first question should not be:
“Which plaster should we apply?”
Instead, ask:
“Why is this wall damaged or uneven?”
That diagnosis determines everything that follows.
Why Proper Wall Preparation Matters
Plaster depends on the condition of the surface beneath it.
If the existing layer is loose, dusty, oily, glossy, damp, or unstable, new plaster can lose adhesion even when the plaster itself is high quality.
USG’s plaster-bonding guidance, for example, specifies that bonding products are intended for structurally sound interior surfaces and may be needed when plaster is applied to backgrounds such as concrete, drywall, gypsum plaster, block, or similar materials.
Therefore, the wall should be treated as a system:
substrate → preparation → bonding → plaster → finishing → primer → paint
Skipping one layer can weaken everything above it.
Step 1: Inspect the Wall Before Plastering
The first of the seven wall plastering steps is inspection.
Do not begin by scraping random areas or mixing plaster. First, determine what type of wall you are dealing with and what problem needs to be corrected.
Identify the Wall Surface
The substrate may be:
- Concrete
- Brick
- Concrete block
- Existing plaster
- Gypsum board or drywall
- Previously painted masonry
Each background absorbs moisture differently and provides a different level of adhesion.
For example, British Gypsum specifies different plaster systems for different levels of background suction. Its HardWall system can be used on backgrounds such as common brick and blocks, whereas its BondingCoat system covers other low- to medium-suction surfaces.
Therefore, simply saying “use wall plaster” is not technically specific enough.
Check the Existing Wall for Damage
Look for:
- Hairline cracks
- Wide cracks
- Hollow plaster
- Loose paint
- Powdery surfaces
- Damp stains
- Bubbling
- Mould
- Watermarks
- Deep holes
- Previous patching
- Uneven wall levels
A simple visual check is useful, but tapping selected areas can also reveal hollow or detached plaster.
However, significant cracking should not automatically be treated as a cosmetic plaster defect.
HDB notes that some cracks at joints between block walls and reinforced-concrete elements can result from differential movement between materials. HDB recommends suitable treatment for hairline cracks but advises engaging a contractor for wider cracks.
Therefore, recurring or wider cracks deserve diagnosis before plastering.
Step 2: Remove Loose Material and Clean the Surface
Once the wall has been assessed, remove anything that prevents the new material from bonding properly.
This may include:
- Loose paint
- Flaking plaster
- Dust
- Weak filler
- Chalky coatings
- Dirt
- Grease
- Unstable previous repairs
The objective is not to hack away every existing finish unnecessarily. Instead, remove material that is no longer securely attached.
Why Plastering Over Loose Paint Fails
Imagine applying high-quality plaster over paint that is already separating from the wall.
The plaster may bond perfectly to the paint.
However, the paint itself is not securely bonded to the substrate.
As a result, the entire new layer can detach together with the old coating.
Therefore, surface preparation must reach a stable background.
What About Glossy Paint?
A glossy or very smooth coating may also provide poor mechanical grip.
Depending on the selected system, the surface may require sanding, mechanical preparation, or a manufacturer-approved bonding agent.
USG specifically identifies plaster bonding agents for difficult interior surfaces where additional adhesion is required.
Consequently, a professional contractor should choose preparation according to the substrate rather than relying on one method for every wall.
Step 3: Repair Cracks, Holes, and Moisture Problems
Before plastering a wall, deeper defects need to be handled.
Fresh finishing plaster should not become a substitute for appropriate repair material.
Repair Small Holes and Local Defects
Small screw holes, shallow dents, and isolated damaged areas can often be filled locally.
However, deeper patches may require a base repair before the final skim.
For example:
Shallow surface defect → filler or skim repair
Deep missing plaster → suitable base material → finishing layer
Trying to fill a deep cavity with a very thin finishing plaster can produce shrinkage, cracking, or poor drying.
Investigate Cracks Before Covering Them
A stable hairline crack may require straightforward repair.
