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Big Boy Metal Filler 250ml

4.7 (309 reviews)
SKU: 240302142426011 EAN: 5036029110210
Temperature extremes and vibrations can be tough on surfaces, and this ultra-robust Big Boy metal filler has been designed to cope with whatever the environment throws at it. Use it to fix dings and bumps in cars, vans and trailers, or as a general-purpose filler on concrete, bricks and wood. It conducts heat efficiently, so it''s suitable to use on steel, aluminium and zinc. \nThis metal filler includes a putty, an accelerator and a handy applicator. Because it contains tiny aluminium particles, it has high conductivity and grips easily to many surfaces. Plus, if you''re after a flawless finish, you''ll find this filler simple to apply, quick to dry and easy to sand down once it''s hardened. Simply apply your paint and stand back to admire your handiwork.\n• Corrosion-resistant for surfaces subjected to vibrations or frequent temperature changes\n• High thermal conductivity and gripping ability for use on steel, aluminium and zinc\n• Includes filler, hardener and applicator\n• Hazard safety codes: Xn, Xi, R10, R20, R36/38\n• Age-restricted to over-18s
Brand Silverhook
Manufacturer Part Number BIG21
Size 8.5oz.
Type Metal Filler
No features listed
No items listed

Customer Reviews 309

4.7
309 reviews
5 star
251
4 star
45
3 star
6
2 star
4
1 star
3
Big Boy filler
4.0
February 25, 2026
Bluzman Verified Purchase

Did the job, solid finish, used to patch up door sill

Handy
5.0
February 22, 2026
J Doddd Verified Purchase

Does just what you expect used it to make good holes in wall supporting heavy curtains which had fallen due to crumbling plaster

Great Product
5.0
February 21, 2026
Lagardo Verified Purchase

Easy to work with in terms of drying time, finish and ease for sanding.

Filling dents on motorhome roof
4.0
February 21, 2026
TXX Verified Purchase

It does what it says on the tin, Very easy to use.

Big Boy Metal Filler
5.0
February 4, 2026
D Talbot Verified Purchase

Good quality Body Filler, Ordered online ready in 5 minutes Staff at Salford as always Friendly helpful and efficient

Does what it says on the tin
5.0
February 1, 2026
Water Guy Verified Purchase

Does what it says on the tin, easy to use and not too expensive

Filler
3.0
January 21, 2026
30f26992-8723-5905-a416-60e1747dc570 Verified Purchase

It's OK when you mix it it's quite runny took a while to set. not as good as isopon

Battle with Metal
5.0
January 10, 2026
PavasG Verified Purchase

It works nicely. I had no idea of this product before.

A good product, but..
4.0
January 8, 2026
Andy Maltby Verified Purchase

A good product which I have used before. However, for small filling applications there is no way of getting a filler/hardener ratio accurate without incurring a lot of waste. For smaller applications, it would be good if they produced a two tube pack.

Sets fast, easy to sand
5.0
November 13, 2025
KNBD Verified Purchase

Set rather fast in summer temperatures outside. Strong rather 'chemical' smell until it sets.

Its car body filler
5.0
November 6, 2025
Andy 2p Verified Purchase

Its body filler, it does what it says on the tub.

It's fine!
5.0
October 26, 2025
Bill MK Verified Purchase

As promised, works well for putting a thin skim onto concrete.

A great fix for worn out aluminium.
5.0
October 24, 2025
Cross County Coaches Verified Purchase

My 2nd alternator kept twisting on its mountings to the point where its cooling fan kept touching the adjuster bolt. I decide to strip the pivot bolts out to assess the wear & found that the metalastic bushes had worn through and the aluminium alternator pivot holes, one being elongated & the other almost square. I degreased these mount holes before replacing the bushes & left to set overnight.
I bought an extra long drill bit to keep the new holes in line with each other & fitted new bolts. The results are as new & I still have most of the product left for future use!

Using metal filler
5.0
October 18, 2025
35c04629-b411-56ad-a0cf-8150064e3336 Verified Purchase

Bought this to fill a couple of rust holes, cut away flakey rust and treated rest with rust converter. This stuff was quite easy to use, to mix small amounts mix it by weight on a digital scales 16 gms. filler to 1 gm. hardener, and work quick, you get about 4 mins. before it starts to thicken. Dries hard in no time best to remove any large amounts asap. This was the first time I have tried to do this type of thing, turned out not too bad, not professional but passable. I would reccomend this stuff and will use it again.

Good price and easy to use
3.0
October 7, 2025
lightmedia Verified Purchase

Good price and easy to use, does exactly what it says on the tin

Great product
5.0
October 4, 2025
bbde1fed-71f6-5f4e-b285-416e5dd1949d Verified Purchase

Great filler, hardens well, quick setting so need to work on one patch at a time, working time about 5 minutes

Don't Know
4.0
September 26, 2025
519c585d-a568-584e-a8d9-488129feca5e Verified Purchase

Probably good but I sold it with a holed deck mower.

Filler
4.0
September 14, 2025
Gundog1 Verified Purchase

Good size tin looks a bit short of the harder for the tin size but a good filler

Quick drying and smooth when sanded
5.0
September 13, 2025
Steveo6257 Verified Purchase

The product mixed well,went off quickly and sanded really nicely. I used it to fill a hole on a car wing after cutting the rust out. In my opinion it worked better(on a small area) than standard body filler. But as others have said it is a little runnier than std body filler.

Filler
5.0
September 3, 2025
Diy john bob Verified Purchase

Seems very good name works as it says should do well for many other jobs

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