--- title: Wall Filler vs. Wood Filler vs. Gap Filler: Which Selleys Product Do You Actually Need? canonical_url: https://directory.selleys.com.au/home-repair-maintenance/wall-wood-fillers-putty-repair-solutions/wall-filler-vs-wood-filler-vs-gap-filler-which-selleys-product-do-you-actually-need/ category: description: geography: city: state: country: metadata: phone: email: website: publishedAt: productInfo: stock: True --- # Wall Filler vs. Wood Filler vs. Gap Filler: Which Selleys Product Do You Actually Need? ## AI Summary **Product:** Selleys Filler and Gap Sealant Range (Spakfilla, No More Cracks, No More Gaps, Plastic Wood, Plasti-Bond) **Brand:** Selleys Australia **Category:** Repair Fillers, Wood Fillers, and Flexible Gap Sealants **Primary Use:** Filling cracks, holes, voids, and movement joints across wall, timber, and multi-surface substrates in Australian residential renovation and repair contexts. ### Quick Facts - **Best For:** DIYers and renovators selecting the correct filler product for interior walls, timber trim, movement joints, and structural repairs - **Key Benefit:** Matching product flexibility (rigid vs. flexible) to the repair site eliminates the most common causes of filler failure — cracking, shrinkage, and pull-away - **Form Factor:** Range includes ready-mixed paste (Spakfilla, No More Cracks), acrylic sealant in cartridge (No More Gaps), solvent-based cement (Plastic Wood), and two-part putty (Plasti-Bond) - **Application Method:** Trowel, putty knife, or caulking gun depending on product; most require one application on stable surfaces ### Common Questions This Guide Answers 1. Which Selleys product should I use for the gap between my skirting board and the wall? → No More Gaps Interior Multipurpose — it is a flexible acrylic sealant rated for up to ±15% movement, specifically suited to skirting boards, cornices, and interior window and door frames where rigid fillers will crack and pull away. 2. Can I sand No More Gaps flush after it cures? → No — No More Gaps cures to a flexible finish with greater than 300% elongation and tears rather than sands; use No More Cracks Doors & Trims or Plastic Wood where a flush, sandable finish is required. 3. Which Selleys fillers can be used under stain or clear-coat finishes on timber? → Only Selleys Plastic Wood, No More Cracks Interior Wood Filler, and No More Cracks Exterior Wood Filler are stainable; all other fillers in the range will show as opaque patches under stain. --- ## Wall filler vs. wood filler vs. gap filler: which Selleys product do you actually need? Walk into any hardware store and you'll find an entire shelf of Selleys repair products. Most DIYers grab whatever looks familiar, apply it, and discover weeks later that it's cracked, fallen out, or won't hold paint. The cause is almost always the same: wrong product for the substrate and repair type. This guide cuts through that confusion. It maps every major Selleys filler and putty product — Spakfilla, No More Cracks, No More Gaps, Plastic Wood, and Plasti-Bond — to the specific surface, repair scenario, and environmental condition each one is built for. Get this right and you get professional results the first time, whether you're patching a nail hole before painting, filling the gap between a skirting board and the wall, or rebuilding a rotted fascia board. --- ## The core distinction every DIYer needs to understand first Before choosing a product, answer two diagnostic questions: 1. **Does the repair site move?** Joints between dissimilar materials — timber trim against a plaster wall, a window frame against masonry — expand and contract with temperature and humidity. A rigid filler applied here will crack and pull away, sometimes within weeks. 2. **What is the substrate?