AI Summary

Product: Selleys No More Cracks RTU Plaster Filler Brand: Selleys (a division of DuluxGroup Australia Pty Ltd) Category: Interior Plaster Filler / Wall Repair Compound Primary Use: Ready-mixed compound for repairing cracks, holes, and surface imperfections in interior plaster walls and ceilings — no mixing or measuring required.

Quick Facts

Best For: DIY home maintenance and professional trade interior plaster repairs in Australia and New Zealand
Key Benefit: Pre-mixed formulation eliminates incorrect mix consistency, which is the most common obstacle in DIY plastering
Form Factor: Smooth white paste, 100g container
Application Method: Apply directly from container using a flexible filling knife; no preparation required

Common questions this guide answers

Does Selleys No More Cracks RTU require mixing before use? No — it's pre-mixed to the correct consistency; open the container and apply directly.
Is this product safe to use indoors? Yes — it's classified Hazardous under Australian WHS regulations but is not classified as Dangerous Goods; use in a well-ventilated space and wear nitrile gloves and safety glasses.
How do you get a smooth, professional finish with this filler? Apply slightly proud of the surface, allow full drying, sand with 120–180 grit sandpaper, and apply a primer coat before painting.

Product overview

Selleys No More Cracks RTU Plaster Filler repairs interior walls and ceilings straight from the container — no mixing, no fuss. This ready-mixed compound handles cracks, holes, and surface imperfections in plaster, backed by Selleys' 80+ years in the trade. Manufactured by Selleys, a division of DuluxGroup Australia Pty Ltd, it's used by both DIYers and professional tradespeople across Australia and New Zealand.

The product comes in a 100g container as a white paste with a mild characteristic odour. The "RTU" (Ready To Use) formulation is the whole point — open the container and apply directly to the surface. That's it.

This guide covers everything you need to use this product safely and effectively, from understanding what it does to applying it with confidence and storing it correctly.

Key features and what they mean for you

Ready-to-use formulation

RTU means the filler arrives pre-mixed to exactly the right consistency. No powder to combine with water, no ratios to calculate, no risk of under- or over-mixing. For occasional repairs around the home, this removes one of the most common obstacles in DIY plastering — incorrect mix consistency — before it becomes a problem.

This is especially useful for small, infrequent repairs where mixing a batch from scratch would mean wasted product and inconsistent results. With Selleys No More Cracks RTU, the consistency is right every time.

Paste form factor

Supplied as a smooth, workable paste, this filler spreads cleanly and holds its shape on vertical surfaces without slumping — which means it works just as well on ceilings as on walls. The white colour gives you a neutral, paint-ready base that won't stain or bleed through once fully cured.

Interior plaster application

This product is engineered specifically for interior plaster surfaces. Plaster has its own porosity and surface texture, distinct from timber or drywall, and using a filler matched to that substrate gives you proper adhesion, compatible expansion and contraction behaviour, and a finish that blends with the surrounding wall.

This is not a product for exterior use. Moisture, UV exposure, and temperature extremes require a different specification entirely. For interior plaster, this is the right tool.

Practical applications

Selleys No More Cracks RTU handles a wide range of common interior repair tasks:

Hairline cracks in plaster walls and ceilings from minor structural movement or age
Small holes left by nails, screws, or wall fixings after pictures or shelving come down
Surface chips and dents from impact damage
Cosmetic repairs before repainting a room

The 100g container suits small to medium repairs well. For larger areas — significant cracking across a wide wall section, or holes larger than roughly 50mm in diameter — you'll want a larger quantity or a backing compound applied first.

How to apply

Surface preparation

Good surface preparation is what makes a repair last. Get this right and the rest follows.

Clean the area — Remove all loose plaster, dust, flaking paint, and debris from around the crack or hole. A scraper or stiff brush works well here.
Undercut the edges (for cracks) — Slightly widening the crack with a scraper or utility knife creates a stronger mechanical key for the filler to grip.
Dampen the surface — A light mist of water over the repair area stops dry plaster from drawing moisture out of the filler too quickly, which prevents shrinkage cracking and helps the bond hold.

