--- product_id: 48007029 title: "Big Boy Structural Hole Filler 250ml With Fibreglass" price: "R685" currency: ZAR in_stock: true reviews_count: 8 url: https://www.desertcart.co.za/products/48007029-big-boy-structural-hole-filler-250ml-with-fibreglass store_origin: ZA region: South Africa --- # Corrosion & Water Resistant Added Glass Fibre Reinforcement Heavy Duty Hard Filler Big Boy Structural Hole Filler 250ml With Fibreglass **Price:** R685 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Fix it like a pro, last like a legend! ## Quick Answers - **What is this?** Big Boy Structural Hole Filler 250ml With Fibreglass - **How much does it cost?** R685 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/48007029-big-boy-structural-hole-filler-250ml-with-fibreglass) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Fast-Setting Formula:** Hardens in under 15 minutes so you can move from repair to finish without delay. - β€’ **Versatile Surface Grip:** Bonds seamlessly to wood, metal, concrete, and select PVCsβ€”one filler for all your projects. - β€’ **Professional Finish Ready:** Sands smoothly after curing, ensuring a flawless surface every time. - β€’ **Unmatched Structural Strength:** Glass fibre infusion delivers superior durability for long-lasting repairs. - β€’ **Weatherproof & Corrosion Resistant:** Built to withstand moisture and rust, perfect for exterior fixes like car panels and window frames. ## Overview Big Boy Structural Hole Filler is a premium 250ml heavy-duty filler enhanced with glass fibre for exceptional strength and elasticity. Designed for large surface repairs on wood, metal, concrete, and some PVCs, it offers excellent adhesion and corrosion resistance, making it ideal for both interior and exterior applications. Fast-setting and easy to sand, it delivers professional-grade results that save time and money on vehicle and structural repairs. ## Description From the manufacturer Big Boy Structural Hole Filler High elasticity Excellent adhesion Ideal for use on large surfaces 250ml Available Silverhook Structural Hole Filler is a bridging compound with added glass fibre, offering easy application and strong bonding qualities. This filler is ideal for use on large surfaces; characterised by its high elasticity and gripping ability on a wide range of surfaces. It can also be used as a general-purpose filler on wood, metal, concrete, and some PVCs. As it is corrosion and water-resistant, it makes a perfect exterior filler e.g. window frames, walls, car body panels, etc. Step 1 Ensure surface to be filled is free from grease and loose dirt. Brush off surface dust with damp cloth and leave to dry. Step 2 Mix the filler with hardener in the ratio supplied, (e.g. half tin of filler - half a tube of hardener) thoroughly to obtain a uniform colour. Step 3 Apply mixture immediately with firm pressure using spreader and build up to required level. Paste will start to harden within 5 minutes. Note: Hardening times will vary. Step 4 Leave to set for approximately 1 hour. Once dry surface can be sanded and wiped over. Review: Easily as good as the more expensive brands. - I have always been an isopon fan but thought I would try this after reading reviews and because of the value for money difference. This has done an amazing job, used to rebuild 3 35mm diameter holes that were cut from a panel to fit air grills, just meshed across the back and applied this filler, came back when dry and hit it with the sander, usual finishing with the wet n dry and sprayed with the usual filler primer and I was left with the perfect finish for spraying. The hardened product is strong, adheres really well, sands very nicely and is really nice when finished with fine wet n dry before spraying. Very highly recommend for anyone into auto or metal cabinet repairs etc. A really good bridger and filler at a very good balance of value for money. Review: Very effective - Used to patch rust affected wheel arch on my car. Hardens quickly within about 10 minutes so use small amounts frequently. Very pleased with the product. ## Features - Causes serious eye irritation. - Causes skin irritation. - Flammable liquid and vapour. - Harmful if inhaled. - Heavy Duty Hard Filler - Added Glass Fibre For Strength - Grips to Wide Range of Surfaces - Corrosion & Water Resistant ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007Z4ODFW | | Best Sellers Rank | 649 in Automotive ( See Top 100 in Automotive ) 6 in Fillers, Adhesives & Sealants | | Brand | SILVERHOOK | | Customer Reviews | 4.5 4.5 out of 5 stars (532) | | Date First Available | 30 April 2012 | | Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. | | Item Weight | 530 g | | Item model number | BIG51 | | Manufacturer | Silverhook ltd | | Manufacturer part number | BIG51 | | Model | BIG51 | | Package Dimensions | 10.7 x 10.4 x 8.7 cm; 530 g | ## Images ![Big Boy Structural Hole Filler 250ml With Fibreglass - Image 1](https://m.media-amazon.com/images/I/81E2N82xTzL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easily as good as the more expensive brands. *by G***Y on 25 July 2026* I have always been an isopon fan but thought I would try this after reading reviews and because of the value for money difference. This has done an amazing job, used to rebuild 3 35mm diameter holes that were cut from a panel to fit air grills, just meshed across the back and applied this filler, came back when dry and hit it with the sander, usual finishing with the wet n dry and sprayed with the usual filler primer and I was left with the perfect finish for spraying. The hardened product is strong, adheres really well, sands very nicely and is really nice when finished with fine wet n dry before spraying. Very highly recommend for anyone into auto or metal cabinet repairs etc. A really good bridger and filler at a very good balance of value for money. ### ⭐⭐⭐⭐⭐ Very effective *by D***R on 13 July 2026* Used to patch rust affected wheel arch on my car. Hardens quickly within about 10 minutes so use small amounts frequently. Very pleased with the product. ### ⭐⭐⭐⭐⭐ Good stuff *by L***F on 9 July 2026* Easy use and drying within minutes so better perhaps not to mix too much all at once ## Frequently Bought Together - Big Boy Structural Hole Filler 250ml - Silverhook BIG11 Body Filler , 250-Millilitre, gray - SILVERHOOK Big Boy Aluminium Mesh 30 x 20 cm (12''x 8'') --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/48007029-big-boy-structural-hole-filler-250ml-with-fibreglass](https://www.desertcart.co.za/products/48007029-big-boy-structural-hole-filler-250ml-with-fibreglass) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-16*