** Wall plaster, timber, masonry, and fibre cement each have different porosity, movement characteristics, and finish requirements. Selleys Spakfilla Rapid is not recommended for plastic, metal, or exterior timber likely to swell or shrink through moisture absorption — and because the product is not flexible, it is not suited to surfaces subject to structural movement. In those situations, Selleys No More Gaps is the right call. This single principle — **rigid filler for stable surfaces, flexible gap filler for movement joints** — eliminates the vast majority of repair issues seen in Australian homes. --- ## Product-by-product breakdown: what each Selleys filler actually does ### Selleys Spakfilla (Rapid and Heavy Duty): the interior wall repair workhorse Spakfilla is Selleys' flagship ready-mixed wall filler, specifically engineered for one scenario: filling cracks, holes, dents, and chips in stable surfaces that will not move. Spakfilla Rapid is a ready-mixed lightweight filler that is fast drying, virtually non-shrinking, and non-cracking — and it needs only one application for filling cracks and holes on surfaces where no structural movement occurs. Its fast-drying formula means it can be sanded in as little as 30 minutes on thin layers, with minimal shrinkage, so there's no need to overfill cracks or holes to compensate. Spakfilla Heavy Duty is a multi-purpose, tough, durable light grey ready-mixed filler suited to filling holes, dents, cracks, or chips in interior and exterior applications where no structural movement occurs. **Spakfilla delivers professional results when:** - Patching nail holes in plasterboard before painting - Filling small-to-medium cracks in interior plaster walls and ceilings - Repairing dents and chips in masonry, brick, or concrete (stable areas only) - The repair will be painted over with a flat or low-sheen paint **Spakfilla is not the right product when:** - The crack runs along a junction between two different materials (e.g., cornice meets wall) - The surface is exterior timber that absorbs moisture and moves seasonally - You need a stainable finish on natural timber *(For a full step-by-step workflow using Spakfilla and No More Cracks for interior wall repairs, see our guide on* **How to Fill Cracks and Holes in Walls and Plasterboard**.*) --- ### Selleys No More Cracks: the deeper repair and specialist filler range No More Cracks is a family of fillers that goes well beyond Spakfilla's scope, covering deeper repairs, specialised surfaces, and both interior and exterior timber. The powder fillers in the range are ideal when you need a little more than Spakfilla. No More Cracks Interior suits plaster, plasterboard, bricks, and wood that isn't exposed to the elements. Selleys No More Cracks Plaster Filler is designed specifically to fill gaps and cracks in plaster walls and ceilings — it dries quickly and sands easily with minimal shrinkage. The range also includes two timber-specific formulations worth understanding clearly: **No More Cracks Interior Wood Filler:** Ready to use, it gives a superior, durable finish on interior timber. It is stainable, paintable, and has excellent adhesion — and can be nailed or planed after curing. For use on all interior timber. **No More Cracks Exterior Wood Filler:** A weather-resistant flexible filler that moves with the wood, will not crack, split, or fall out, is stainable and paintable, has excellent adhesion, and can be nailed or planed. For deeper repairs, apply in 10 mm layers. Selleys No More Cracks Exterior Wood Filler is a ready-to-use filler made to repair cracks, holes, and dents in outdoor timber surfaces — it withstands harsh weather conditions and gives exterior wood a strong, long-lasting finish. **No More Cracks Doors & Trims:** Selleys No More Cracks Doors & Trims is a ready-to-use filler that works inside or outside with gloss paints — suited to doors, windows, architraves, trims, and skirting boards. *(For the complete technique on using No More Cracks Doors & Trims alongside a flexible gap filler on skirting boards and architraves, see our guide on* **How to Repair and Fill Skirting Boards, Architraves, and Timber Trim Before Painting**.