However, ask more questions when the crack:
- Keeps returning
- Is becoming wider
- Extends across several building elements
- Appears with water staining
- Causes pieces of plaster to detach
- Is associated with significant movement
HDB’s wall-maintenance guidance similarly distinguishes hairline cracks from wider cracks that should receive contractor attention.
Therefore, plastering should follow diagnosis rather than conceal it.
Fix Moisture First
This is particularly important in Singapore’s humid environment.
A damp patch may result from:
- Plumbing leakage
- External rain penetration
- Failed waterproofing
- Air-conditioning drainage
- Condensation
- Bathroom moisture
Plaster should not be applied simply to hide these symptoms.
First, identify and repair the water source. Next, remove damaged material where necessary and allow the substrate to reach an appropriate condition before replastering.
British Gypsum even provides separate plaster guidance for specific walls following flooding or damp-proof treatment, demonstrating why moisture-affected surfaces require different consideration from an ordinary dry wall.
Step 4: Prepare and Prime or Bond the Wall
Once the substrate is stable and clean, the next step is controlling adhesion and suction.
This stage is often overlooked.
However, it can make the difference between plaster that stays attached and plaster that develops problems later.
What Is Wall Suction?
A porous wall can absorb water from fresh plaster.
If it absorbs moisture too quickly, the plaster may become difficult to work and may not develop the intended finish.
On the other hand, a very smooth or low-absorption surface can provide too little grip.
Therefore, different backgrounds may require different preparation methods.
High-Suction Surfaces
Some porous bricks or blocks can pull moisture quickly.
British Gypsum advises controlling suction appropriately when applying its plaster systems and provides primers for very high-suction backgrounds.
Smooth Concrete or Low-Suction Surfaces
Smooth concrete may require a bonding treatment.
USG states that its plaster bonder is used to bond new plaster to suitable structurally sound surfaces and specifically identifies monolithic concrete among applications requiring the bonding product.
Therefore, do not assume that simply wetting every wall is correct.
The preparation should follow the requirements of the selected plaster system.
Step 5: Mix and Apply the Wall Plaster
Now the wall is ready for the main plaster application.
However, consistency matters.
Too much water can weaken or change the plaster’s behaviour. Meanwhile, an overly dry mixture can become difficult to spread and level.
Therefore, follow the material manufacturer’s stated mixing ratio rather than estimating by eye.
Use Clean Equipment
The bucket, water, and mixing tools should be clean.
Old setting plaster left inside a bucket can interfere with the new mix and reduce working time.
Moreover, plaster should generally be added to the specified quantity of clean water according to the manufacturer’s process.
For example, British Gypsum’s current MultiFinish instructions specify gradually adding plaster to clean water, followed by controlled mixing.
However, that specific ratio applies to that product—not to every plaster sold in Singapore.
Therefore, always follow the product used on the actual project.
Apply the First Coat Evenly
The plaster is normally spread using a plastering trowel.
Apply enough material to build a consistent layer without creating large ridges or thick isolated patches.
For a finishing plaster, the layer may be comparatively thin.
British Gypsum’s MultiFinish system, for example, uses an initial coat followed by a second coat to achieve a total finished thickness of approximately 2 mm.
However, a backing plaster can be much thicker.
Its HardWall instructions, for comparison, use an approximately 11 mm base coat before application of a separate finish coat.
This difference demonstrates why wall plaster cement, base plaster, and skim plaster should not all be treated as identical materials.
Step 6: Level, Flatten, and Smooth the Surface
Plastering does not end once the wall has been covered.
The surface now needs to be progressively flattened and refined as the material begins to firm.
This stage requires timing.
If you work the plaster too early, it may move excessively. However, waiting too long can make it difficult to correct ridges and trowel marks.
Flatten the Surface
Use the appropriate trowel or straightening tool to remove obvious high points.
Next, check:
- Corners
- Wall edges
- Junctions
- Low spots
- Trowel lines
- Changes in thickness
The objective is a consistent plane rather than a wall that merely feels smooth in isolated areas.
Apply the Second Finishing Coat Where Required
Some plaster systems use two thin finishing passes.
