Best way to seal a garage floor?

Best way to seal a garage floor?

Author
Discussion

dasherdiablo1

Original Poster:

3,530 posts

221 months

Friday 17th July 2009
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My floor is driving me mad!

About 2 months ago I added a workshop to the back of my garage. Problem is the new concrete floor is continously dusting. Every time I sweep it it dusts up. This week I've applied 2 bottles of sealer from Wickes, I applied it exactly as advised in 3 coats but it hasn't make any difference. I've then applied 2 additional final coats and still rubbish.

Thing is I want to improve the garage next year my removing render and painting the walls/replacing roof etc and hope to put down a decent interlocking tile or paint (probably epoxy).

In the meantime I want to stop this dusting. Any ideas on best solution?

Thanks in advance!
David

TheD

3,133 posts

199 months

Friday 17th July 2009
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How long was the concrete down before you applied the sealer? What kind of sealer is it?. Is it a concrete sealer or a patio and brick sealer?
You could always try a Pva mix

T350 Al

619 posts

191 months

Friday 17th July 2009
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Just doing this myself now for the very same reasons! I've got my paws on some non-slip floor paint from B&Q; £17.99 for 5ltrs. I already used some undercoat to seal and am just waiting for some good weather to apply the non-slip.

Might be worth a look!

HRG.

72,857 posts

239 months

Friday 17th July 2009
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I used some Johnstones floor paint on mine, I think it says the concrete has to be down six months before application.


sleep envy

62,260 posts

249 months

Friday 17th July 2009
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the slab won't have fully cured in 8 weeks

water will still be bleeding from it which is why the sealant isn't staying down

give it another couple of months before you reapply it

Orb the Impaler

1,881 posts

190 months

Friday 17th July 2009
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Mine is still doing this after 15 years!

dasherdiablo1

Original Poster:

3,530 posts

221 months

Friday 17th July 2009
quotequote all
Thanks guys for the rapid response!

It's been down for around 3 months and to be honest that is more than enough time for it to have cured. On site you can load up Holorib concrete floors after 2 weeks!

I think the problem is these ready mix companies often add more water than is actually needed to keep it workable. The result being when you vibrate & then float the surface the cement/ballast settles leaving a watery weak layer at the top, this obviously remains weaker under traffic as the bulkier aggregate is deeper down. In hindsight I should have left it 50mm lower an then finished with a structural fibre screed!

I must admit I think I'll go down the PVA route and then paint at a later date.

sleep envy

62,260 posts

249 months

Friday 17th July 2009
quotequote all
dasherdiablo1 said:
It's been down for around 3 months and to be honest that is more than enough time for it to have cured. On site you can load up Holorib concrete floors after 2 weeks!
after 3 months is a different story

cured sufficiently to load up is one thing, curing times is something else - have you never tested and analysed the test cubes?

bertie

8,550 posts

284 months

Friday 17th July 2009
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Once it's dry, forget trying to paint it, waste of time in my opinion and expierance, it'll always flake off, usually attached to your tyres!

I bit the bullet and did mine with this, the only way to get a decent floor IMHO.

http://www.versatileflooring.co.uk/garage-flooring...

StreetDragster

1,518 posts

218 months

Friday 17th July 2009
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Just on confirm, its this stuff you used from wickes?

http://www.wickes.co.uk/Concrete-Dustproofer-Surfa...

I did this on my driveway about six months ago, and i've got to say it worked perfectly.

In the garage i laid Epoxy garage floor paint, theres a thread on here i started about it somewhere, that has also worked perfectly.

Thanks

Matt

kellys hero

544 posts

250 months

Friday 17th July 2009
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This sounds ridiculous but it worked on my concrete floor which like the O.P was just concrete dust.

I put about 1/4 liter of PVA glue into a bucket of water and brushed it round with a broom, the water and PVA soak into the top of the concrete and the PVA seals it, you can then paint on top if you still want to. This stopped the dust overnight and has been down for 3 years now, there is a small patch I missed under the work bench which is still dusty so I could comapre before and after.

It is a very quick and inexpensive way to seal a concrete floor.

pimpin gimp

3,282 posts

200 months

Friday 17th July 2009
quotequote all
kellys hero said:
This sounds ridiculous but it worked on my concrete floor which like the O.P was just concrete dust.

I put about 1/4 liter of PVA glue into a bucket of water and brushed it round with a broom, the water and PVA soak into the top of the concrete and the PVA seals it, you can then paint on top if you still want to. This stopped the dust overnight and has been down for 3 years now, there is a small patch I missed under the work bench which is still dusty so I could comapre before and after.

It is a very quick and inexpensive way to seal a concrete floor.
spot on, I did mine a few months ago. just load up pva and water into the fence sprayer (I'm lazy) spray all the walls and floor, brush the floor around a bit to make sure it;s even and leave for a day or two - once it's soaked in.. dust be gone!

bertie

8,550 posts

284 months

Friday 17th July 2009
quotequote all
pimpin gimp said:
kellys hero said:
This sounds ridiculous but it worked on my concrete floor which like the O.P was just concrete dust.

I put about 1/4 liter of PVA glue into a bucket of water and brushed it round with a broom, the water and PVA soak into the top of the concrete and the PVA seals it, you can then paint on top if you still want to. This stopped the dust overnight and has been down for 3 years now, there is a small patch I missed under the work bench which is still dusty so I could comapre before and after.

It is a very quick and inexpensive way to seal a concrete floor.
spot on, I did mine a few months ago. just load up pva and water into the fence sprayer (I'm lazy) spray all the walls and floor, brush the floor around a bit to make sure it;s even and leave for a day or two - once it's soaked in.. dust be gone!
And then tile over it!

tom g

1,046 posts

195 months

Friday 17th July 2009
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Could also screed it, the self levelling stuff is very easy to apply.. just pour it on

GregE240

10,857 posts

267 months

Friday 17th July 2009
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I recently did mine with "International" garage floor paint from Homebase. Cost 40 quid for 5 litres.

I did not seal the concrete beforehand, and so far it has stayed down very well - even the areas which see a lot of "traffic" (i.e. out to the beer fridge & back).

I echo sleep envys comments about curing - if it is still letting water vapour out then painting it will be a waste of time as it will lift it off.

I got a roller on a long pole as well - you'd kill yourself doing it by brush. And preparation was everything - I brushed then hoovered the concrete to get the last vestiges of dust off.

crusty

752 posts

220 months

Friday 17th July 2009
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I believe that a concrete slab drys a mm a day, ie if you have a 100mm slab allow 100 days before painting etc

Biggriff

2,312 posts

284 months

Saturday 18th July 2009
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Elephant version; bigger and fatter; therefore better coverage!

The Lukas

2,773 posts

194 months

Saturday 18th July 2009
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PVA isn't bad.

dasherdiablo1

Original Poster:

3,530 posts

221 months

Tuesday 21st July 2009
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I went the PVA route and no more dust! Down side is I used standard PVA as I wasn't sure I'd be able to paint the waterproof PVA, which means if it gets wet it become 'live' again.

Can't wait to paint it!!!! What's the best paint?