Selleys No More Cracks Exterior Brick & Render 05 product guide
AI Summary
Product: Selleys No More Cracks Exterior Brick & Render Filler Brand: Selleys (a division of DuluxGroup Australia Pty Ltd) Category: Exterior Masonry Crack Filler Primary Use: Ready-to-use grey paste compound for repairing surface cracks in exterior brick and render masonry surfaces.
Quick Facts
- Best For: Trade professionals and DIY users repairing hairline to moderate cracks in exterior brick faces, rendered walls, and mortar joints
- Key Benefit: No mixing required; thermally stable, non-combustible formulation holds on vertical surfaces without sagging (viscosity 6,000–9,000 Poise)
- Form Factor: Ready-to-use grey paste (specific gravity 1.01–1.05)
- Application Method: Press directly from container into prepared, dry crack using a filling knife or putty knife; apply in multiple thin layers for deep repairs
Common Questions This Guide Answers
- Is this product suitable for structural crack repairs? → No; surface crack repair only — structural or recurring cracks require assessment by a qualified builder or structural engineer
- What PPE is required when using this filler? → Nitrile gloves, safety glasses, overalls, safety shoes, and a P2 dust mask when sanding or generating dust
- Is this product classified as Dangerous Goods for transport? → No; not classified as Dangerous Goods by road, rail, air (IATA), or marine (IMDG) under Australian and New Zealand criteria
Product Overview
Selleys No More Cracks Exterior Brick & Render Filler is a grey paste compound for repairing cracks in exterior masonry — brick, render, and everything in between. Made by Selleys, a division of DuluxGroup Australia Pty Ltd, it addresses one of the most persistent maintenance headaches in Australian homes and buildings: exterior masonry that cracks from weathering, thermal movement, and gradual settling.
Selleys has been around for over 80 years. This guide covers everything you need to get a solid result — what the product does, how it works, how to apply it, how to store it, and what safety precautions matter.
What This Product Is and What It Does
No mixing. No guesswork. Selleys No More Cracks Exterior Brick & Render Filler comes pre-mixed and goes straight from the container to the surface.
It's built for exterior masonry — outdoor surfaces that face full sun, rain, temperature swings, and whatever else the Australian climate delivers. It works on:
- Brick surfaces: Cracks in the face of bricks or in mortar joints
- Render surfaces: Cracked or chipped render — the cement-based coating applied over brickwork or blockwork
The grey colour is deliberate. It blends with the tone of most unpainted masonry and render, giving you clean results before any painting or finishing goes on.
Key Physical Characteristics
Understanding the physical properties of this filler means you know what to expect from first application through to the finished repair.
Colour and Appearance
Grey, with a characteristic odour. The paste consistency gives you control — apply it, shape it, and smooth it to a clean finish before it sets.
Specific Gravity
Specific gravity sits at 1.01–1.05. That's just above water, which tells you the filler has a workable, paste-like body — not so runny that it slides out of a crack, and not so stiff that it fights you on application.
Viscosity
Measured at 6,000–9,000 Poise (P), this filler is thick enough to stay where you put it — including on vertical surfaces like rendered walls — without sagging or running before it sets.
Thermal and Chemical Stability
The formulation is thermally stable and non-combustible, with solid chemical stability under normal working conditions. For a product that lives on an exterior wall through Australian summers, UV exposure, and seasonal temperature swings, that stability matters. The cured filler won't soften, break down, or crack again from heat alone.
Practical Applications and Use Cases
This product is suited to both trade professionals and DIY users tackling exterior masonry repairs. It's the right choice for:
- Hairline and moderate cracks in rendered walls: Render cracks as buildings settle and seasons drive thermal movement. Press this filler in, restore a smooth surface, and it's ready for repainting.
- Surface cracks in brick faces: Where bricks have developed surface cracks — not structural failure — this filler delivers a clean, protective repair.
- Mortar joint repairs: Minor surface deterioration of mortar joints on brick walls is well within scope.