British Gypsum’s guidance, for example, applies the second MultiFinish coat shortly after the first before progressively closing and trowelling the surface.
This second application helps achieve a consistent final surface.
However, plastering methods vary by material. Therefore, this should not be copied blindly to a cement render or another proprietary product.
Trowel Progressively
As the plaster firms, the installer progressively trowels the surface.
The goal is to remove:
- Lines
- Small hollows
- Raised edges
- Surface inconsistencies
Finally, the wall should reach an even finish suitable for the intended decoration.
Nevertheless, overworking plaster can also create problems. Excessive water or repeated polishing can affect the final surface.
Therefore, the installer should follow the correct finishing window.
Step 7: Let the Plaster Dry Before Priming and Painting
The final step is patience.
Fresh plaster should not immediately receive its finishing paint simply because the surface feels hard.
The material still needs to dry appropriately.
Drying time depends on:
- Plaster type
- Thickness
- Substrate
- Ventilation
- Room humidity
- Temperature
- Previous moisture problems
Therefore, avoid using one universal rule such as “paint after exactly 24 hours.”
A thin skim coat may dry significantly faster than a deep plaster repair.
How Can You Tell When Plaster Is Ready?
A properly drying wall should gradually become more uniform in appearance.
Before painting, the surface should be:
- Dry
- Stable
- Free from damp patches
- Free from loose dust
- Smooth
- Properly prepared for the selected primer
Next, use a compatible primer or sealer before applying finishing coats.
This step matters because new plaster can absorb paint differently from previously painted surfaces.
Consequently, correct priming helps create more even colour and adhesion.
Wall Plastering Steps at a Glance
| Step | Main Task | Why It Matters |
|---|---|---|
| 1 | Inspect the wall | Identifies substrate, cracks, moisture, and damage |
| 2 | Remove loose material | Creates a stable surface |
| 3 | Repair defects | Prevents plaster from hiding unresolved problems |
| 4 | Bond or prepare | Improves adhesion and controls suction |
| 5 | Apply plaster | Builds the required wall layer |
| 6 | Level and smooth | Produces the final even surface |
| 7 | Dry, prime, and paint | Protects the finish and supports paint performance |
This sequence may appear straightforward. However, professional results depend heavily on judgement at each stage.
Wall Plaster Cement: When Is Cement-Based Plaster Used?
The related phrase wall plaster cement generally refers to a cement-based plaster or cement-sand render used to create or repair a stronger base over masonry.
Cementitious plaster can be useful when:
- The wall is rough masonry
- Brick joints need levelling
- Deeper correction is required
- Existing base plaster has substantially failed
- A harder mineral base is appropriate
However, cement plaster does not automatically produce the extremely smooth finish expected from an interior painted wall.
Therefore, the complete system may look like:
Masonry → cement-based base plaster → fine skim/finish → primer → paint
rather than expecting the base plaster itself to provide the final decorative finish.
Cement Plaster Is Not Automatic Waterproofing
This point deserves emphasis.
A cement-based wall can still absorb moisture.
Therefore, applying wall plaster cement over a leaking surface does not automatically waterproof the wall.
If moisture is entering from plumbing, an exterior wall, or a wet area, the source still requires proper repair.
Wall Plaster vs Wall Putty: What’s the Difference?
The search wall plaster vs wall putty often appears because both materials can make a wall look smoother.
However, they serve different purposes.
Wall Plaster
Plaster can:
- Build thickness
- Correct larger uneven areas
- Repair missing wall material
- Create a new base
- Level masonry
Depending on the system, plaster thickness may range from a thin finish to a much deeper backing coat.
Wall Putty
Wall putty is generally used as a finer surface-preparation material.
It may help:
- Fill very small imperfections
- Improve surface uniformity
- Prepare walls before paint
- Reduce minor pinholes
Therefore, putty is usually not intended to rebuild a severely damaged or deeply uneven wall.
