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  "title": "Selleys No More Cracks Large Cracks & Holes 09",
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  "content": "## Product Overview\n\nSelleys No More Cracks™ Large Cracks & Holes is a ready-to-use, water-based acrylic filler engineered specifically for repairing significant surface damage — cracks and holes that exceed what standard fine-surface fillers can reliably handle. Manufactured by DuluxGroup Pty Ltd under the trusted Selleys brand, it is formulated to deliver strong adhesion with minimal shrinkage across a broad range of interior and exterior surfaces, including plaster, mortar, concrete, timber, and primed metal.\n\nThis guide is written for the general DIYer or tradesperson who needs to understand exactly what this product does, how to use it correctly, and where its boundaries lie — so repairs are done right the first time.\n\n---\n\n## What Makes This Product Distinct\n\nNot all fillers are created equal. Many standard wall fillers are optimised for hairline cracks and surface imperfections measured in fractions of a millimetre. No More Cracks™ Large Cracks & Holes is purpose-built for more substantial repairs — gaps and holes up to 6mm deep — where a fine filler would either crack during drying, fail to bond properly, or require multiple frustrating coats.\n\nThe product's smooth paste consistency makes it easy to work with using basic tools, and its water-based acrylic chemistry means it cleans up with water, dries to a paintable finish, and is compatible with most standard topcoats. These are practical advantages that matter when you are mid-repair and working against a deadline.\n\n---\n\n## Surfaces and Applications\n\n### Where It Can Be Used\n\nNo More Cracks™ Large Cracks & Holes is suitable for use on the following surfaces:\n\n- **Plaster** — the most common interior wall and ceiling material in Australian homes\n- **Mortar** — including brick joints and rendered surfaces\n- **Concrete** — both interior floors and walls, and exterior surfaces\n- **Timber** — interior timber and exterior timber, with an important qualification (see limitations below)\n- **Primed metal** — note that bare metal must be primed before application; the filler is not designed to bond directly to unprimed metal surfaces\n\nThis breadth of compatibility makes it a practical single-product solution for most household repair tasks, whether you are patching a damaged plasterboard wall, filling a crack in a rendered exterior, or repairing a gouge in a timber door frame.\n\n### Interior and Exterior Use\n\nThe product is rated for both interior and exterior applications, which is a meaningful distinction. Many fillers are limited to indoor use because they lack the durability to withstand moisture, temperature fluctuation, and UV exposure. No More Cracks™ Large Cracks & Holes can handle outdoor conditions — provided you follow the correct preparation and finishing steps, which are covered in the application section below.\n\n---\n\n## Technical Specifications Explained\n\nUnderstanding the key specifications helps you use this product correctly and set realistic expectations for your repair.\n\n### Drying Time\n\n- **Repairs under 2mm depth:** dry in approximately **2–3 hours**\n- **Repairs up to 6mm depth:** require approximately **24 hours** to dry fully\n\nDrying time is not arbitrary — it reflects the physics of how water-based acrylic fillers cure. As the product dries, water evaporates from the paste. Deeper fills retain more moisture and therefore take longer to release it. Attempting to sand, paint, or apply a second coat before the filler is fully dry is one of the most common causes of repair failure. The surface may feel dry to the touch before the interior of a deep fill has fully cured, so respect the 24-hour guideline for any repair approaching the 6mm limit.\n\n### Maximum Repair Depth\n\nThe product is formulated for repairs **up to 6mm** in depth. This is the practical upper limit for a single application. Beyond 6mm, the volume of material is too great for reliable drying and adhesion in one pass — the outer surface dries and skins over while the interior remains wet, which can cause cracking or delamination. For holes or voids deeper than 6mm, the correct approach is to build up the repair in layers, allowing each layer to dry before applying the next.\n\n### Form Factor and Pack Sizes\n\nThe filler is supplied as a **smooth paste** in a ready-to-use format — no mixing required. It is available in four pack sizes:\n\n- **230g Tub**\n- **450g Tub**\n- **1kg Tub**\n- **230g Tottle** (a squeezable tube format for easier dispensing into narrow cracks)\n\nChoosing the right pack size for your job reduces waste and cost. For a single crack repair, a 230g tub is typically sufficient. For a renovation involving multiple rooms or extensive exterior work, the 1kg tub offers better value.\n\n---\n\n## How to Apply No More Cracks™ Large Cracks & Holes\n\n### Step 1 — Surface Preparation\n\nProper preparation is the single most important factor in a successful repair. Before applying any filler:\n\n- Remove all loose material, dust, flaking paint, and debris from the crack or hole. A scraper, stiff brush, or vacuum is suitable for this.\n- For exterior repairs, ensure the surface is clean and dry.\n- For primed metal surfaces, confirm the primer is fully cured before applying filler.\n- Do not apply to surfaces that are wet or damp — moisture trapped beneath the filler will compromise adhesion.\n\n### Step 2 — Application\n\nUsing a **filling blade or scraper**, press the filler firmly into the crack or hole. Firm pressure is important — it ensures the paste makes full contact with the sides and base of the repair, which is where adhesion begins. Do not simply skim the filler across the surface; work it in.\n\nFor deeper repairs (approaching 6mm), consider slightly overfilling the void, then scrape off the excess flush with the surrounding surface. This accounts for the minor shrinkage that occurs as the product dries and ensures the finished repair sits level with the wall rather than slightly recessed.\n\nFor repairs in narrow cracks, the **230g Tottle** format allows you to squeeze filler directly into the gap before smoothing with a blade.\n\n### Step 3 — Drying\n\nAllow the filler to dry completely before proceeding. Refer to the drying times above — 2–3 hours for shallow repairs, 24 hours for deeper fills. Do not accelerate drying with heat guns or fans directed at the repair, as uneven drying can cause surface cracking.