Help! Expanding foam down the sink!

ScorpioLady_2

Was using some of the expanding foam, fill up the big gaps stuff the other day, which is brilliant and works a treat.
However friend then washed stuff out into the sink!!!!
Now the sink is blocked............any suggestions please?
(Can't access the ubend under the sink due to boxing in.)

nickj_2

i think the only way is to remove boxing and undo the u bend and hope that it's not gone too far

good luck

HugoSP

You can get foam eater. I've never used it so I cannot vouch for it.

The other thing you could try is that liqu sink and drain unblocker, but I don't think this will do it.

I fear you're going to have to remove the boxing in and replace the trap. TBH you should be able to get to this anyway.

nelly_2

A maassive blob once fell off a ceilling hit the back of my head and rolled inside my tea shirt and down my back took about a week to pick it all off

withabix

HugoSP wrote: »

You can get foam eater. .

It isn't a magic wand however. I've had people use this on some of my sites and don't think it will unblock a drain. It's not runny enough and isn't particularly aggressive. It's normally used to get excess foam off window frames, as this foam is commonly used to seal around uPVC frames.

As water causes polyurethane foam to expand and cure more quickly, I suspect it will have got a good hold inside your pipes. That's why it's a b*gger to get off your skin (as Nelly said) - it reacts with the moisture in your skin.

I reckon you will need to remove and replace the pipework until you get to the end of the foam 'plug'.

How much went down the drain anyway???

ScorpioLady_2

Thanks folks.
I did take the boxing apart and emptied the ubend. Luckily it was only a smallish blob and now all is well.
Brilliant stuff in the right place however it was quite a frightening lesson!!
Thanks for all your replies.