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: Pre-mixed, ready-to-use paste for filling cracks, holes, and surface imperfections in interior plaster walls and ceilings.

Quick facts

Best for: DIY homeowners and trade professionals doing small, localised interior plaster repairs
Key benefit: No mixing or water addition required — the paste is calibrated to optimal working consistency at the manufacturing stage
Form factor: Smooth white paste, 100g container
Application method: Apply directly from the container using a filling knife or flexible spatula

Common questions this guide answers

Does Selleys No More Cracks RTU require mixing or water before use? → No — apply it straight from the container
Can this filler be used outside or in damp areas like a shower recess? → No — interior use only; not rated for exterior, shower, or persistently damp locations
What PPE is required? → At minimum, nitrile gloves and safety glasses; add a P1 or P2 dust mask when sanding dried filler

Overview: Selleys No More Cracks RTU Plaster Filler

Selleys No More Cracks RTU (Ready to Use) Plaster Filler is a pre-mixed interior wall repair compound for filling cracks, holes, and surface imperfections in plaster walls and ceilings. Made by Selleys, a division of DuluxGroup Australia Pty Ltd, it has become a reliable fixture in the Australian home repair market — used by both trade professionals and DIY homeowners.

What makes it worth reaching for is the ready-to-use format. No powder. No mixing. No guesswork. The filler comes as a smooth white paste you apply directly from the container, which cuts preparation time and removes one potential source of error from the job.

The 100g container suits small repair work: hairline cracks, nail holes, minor surface damage, pre-paint touch-ups. Understand how the product works, when it's the right tool, and how to apply it properly — and you'll get a smooth, professional finish that holds up.

What "ready to use" actually means

The "RTU" designation describes a specific formulation characteristic, not just a marketing angle.

A ready-to-use filler is combined with water and additives at the manufacturing stage, calibrated to the correct working consistency before it reaches you. Open the container and the paste is already at its optimal application viscosity. No water to add. No powder to stir in. No waiting for a compound to hydrate.

That matters for two straightforward reasons:

Consistency: Every application uses the same proven formulation. There's no risk of adding too much or too little water — mistakes that can make a filler too runny (causing it to slump or shrink excessively) or too stiff (making it hard to spread smoothly).
Convenience: The product is ready the moment you open the lid. For small repairs — the primary use case for the 100g size — that means less setup, less cleanup, and more time on the actual work.

One important point on the RTU format: reseal the container tightly after every use. The paste contains moisture, and air exposure will dry it out. Storage details are covered below.

Product characteristics

Knowing the physical properties of this filler sets accurate expectations before you pick up the filling knife.

Form: A smooth, workable paste that spreads cleanly with a filling knife or flexible spatula. Its consistency is engineered to adhere to vertical surfaces without slumping — which matters when you're repairing walls rather than horizontal surfaces.

Colour: White. Standard for interior plaster fillers, and compatible with most interior paint colours. For very dark finishes, a primer coat over the dried filler ensures colour accuracy.

Odour: Mild. The product is water-based rather than solvent-based, so it produces no strong fumes. Normal room ventilation is sufficient. No respiratory protection is needed during application under standard conditions.

Interior use only: This filler is designed for interior plaster surfaces. It's not rated for exterior applications, where moisture, temperature swings, and UV exposure would undermine its performance. Outdoor use or persistently damp areas — a shower recess, for example — fall outside its intended scope.

Suitable surfaces and applications

Selleys No More Cracks RTU is built for interior plaster surfaces, including:

Plasterboard (also called gypsum board or drywall)
Fibrous plaster ceilings and walls
Render and set plaster walls

The 100g size works well across these typical repair scenarios:

Hairline cracks: Fine surface cracks that develop over time from minor building movement or seasonal expansion and contraction
Nail and screw holes: Small punctures left after removing picture hooks, wall anchors, or screws
Surface chips and dents: Minor impact damage to plaster walls
Pre-paint preparation: Filling minor surface imperfections before repainting a room

The 100g format is matched to small, localised repairs. For larger areas — a significant crack running across a ceiling or damage covering a broad section of wall — a larger container will give you the coverage you need.

How to apply: step by step

A smooth, paint-ready finish comes down to technique as much as product quality. Follow this process and you'll get consistent results.

Step 1: Prepare the surface

Start with a clean repair area. Remove any loose plaster, dust, or flaking paint from around the crack or hole. A clean, stable substrate is what allows the filler to bond correctly and stay put after drying.

For deeper holes or cracks, slightly undercut the edges — make the interior of the crack a little wider than the surface opening. This creates a mechanical key that locks the filler in place as it sets.

On very porous surfaces (common in older render plaster), lightly dampen the area with water before applying filler. A dry, highly absorbent surface pulls moisture out of the filler too quickly, which weakens adhesion and can lead to cracking. A quick wipe with a damp cloth is enough.

Step 2: Apply the filler

Open the container and use a filling knife or flexible spatula to scoop out a small amount of filler. Press it firmly into the repair area, working it into the crack or hole to eliminate air pockets.