Application

Because this product is ready to use, application is straightforward:

Open the container and use a flexible filling knife or putty knife to scoop out the amount you need.
Press the filler firmly into the crack or hole, working it in to push out any air pockets.
Draw the knife across the surface to leave the filler sitting slightly proud of the surrounding wall. This accounts for minor shrinkage as it dries.
Allow to dry fully. Drying time varies with repair depth, temperature, and humidity. Shallow repairs in warm, dry conditions can dry within a few hours; deeper fills or humid conditions need longer.
Once dry, sand lightly with 120–180 grit sandpaper until flush with the surrounding surface.
Wipe away dust and apply a primer coat before painting. This is what gives you a clean, uniform finish.

Deep repairs

For holes or cracks deeper than roughly 5–6mm, apply the filler in multiple thin layers rather than one heavy pass. Let each layer dry fully before applying the next. This controls shrinkage and builds a structurally sound repair.

Safety considerations

Hazard classification

Selleys No More Cracks RTU Plaster Filler is classified as Hazardous under Australian workplace health and safety regulations, but it is not classified as Dangerous Goods for transport by road, rail, sea, or air in Australia or New Zealand. That distinction matters: "hazardous" refers to potential health effects under certain exposure conditions, while "Dangerous Goods" refers to transport risk. This product presents no special transport hazard.

The mild characteristic odour isn't a sign of significant chemical risk, but working in a well-ventilated space is always sensible.

Personal protective equipment (PPE)

The manufacturer's Safety Data Sheet specifies the following PPE:

Safety shoes — protection against dropped containers or tools
Overalls — keeps skin and clothing clear of incidental contact
Nitrile rubber gloves — specified for intermittent contact; nitrile resists the compounds in plaster fillers better than latex or vinyl
Safety glasses — guards eyes against splashes or particles, particularly when sanding dried filler

For household repairs, the practical minimum is nitrile gloves and safety glasses, especially during sanding. Sanding dried filler produces fine dust that shouldn't be inhaled. Work in a ventilated space and wear a dust mask during sanding for added protection, even where this isn't explicitly listed in the SDS PPE requirements.

First aid (general guidance)

Avoid prolonged skin contact and wash hands thoroughly after use. If the product contacts eyes, rinse immediately with clean water and seek medical advice if irritation continues. Refer to the full Safety Data Sheet (SDS Reference No: SELGHSEN000431, Version 5.0, issued 20 October 2025) for complete first aid and emergency information.

Storage and shelf life

Keeping the product in good condition

Paste-form fillers respond to their environment. Store this product correctly and it stays ready to use whenever you need it.

Seal the container tightly after every use. Check that no dried filler is caught in the lid seal — that's the most common reason lids don't close properly.
Store in a cool, dry location away from direct sunlight and heat sources. Elevated temperatures speed up drying and can change the paste consistency.
Never freeze the product. Frost damage breaks down the binder system in water-based fillers, which can compromise performance or make the product unusable.
Keep the container upright to stop the paste from settling against the lid.

If a skin or crust forms on the surface after storage, it can often be carefully removed. The product underneath may still be fine if it retains its paste consistency. If the filler has dried throughout or developed an unusual texture, replace it.

Container size

The 100g format is a deliberate choice for occasional small repairs — it limits waste when product sits between uses. For ongoing repair work, buying in this size and replacing as needed is more practical than keeping a larger container open too long.

Troubleshooting common issues

Filler shrinks or cracks after drying

This is the most common issue with plaster fillers, and it usually comes down to one of three things: the application was too thick in a single pass (build up deeper repairs in layers), the surface was too dry at application (dampen the substrate first), or the repair dried too fast (keep it away from direct sunlight and heat sources, since rapid moisture loss causes surface cracking).

Filler does not adhere properly

Poor adhesion is almost always a surface preparation issue. Remove all loose material, dust, and grease before application. A lightly dampened surface also strengthens the mechanical bond.

Finish appears rough after sanding

This usually means the filler was sanded before it was fully dry. Allow more drying time, particularly in humid conditions, before sanding. Using too coarse a sandpaper grit also leaves visible scratches — finish with 180-grit or finer for a smooth, paint-ready surface.

Paint soaks in or looks patchy over the repair

Filler is more porous than the surrounding painted surface and will absorb paint unevenly without a primer coat. Always prime the sanded repair before applying your topcoat. This single step is what separates a clean finish from one that shows the repair.

