Garage floor painting gone wrong

[red_slr]

Spent last night painting the garage floor. Did not get much actually pained as spent the first hour or two sweeping it out. There was a lot of dust. I assume concrete dust. The garage is 9 years old.

Anyway, seemed fairly dust free. Gave it a good coat and left for 24 hours. Luckily only did about 30%.

Tonight went back in to carry on with the rest of it and thought I would give it another quick sweep... sweeping the area already done its coming straight off like a fine powder.

I assume the concrete is breaking up into dust?

Whats the best way forward? Some kind if seal?

[Andrew Gray]

Do the floor with a PVA Seal ie its like wood glue dilute with water about 5 parts water to 1 of PVA Glue and sweep the garage with a broom using this as a wash that will seal it for you
A

[micky metro]

You need to seal the floor 1st, pva/water mix, unibond is ideal, wickes own make is cheaper.

[red_slr]

Ahh... I have plenty of PVA from when I was doing some tiling.

So just brush it in ok thanks!

[red_slr]

Should I try and remove the stuff that's not taken well?

[Andrew Gray]

red_slr said:

Should I try and remove the stuff that's not taken well?

No that will make an almighty mess let it dry brush again and seal

[red_slr]

Its dry now, it just comes off with a gentle brush into a fine powder. Should I pva over the top of it or try and brush it off?

[MoelyCrio]

What sort of paint is it? Only the two pack paints stay down for any length of time in my experience. The single tin stuff from the chain stores is hopeless.

[V8RX7]

I used to suggest using PVA and water but some have had issues with it becoming a gloopy mess when it later gets wet.

You may get away with SBR but I'd play it safe and use the proper stuff - the clue's in the name "concrete sealer"

[Drumroll]

Brushing may actually be making more dust. You need a good vacuum cleaner over the surface. PVA may not work depending on the type of paint. You may need to look at a surface hardener/sealer, before you do any painting.

[Igurisu]

As drumroll said,ifound the sweeping never worked.pushing the brush over the concrete was like taking the surface off and creating more dust every time I did it. I vacuumed with an old Henry then poured a water and PVA mixture on the floor to seal it.

[jmorgan]

Yep, hoovered ours with a sacrificial hoover.

Though we did not use pva, did not know that we had to so just roller end the paint on as soon as hoovered.

[PAULJ5555]

This has got good reviews, I bought a tin on Monday and painted half of my garage, it goes down well and after a few days seems really stuck down. The long term reviews are good also.

I just swept and vacumed my floor, no PVA. 25 year old garage.



http://www.screwfix.com/p/no-nonsense-trade-floor-...

[Muppet32]

[guindilias]

IIRC it's recommended to etch the floor first with hydrochloric, to make sure of a good bond?

[red_slr]

This is the situation...

I don't really want to change the paint. I have a big drum of PVA... so I reckon that's going to be worth a go?

[TonyToniTone]

I am in a similar situation and have ordered Concrete Hardener and Dustproofer, not had chance to use it yet..

https://www.amazon.co.uk/gp/product/B00133KZXU/ref...

[Freedomfighter]

Very simple. Seal with concrete sealer. Paint with two part epoxy paint.

[fergus]

https://www.google.co.uk/search?hl=en&q=concre...

[Far Cough]

RedSLr - Just done mine and had similar dusty issues and an original floor paint down that was coming up in places just like your photo. This is what I did ....

First step is to brush and then hoover as described above. Then put a slightly watered down version of PVA Bond down , maybe 80/20 - Put it on with a soft roller and soak the place. You want it to soak into all the nooks and crannies. Once dry reapply with a full strength PVA bond and leave to dry. This will seal all the dust in and give you a good base to lay paint.I added some masonary paint to my final coat of PVA for its latex content just to help the seal. I had some anyway, left over from the walls and ceiling.

The paint you choose is upto you. Whether you choose a traditional floor paint for the "painted" look or go for an epoxy resin 2 pack for the more smoother "Latex" look. Traditional floor paint you will need several coats.

Paints - Do it right , do it once - buy good stuff not cheapo bargain gear !

I am going to see if the traditional floor paint will handle a car driven across it and if not my backup plan is 2 pack epoxy