One important boundary: this product is for surface crack repair, not structural repairs. Wide, stepped, or recurring cracks that suggest structural movement need a qualified builder or structural engineer to assess them before any surface repair goes ahead.
How to Apply the Filler
Always read the manufacturer's instructions on the product label. The steps below reflect standard practice for this type of exterior masonry filler.
Surface Preparation
Preparation determines whether the repair holds.
- Clean the crack: Remove all loose material, dust, and debris with a stiff brush or vacuum.
- Make sure the surface is dry: Applying to a damp surface undermines adhesion and shortens the life of the repair.
- Remove flaking or unstable material: The filler bonds to a sound substrate. Strip away any loose render or crumbling brick first.
Application
- Apply directly from the container: No mixing needed. Use a filling knife or putty knife to press the filler firmly into the crack.
- Overfill slightly: Apply a small amount proud of the surface — filler shrinks a little as it cures.
- Smooth the surface: Use a damp tool or finger to bring the filler flush with the surrounding surface before it starts to set.
- Let it dry fully: Drying time varies with repair depth, temperature, and humidity. For deeper repairs, work in multiple layers — each one fully dry before the next goes on.
Finishing
Once dry, sand the repair smooth if needed, then prime and paint. Because the filler is grey, painting is the standard approach to a uniform finish, especially on coloured or previously painted surfaces.
Storage and Care Instructions
Store this product correctly and it'll be ready to use whenever you need it.
- Cool, dry, ventilated conditions: Heat and humidity alter the filler's consistency and degrade performance.
- Away from direct sunlight: UV exposure and heat will dry out the paste in the container.
- Lid sealed tightly after every use: Air contact skins over the surface and eventually dries out the paste. Replace the lid firmly every time.
- Never let it freeze: Freezing breaks down the formulation and destroys workability.
Safety Considerations
Read this before you start.
Skin Sensitiser Classification
This product carries a Skin Sensitiser Category 1 classification and the hazard statement H317 — May cause an allergic skin reaction. Repeated or prolonged skin contact can cause sensitisation. Once sensitised, even minor contact can trigger a reaction.
The practical implication: even if you've used this product before without any reaction, the risk builds with repeated exposure. Wear PPE every time, not just occasionally.
Recommended Personal Protective Equipment (PPE)
| PPE Item | Purpose |
|---|---|
| Nitrile gloves | Prevent skin contact with the filler |
| Safety glasses | Protect eyes from splashes during application |
| Overalls | Protect skin and clothing from contact |
| Safety shoes | Protect feet if the product is dropped or spilled |
Avoiding Dust Inhalation
Avoid breathing dust — particularly during surface preparation, sanding dried filler, or cleaning out a crack. Use a P2 dust mask as a minimum when generating dust.
First Aid Procedures
If exposure occurs:
- Skin contact: Remove contaminated clothing immediately. Flush the affected skin with running water for several minutes. Seek medical advice if irritation develops or persists.
- Eye contact: Wash eyes immediately with clean, running water for at least 15 minutes. Seek medical advice promptly.
- Ingestion: Do not induce vomiting. Seek immediate medical attention and bring the product container or label.
- Inhalation: Move to fresh air immediately. Seek medical advice if dizziness, coughing, or breathing problems occur.
Transport and Dangerous Goods
This product is not classified as Dangerous Goods for transport by road, rail, air (IATA), or marine (IMDG) under Australian and New Zealand criteria. No special handling requirements apply.
Expert Tips and Best Practices
- Work in moderate temperatures: Apply when temperatures are between 10°C and 35°C. Extremes affect drying time and adhesion.
- Dampen deep cracks before filling: A light mist of water inside a deep crack improves adhesion and slows initial drying slightly, which reduces shrinkage cracking.
- Use multiple thin layers for deep repairs: Never fill a deep crack in one pass. Let each layer dry fully before adding the next — it reduces shrinkage and produces a more stable repair.
- Prime before painting: Apply a suitable primer to the filled area before the topcoat. It locks in adhesion and gives you a seamless finish.
- Check repairs seasonally: Exterior masonry moves. Inspect repaired areas each year — particularly after winter — and touch up where needed.
