Isopon body filler - what a 'con' !

[Spectric]

These tins have always been like this, the metal lid is not re-used once removed as you have the plastic one and on several occasions I have had to punch a hole through the metal lid to get it of because of the pressure difference. These products do not last, try comparing a new tin with one you have had for three or four months and you find that the new one once mixed is smooth and pliable so spreads easily and works well whereas the older stuff is less pliable and does not fill or spread as well.

Thinking about wastage, what about tubes of silicon and EBT that you may only use half a tube for the job but next time you come to use it, it has set and can only be thrown out, imagine how much must be wasted across the UK.

 

[Phil Pascoe]

The set silicone makes a good belt cleaner.

 

[worn thumbs]

I would never dream of buying diy body filler like isopon. Ridiculously over priced for the tiny amount you get. I just go to our local Car paint specialist & buy a gallon can of the same stuff for little more.

Its quite true you can buy a cheaper filler than P38 at retail prices.I would prefer it at trade price if possible but don't rate the budget filler very highly,they tend to be more porous and will absorb more moisture.It suffices for some jobs I suppose.

 

[Derek Cohen (Perth Oz)]

I purchased a tin of this the other day ...

... and it arrived full.

I must have received your share as well?

Regards from Perth

Derek

p.s. I suggest your's was poorly filled. Take it back.

 

[Fordgate1]

Could be that its cheaper, and more advantageous for the shareholders, to have one size of tin, rather than buy a variety of sizes. One tin fit all policy.

 

[Phil Pascoe]

Ronseal 2 part = half full. Everbuild 2 part = half full. It's not just Isopon, it's all of them. There's obviously a reason for it.

 

[Fergie 307]

I purchased a tin of this the other day ...

View attachment 166683

... and it arrived full.

I must have received your share as well?

Regards from Perth

Derek

p.s. I suggest your's was poorly filled. Take it back.

I would agree, have bought goodness knows how much of this stuff, both the commercial sizes, and latterly the little diy jobs. Often full enough for the stuff to be stuck to the back of the lid, certainly never seen one remotely like the OP's. It actually lasts for ages, if it gets a bit thick then simply add some fibreglass resin, you can do this anyway if you want to vary the consistency.

 

[ChaiLatte]

I'm sure you are right about not enough pressure to explode but is it posible there might be sufficient pressure to push the inserted tray and plastic lit off?

Could I throw in a possible counter example to the 'air gap' theory?

Please have a look at Toolstation 74884 (or the whole product group at Resin | Polyester Resins & Resin Anchors | Toolstation). I do not see any air gaps when the polyester resin is packaged that way.

However, maybe if it expands, it just moves the bung inside the tube that the plunger of the applicator gun presses against.

 

[Spectric]

Could I throw in a possible counter example to the 'air gap' theory?

Going by the fact that I often find the metal lids unwilling to come off until I punch a hole in them suggest it is not a positive pressure in the tin but a negative one. Maybe the stuff contracts in the tin creating the extra space and reducing the pressure within. The P40 is the resin with P38 being a polyester filler.

 

[Keith 66]

Polyester resin does not like air as the styrene content will gas off & harden on its own, So a big tin with a little splash of filler in the bottom wont last as long as if it was full up. All part of the buisiness model to get mugs to buy more!

 

[mc281]

Are you trying to tell us that expansion is going to double the size of the stuff ? Really ?

No... I'm telling you that the resin mix contains highly volatile chemicals with high vapour content which causes pressure in the tin. The greater volume available for expansion of same prevents the increased temperature dependent pressure from blowing the lid off.

 

[mc281]

Going by the fact that I often find the metal lids unwilling to come off until I punch a hole in them suggest it is not a positive pressure in the tin but a negative one. Maybe the stuff contracts in the tin creating the extra space and reducing the pressure within. The P40 is the resin with P38 being a polyester filler.

The lid is intentionally tight to make sure it won't open to easily.

 

[mc281]

Taken at face value, that suggests a valid reason but I'm struggling to get my head around the vapour from the stuff exerting so much pressure that the tin will explode if it doesn't have a large empty space. Do you have any source you can point to that provides more detail to confirm the theory ?

No unfortunately but there is some confusion in the comments creeping in. The space, for example is not DOUBLE the size and was never suggested as such. The space as already mentioned is mostly to contain the rest of the gubbins contained within the 'lid'.... gloves, spreader, hardener tube etc. The seller has to supply everything needed and it is a convenient, renewable material and a convenient, compact and robust storage method.

 

[Keith Cocker]

Carrefour supermarkets in France have started putting shelf labels with products where the supplier has cut the weight or volume, that way the customer can make an informed choice.

Bloody French!!!

 

[RogerS]

No unfortunately but there is some confusion in the comments creeping in. The space, for example is not DOUBLE the size and was never suggested as such. The space as already mentioned is mostly to contain the rest of the gubbins contained within the 'lid'.... gloves, spreader, hardener tube etc. The seller has to supply everything needed and it is a convenient, renewable material and a convenient, compact and robust storage method.

BS. The depth of the lid is enough to take 4x the amount of hardener and the wee black spreader. No gloves.

 

[stuart little]

What's the tin size got to do with it anyway, as long as you get what yer be paying fer!

 

[Distinterior]

What's the tin size got to do with it anyway, as long as you get what yer be paying fer!

I suppose it's the perception that by putting/selling a smaller quantity in a larger container, you are being misled.....That was certainly my impression when I opened up my tin of filler back in 2021....

 

[RogerS]

So I contacted them for comment weeks ago and was told QA would 'get back to me'. Nada.

I calculated the depth of product needed to meet the 250ml (including the minimal amount of hardener) and I'm pretty sure mine was nowhere near that. So I'm getting another tin and will measure the height of product then take it from there.

 

[stuart little]

So I contacted them for comment weeks ago and was told QA would 'get back to me'. Nada.

I calculated the depth of product needed to meet the 250ml (including the minimal amount of hardener) and I'm pretty sure mine was nowhere near that. So I'm getting another tin and will measure the height of product then take it from there.

See my previous reply - "What the heck has the tin size got to do with it - as long as you get what you're paying for?"

 

[RogerS]

See my previous reply - "What the heck has the tin size got to do with it - as long as you get what you're paying for?"

I think you're missing the point. Take a tin of paint, for example. When you open it for the first time, you expect to see the paint nearly to the top of the tin. A bottle of Titebond. Ditto. It's all about expectations.

Secondly, am I getting what I'm paying for ? To be decided.