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Big Boy Plastic Flexi Filler 250ml

4.7 (321 reviews)
SKU: 240302142427008 EAN: 5036029110227
Two component, corrosion resistant putty with high elasticity and gripping ability. Can be used as both a general and exterior purpose filler on ABS, PVR, PVC, GRP, aluminium and wood. Includes filler, hardener and applicator. Hazard safety codes: Xn,R10,R20,R36/38,R66,R67. Sales restricted to over 18s
Brand Silverhook
Manufacturer Part Number BIG31
Size 250 ml
Suitable For Damaged Plastic Bumpers
Type Flexible Plastic Filler
No features listed
No items listed

Customer Reviews 321

4.7
321 reviews
5 star
262
4 star
42
3 star
6
2 star
5
1 star
6
Just the job for filling your crack !!
5.0
March 1, 2026
Tazborn Verified Purchase

Great smooth application and strong bond when cured used in conjuction with the Fat Boy Mesh greated a really strong repair to a Classic Motorcyle Fairing panel

Great Value
5.0
February 27, 2026
27d04010-1aa0-5759-9dbb-e647ecf5681d Verified Purchase

Used this to fill holes in a boat rudder, same product in a chandlery is 3x the price.

Fantastic Filler
5.0
February 22, 2026
Paul Ellangowan Verified Purchase

First class filler - dried quickly and was a good price.

Great product
5.0
February 14, 2026
Antobob Verified Purchase

Great price great product. Also not too critical on amount of hardener used

Great bit of kit
5.0
December 8, 2025
Sprogvig58 Verified Purchase

These filler is great it's easy to mix, it dries to a dark grey colour, is easy to sand. The only down side to this product is the instruction they say half a can of filler to half a tube of hardener not very helpful if your only mixing small batches like me

Very good product.
5.0
November 24, 2025
91101022-e27a-5134-b810-58f2a46da375 Verified Purchase

Easy to work with, quick drying and sands well. It can also be moulded a bit if heated up with a heat gun. Very pleased

Really easy to use
5.0
November 20, 2025
FergOB Verified Purchase

Need this to make good some joints on plastic coving. Worked really well and really easy to shape once hardened.

Good stuff
5.0
November 13, 2025
Mad shadows Verified Purchase

Decent- used to repair plastic keter unit . Did the job and easy to sand

Fix a hole.
5.0
November 6, 2025
Buford T Verified Purchase

Does what you’d expect. As others say… use it quick. 2 mins max before it sets

Great product at a decent price
5.0
November 3, 2025
Mitch_ Verified Purchase

It does exactly what it says on the tin, fills damage to plastic. Easy to apply, and fast drying. It’s just what I needed.

Good filler, easy to sand
5.0
November 2, 2025
Gee Bee Verified Purchase

Good filler easy to sand. I used this after sanding ceramic floor tiles and filling dips where the grout is for overlaying with vinyl. Excellent.

Smooth filler.
5.0
October 20, 2025
SGrif Verified Purchase

Nice filler. Mixed well. Very smooth and set really quickly. Sanded smooth

Camper van fibre glass roof repair.
5.0
October 15, 2025
Billy have a go Verified Purchase

Helpful advice from Toolstation staff for repairing dink and cracked fibre glass roof on camper van. This flexi filler did the job and was relatively easy to sand down. Would recommend.

A decorators dream come true?
5.0
October 7, 2025
NW1 Verified Purchase

A really great product - as long as the surface is properly prepared, i.e. rubbed down, no dust, it will does what it says on the tin. Can be rubbed down with not too much difficulty and paints well

Product was exactly as expected, with no issues. Instructions for use are also clear and easily understood
1.0
September 24, 2025
97c0197a-463b-52e7-876e-0357246fb241 Verified Purchase

Does exactly what it says on the tin ! Product did the job of repairing a hole in a plastic suitcase and the finish was better than expected. I would buy the product again, if circumstances required...

Just the job.
5.0
September 13, 2025
a68c8378-35b0-532c-bba2-c973f5197981 Verified Purchase

Does exactly what it says on the tin...good value. Used to patch repair 50 year old garden pond.

Nice quality filler, easy to sand and worked well on a plastic bumper repair
4.0
September 7, 2025
RChee M Verified Purchase

Nice quality filler which is easy to sand and has worked well on a plastic bumper repair. Dropped a star as I found the guideline for the proportion of hardener to filler a bit simplistic. "Use half a tube hardener to half a tub of filler". As my repairs were much smaller than half a tub, it was a bit of trial and error, but got the repair done, so wouldn't want to put anyone off using this stuff.

Very flexible filler
5.0
August 25, 2025
Gentleman d Verified Purchase

Excellent filler very smooth finish actually repaired my patio door, great stuff

Unworkable after 2 mins
1.0
August 23, 2025
Oxford87 Verified Purchase

Says on the tin and in the description that it starts to cure after 5mins, it is probably less than 2 mins. Therefore it is not very good for large projects / repairs, again says on the tin, mix half the tin with half the hardener, yep probably good mix instructions but you will not be able to use that much before it becomes unworkable. I had a largish project to do, therefore I cannot recommend it.

Useful filler used on wood
5.0
August 20, 2025
Sandy Bob Verified Purchase

Handy filler used on wood. Adheres well and reasonable to sand. Flexible

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