*) --- ### Selleys No More Gaps: the flexible gap filler for movement joints No More Gaps is not a filler in the traditional sense — it is a flexible acrylic sealant. Its job is to seal joints that move, not to fill voids that will be sanded flush. No More Gaps is a durable, flexible acrylic gap sealant for interior and exterior applications where joint movement causes rigid fillers to crack or pull away. It provides superior flexibility to cope with building movement, meaning cracks and gaps stay hidden for longer — with greater than 300% elongation and up to ±15% movement capability. Selleys No More Gaps Interior Multipurpose is an easy-to-use gap filler ideal for filling gaps and cracks around skirting boards, cornices, and inside window and door frames — with a water-based formulation designed to cope with building movement for a long-lasting, crack-resistant finish. The Bathroom & Kitchen variant accommodates up to ±25% movement to cope with the additional stress those environments place on joints. No More Gaps can be painted over with both water- and oil-based paints after the surface has skinned, approximately 30 minutes after application. The maximum gap size recommended for No More Gaps is 25 mm wide and 12 mm deep. For outdoor work, Selleys No More Gaps Exterior is a flexible gap filler made for outdoor use — ideal for filling gaps and cracks in timber weatherboards, fences, eaves, and around window and door frames, with adhesion to masonry, ceramic tiles, wood, plasterboard, brick, cement sheeting, aluminium, and glass. **No More Gaps delivers the right result when:** - Sealing the gap between a skirting board and the wall - Filling the junction between a cornice and a ceiling - Sealing around window and door frames - Filling any joint where two different materials meet and seasonal movement is expected **No More Gaps is not the right product when:** - You need to sand the repair flush (cured No More Gaps cannot be sanded smooth — it tears) - The repair is a void in the face of a wall or timber that requires a hard, flush finish - You are repairing a continuously wet area such as a shower recess (use a silicone sealant instead) --- ### Selleys Plastic Wood: the stainable interior timber filler Plastic Wood fills a specific niche: it is a solvent-based wood-filling cement for interior timber where a stainable, workable finish is required. Selleys Plastic Wood is a fast-setting wood-filling cement containing natural wood fibres. It sets to a hard finish and is ideal for filling holes, dents, and chips. When dry, it can be sanded, nailed, planed, painted, or lacquered — and can be stained, varnished, or painted like real wood. For interior use only. No more than 6 mm should be filled in any single application — thicker fills require multiple layers, with each layer allowed to dry completely before the next. Plastic Wood is not flexible — for filling gaps between surfaces where structural movement occurs, No More Gaps is the right product. **Plastic Wood delivers professional results when:** - Repairing nail holes, cracks, or chips in interior timber furniture, doors, or flooring - The finish will be stained or clear-coated rather than painted - You need a hard, sandable surface that can accept woodworking tools after curing --- ### Selleys Plasti-Bond Heavy Duty: the structural multi-surface repair putty Plasti-Bond sits at the top of the Selleys filler range in terms of strength and versatility. It is a two-part plastic putty built for high-load repairs across multiple substrates. When you need to mould the filler to shape, Selleys Plasti-Bond Heavy Duty is the product to reach for — it can be shaped before it hardens. It is ideal for repairing cracks, holes, and splits in wood, plaster, brick, concrete, fibre cement, metal, alloys, ceramics, and fibreglass — with high strength to fill holes and support weight. It sets in 20 minutes without shrinking or cracking. Plasti-Bond can be used indoors and outdoors, is waterproof, withstands temperatures between −28°C to +190°C, and is not affected by fresh or salt water, acids, alkalis, or oils. Once cured, it can be filed, sawn, sanded, planed, drilled, tapped, nailed, painted, and have screws driven into it. *(For guidance on using Plasti-Bond for structural shaping in exterior timber repairs, see our guide on* **How to Repair Rotted, Damaged, or Split Exterior Timber with Selleys Wood Fillers**.