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Advice for painting existing concrete patio and garage

Budding Contributor

Re: Advice for painting existing concrete patio and garage

Hi @Peggers. The distressed look came from a lot of pressure washing to see if that would remove the existing red paint. 

Thanks for your advice - I will go with White Knight Ultra Pave Quick Dry

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Budding Contributor

Re: Advice for painting existing concrete patio and garage

@sseb86, using a belt sander  would be a good idea to remove the top coat of paint, grade 140 , then feather the edges if you don't want to remove all that paint. One little tip, between the top coats, wrap your roller cover whilst on the roller, in a bread bag and tightly twist the ends and tuck them  around the arm of the roller.  When you come to use it again, you will find no difference in the roller whatsoever, it will still be soft and paint coatable (is that a word  haha). This is the finished job on my verandah( Couldn't take another photo, batteries in my camera died on me )The bricks are paint free. I found using  brown packing tape all along the brickwork from one end to the other end. This enabled me to avoid getting a paint brush drying line from painting the edge below the brick work, because I had  a brush ready and painted about a 2.5 metres without  worrying about the bricks then rolling  the paint then another 2.5  metres approx. then rolling again, until the end, and  presto, no brush line,  not like you get whe painting around a door of a room. let me know how you got on, please. Like Rob Pegley, I too am a British paint user, great stuff.

IMG_0004.JPG

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Budding Contributor

Re: Advice for painting existing concrete patio and garage

Looks good @FrankC !

 

Hi All,
I've finally finished the patio area. I removed all the old thick paint with paint stripper and a wire brush and painted bare concrete. I'm very happy with the finish. It took some time to get here and i'll explain what I wanted to do VS what happened below.
From the above posts I wanted to use a belt sander to get back to bare concrete. Little did I know that I would never remove it all due to the concrete being quite course and not perfectly flat. After some research i found the White Knight Ultra Pave Quick Dry can be painted on existing paint. I also confirmed this with one the men behind the paint counter at Bunnings who recommended i just paint over the top if you are happy with some imperfections and if the existing paint is OK.
From this my new plan was to:
1. Sand back any imperfections with belt sander
2. Pressure wash to clean
3. Use Berger Active Clean
4. Paint as per instructions

Progress Pictures:

sand.jpg
Above picture following sanding(it just sanded back the raised areas of the the concrete):

 

pressure.jpg
Above picture following Pressure washing the top section (lower section had only been sanded at this point)

Looking at the top section of concrete: Its easy to see that pressure washing pulled up more paint than i had wanted if i was going to paint over the top. This might have given the paint an uneven patchy look if I painted over it in this state. I am a glutton for punishment and 'doing it right the first time' so I ended up buying the paint stripper and went at it with a scraper and wire brush. This gave me the below after 2 days.

strip and pressure.jpg
I used about 10Litres of Poly Paint stripper to do 16m2. (The instructions recommend 1Litre per 0.4m2) Sanding definitely helped the paint stripper do its thing so it wasn't all in vain.
After this i used Berger Active Clean and then painted the 2 coats (the above picture is just before cutting in/painting and looked no different)

 

a3afbfc3-c10a-4069-8150-39630bf88134.JPG

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(the red flakes is the old paint debris and will be in my garden bed for years to come. Its not dried into the paint)

a3d62932-d285-407a-b89d-a229713f142f.JPG


Lessons Learnt for the patio area:
1. If the existing paint is ok I would just paint over it and forget about it. I wouldn't recommend what I did to anyone.
2. Using Paint stripper is terrible and I don't recommend it at all unless the area is small. It is also very messy.
If the area is larger I would look at mechanical means of grinding and just deal with the dust (Dust is the main reason i didn't hire a grinder).

I've decided to leave the garage as is given the above. Its just a garage and not worth the headache of removing all the paint and priming and painting again!
Thanks to everyone who contributed to this discussion.
Sean

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Budding Contributor

Re: Advice for painting existing concrete patio and garage

Thanks, Sean, your very welcome.  That area has come up very well; is that colour 'Antique Silver', a Taubman colour for White Knight  Ultra pave. That is the colour showed in the photo of my verandah. Nice colour grey with a hint of blue, reminiscent of French grey.  :smile:

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Bunnings Team Member
Bunnings Team Member

Re: Advice for painting existing concrete patio and garage

Hi @sseb86,

 

That came up looking fantastic! It sounds like you've really done everything you can to prepare the surface, and I trust it will allow the paint to adhere well for many years to come. The trick now is to re-coat when you see wear and tear showing. Unfortunately, once it starts flaking and is then compromised, it is too late to re-coat.

 

Congratulations on a job done really well and many thanks for sharing your results.

 

Mitchell

 

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Budding Contributor

Re: Advice for painting existing concrete patio and garage

I went with Gibraltar Grey. Its grey in direct sun light and then blueish grey in the shade. I would have preferred a straight grey without the blue tinge but my wife seems to like it

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Experienced Contributor

Re: Advice for painting existing concrete patio and garage

Smart move! It will be much easier to live with the floor being a tad bluer than you'd like and your wife happy, than to live with an unhappy wife making your life somewhat bluer than you'd like. 

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