Cement

01902

Hi all,

It looks like some wet cement or concrete has gone onto the car in three drops and dried. Any idea how to get it off?

Thanks!

rovertom

I'd shampoo it continuously and see does it soften and fall away.
Do not rub it.
How big are the spots?

01902

rovertom wrote:

I'd shampoo it continuously and see does it soften and fall away. Do not rub it. How big are the spots?

Hi

They are large drops, just rubbing them with my finger they feel solid. Should I use hot water?

rovertom

01902 wrote: »

Hi

They are large drops, just rubbing them with my finger they feel solid. Should I use hot water?

I'd use warm water with whatever suds you use to wash the car and see how it goes.

Foxhole Norman

There are dedicated concrete removers around, AutoSmarts Congo and Concept Chemicals Surge would break it down and dissolve it off paint, I'd always give it a light polish afterwards too.

MetzgerMeister

Limescale remover or a citrus-based product will break it down. Then with a wet piece of kitchen paper, place it flat over the concrete and pinch it up from the middle. This will ensure you don't rub it around causing damage to the paint.

Warm water and suds will do absolutely nothing. If it did, you could never wash concrete paths/patios etc.

rovertom

MetzgerMeister wrote: »

Limescale remover or a citrus-based product will break it down. Then with a wet piece of kitchen paper, place it flat over the concrete and pinch it up from the middle. This will ensure you don't rub it around causing damage to the paint.

Warm water and suds will do absolutely nothing. If it did, you could never wash concrete paths/patios etc.

I assure you it does help. Have used it on domestic glazing to remove concrete but not cars. Fair enough it won't desolve a large mass of concrete but concrete spotting will be softened by the warm water and soap. It will also get under it in parts and work into it that way.
Using your argument a citrus based detergent could be used to desolve footpaths.