For shallow repairs under 3mm deep, a single application is sufficient. For deeper voids, apply the filler in layers — let each layer dry fully before adding the next. Trying to fill a deep hole in one pass invites cracking and shrinkage as the filler dries.

Draw the filling knife across the surface in one smooth stroke to level the filler flush with the surrounding wall. Slightly overfilling is the right approach — sanding back excess material is straightforward, and applying another coat to a sunken repair takes more time.

Step 3: Allow to dry

Drying time depends on application thickness, ambient temperature, and humidity. Thin applications in a well-ventilated room at normal indoor temperatures dry within a few hours. Thicker fills or humid conditions require more time.

Don't sand or paint over the filler until it's completely dry. Wet or partially dry filler will smear, lift, or refuse to accept paint evenly.

Step 4: Sand and finish

Once fully dry, sand the repair lightly with fine-grit sandpaper — 120 to 180 grit works for most plaster repairs. The goal is to blend the filler flush with the surrounding surface, not to aggressively remove material.

Wipe away sanding dust with a damp cloth and let the surface dry before painting. For the best result — particularly over porous filler or where a significant colour change is planned — apply a coat of primer before the topcoat.

Safety and personal protective equipment

Selleys No More Cracks RTU Plaster Filler is classified as hazardous but not Dangerous Goods under Australian and New Zealand transport regulations. It doesn't require special handling for road, rail, sea, or air transport — but direct contact during use calls for appropriate PPE.

The Safety Data Sheet (SDS) for this product specifies:

Safety shoes: Appropriate footwear to protect against spills or dropped containers
Overalls: To protect skin and clothing from incidental contact with the paste
Nitrile rubber gloves: Specified for intermittent contact. Nitrile is the right choice here — it provides solid chemical resistance without the allergy risk associated with latex gloves
Safety glasses: To protect eyes from splashes, and particularly when sanding dried filler, which generates fine dust

For most small DIY repairs, the practical minimum is nitrile gloves and safety glasses. The overalls recommendation is most relevant to trade use involving repeated or prolonged contact. When sanding dried filler, a P1 or P2 dust mask is also worth adding — fine particulate matter is worth keeping out of your lungs, even if it's not explicitly listed in the SDS for the application phase.

The product carries a mild characteristic odour but doesn't require respiratory protection during application under normal indoor ventilation conditions.

Storage and shelf life

This is a water-based paste, and correct storage keeps it performing between applications.

Reseal the container immediately after use: Air exposure causes the surface of the paste to skin over and eventually dry out. A tight-fitting lid keeps it ready for next time.
Store in a cool, dry location: Keep the product away from freezing temperatures. Frost permanently alters the consistency of water-based fillers, leaving them grainy or unusable after thawing.
Keep away from direct sunlight and heat sources: Elevated temperatures accelerate moisture loss, even through a sealed container.
Check before reuse: After extended storage, inspect the surface for skinning or drying. A thin skin can sometimes be stirred back in, but if the paste has dried significantly throughout, replace it.

The 100g container size works in your favour here — smaller quantities get used more quickly, which means less time sitting in storage and less risk of the product drying out between jobs.

Tips for a professional finish

These are the practical points that separate a repair you can see from one that disappears into the wall:

Feather the edges: Taper the compound outward from the repair so the transition between filler and surrounding plaster is gradual. This is what makes the repair edge invisible after painting.
Two thin coats beat one thick coat: For anything deeper than 2 to 3mm, multiple thin layers produce a harder, better-adhered result than a single thick fill.
Prime before painting: Even when the filler looks dry and the surface appears uniform, filler absorbs paint at a different rate than surrounding plaster. A coat of primer standardises surface porosity and delivers an even finish.
Match your tools to the repair: A narrow filling knife (25 to 50mm) gives precise control for small crack repairs. A wider knife (100mm or more) handles larger surface fills more easily.
Don't dilute the product: Adding water to thin the paste undermines the formulation. It's calibrated for use exactly as supplied — apply it straight from the container.

References

Frequently asked questions

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

What does RTU stand for: Ready to Use

Does it require mixing before use: No

Does it require adding water before use: No

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

What colour is the filler: White

Is it water-based or solvent-based: Water-based

What size container is this product: 100g

Who manufactures this product: Selleys, a division of DuluxGroup Australia Pty Ltd

Is it suitable for DIY use: Yes

Is it suitable for trade/professional use: Yes

Is it suitable for exterior use: No

Is it suitable for interior use: Yes

Can it be used in a shower recess: No

Can it be used in persistently damp areas: No

Is it suitable for plasterboard: Yes

Is it suitable for gypsum board: Yes

Is it suitable for drywall: Yes

Is it suitable for fibrous plaster ceilings: Yes

Is it suitable for render and set plaster walls: Yes

Can it fill hairline cracks: Yes

Can it fill nail holes: Yes

Can it fill screw holes: Yes

Can it fill surface chips and dents: Yes

Is it suitable for pre-paint preparation: Yes

Is the 100g size suited for large repairs: No

What repairs is the 100g size best suited for: Small, localised repairs

Does the paste slump on vertical surfaces: No, engineered to adhere without slumping