Simple Comparison
| Factor | Wall Plaster | Wall Putty |
|---|---|---|
| Main purpose | Levelling and wall building/repair | Fine surface preparation |
| Typical thickness | Thin to relatively substantial | Generally thin |
| Deep damage | More suitable with correct plaster | Not normally suitable |
| Masonry levelling | Yes, with suitable system | No |
| Before painting | Often forms the base | May refine the final surface |
| Structural repair | No | No |
Therefore, the correct choice depends on the depth and nature of the defect.
Plastering a Wall vs Skim Coating
These terms are also frequently confused.
A full plastering job may rebuild or substantially level the wall.
A skim coat, meanwhile, usually creates a thin finishing layer over an otherwise stable surface.
For example:
Wall A
The wall is fundamentally sound but has minor waviness and old patch marks.
Possible solution: skim coating.
Wall B
Large sections of plaster have detached and brickwork is exposed.
Possible solution: deeper base plaster repair followed by finishing.
Consequently, applying a skim coat over major damage may save time initially but fail to address the actual condition.
British Gypsum’s MultiFinish specification reinforces this distinction: it is a finishing skim plaster with a specified approximately 2 mm application rather than a deep wall-rebuilding material.
How to Plaster a Previously Painted Wall
Previously painted walls require particular attention.
First, determine whether the paint is sound.
If it is flaking, bubbling, chalky, or poorly attached, unstable areas should be removed.
Next, determine whether the remaining surface provides suitable adhesion for the chosen plaster.
Depending on the plaster system, preparation may involve:
- Sanding
- Cleaning
- Mechanical keying
- Suitable bonding agent
USG’s bonding guidance demonstrates that new plaster may require a dedicated bond to certain existing substrates rather than simply being spread over them.
Therefore, plastering directly over glossy paint without checking compatibility can create an unnecessary failure point.
How to Plaster a Concrete Wall
Concrete can be dense and relatively smooth.
As a result, plaster may not automatically grip every concrete surface effectively.
The correct process may involve:
- Inspecting the concrete.
- Removing contamination and loose coatings.
- Repairing cracks or defects.
- Applying an approved bonding treatment.
- Applying the appropriate base or finish plaster.
- Levelling and finishing.
- Allowing drying before decoration.
Again, USG specifically identifies monolithic concrete as a background where its plaster-bonding system is used.
Therefore, surface adhesion deserves as much attention as plaster mixing.
How to Plaster Brick or Block Walls
Brick and blockwork are usually much more uneven than a previously finished interior wall.
Consequently, they may need a thicker backing system before final smoothing.
British Gypsum’s two-coat system for medium- to high-suction backgrounds, for example, uses an 11 mm backing layer followed by a 2 mm finish coat and lists common bricks and blocks among suitable backgrounds.
The exact products used in Singapore may differ. However, the construction principle remains useful:
rough masonry requires base levelling before fine finishing.
Do not try to make an irregular brick wall perfectly flat using only a very thin skim product.
Can You Plaster Over Cracks?
Sometimes, but only after understanding the crack.
A stable minor crack can be repaired and then refinished.
However, simply covering an active crack with a broad plaster coat does not stop movement beneath the surface.
HDB explains that differential movement between block walls and reinforced-concrete components can lead to cracks over time.
Therefore, recurring cracks may require a repair system specifically designed to accommodate the problem.
In addition, severe cracking can require assessment beyond ordinary painting or plastering work.
Common Wall Plastering Mistakes
Skipping Surface Preparation
Applying plaster over dust or weak paint reduces the strength of the entire system.
Therefore, preparation should never be treated as optional.
Using Finish Plaster for Deep Repairs
Fine plaster is not designed to fill every depth.
Instead, rebuild the base correctly and finish afterward.
Ignoring Moisture
Plastering over an active damp patch can result in staining, blistering, softening, or detachment later.
Therefore, solve the water problem first.
Mixing by Guesswork
Too much or too little water changes workability and may affect performance.
Follow the product instructions.
Mixing Too Much at Once
Plaster begins setting according to its formulation.
Consequently, a large batch can become difficult to use before the installer finishes applying it.