Tips worth knowing

Feather the edges — Thin the filler out toward the edges of the repair area rather than leaving a hard line. Blending with the surrounding surface after sanding is much easier, and the result looks seamless.
Use a flexible filling knife — A flexible filling knife, not a rigid scraper, lets you follow the wall's contour and leaves a smoother application with less sanding needed.
Mark the opening date on the container — A quick note with a marker tells you exactly how long the product has been open.
Check your paint colour match — Even a well-executed repair can show if the touch-up paint has aged differently from the surrounding wall. In some cases, repainting the entire wall section gives a more consistent result than spot-touching alone.

References

Selleys No More Cracks – Selleys Australia Product Page
Selleys No More Cracks RTU Plaster Filler – Safety Data Sheet (SDS Ref: SELGHSEN000431, Version 5.0, issued 20 October 2025) (Refer to the Selleys website SDS library for the current document)
Safe Work Australia – Hazardous Chemicals and Dangerous Goods Classification
DuluxGroup Australia – Brand and Product Information

Frequently asked questions

What is Selleys No More Cracks RTU Plaster Filler: A ready-mixed interior wall repair compound

What does RTU stand for: Ready To Use

Does it require mixing before use: No, it is pre-mixed

Does it require measuring before use: No measuring required

What form does the product come in: A smooth white paste

What colour is the filler: White

Does it have an odour: Yes, a mild characteristic odour

Is the odour a sign of significant chemical risk: No

What size container does it come in: 100g

Who manufactures this product: Selleys

What company owns Selleys: DuluxGroup Australia Pty Ltd

How many years of performance history does Selleys have: Over 80 years

Is this product suitable for DIY use: Yes

Is this product suitable for professional trade use: Yes

What countries is it sold in: Australia and New Zealand

Is it designed for interior use: Yes

Is it designed for exterior use: No

Why is it not suitable for exterior use: Exterior conditions require a different specification

What surfaces is it designed for: Interior plaster walls and ceilings

Can it be used on timber: No, it is engineered for plaster surfaces

Can it be used on masonry: Not applicable to this product

Can it be used on drywall: Not applicable to this product

Can it repair hairline cracks: Yes

Can it repair nail holes: Yes

Can it repair screw holes: Yes

Can it repair surface chips: Yes

Can it repair dents: Yes

Is it suitable for cosmetic repairs before repainting: Yes

What is the maximum recommended hole size for this product: Approximately 50mm diameter

What should be used for holes larger than 50mm: A backing compound applied first

What is the maximum recommended single-layer application depth: Approximately 5–6mm

How should repairs deeper than 6mm be filled: In multiple thin layers

Must each layer dry before applying the next: Yes, fully

Does the filler shrink slightly when drying: Yes, minor shrinkage occurs

Should the filler be applied slightly proud of the surface: Yes, to account for shrinkage

What sandpaper grit is recommended for finishing: 120–180 grit

Should a primer be applied before painting: Yes

Why must primer be applied before painting: Filler is more porous than surrounding painted surface

What happens if primer is skipped: Paint soaks in unevenly and looks patchy

What tool is recommended for application: A flexible filling knife or putty knife

Why is a flexible filling knife preferred over a rigid scraper: It follows the wall contour for a smoother finish

Should the surface be cleaned before application: Yes

Should loose plaster be removed before application: Yes

Should the surface be dampened before application: Yes, lightly

Why should the surface be dampened: Prevents dry plaster drawing moisture from filler too quickly

Does dampening the surface prevent shrinkage cracking: Yes

Does dampening the surface improve adhesion: Yes

Should cracks be undercut before filling: Yes, slightly

Why should cracks be undercut: Creates a stronger mechanical key for the filler

What causes filler to shrink or crack after drying: Application too thick in a single pass

Does applying filler too thickly cause cracking: Yes

Does a surface that is too dry cause poor adhesion: Yes

Does rapid drying cause surface cracking: Yes

Should the repair be kept away from direct sunlight while drying: Yes

What causes poor adhesion of the filler: Inadequate surface preparation

Is the product classified as hazardous: Yes, under Australian WHS regulations

Is the product classified as Dangerous Goods: No

Does hazardous classification mean it is a transport risk: No

What does the hazardous classification refer to: Potential health effects under certain exposure conditions