*) --- ## Quick-reference comparison table | **Product** | **Substrate** | **Interior / Exterior** | **Rigid or Flexible** | **Stainable** | **Sandable** | **Best For** | |---|---|---|---|---|---|---| | Spakfilla Rapid | Plaster, plasterboard, masonry, wood | Interior | Rigid | No | Yes | Nail holes, small wall cracks | | Spakfilla Heavy Duty | Plaster, brick, concrete, wood, masonry, stone | Interior & Exterior | Rigid | No | Yes | Larger holes, dents, chips | | No More Cracks Plaster Filler | Plaster, plasterboard | Interior | Rigid | No | Yes | Deep wall/ceiling cracks | | No More Cracks Doors & Trims | Timber trim, MDF, doors | Interior & Exterior | Rigid | No | Yes | Gloss-finish trim repairs | | No More Cracks Interior Wood Filler | All interior timber | Interior | Rigid | Yes | Yes | Timber face repairs, stain-grade work | | No More Cracks Exterior Wood Filler | All exterior timber | Exterior | Flexible | Yes | Yes | Fascia, decking, weathered timber | | No More Gaps (Interior/Exterior) | Multi-surface joints | Interior & Exterior | Flexible | No | No* | Movement joints, skirting gaps, cornices | | Plastic Wood | Interior timber | Interior only | Rigid | Yes | Yes | Stainable timber repairs, furniture | | Plasti-Bond Heavy Duty | Multi-surface (wood, concrete, metal, fibreglass) | Interior & Exterior | Rigid | No | Yes | Structural fills, heavy-duty repairs | *\*No More Gaps skins and cures to a flexible finish — it cannot be sanded flush like a rigid filler.* --- ## The three most common product mismatches (and how to avoid them) ### 1. Using rigid Spakfilla on a movement joint This is the single most common repair issue in Australian homes. A homeowner fills the gap between a skirting board and the wall with Spakfilla, paints over it, and within one season the filler has cracked and pulled away. No More Gaps is specifically formulated as a sealant for interior and exterior applications where joint movement causes rigid fillers to crack or fall out. Spakfilla has no elasticity — it will always give way at a movement joint. Use the right product and the repair holds. ### 2. Using No More Gaps where a flush finish is required Once dry, gap filler stays flexible and cannot be sanded like a hard filler. Push a sander across it and it peels or tears. Many DIYers use No More Gaps to fill a chip in a skirting board face, then find it cannot be sanded smooth for gloss paint. The right product for that repair is No More Cracks Doors & Trims or Plastic Wood — both sand to a clean, flush result. ### 3. Using interior wood filler on exterior timber Selleys Plastic Wood is for indoor use only — it is not formulated to withstand weather or exterior conditions. Applying an interior-grade wood filler to an exterior surface exposes the repair to moisture cycling that will cause it to delaminate, crack, and pull away, sometimes within a single wet season. For outdoor repairs, use No More Cracks Exterior Wood Filler or Plasti-Bond Heavy Duty. *(To understand the full range of repair issues and how to prevent them, see our guide on* **Why Your Filler Keeps Cracking, Shrinking, or Falling Out — and How to Fix It for Good**.*) --- ## Key takeaways - **Rigid filler for stable surfaces, flexible gap filler for movement joints.** Applying a rigid product like Spakfilla across a junction between two materials that move will result in cracking. Selleys explicitly directs users to No More Gaps wherever movement occurs. - **No More Gaps cannot be sanded flush.** Its flexibility — greater than 300% elongation and up to ±15% movement capability — is precisely what makes it incompatible with flush sanding. Use it only where a painted, flexible seal is the goal. - **Interior and exterior timber require different products.