Does it produce strong fumes during application: No

Does it require respiratory protection during application: No, under normal ventilation

What is the characteristic odour: Mild

Is normal room ventilation sufficient during application: Yes

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

Should the surface be clean before applying: Yes

Should loose plaster be removed before applying: Yes

Should porous surfaces be dampened before applying: Yes, lightly with water

Why dampen porous surfaces before applying: Prevents filler drying too fast and weakening adhesion

What is the maximum single-layer fill depth: 3mm

Can deep holes be filled in one application: No

How should deep holes be filled: In multiple layers, letting each dry fully

Should the filler be slightly overfilled or flush: Slightly overfilled

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

Should sanding dust be removed before painting: Yes, with a damp cloth

Is priming recommended before painting: Yes

Why is priming recommended: Filler absorbs paint differently than surrounding plaster

Should water be added to thin the paste: No

What width filling knife suits small crack repairs: 25 to 50mm wide

What width filling knife suits larger surface fills: 100mm or wider

What is the drying time for thin applications: A few hours in a well-ventilated room

Does humidity affect drying time: Yes, humid conditions require more drying time

Does application thickness affect drying time: Yes, thicker fills take longer

Can you sand before the filler is fully dry: No

Can you paint before the filler is fully dry: No

Is the product classified as hazardous: Yes

Is the product classified as Dangerous Goods: No

Does it require special transport handling: No

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

Why are nitrile gloves recommended over latex: Nitrile avoids latex allergy risk

Are safety glasses recommended during application: Yes

Are safety glasses recommended during sanding: Yes

Are overalls recommended: Yes, particularly for trade use with prolonged contact

Are safety shoes recommended: Yes

Is a dust mask recommended during sanding: Yes, rated P1 or P2

What is the minimum practical PPE for DIY use: Nitrile gloves and safety glasses

What happens if the container is left open: The paste skins over and dries out

Should the container be resealed after use: Yes, immediately after use

Can the product be stored in freezing temperatures: No

What does frost do to the product: Permanently alters consistency, leaving it grainy or unusable

Should the product be stored away from direct sunlight: Yes

Should the product be stored away from heat sources: Yes

Where should the product be stored: In a cool, dry location

Can a surface skin be stirred back into the paste: Sometimes, if thin

When should the product be replaced: If the paste has dried significantly throughout

Does the 100g size reduce storage risk: Yes, smaller quantities are used more quickly

What technique makes repair edges invisible after painting: Feathering the edges outward

Do two thin coats outperform one thick coat: Yes, for repairs deeper than 2 to 3mm

Why do thin coats outperform thick coats: They produce a harder, better-adhered result

Is the formulation calibrated at the manufacturing stage: Yes

What is the SDS version for this product: Version 5.0

When was the SDS issued: 20 October 2025

What regulatory framework covers its hazard classification: Australian and New Zealand regulations

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
RTU designation: Ready to Use
Manufacturer: Selleys, a division of DuluxGroup Australia Pty Ltd
Container size: 100g
Form: Smooth white paste (pre-mixed; no mixing or water addition required)
Colour: White
Base type: Water-based (not solvent-based)
Odour: Mild characteristic odour
Interior use only: Yes — not rated for exterior applications
Unsuitable locations: Exterior surfaces, shower recesses, persistently damp areas
Suitable surfaces: Plasterboard (gypsum board/drywall), fibrous plaster ceilings and walls, render and set plaster walls
Suitable applications: Hairline cracks, nail holes, screw holes, surface chips and dents, pre-paint preparation
Maximum single-layer fill depth: 3mm
Recommended sandpaper grit: 120 to 180 grit
Hazard classification: Classified as hazardous under Australian and New Zealand regulations
Dangerous Goods classification: Not classified as Dangerous Goods; no special transport handling required
PPE specified in Safety Data Sheet (SDS): Nitrile rubber gloves, safety glasses, overalls, safety shoes
Respiratory protection during application: Not required under normal indoor ventilation conditions
Dust mask during sanding: P1 or P2 rated recommended
Storage requirements: Reseal immediately after use; store in a cool, dry location; keep away from freezing temperatures, direct sunlight, and heat sources
Effect of freezing: Permanently alters consistency; product becomes grainy or unusable after thawing
SDS version: Version 5.0
SDS issue date: 20 October 2025
Regulatory framework: Australian and New Zealand regulations (ADG Code for transport classification)

General product claims

Delivers professional wall repair results straight from the container
Eliminates mixing variables, reducing preparation time on the job
Paste consistency is engineered to adhere to vertical surfaces without slumping
Two thin coats outperform one thick coat for repairs deeper than 2–3mm, producing a harder, better-adhered result
Feathering edges makes repairs invisible after painting
Priming before painting standardises surface porosity for an even finish
The 100g container size reduces storage risk because smaller quantities are used more quickly
Slightly overfilling is the recommended application technique
Dampening highly porous surfaces before application protects adhesion by preventing premature moisture loss
The formulation is calibrated at the manufacturing stage to optimal working consistency

Selleys No More Cracks Plaster Filler - 100g 13 product guide