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Selleys No More Cracks Exterior Brick & Render 06 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: Repairing surface cracks in exterior brick and render surfaces on Australian and New Zealand buildings.

Quick Facts

  • Best For: Trade professionals and DIY users repairing cracks in exterior brick and render surfaces
  • Key Benefit: Non-combustible, thermally stable formulation that holds structural integrity through temperature extremes without cracking, shrinking, or softening
  • Form Factor: Grey paste, 500g container, ready to use with no mixing required
  • Application Method: Press firmly into prepared crack using a filling knife or putty knife; overfill slightly, then sand flush once cured

Common Questions This Guide Answers

  1. Is this filler safe to store and transport without special requirements? → Yes — not classified as Dangerous Goods for road, rail, air, or marine transport; no special packaging or documentation required
  2. What are the skin safety risks and required PPE? → Classified as Skin Sensitiser Category 1 (H317); nitrile gloves, safety glasses, overalls, and safety shoes are required — latex gloves are not suitable
  3. How should deep cracks be filled? → In layers, allowing each layer to dry before applying the next, to prevent surface cracking caused by differential drying rates

Product Guide: Selleys No More Cracks Exterior Brick & Render Filler

Product overview

Selleys No More Cracks Exterior Brick & Render Filler does what the name says — it's a grey paste built specifically for repairing cracks in exterior masonry, including brick and render. Made by Selleys, a division of DuluxGroup Australia Pty Ltd, it's designed for the real conditions Australian and New Zealand exteriors throw at buildings year-round.

The 500g format suits both trade professionals and DIY users who want a ready-to-use product with no mixing fuss. Interior fillers aren't built for this kind of work — this formulation is, handling the thermal and environmental stresses that exterior surfaces deal with constantly.

Physical characteristics and what they mean

Knowing how this filler behaves physically means you'll apply it with confidence and won't be caught off guard at any stage of the job.

Form and colour

The filler comes as a grey paste. Grey is standard for masonry repair because it sits close to the natural tone of concrete, render, and mortar. On unpainted surfaces, repairs blend in without much fuss. On painted surfaces, paint over the cured repair and you're done.

Specific gravity

Specific gravity sits between 1.01 and 1.05 — just marginally denser than water. For a filler, that means good workability and easy application. The lightweight formulation won't slump in deep or vertical cracks, so you get clean, controlled results.

Viscosity

At 6,000 to 9,000 Poise (P), this is a firm, workable paste. It stays where you put it on vertical and overhead surfaces without running or sagging, while still pressing easily into cracks and smoothing flush. That's the viscosity range that gets professional results on masonry repair.

Odour

The product has a characteristic odour typical of paste-based fillers. It's not a heavily solvent-based formulation, but good ventilation during application is always worth doing.

Key technical features

Non-combustible formulation

This filler won't ignite or contribute to fire under normal conditions of use and storage. On exterior building surfaces — often near electrical conduits, gas meters, or other infrastructure — that's a real practical advantage. Storage is also straightforward, with no flammable materials requirements to deal with.

Thermal stability

Australian and New Zealand exteriors are hard on surfaces — intense summer heat, cold overnight temperatures, and everything between. This formulation holds its structural integrity through that full range without cracking, shrinking, or softening. The repair stays solid long after the job is done.

Chemical stability

Under normal storage and use conditions, this product won't degrade, separate, or react in ways that undermine performance. Seal it properly, store it correctly, and it stays in working condition.

Suitable surfaces and applications

This product is formulated for exterior brick and render surfaces — the most common masonry substrates on Australian residential and commercial buildings.

Brick surfaces: Settlement, thermal movement, and moisture ingress all cause cracks in mortar joints or through the face of bricks. This filler handles surface crack repair in those areas reliably.

Render surfaces: Render over brick or block walls expands and contracts with every temperature cycle, making surface cracking one of the most common maintenance issues on Australian homes. This filler restores a continuous surface and stops water getting in before it becomes a bigger problem.