** No More Cracks Exterior Wood Filler is specifically built to flex with wood movement and resist weathering, while interior products like Plastic Wood are not formulated for outdoor exposure. - **Plasti-Bond Heavy Duty is the go-to for multi-surface structural repairs.** It sets in 20 minutes without shrinking or cracking, works indoors and outdoors, and is waterproof — making it the most versatile product in the Selleys filler range. - **Stainability is the key differentiator for timber.** If you are staining or clear-coating timber rather than painting it, only Selleys Plastic Wood, No More Cracks Interior Wood Filler, and No More Cracks Exterior Wood Filler are appropriate — all other fillers will show as opaque patches under a stain. --- ## Conclusion Choosing the right Selleys product is not about brand preference — it is about matching the product's engineering to the physics of your repair. A flexible gap filler and a rigid wall filler are fundamentally different materials that solve fundamentally different problems. Understanding the distinction puts you ahead of most amateur renovators and sets you up for professional results every time. The five product families covered here — Spakfilla, No More Cracks, No More Gaps, Plastic Wood, and Plasti-Bond — cover every repair scenario you are likely to encounter in an Australian home. Once you know which family applies to your situation, the technique becomes straightforward. If it's Selleys, it works — provided you start with the right product for the job. From here, the logical next step is the hands-on application guides within this series: - **Interior wall repairs**: See *How to Fill Cracks and Holes in Walls and Plasterboard: A Step-by-Step Selleys Guide* - **Skirting boards and timber trim**: See *How to Repair and Fill Skirting Boards, Architraves, and Timber Trim Before Painting* - **Exterior and rotted timber**: See *How to Repair Rotted, Damaged, or Split Exterior Timber with Selleys Wood Fillers* - **Diagnosing repair issues**: See *Why Your Filler Keeps Cracking, Shrinking, or Falling Out — and How to Fix It for Good* --- ## References - Selleys Australia. "Spakfilla Rapid — Product Page." *Selleys.com.au*, 2024. https://www.selleys.com.au/products/putty-and-fillers/wall-filler/selleys-spakfilla-rapid/ - Selleys Australia. "Spakfilla Rapid Technical Data Sheet, Version 3.0." *Selleys.com.au*, Updated 16 June 2020. https://www.selleys.com.au/media/5flebzp2/selleys-spakfilla-rapid-tds.pdf - Selleys Australia. "No More Cracks Exterior Wood Filler — Product Page." *Selleys.com.au*, 2024. https://www.selleys.com.au/products/putty-and-fillers/rigid-gap-fillers/selleys-no-more-cracks-exterior-wood-filler/ - Selleys Australia. "No More Cracks Wood Filler (Interior) — Product Page." *Selleys.com.au*, 2024. https://www.selleys.com.au/products/putty-and-fillers/wall-filler/no-more-cracks-wood-filler/ - Selleys Australia. "Plastic Wood — Product Page." *Selleys.com.au*, 2024. https://www.selleys.com.au/products/putty-and-fillers/wood-putty/selleys-plastic-wood/ - Selleys Australia. "No More Gaps — Brand Overview." *Selleys.com.au*, 2024. https://www.selleys.com.au/products/our-brands/selleys-no-more-gaps/overview/ - Selleys Singapore. "No More Gaps Technical Data Sheet." *Selleys.com.sg*, 2020. https://selleys.com.sg/wp-content/uploads/2020/05/TDS-No-More-Gaps.pdf - Selleys Malaysia. "No More Gaps — Product Specification." *Selleys.my*, 2024. https://selleys.my/product/no-more-gaps/ - Pestrol Australia. "Selleys No More Cracks Exterior Wood Filler 450g." *Pestrol.com.au*, 2025. https://www.pestrol.com.au/buy-online/selleys-no-more-cracks-exterior-wood-filler-450g/ - Pestrol Australia. "Selleys No More Cracks Wood Filler Interior — Technical Data Sheet." *Pestrol.com.au*, 2025. https://www.pestrol.com.au/wp-content/uploads/2025/05/Pestrol-Australia-Selleys-No-More-Cracks-Interior-Wood-Filler-270g-Tech-Sheet.pdf - Mitre 10 Australia. "Selleys Maple Plastic Wood Filler 230g — Product Specification." *Mitre10.com.au*, 2024. https://www.mitre10.com.au/selleys-plastic-wood-230g - Double Bay Hardware. "Selleys Plasti-Bond