Applying Uneven Thickness
Very thick isolated areas and thin spots can dry differently and make levelling difficult.
Instead, apply controlled coats.
Over-Trowelling
Working the plaster excessively can damage the surface quality.
Timing matters.
Painting Too Soon
Fresh plaster may still contain significant moisture even when the surface appears firm.
Therefore, allow sufficient drying before primer and paint.
Wall Plastering in Singapore’s Humid Climate
Singapore’s humidity does not mean plastering cannot be done effectively.
However, moisture management and drying conditions deserve greater attention.
For example, a room with poor ventilation may require more drying time than a well-ventilated space.
Furthermore, contractors should distinguish between:
normal atmospheric humidity
and
active moisture inside the wall.
The second issue is more serious.
Signs of possible wall moisture include:
- Recurrent bubbling
- Dark patches
- Mould
- Soft plaster
- White deposits
- Persistent musty smell
Therefore, repeatedly replastering the same damp area without diagnosing the source is unlikely to deliver a durable finish.
HDB Wall Plastering: What Should Homeowners Know?
Homeowners should consider HDB renovation requirements before broader alteration works.
HDB states that flat owners are responsible for ensuring renovation work follows current guidelines and that regulated renovation work must be carried out appropriately.
This matters because ordinary surface repair is different from:
- Wall hacking
- Demolition
- Structural alteration
- Major changes to wall finishes
- Work involving household shelters
In particular, household shelters have special restrictions because their strengthened walls, ceiling, floor, and door serve a civil-defence purpose.
Therefore, homeowners should not treat every HDB wall as an ordinary plastering surface.
When in doubt, check the current HDB guidelines before work begins.
Should You DIY Wall Plastering?
Small cosmetic patching may be manageable for an experienced DIY homeowner.
However, achieving a flat, consistent plaster finish across an entire room is considerably more difficult than many tutorials make it appear.
The challenge includes:
- Maintaining mixture consistency
- Working within setting time
- Controlling thickness
- Keeping corners straight
- Avoiding trowel marks
- Judging when to flatten
- Achieving an even plane
- Matching repaired areas to surrounding walls
Moreover, incorrect repair can create additional work before painting.
Therefore, professional plastering makes more sense when:
- A large area is affected
- The wall is substantially uneven
- Existing plaster is hollow
- Moisture has caused damage
- Cracks repeatedly return
- Multiple walls need skim coating
- A high-quality final paint finish is expected
What Should a Professional Plastering Quote Include?
A useful quotation should describe the actual work rather than simply saying “wall plastering.”
Ask whether it includes:
- Surface inspection
- Removal of loose material
- Crack repair
- Hole filling
- Substrate preparation
- Bonding treatment
- Base plaster where required
- Skim or finishing plaster
- Sanding
- Primer
- Painting
- Furniture and floor protection
- Cleanup
Moreover, clarify whether moisture or structural repairs are outside the painter’s scope.
This prevents a basic cosmetic quotation from being mistaken for a complete wall-repair solution.
How Friendly Painting Singapore Handles Wall Preparation
Friendly Painting Singapore publishes wall crack repair and plastering as part of its broader painting and surface-preparation services. Its service information also includes surface preparation, furniture and floor protection, masking, painting, and final cleaning.
Therefore, a homeowner can request an assessment when walls show:
- Cracks
- Small holes
- Uneven previous repairs
- Damaged plaster
- Flaking areas
- Surfaces that need smoothing before repainting
However, the correct treatment should still be determined by actual wall condition.
For example, a shallow imperfection may need local filling and skim work, whereas a badly detached area may require deeper plaster removal and rebuilding.
Likewise, active leakage should be corrected before decorative plaster and paint are applied.
When Should You Call Friendly Painting Singapore?
Consider requesting a wall assessment when:
- Repainting keeps revealing the same defects.
- Old patches remain visible through paint.
- Sections of the wall feel uneven.
- Hairline cracks need repair before repainting.
- Existing plaster is damaged.
- A previously repaired wall does not match surrounding areas.
- You want a smoother wall before applying a premium paint finish.
