Plasterboard adhesive

[Keiran O'Connor]

Left some in a bucket and it went solid and rain and frost never made it crumble, just stayed Rock solid. So thought why not use it to patch up this little bit of concrete by the gate.

am obviously going to be slammed for this

but does anybody think it’ll set because 3 hours later it’s still as soft as it was when I laid it.

 

[Wayners]

You should of run masking or duck tape either side to keep clean and bought some concrete mix you just add water for that repair.

Plasterboard adhesive is gypsum based and won't last long outside.

As for not setting it can take a few hours. And several days to dry out..

That's all I want to say..

 

[ElecCEng]

If it’s still soft scrape it out.

 

[DIYDave.]

On a cosmetic note - stark difference in colour between old and new

Is that ok and no issue there ?

Apart from this, no, it’s not suitable

 

[Worcesterman]

It won’t last long. So many other options.

 

[Keiran O'Connor]

Scrapped it out, start again tomorrow. Had to use chisel for bottom layers 6cm deep

 

[Keiran O'Connor]

Bought this hope this will be better.

 

[Jord86]

It's still the wrong stuff, that's for internal floors.

 

[know-somebody-who-can]

It's still the wrong stuff, that's for internal floors.

And probably 10x the price of what is needed !

 

[ElecCEng]

https://www.screwfix.com/p/tarmac-multipurpose-concrete-grey-5kg/271gy

 

[Wayners]

https://www.diy.com/departments/u-can-mix-in-the-bag-concrete-17kg-bag/242771_BQ.prd

Maybe cheaper stuff about but will do job

 

[AnotherTopJob]

Ready mix or a bag of ballast and cement will cost you less than a tenner.

 

[Worcesterman]

Ballast and cement would work fine.

 

[Keiran O'Connor]

I terna

It's still the wrong stuff, that's for internal floors.

Internal and external floors mate

 

[Worcesterman]

Probably work but really meant for larger shallower surfacing. It’ll look a bit smooth next to your slabs.