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🛠️ Fix it like a pro, last like a legend!
Silverhook Big Boy Metal Filler is a 250ml professional-grade polyester filler packed with aluminium particles for excellent thermal conductivity. Designed for automotive, construction, and DIY repairs, it offers ultra toughness, easy sanding, and corrosion resistance. Ideal for metal, concrete, brick, and wood surfaces, it ensures durable, smooth finishes that withstand vibrations and temperature changes.












| ASIN | B00KX64QNI |
| Best Sellers Rank | 700 in Automotive ( See Top 100 in Automotive ) 4 in Fillers, Adhesives & Sealants |
| Blade Material | Aluminium |
| Brand | SILVERHOOK |
| Customer Reviews | 4.6 out of 5 stars 1,327 Reviews |
| Global Trade Identification Number | 05036029110210 |
| Handle Material | Metal |
| Handle material | Metal |
| Included Components | Applicator |
| Item Type Name | Metal Filler |
| Manufacturer | Silverhook ltd |
| Manufacturer Warranty Description | None. |
| Material | Metal |
| Model Number | BIG21 |
| Part Number | BIG21 |
| Recommended Uses For Product | Automotive repairs, Construction, DIY repairs, Exterior surfaces |
| Recommended uses for product | Automotive repairs, Construction, DIY repairs, Exterior surfaces |
I**A
Excellent filler, very easy to work with
I used this for a small automotive repair, and it worked perfectly. It mixes easily, spreads smoothly, and has a great working time before it starts to set. Once dry, it sands down to a very fine finish. It's a high-quality product that makes DIY repairs look professional.
J**Y
Great Product
Really good product. easy to use and sand just the job.
R**R
Seems to do the job.
Having invested in a builders’ wheelbarrow many years ago, not many of the modern versions reach the solidity and build quality of my original. However, it has had many years of tough work - building and gardening - so I decided to reinforce all the joints and welds. This product, which is the typical base filler and hardener mix, has good reviews. These products are always “tricky” to apply, e.g. too much hardener on a hot day, it will go off very quickly, so read the instructions on setting times and temperatures. So far, so good, “antique” but solid wheelbarrow looking all set for a few more years in the garden after a low cost refurbishment. All reviews of modern wheelbarrows denting easily and handles bending are a thing of the past. Like many of these products, it has a strong smell, so apply in a well ventilated space; ensure the metal to which is being applied is dry and give it a good wire brushing and dust before application.
D**E
Great stuff!
Used to fill holes where extra locks were on my van. Easy to use, sets very quickly so once mixed apply straight away
J**M
Dependable and Effective Solution for Metal Repairs!
The SILVERHOOK Big Boy Metal Filler has proven to be an invaluable addition to our toolbox. As a DIY enthusiast, finding a reliable and effective metal filler is essential for handling various repair projects, and this product has surpassed our expectations. The 250 ml quantity provides an ample supply for multiple repairs, making it a cost-effective option for tackling both small and large-scale metal fixes. The easy-to-use formula spreads smoothly and evenly, allowing us to achieve seamless and professional-looking results every time. The versatility of this filler has been particularly convenient, as it can be used on various metals, including steel, aluminum, and iron, making it a go-to option for a wide range of repair and restoration projects. Its compatibility with different primers and paints has allowed us to achieve a flawless finish that seamlessly blends with the surrounding surfaces. Overall, the SILVERHOOK Big Boy Metal Filler has become our preferred choice for all our metal repair needs. Its durability, versatility, and seamless application make it a top-notch option for anyone looking for a dependable and effective metal filler solution. Highly recommended for all DIY enthusiasts and repair professionals!
Q**N
The best alloy filler. 5 star product
This filler is the real deal. I used this alloy filler to repair a sizable chunk that had come off my BMW alloy. This was due to a repair shop hitting one of the spokes with a hammer when attempting to take a bolt off and then decided to use a wire brush to clean it and then spray paint it with a standard grey spray, so I thought I'd be better attempting the fix myself than leaving it with him. I couldn’t be more satisfied with this product. It applied smoothly, adhered well, and filled the area with ease. The consistency was just right, making the application process straightforward and stress-free. Once set, it sanded down cleanly and blended perfectly. This product worked exactly as expected—no surprises, just solid performance. Be sure to use plenty of masking tape when applying. £7 for a large 250ml sized tub is a bargain! Highly recommend. See my photos for the before and after pictures. Now I am just waiting for the colour matched paint. 5 star product.
W**S
All good
Good product and service
M**K
Not impressed
Not great goes off too quick
Trustpilot
1 day ago
3 weeks ago