Heavy Duty Bog — Product Specification." *Doublebayhardware.com.au*, 2024. https://www.doublebayhardware.com.au/products/selleys-plasti-bond-heavy-duty-bog-high-strength-building-filler-bhdb150g - Deziel, Chris. "Wood Putty vs. Wood Filler: When It's Best to Use Each." *Family Handyman*, July 2025. https://www.familyhandyman.com/article/wood-putty-vs-wood-filler/ - Angi Editorial Team. "Caulk vs. Wood Filler: Choosing the Right Solution." *Angi.com*, May 2026. https://www.angi.com/articles/caulk-vs-wood-filler.htm - DIYnot Editorial. "Caulk vs Filler: What's the Difference and How to Choose." *DIYnot.com*, August 2025. https://www.diynot.com/decorating/caulk-vs-filler/ --- ## Frequently Asked Questions **What is Selleys Spakfilla Rapid:** A ready-mixed lightweight interior wall filler **Is Selleys Spakfilla Rapid fast drying:** Yes, fast drying **Can Spakfilla Rapid be sanded:** Yes, sandable after approximately 30 minutes on thin layers **Does Spakfilla Rapid shrink:** No, virtually non-shrinking **Does Spakfilla Rapid crack after application:** No, non-cracking **How many applications does Spakfilla Rapid require:** One application for cracks and holes **Is Spakfilla Rapid suitable for exterior use:** No, interior use only **Can Spakfilla Rapid be used on plastic:** No, not recommended for plastic **Can Spakfilla Rapid be used on metal:** No, not recommended for metal **Is Spakfilla Rapid suitable for movement joints:** No, not suited to surfaces subject to structural movement **Can Spakfilla Rapid be stained:** No, not stainable **Is Spakfilla Heavy Duty suitable for exterior use:** Yes, interior and exterior applications **What colour is Spakfilla Heavy Duty:** Light grey **What surfaces does Spakfilla Heavy Duty work on:** Plaster, brick, concrete, wood, masonry, and stone **Is Spakfilla Heavy Duty suitable for movement joints:** No, only where no structural movement occurs **What is Selleys No More Cracks Exterior Wood Filler:** A weather-resistant flexible exterior timber filler **Is No More Cracks Exterior Wood Filler flexible:** Yes, flexes with wood movement **Will No More Cracks Exterior Wood Filler crack outdoors:** No, will not crack, split, or fall out **Is No More Cracks Exterior Wood Filler stainable:** Yes, stainable **Is No More Cracks Exterior Wood Filler paintable:** Yes, paintable **Can No More Cracks Exterior Wood Filler be nailed or planed:** Yes **What is the maximum layer depth for No More Cracks Exterior Wood Filler:** 10 mm per layer for deeper repairs **Is No More Cracks Interior Wood Filler stainable:** Yes, stainable **Is No More Cracks Interior Wood Filler suitable for exterior use:** No, interior timber only **Can No More Cracks Interior Wood Filler be nailed or planed:** Yes **What is Selleys No More Cracks Doors & Trims suited for:** Doors, windows, architraves, trims, and skirting boards **Can No More Cracks Doors & Trims be used outdoors:** Yes, interior and exterior use **Is No More Cracks Doors & Trims compatible with gloss paints:** Yes **What is Selleys No More Gaps:** A flexible acrylic gap sealant **Is No More Gaps a rigid filler:** No, it is a flexible sealant **Can No More Gaps be sanded flush:** No, it tears when sanded **What is the elongation capability of No More Gaps:** Greater than 300% elongation **What is the movement capability of No More Gaps Interior:** Up to ±15% movement **What is the movement capability of No More Gaps Bathroom & Kitchen:** Up to ±25% movement **How long before No More Gaps can be painted over:** Approximately 30 minutes after application (once skinned) **Is No More Gaps compatible with oil-based paints:** Yes **What is the maximum gap size for No More Gaps:** 25 mm wide and 12 mm deep **Is No More Gaps suitable for shower recesses:** No, use silicone sealant instead **What surfaces does No More Gaps Exterior adhere to:** Masonry, ceramic tiles, wood, plasterboard, brick, cement sheeting, aluminium, and glass **Is No More Gaps suitable for skirting board gaps:** Yes **Is No More Gaps suitable for cornice