Some sort of waterproof tape ..

[shaneystar2]

We have water going down the back of the sink and it's running down the wall behind into the cupboard below .This is very complicated :)
The sink is only a gap of about an inch and half from the tiled splashback and has been set into a beechwood worktop .Over time this has started to go all grotty ,the grout is all nasty and any water that gets spashed around is running down the back of it and under the lip of the sink into the cupboard .
This usually only happens when Mr S is doing any washing up .I've tested it with a glass of water :)
My son is going to fit a new sink and worktop for us ....but ..
he's full of good intentions but we may have to wait a while ....
In the meantime is there some sort of waterproof tape that I can buy to shore up this gap pro tem.

[Old_Geezer]

Unsure about tape, you could always check the local DIY sheds. In your shoes, as a temporary measure, I think I'd bung it all up using a silicone sealant.

[boxtops]

You could do a very temporary job with Duck Tape - lots of it.

[237SJ]

Clear silicone?

[carrust]

You could try siliconing some 2"x1" planed timber on to the wall & worktop.

[jomifl]

You could try acrylic sealant (decorators caulk) this will stick to damp surfaces as long as you allow it to dry eventually, whereas surfaces have to be bone dry for silicone to stick.

[woofgang]

google on amazon for waterproof duct tape....

or this stuff is good http://www.qvcuk.com/...cm_scid.KeywordSearch Its a cross between adhesive and silicone sealer and you can slice it off again with a stanley knife or qvc have the remover paste
http://www.qvcuk.com/...*500136*,cm_scid^dtlr

[ladybird49]

standard milliput is marvellous for all sorts of repairs , google it

[heathfield]

All-weather or waterproof Duck (duct) tape would be better than ordinary duct tape. DIY places will have it.

[The Builder]

This is a common problem, Shaney. I think the last time I dealt with it, I cut a piece of slate flagstone and bedded it on top of the timber as a sort of raised "shelf".
In the meantime, ask at a builders' merchants for 100mm polythene tape. It's used for jointing damp proof membranes.

[shaneystar2]

Thank you all for your helpful answers especially The Builder .I managed to get some of this tape (Grayston ) at a local ironmongery/Aladdins cave place and have shored it up for now .