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Old 16-07-2018, 08:08 AM   #1
The Sligo Rover
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Default Sealing concrete floor in my railway shed.

Help please, before I progress my project much further I need to do something to seal the concrete floor in my shed. What is the best way to seal the concrete and keep the dust down?
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Old 16-07-2018, 08:11 AM   #2
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When I moved into my garage I painted the floor with dilute PVA glue. I used Unbond sealing and general purpose PVA as that's what I had to hand at the time. But there many other concrete sealants available and its really a matter of choice. This IMO would do the job well for a good price Link to PVA
I was lucky, as within a few days a friend replaced their lounge carpet and I had the old one which was laid on top of a cheap tarpaulin purchased from a local market stall the tarpaulin was laid on the then dried and sealed floor with the carpet cut to size on top. I now have a sealed and reasonably warm floor.
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Old 16-07-2018, 08:15 AM   #3
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DIY stores do the stuff various names and brands, if its possible a false floor is better, nicer to stand on, keeps the cold from the floor away....1" polystyrene with chipboard 8' X 2 boards that interlock......
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Old 16-07-2018, 08:37 AM   #4
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Thread moved to more appropriate section.
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Old 16-07-2018, 08:51 AM   #5
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Garage floor paint should do the job or for smaller areas brick & tile paint. I've used Wickes gloss brick and tile paint on my outbuilding floor and on doorsteps.
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Old 16-07-2018, 10:23 AM   #6
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I would Unibond (PVA) it, as suggested, then give it coat of Garage floor paint.
If you want to make it comfortable I would then put down Carpet with underlay.
It is cold laying on garage floor soldering under a layout in the winter. It will still be cold but not half as bad.
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Old 16-07-2018, 10:36 AM   #7
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I once worked in a DIY shop as a Saturday Assistant. From this experience I can tell you PVA is not suitable for a concrete floor. Garage floor paint is very expensive. I think the easiest thing to do is to put down a piece of carpet. I have found with other things like lino and boards have the effect of trapping moisture underneath.
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Old 16-07-2018, 11:18 AM   #8
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Quote:
Originally Posted by 4VEP View Post
I once worked in a DIY shop as a Saturday Assistant. From this experience I can tell you PVA is not suitable for a concrete floor. <Snip>.
Not correct.
Read the text on the container to see what PVA seals Concrete is one such its recommended for!!

See picture taken from a can of Evo Stick PVA. Text re concrete flooring is roughly in the middle (Sorry its sideways!)....
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Old 16-07-2018, 11:21 AM   #9
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From real life experience: garage floor paint will seal fresh concrete and (in my case) won’t flake off - 15 years and counting. Old concrete, possibly contaminated with oil etc, won’t let the paint stick without a sealer. As to which sealer is best, I can’t say.
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Old 16-07-2018, 11:37 AM   #10
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PVA is recommended for sealing concrete floors and a very good job it does.
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