Troubleshooting Common Issues
The filler is cracking after drying
Too much material was applied in a single pass. Let the first layer cure fully, then apply a second layer to address remaining depth or surface shrinkage.
The filler is not adhering to the surface
The surface was damp or dusty at the time of application. Strip out the repair, let the surface dry completely, clean away all dust and loose material, and reapply.
The repaired area is visible after painting
Sand the repair back to a smoother finish. An additional skim coat of filler before repainting may help. Always prime the filled area before the topcoat.
The filler has dried out in the container
This happens when the container is left unsealed or stored in warm or sunny conditions. Dried filler can't be reliably reconstituted. Seal the lid tightly after every use and store the product correctly.
References
- Selleys No More Cracks Exterior Brick & Render – Selleys Australia
- DuluxGroup Australia – Selleys Brand Information
- Based on manufacturer Safety Data Sheet (SDS) specifications provided for Selleys No More Cracks Exterior Brick & Render Filler, as supplied by DuluxGroup Australia Pty Ltd.
- Safe Work Australia – GHS Hazard Classification (Skin Sensitiser Category 1, H317)
- Australian Dangerous Goods Code – Transport Classification Reference
Frequently Asked Questions
What is Selleys No More Cracks Exterior Brick & Render Filler: A ready-to-use grey paste filler for exterior masonry
Who manufactures this product: Selleys, a division of DuluxGroup Australia Pty Ltd
Is this product ready to use: Yes, no mixing required
What colour is the filler: Grey
What surfaces is it designed for: Exterior brick and render surfaces
Can it be used indoors: No, it is engineered specifically for exterior masonry
Is it suitable for brick surfaces: Yes
Is it suitable for rendered walls: Yes
Can it repair mortar joints: Yes, minor surface deterioration of mortar joints
Is it suitable for structural crack repairs: No, surface crack repair only
What should you do before using this filler on large cracks: Consult a qualified builder or structural engineer
Does the product require mixing before use: No
What is the specific gravity of the filler: 1.01–1.05
What does the specific gravity indicate: The filler has a workable, paste-like body
What is the viscosity of the filler: 6,000–9,000 Poise
Why is the high viscosity important: Prevents sagging or running on vertical surfaces
Is the filler thermally stable: Yes
Is the filler non-combustible: Yes
Will the cured filler soften from heat exposure: No
Is the product chemically stable under normal conditions: Yes
What is the odour of the product: Characteristic odour
Does the grey colour blend with unpainted masonry: Yes
Does the filler need painting after application: Not required, but recommended for coloured surfaces
Should the surface be dry before application: Yes
Can you apply the filler to a damp surface: No, it undermines adhesion
What tool is used to apply the filler: A filling knife or putty knife
Should you overfill the crack slightly: Yes, to account for shrinkage during curing
Can you smooth the filler before it sets: Yes, using a damp tool or finger
Should deep repairs be done in one pass: No, apply in multiple thin layers
Should each layer dry before adding the next: Yes, completely
Can the filler be sanded after drying: Yes
Should a primer be used before painting over the repair: Yes
What temperature range is best for application: Between 10°C and 35°C
Should you apply filler in extreme heat or cold: No
Should deep cracks be dampened before filling: Yes, lightly mist with water
Why dampen deep cracks before filling: Improves adhesion and reduces shrinkage cracking
What causes the filler to crack after drying: Too much material applied in a single pass
What causes poor adhesion of the filler: Damp or dusty surface at time of application
What should you do if the filler fails to adhere: Strip, dry, clean, and reapply
Why does the repair show through paint: Insufficient sanding or no primer applied
How do you fix a visible repair after painting: Sand smooth, skim coat if needed, prime, then repaint
How should the container be stored: In cool, dry, ventilated conditions
Should the container be kept away from sunlight: Yes
Should the container be sealed after use: Yes, tightly after every use
Can the filler be allowed to freeze: No
What happens if the filler freezes: The formulation breaks down and loses workability