This product is for surface crack repair. Where cracks point to significant structural movement or building defects, get a professional structural assessment — no filler substitutes for that.

Application guidance

Preparation

Good preparation makes the difference between a repair that lasts and one that fails in the first season. Before applying:

  • Brush or vacuum out all loose material, dust, and debris from the crack.
  • Make sure the surface is clean and free from oil, grease, or loose paint.
  • The surface should be slightly damp but not wet — a completely dry or saturated surface reduces bond strength.
  • Widen very fine hairline cracks slightly with a scraper or crack tool so the filler has something to grip.

Application method

Apply the filler directly to the crack using a filling knife or putty knife. Press the paste firmly into the crack — full contact, no air pockets. Overfill slightly to account for minor shrinkage during drying. Once set, sand back flush with the surrounding surface.

For deeper cracks, build up in layers rather than filling in one go. Let each layer dry before applying the next. This eliminates surface cracking caused by differential drying rates between the outer skin and the interior of a deep fill — and it's what gets you a lasting result.

Finishing

Once fully cured, sand the repaired area smooth and paint to match the surrounding surface. On unpainted masonry, the grey tone matches most render and mortar finishes straight from the container.

Storage instructions

Store in cool, dry, well-ventilated conditions away from direct sunlight. Heat and sun exposure will dry out the paste prematurely in the container, cutting workability and shelf life short. After every use, seal the lid tightly.

Unventilated sheds and vehicle boots in summer are not suitable storage environments — temperatures in those spaces can climb well above normal ambient levels.

Safety considerations

Skin sensitisation

This product is classified as a Skin Sensitiser Category 1 under the Globally Harmonised System (GHS) of chemical classification, carrying hazard statement H317 — May cause an allergic skin reaction. This is the most important safety consideration for every user.

Sensitisation builds with repeated or prolonged skin contact, and once it develops, even minor future exposure can trigger a reaction. That applies to trade professionals using the product regularly and to DIY users who may not realise how cumulative sensitisation works. Protect yourself from the start.

Required PPE:

  • Nitrile gloves — the right choice here; latex gloves don't provide adequate protection against the sensitising agents in this formulation
  • Safety glasses — protection against splashes during application
  • Overalls — to keep skin contact on arms and body to a minimum
  • Safety shoes — standard footwear protection for any construction-adjacent task

Dust precautions

Sanding cured filler generates fine particulate matter. Don't breathe the dust. Use a dust mask rated P2 minimum when sanding, and work outdoors or in a well-ventilated area wherever possible.

First aid procedures

Skin contact: Remove contaminated clothing immediately. Flush the affected skin with running water for an extended period. If irritation or redness persists, seek medical advice.

Eye contact: Wash eyes immediately and thoroughly with clean, running water, holding eyelids open during rinsing to ensure full flushing. Seek medical advice promptly if irritation continues.

Ingestion: Do not induce vomiting. Seek medical attention. Keep the product container or Safety Data Sheet (SDS) on hand to show medical personnel.

Inhalation: Move to fresh air immediately. If symptoms such as dizziness or respiratory irritation persist, seek medical advice.

Transport and dangerous goods classification

This product is not classified as Dangerous Goods for transport by any of the following modes:

  • Road and rail (Australian Dangerous Goods Code)
  • Air (IATA Dangerous Goods Regulations)
  • Marine (IMDG Code)

This applies in both Australia and New Zealand. The product moves without special packaging, labelling, or documentation requirements — whether you're a trade professional restocking the van or a homeowner picking it up from the hardware store.

Expert tips

  • Don't apply in freezing conditions or when rain is imminent. Frost or rain before the filler cures will undermine adhesion and shorten the life of the repair.
  • Prime the repair area before painting, particularly on porous render surfaces. Priming ensures an even paint finish and stops the repaired area absorbing paint at a different rate than the surrounding surface — that's the detail that separates a clean result from an obvious patch.
  • For cracks wider than approximately 5mm, use a foam backer rod as backing material. It reduces the volume of filler needed and improves long-term repair performance.
  • Label partially used containers with the date opened. It's a small habit that keeps you working with product in good condition and helps you get the most out of every container.