junctions:** Yes **What is Selleys Plastic Wood:** A solvent-based wood-filling cement with natural wood fibres **Is Selleys Plastic Wood suitable for exterior use:** No, interior use only **Is Selleys Plastic Wood stainable:** Yes, can be stained, varnished, or painted **Can Selleys Plastic Wood be sanded:** Yes **Can Selleys Plastic Wood be nailed or planed after curing:** Yes **What is the maximum fill depth per application for Plastic Wood:** 6 mm per single application **Is Selleys Plastic Wood flexible:** No, not flexible **What is Selleys Plasti-Bond Heavy Duty:** A two-part heavy-duty plastic putty for structural repairs **How quickly does Plasti-Bond Heavy Duty set:** Sets in 20 minutes **Does Plasti-Bond Heavy Duty shrink when curing:** No, sets without shrinking or cracking **Is Plasti-Bond Heavy Duty waterproof:** Yes **What temperature range does Plasti-Bond Heavy Duty withstand:** −28°C to +190°C **Is Plasti-Bond Heavy Duty resistant to salt water:** Yes, not affected by salt water **Is Plasti-Bond Heavy Duty resistant to acids and alkalis:** Yes **What substrates does Plasti-Bond work on:** Wood, plaster, brick, concrete, fibre cement, metal, alloys, ceramics, and fibreglass **Can Plasti-Bond Heavy Duty be drilled after curing:** Yes **Can Plasti-Bond Heavy Duty have screws driven into it:** Yes **Is Plasti-Bond Heavy Duty suitable for outdoor use:** Yes, indoors and outdoors **What is the primary diagnostic question before choosing a filler:** Does the repair site move? **What filler type suits movement joints:** Flexible gap filler, such as No More Gaps **What filler type suits stable surfaces:** Rigid filler, such as Spakfilla **Why does Spakfilla fail at movement joints:** It has no elasticity and will always crack under movement **Why can't No More Gaps be sanded:** It cures to a flexible finish and tears rather than sands **What happens if interior wood filler is used outdoors:** It delaminates, cracks, and pulls away from moisture cycling **Which Selleys fillers are stainable:** Plastic Wood, No More Cracks Interior Wood Filler, and No More Cracks Exterior Wood Filler **Which Selleys filler is best for nail holes in plasterboard:** Spakfilla Rapid **Which Selleys product is best for skirting board gaps:** No More Gaps Interior Multipurpose **Which Selleys product is best for rotted exterior timber:** No More Cracks Exterior Wood Filler or Plasti-Bond Heavy Duty **Which Selleys product is most versatile across substrates:** Plasti-Bond Heavy Duty **Is No More Cracks Plaster Filler suitable for plasterboard:** Yes **Does No More Cracks Plaster Filler dry quickly:** Yes, dries quickly **Does No More Cracks Plaster Filler sand easily:** Yes, sands easily with minimal shrinkage **Can Spakfilla Rapid be used on exterior timber that absorbs moisture:** No, not recommended **What is the key differentiator for choosing a timber filler for staining:** Whether the product is listed as stainable --- ## 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 **Selleys Spakfilla Rapid** - Product type: Ready-mixed lightweight interior wall filler - Drying: Fast drying; sandable in approximately 30 minutes on thin layers - Shrinkage: Virtually non-shrinking - Cracking: Non-cracking after application - Applications required: One application for cracks and holes where no structural movement occurs - Suitable surfaces: Plaster, plasterboard, masonry, wood (stable, interior) - Not recommended for: Plastic, metal, exterior timber subject to moisture absorption, surfaces subject to structural movement - Stainable: No - Interior use only: Yes **Selleys Spakfilla Heavy Duty** - Product type: Ready-mixed multi-purpose filler - Colour: Light grey - Suitable surfaces: Plaster, brick, concrete, wood, masonry, stone - Interior/exterior: Both - Movement joints: Not suitable where structural movement occurs - Stainable: No - Sandable: Yes **Selleys No More Cracks Plaster Filler** - Product type: Powder filler for plaster walls and ceilings - Suitable surfaces: Plaster, plasterboard - Drying: Dries quickly - Sanding: Sands easily with minimal shrinkage - Interior use: Yes **Selleys No More Cracks Interior Wood Filler** - Product type: Ready-to-use interior timber filler - Suitable surfaces: All interior timber - Stainable: Yes - Paintable: Yes - Adhesion: Excellent adhesion stated on label - Post-cure workability: Can be nailed or planed - Sandable: Yes - Exterior use: Not suitable **Selleys No More Cracks Exterior Wood Filler** - Product type: Ready-to-use weather-resistant flexible exterior timber filler - Flexibility: Flexes with wood movement; will not crack, split, or fall out - Stainable: Yes - Paintable: Yes - Post-cure workability: Can be nailed or planed - Maximum layer depth: 10 mm per layer for deeper repairs - Exterior use: Yes **Selleys No More Cracks Doors & Trims** - Product type: Ready-to-use filler for doors, windows, architraves, trims, and skirting boards - Interior/exterior: Both - Compatible paints: Gloss paints - Sandable: Yes **Selleys No More Gaps Interior Multipurpose** - Product type: Flexible acrylic gap sealant - Flexibility: Greater than 300% elongation/stretch - Movement capability: Up to ±15% - Sandable: No (tears when sanded; cures to flexible finish) - Paint compatibility: Water-based and oil-based paints; paintable approximately 30 minutes after application (once skinned) - Maximum gap size: 25 mm wide and 12 mm deep - Suitable applications: Skirting boards, cornices, interior window and door frames - Shower recesses: Not suitable; silicone sealant recommended instead - Formulation: Water-based **Selleys No More Gaps Bathroom & Kitchen** - Movement capability: Up to ±25% **Selleys No More Gaps Exterior** - Product type: Flexible exterior gap filler - Suitable surfaces/adhesion: Masonry, ceramic tiles, wood, plasterboard, brick, cement sheeting, aluminium, glass - Applications: Timber weatherboards, fences, eaves, around window and door frames **Selleys Plastic Wood** - Product type: Solvent-based wood-filling cement containing natural wood fibres - Setting: Fast-setting - Finish: Hard finish when dry - Stainable: Yes — can be stained, varnished, or painted - Post-cure workability: Can be sanded, nailed, planed, painted, or lacquered - Maximum fill depth per application: 6 mm; thicker fills require multiple layers - Flexibility: Not flexible - Interior use only: Yes **Selleys Plasti-Bond Heavy Duty** - Product type: Two-part heavy-duty plastic putty - Set time: 20 minutes - Shrinkage on cure: None — sets without shrinking or cracking - Waterproof: Yes - Temperature range: −28°C to +190°C - Chemical resistance: Not affected by fresh water, salt water, acids, alkalis, or oils - Suitable substrates: Wood, plaster, brick, concrete, fibre cement, metal, alloys, ceramics, fibreglass - Post-cure workability: Can be filed, sawn, sanded, planed, drilled, tapped, nailed, painted; screws can be driven into it - Interior/exterior: Both --- ### General product claims - Spakfilla Rapid delivers professional results for patching nail holes and filling small-to-medium cracks before painting - Spakfilla is described as Selleys' "flagship" ready-mixed wall filler and the "interior wall repair workhorse" - No More Cracks Exterior Wood Filler described as providing "a strong, long-lasting finish" and withstanding "harsh weather conditions" - No More Gaps described as ensuring cracks and gaps "stay hidden for longer" due to its flexibility - Plasti-Bond Heavy Duty described as the "most versatile product in the Selleys filler range" - Using the correct product for the repair type is claimed to produce "professional results the first time" - Applying rigid filler to a movement joint is characterised as "the single most common repair issue in Australian homes" - Interior wood filler applied outdoors will delaminate and fail "within a single wet season" under moisture cycling - Stainable fillers (Plastic Wood, No More Cracks Interior and Exterior Wood Filler) are described as the only appropriate options under stain or clear-coat finishes, as other fillers will show as opaque patches