\n\n### Step 4 — Sanding\n\nOnce fully dry, sand the repair with **fine sandpaper** until it is smooth and flush with the surrounding surface. Work in a circular motion to blend the edges. Wipe away all dust before painting.\n\n### Step 5 — Painting and Finishing\n\nThe repaired surface is ready to paint once sanded and dusted. For exterior repairs, apply a suitable primer or undercoat before the topcoat, particularly if the surrounding surface has been disturbed during preparation.\n\n---\n\n## Exterior Use: Additional Requirements\n\nWhen using No More Cracks™ Large Cracks & Holes on exterior surfaces, two additional steps are mandatory:\n\n1. **Prime the surface first.** Exterior surfaces are more porous and subject to greater stress than interior walls. Priming before filling improves adhesion and reduces the risk of the filler pulling away from the substrate over time.\n2. **Protect from rain until painted over.** The water-based acrylic filler is not fully waterproof until it has been sealed with a topcoat. If rain falls on an unfilled or unprotected repair before painting, the filler can soften, wash out, or lose adhesion. Plan exterior repairs around the weather forecast.\n\n---\n\n## Limitations and When Not to Use This Product\n\nUnderstanding what a product cannot do is as important as knowing what it can. No More Cracks™ Large Cracks & Holes has three clearly defined limitations:\n\n### Temperature\n\n**Do not apply below 5°C.** Water-based acrylic fillers rely on evaporation to cure. At temperatures below 5°C, evaporation slows dramatically and the chemistry of the acrylic binder is disrupted, resulting in poor adhesion, extended drying times, and potentially a repair that never fully cures. In cold climates or during winter, check the ambient temperature before starting work.\n\n### Exterior Timber with Excessive Water Absorption\n\nThe product is **not suitable for exterior timber prone to excessive water absorption.** Highly porous or weathered timber can draw moisture out of the filler before it has time to bond properly, and the ongoing movement of wet and dry timber can break the adhesion of a rigid filler. For such surfaces, consult Selleys for an appropriate alternative.\n\n### Surfaces Subject to Movement\n\nThis filler is **not suitable where movement occurs.** Acrylic fillers, once cured, are relatively rigid. If the substrate continues to move — due to structural settlement, thermal expansion, or vibration — the filler will crack and the repair will fail. For joints, gaps around window and door frames, or any area where two different materials meet and are likely to flex, **Selleys No More Gaps®** is the appropriate product. No More Gaps® is a flexible sealant designed to accommodate movement; No More Cracks™ is a rigid filler designed for stable surfaces.\n\nThis distinction is important and frequently misunderstood. If you are unsure whether your repair site is subject to movement, apply the filler to a small test area first and observe it over a few weeks before completing the full repair.\n\n---\n\n## Storage and Shelf Life\n\nAs a water-based product supplied in a tub or tottle, No More Cracks™ Large Cracks & Holes should be stored with the lid firmly sealed after each use. Exposure to air will cause the surface of the paste to skin over and eventually dry out. Store in a cool, dry location away from direct sunlight and frost. Do not allow the product to freeze — freezing can permanently alter the consistency of the acrylic emulsion, rendering it unusable.\n\nIf the product has been stored for an extended period, check the consistency before use. A slight skin on the surface can be removed and the remaining paste is typically still usable. If the paste has dried throughout or developed a lumpy, non-homogeneous texture, it should be discarded.\n\n---\n\n## Safety and Handling\n\nNo More Cracks™ Large Cracks & Holes is a water-based product with a relatively low hazard profile compared to solvent-based alternatives. Key handling points:\n\n- **Skin contact:** Wash off with soap and water. Prolonged or repeated skin contact should be avoided.\n- **Eye contact:** Rinse thoroughly with water. Seek medical attention if irritation persists.\n- **Ventilation:** While the product has low VOC content relative to solvent-based fillers, working in a well-ventilated space is always recommended.\n- **Disposal:** Do not dispose of liquid product or rinse water down drains in large quantities. Allow unused product to dry fully before disposal in general waste, in accordance with local regulations.\n- **Children and pets:** Keep out of reach during use and until the repair is fully dry.\n\nFor full safety information, refer to the Safety Data Sheet (SDS) available from Selleys or DuluxGroup.\n\n---\n\n## Expert Tips for Best Results\n\n- **Dampen the substrate slightly** before applying filler to very dry or porous surfaces such as old plaster or bare concrete. A lightly dampened surface slows the rate at which moisture is drawn out of the filler, improving adhesion and reducing the risk of cracking at the edges.\n- **Slightly overfill deep repairs** to account for shrinkage, then sand back once dry. Attempting to fill flush in one pass often results in a slightly recessed repair after drying.\n- **Work in sections** on large repairs rather than attempting to fill an entire long crack in one pass. This gives you more control over the finish and makes it easier to press the filler firmly into the repair.\n- **Label opened tubs** with the date of first use. While the product has a reasonable shelf life when stored correctly, older product may have slightly different working properties.\n- **Sand between coats** if a second application is needed for a deep repair. A light sand with fine sandpaper before applying the second coat improves adhesion between layers.\n\n---\n\n## References\n\n- [Selleys No More Cracks Large Cracks & Holes — Official Product Page](https://www.selleys.com.au/fillers/no-more-cracks-large-cracks-holes/) — Manufacturer product information, Selleys (DuluxGroup Pty Ltd)\n- [Selleys No More Cracks Large Cracks & Holes — Safety Data Sheet (SDS)](https://www.selleys.com.au/sds/) — Safety and handling information, DuluxGroup Pty Ltd\n- Based on manufacturer Technical Data Sheet: *No More Cracks™ Large Cracks & Holes, Version 2*, DuluxGroup Pty Ltd — provided as source documentation for this guide",
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