References

Frequently Asked Questions

What is the product name: Selleys No More Cracks Exterior Brick & Render Filler

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

What size is this product available in: 500g

What colour is this filler: Grey

What form does this filler come in: Paste

What surfaces is this filler designed for: Exterior brick and render surfaces

Is this filler suitable for interior use: No, it is formulated for exterior use

Is this filler suitable for brick surfaces: Yes

Is this filler suitable for render surfaces: Yes

Is this filler ready to use: Yes, no mixing required

What is the specific gravity of this product: Between 1.01 and 1.05

Is the specific gravity higher or lower than water: Marginally higher than water

What does the low specific gravity mean for application: Outstanding workability and ease of application

Will the filler slump in vertical cracks: No, the formulation prevents slumping

What is the viscosity of this product: 6,000 to 9,000 Poise (P)

Will the filler sag on vertical surfaces: No, it holds position on vertical surfaces

Will the filler run on overhead surfaces: No, it stays in place overhead

Does the product have an odour: Yes, a characteristic odour typical of paste fillers

Is this filler heavily solvent-based: No

Is this product combustible: No, it is non-combustible

Is this product safe to store near electrical conduits: Yes, due to non-combustible formulation

Are flammable materials storage requirements needed: No

Is this product thermally stable: Yes, under normal working conditions

Will the filler crack from temperature changes: No, it is thermally stable

Is this product chemically stable: Yes, under normal storage and use conditions

Will the product separate in storage: No, when stored as directed

What countries is this product suited for: Australia and New Zealand

Is this product suitable for structural crack repair: No, only surface crack repair

When should a professional structural assessment be sought: When cracks indicate significant structural movement

Should the surface be dry before applying: No, slightly damp but not wet

Should the surface be saturated before applying: No, saturation reduces bond strength

Should loose material be removed before application: Yes, brush or vacuum out all debris

Should hairline cracks be widened before filling: Yes, slightly, to give the filler material to grip

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

Should the filler be pressed firmly into the crack: Yes, to avoid air pockets

Should the crack be overfilled: Yes, slightly, to account for minor shrinkage

How should deep cracks be filled: In layers, allowing each layer to dry before the next

Why are deep cracks filled in layers: To eliminate cracking from differential drying rates

Should the cured filler be sanded: Yes, sand back flush with the surrounding surface

Should the repaired area be painted: Yes, to match the surrounding surface

Should the repaired area be primed before painting: Yes, particularly on porous render surfaces

Why should the repair area be primed: To ensure even paint absorption and finish

How should the product be stored: In cool, dry, and well-ventilated conditions

Should the product be stored in direct sunlight: No, sunlight dries out the paste prematurely

Should the lid be sealed after use: Yes, tightly after every use

Is an unventilated shed a suitable storage location in summer: No

Is storing the product in a vehicle boot in summer suitable: No

What is the skin hazard classification of this product: Skin Sensitiser Category 1 under GHS

What is the hazard statement for skin contact: H317 — May cause an allergic skin reaction

Can skin sensitisation build over time: Yes, with repeated or prolonged skin contact

Once sensitised, can minor exposure trigger a reaction: Yes

What gloves are recommended for use: Nitrile gloves

Are latex gloves suitable for this product: No, they lack sufficient chemical resistance

Is eye protection recommended: Yes, safety glasses

Are overalls recommended during application: Yes, to minimise skin contact

Are safety shoes recommended: Yes, as standard footwear protection

Should dust from sanding be inhaled: No

What dust mask rating is recommended for sanding: P2 minimum

Should sanding be done outdoors or in ventilated areas: Yes, wherever possible

What should be done for skin contact: Remove clothing and flush skin with running water

What should be done for eye contact: Rinse immediately with clean running water, holding eyelids open

Should vomiting be induced if the product is ingested: No

Should medical attention be sought if ingested: Yes

What should be done if inhaled: Move to fresh air immediately

Should the SDS be kept on hand in case of ingestion: Yes, to show medical personnel