Is ventilation recommended during use: Yes

Is ventilation recommended during sanding: Yes

What gloves are specified in the Safety Data Sheet: Nitrile rubber gloves

Why are nitrile gloves specified over latex or vinyl: Nitrile resists the compounds present in plaster fillers

Are safety glasses recommended: Yes

Are overalls recommended: Yes

Are safety shoes recommended: Yes

Should a dust mask be worn during sanding: Yes, recommended

What is the SDS reference number: SELGHSEN000431

What is the SDS version number: Version 5.0

When was the SDS issued: 20 October 2025

What should be done if product contacts eyes: Rinse immediately with clean water

When should medical advice be sought after eye contact: If irritation continues

Should hands be washed after use: Yes, thoroughly

Should prolonged skin contact be avoided: Yes

How should the container be stored after use: Sealed tightly

Where should the product be stored: Cool, dry location away from sunlight and heat

Should the product be frozen: No, never

What does freezing do to the product: Breaks down the binder system

Should the container be stored upright: Yes

Why should the container be stored upright: Prevents paste from settling against the lid

Can a surface crust be removed after storage: Yes, carefully

Is the product underneath a crust still usable: Possibly, if paste consistency is retained

When should the product be replaced: If dried throughout or developed unusual texture

Is the 100g size designed to limit waste: Yes

Should the repair edges be feathered: Yes, thinned toward the edges

Why should edges be feathered: Makes blending with surrounding surface easier after sanding

Is it helpful to mark the opening date on the container: Yes

Does a well-executed repair always match aged surrounding paint: Not necessarily

What can deliver a more consistent result than spot-touching alone: Repainting the entire wall section

Label facts summary

Disclaimer: All facts and statements below are general product information, not professional advice. Consult relevant experts for specific guidance.

Verified label facts

Product Name: Selleys No More Cracks RTU Plaster Filler
Formulation Type: Ready To Use (RTU) — pre-mixed, no mixing or measuring required
Form: Smooth white paste
Colour: White
Odour: Mild characteristic odour
Container Size: 100g
Intended Use: Interior plaster walls and ceilings
Not Suitable For: Exterior use
Manufacturer: Selleys, a division of DuluxGroup Australia Pty Ltd
Markets: Australia and New Zealand
Hazard Classification: Classified as Hazardous under Australian WHS regulations
Dangerous Goods Classification: Not classified as Dangerous Goods for transport by road, rail, sea, or air (Australia and New Zealand)
Recommended PPE (per SDS): Nitrile rubber gloves, safety glasses, overalls, safety shoes
SDS Reference Number: SELGHSEN000431
SDS Version: Version 5.0
SDS Issue Date: 20 October 2025
Maximum recommended single-layer application depth: Approximately 5–6mm
Maximum recommended hole size: Approximately 50mm diameter
Recommended sandpaper grit for finishing: 120–180 grit
Storage: Sealed tightly; cool, dry location away from direct sunlight and heat sources; upright; do not freeze
First Aid — Eye Contact: Rinse immediately with clean water; seek medical advice if irritation continues

General product claims

Delivers professional-grade interior wall repair results
Removes the risk of incorrect mix consistency common in DIY plastering
Suitable for both DIY home maintenance and professional trade applications
Paste holds shape on vertical surfaces without slumping
White colour provides a paint-ready base that will not stain or bleed through once cured
Engineered to provide proper adhesion and compatible expansion/contraction behaviour on plaster substrates
Dampening the surface before application prevents shrinkage cracking and improves bond
Undercutting crack edges creates a stronger mechanical key
Applying filler slightly proud of the surface accounts for minor shrinkage during drying
Applying in multiple thin layers for deep repairs controls shrinkage and produces a structurally sound result
Priming before painting prevents uneven paint absorption over the repair
A flexible filling knife produces a smoother finish than a rigid scraper by following the wall contour
Feathering edges produces a seamless blend with the surrounding surface after sanding
Selleys has over 80 years of proven performance history
The 100g container size is designed to limit waste for occasional small repairs
Repainting an entire wall section may deliver a more consistent result than spot-touching alone where paint has aged

Selleys No More Cracks Plaster Filler - 100g 10 product guide