The objective should be to prepare the wall correctly before the decorative coats begin.
That is especially important for stronger lighting, darker colours, and higher-sheen finishes because these can make wall irregularities more noticeable.
What Makes a Wall Truly Paint-Ready?
A smooth-looking wall is not necessarily ready for paint.
Before priming, check that the surface is:
- Fully stable
- Appropriately dry
- Even
- Free of loose dust
- Properly repaired
- Free from active moisture
- Suitable for the chosen primer
Moreover, inspect the wall under actual room lighting.
Side lighting can expose:
- Trowel marks
- Raised repairs
- Low areas
- Sanding scratches
- Joint lines
Therefore, final inspection should happen before the finishing paint is applied.
Final Thoughts
Understanding how to do wall plastering properly means understanding the wall before concentrating on the plaster.
First, inspect the surface and identify cracks, dampness, hollow material, and existing coatings. Next, remove unstable layers and repair deeper defects. Afterward, prepare the substrate with the appropriate bonding or suction-control method.
Only then should plaster be mixed and applied.
Furthermore, the plaster must match its purpose. A thick masonry base, a thin finishing skim, and wall plaster cement are not interchangeable. Similarly, wall plaster vs wall putty is not simply a choice between two competing products: plaster handles larger correction and wall building, whereas putty generally performs finer surface preparation.
Once the plaster has been applied, levelling and trowelling need to happen within the correct working window. Finally, allow the wall to dry appropriately before priming and painting.
For Singapore homeowners, HDB requirements and moisture conditions should also be considered before significant wall work begins.
Friendly Painting Singapore provides wall crack repair, plastering, surface preparation, and painting support for homes and other properties in Singapore.
A properly prepared wall may take more effort at the beginning. However, it creates a much stronger foundation for the final paint finish.
Frequently Asked Questions
1. How to do wall plastering step by step?
Start by inspecting the wall, removing unstable material, repairing defects, preparing or bonding the substrate, applying suitable plaster, levelling and smoothing it, and finally allowing it to dry before priming and painting.
2. What is wall plastering?
Wall plastering is the process of applying a suitable plaster layer to create a level, stable, and finish-ready wall surface. Depending on the condition, it may involve a substantial backing layer or only a thin finishing skim.
3. What are the main wall plastering steps?
The main wall plastering steps are assessment, cleaning, defect repair, substrate preparation, plaster application, levelling, and final drying/decoration.
4. What is the difference between wall plaster and wall putty?
Plaster can build thickness and correct deeper unevenness, whereas wall putty is generally used for smaller surface imperfections and final preparation before painting. Therefore, putty should not normally replace proper plaster on severely damaged walls.
5. Can wall plaster cement be used indoors?
Yes. Cement-based plaster can be appropriate for interior masonry, especially where brick, block, or deeper wall correction requires a stronger base. However, it may require a finer finishing layer before painting.
6. Can I plaster directly over painted walls?
Not automatically. Loose or chalky paint should be removed, while sound but smooth surfaces may require preparation or a compatible bonding treatment. USG specifically provides bonding systems for plaster application over selected structurally sound interior backgrounds.
7. How thick should finishing plaster be?
Thickness depends on the specific product. For example, British Gypsum specifies approximately 2 mm total thickness for its MultiFinish skim system. Other backing or cement-based systems can be much thicker, so always follow the manufacturer specification.
8. Can plaster fix every wall crack?
No. Minor stable cracks may be repaired before finishing, but wider or recurring cracks can indicate movement or another underlying problem. HDB recommends contractor attention for wider wall cracks.
9. How long should plaster dry before painting?
There is no universal drying period. It depends on plaster type, thickness, substrate, ventilation, humidity, and previous moisture exposure. Therefore, follow the product requirements and confirm that the wall is properly dry before priming.
10. Does Friendly Painting Singapore provide wall plastering?
Yes. Friendly Painting Singapore lists wall crack repair and plastering among its services, together with surface preparation and painting work. The required scope should be assessed according to the actual wall condition.