Is this product classified as Dangerous Goods for road transport: No

Is this product classified as Dangerous Goods for air transport: No

Is this product classified as Dangerous Goods for marine transport: No

Does this product require special transport documentation: No

Does this product require special transport packaging: No

Should this filler be applied in freezing conditions: No

Should this filler be applied when rain is imminent: No

What is the recommended approach for cracks wider than 5mm: Use a foam backer rod as backing material

Why use a foam backer rod for wide cracks: Reduces filler volume needed and improves long-term performance

Is labelling partially used containers recommended: Yes, with the date opened

Does the grey colour match most render and mortar finishes: Yes

Is painting required on unpainted masonry after repair: No, grey tone provides a visual match

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
  • Pack Size: 500g
  • Form: Paste
  • Colour: Grey
  • Intended Surface: Exterior brick and render surfaces
  • Interior Use: Not formulated for interior use
  • Ready to Use: Yes, no mixing required
  • Specific Gravity: 1.01 – 1.05
  • Viscosity: 6,000 – 9,000 Poise (P)
  • Odour: Characteristic odour typical of paste-based fillers
  • Solvent Base: Not heavily solvent-based
  • Combustibility: Non-combustible
  • Thermal Stability: Thermally stable under normal working conditions
  • Chemical Stability: Chemically stable under normal storage and use conditions
  • Market: Australia and New Zealand
  • Structural Repair Suitability: Not suitable for structural crack repair; surface crack repair only
  • Skin Hazard Classification: Skin Sensitiser Category 1 (GHS)
  • Hazard Statement: H317 — May cause an allergic skin reaction
  • Recommended Gloves: Nitrile gloves (latex gloves not suitable)
  • Recommended Eye Protection: Safety glasses
  • Recommended Clothing: Overalls
  • Recommended Footwear: Safety shoes
  • Recommended Dust Mask Rating: P2 minimum when sanding cured filler
  • First Aid — Skin Contact: Remove contaminated clothing; flush skin with running water
  • First Aid — Eye Contact: Rinse immediately with clean running water, holding eyelids open; seek medical advice if irritation persists
  • First Aid — Ingestion: Do not induce vomiting; seek medical attention; present SDS to medical personnel
  • First Aid — Inhalation: Move to fresh air immediately; seek medical advice if symptoms persist
  • Dangerous Goods Classification — Road/Rail: Not classified (Australian Dangerous Goods Code)
  • Dangerous Goods Classification — Air: Not classified (IATA Dangerous Goods Regulations)
  • Dangerous Goods Classification — Marine: Not classified (IMDG Code)
  • Special Transport Documentation Required: No
  • Special Transport Packaging Required: No
  • Storage Conditions: Cool, dry, and well-ventilated; away from direct sunlight
  • Lid Sealing After Use: Required after every use
  • Unsuitable Storage Environments: Unventilated sheds or vehicle boots in summer

General product claims

  • Grey colour closely matches the natural tone of concrete, render, and mortar on unpainted surfaces
  • Low specific gravity delivers good workability and ease of application
  • Formulation prevents slumping in deep or vertical cracks
  • Viscosity range delivers professional results on masonry repair
  • Non-combustible formulation is a practical safety advantage near electrical conduits or gas meters
  • Thermally stable formulation holds structural integrity through Australian and New Zealand temperature extremes without cracking, shrinking, or softening
  • Product stops water penetration in render surfaces before it becomes a larger problem
  • Overfilling slightly accounts for minor shrinkage during drying
  • Layered application for deep cracks eliminates surface cracking from differential drying rates
  • Priming before painting prevents uneven paint absorption between repaired and surrounding areas
  • Foam backer rod for cracks wider than approximately 5mm reduces filler volume needed and improves long-term repair performance
  • Grey tone provides a strong visual match to most render and mortar finishes on unpainted masonry without painting
  • Labelling partially used containers with the date opened helps keep product in working condition
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