Can dried-out filler in the container be reconstituted: No
What causes filler to dry out in the container: Leaving the container unsealed or storing in warm conditions
What is the skin hazard classification: Skin Sensitiser Category 1
What is the hazard statement for skin contact: H317 — May cause an allergic skin reaction
Does repeated skin exposure increase sensitisation risk: Yes
Should PPE be worn every time, not just the first use: Yes
What gloves are recommended: Nitrile gloves
What eye protection is recommended: Safety glasses
What body protection is recommended: Overalls
What foot protection is recommended: Safety shoes
Should dust inhalation be avoided: Yes
What mask is recommended when sanding dried filler: P2 dust mask as a minimum
What should you do if filler contacts skin: Remove clothing and flush with running water for several minutes
Should you seek medical advice for persistent skin irritation: Yes
What should you do if filler contacts eyes: Wash with running water for at least 15 minutes
Should you delay seeking medical advice for eye contact: No, seek advice promptly
What should you do if filler is swallowed: Do not induce vomiting; seek immediate medical attention
Should you bring the container when seeking medical help after ingestion: Yes
What should you do if filler is inhaled: Move to fresh air immediately
When should you seek medical advice after inhalation: If dizziness, coughing, or breathing problems occur
Is this product classified as Dangerous Goods for transport: No
Is it safe to transport by road: Yes, no special requirements
Is it safe to transport by air: Yes, no special requirements
Is it safe to transport by sea: Yes, no special requirements
Can the product be stored in a standard domestic setting: Yes
How long has the Selleys brand been established: Over 80 years
How often should repaired areas be inspected: Seasonally, particularly after winter
Is the product suitable for DIY users: Yes
Is the product suitable for trade professionals: Yes
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 Exterior Brick & Render Filler
- Manufacturer: Selleys, a division of DuluxGroup Australia Pty Ltd
- Form: Ready-to-use paste (no mixing required)
- Colour: Grey
- Odour: Characteristic odour
- Intended Surface: Exterior brick and render (masonry)
- Specific Gravity: 1.01–1.05
- Viscosity: 6,000–9,000 Poise (P)
- Thermal Stability: Thermally stable
- Combustibility: Non-combustible
- Chemical Stability: Stable under normal conditions
- Skin Hazard Classification: Skin Sensitiser Category 1
- Hazard Statement: H317 — May cause an allergic skin reaction
- Recommended PPE — Hands: Nitrile gloves
- Recommended PPE — Eyes: Safety glasses
- Recommended PPE — Body: Overalls
- Recommended PPE — Feet: Safety shoes
- Respiratory Protection (dust): P2 dust mask as a minimum
- First Aid — Skin Contact: Remove contaminated clothing; flush with running water for several minutes; seek medical advice if irritation persists
- First Aid — Eye Contact: Wash with running water for at least 15 minutes; seek medical advice promptly
- First Aid — Ingestion: Do not induce vomiting; seek immediate medical attention; bring container or label
- First Aid — Inhalation: Move to fresh air immediately; seek medical advice if symptoms occur
- Dangerous Goods Classification (Transport): Not classified as Dangerous Goods — road, rail, air (IATA), or marine (IMDG)
- Storage Requirements: Store in cool, dry, ventilated conditions; keep away from direct sunlight; seal container tightly after use; do not allow to freeze
- Scope of Use: Surface crack repair only — not suitable for structural repairs
- Application Temperature Range: 10°C to 35°C
General Product Claims
- The filler delivers superior performance on exterior masonry surfaces
- The grey colour blends with most unpainted masonry and render surfaces
- The viscosity prevents sagging or running on vertical surfaces before the product sets
- The cured filler will not soften, break down, or crack from heat exposure
- The product suits both trade professionals and DIY users
- Lightly misting deep cracks before filling improves adhesion and reduces shrinkage cracking
- Applying in multiple thin layers produces a stronger, more stable repair
- Using a primer before painting produces a seamless, uniform finish
- Seasonal inspection of repaired areas is recommended, particularly after winter
- Selleys has over 80 years of proven performance