Filling cracked patio gaps

Steveb21 · 6 Apr 2020

Got many cracks around patio area (around swimming pool).

I plan to clear out all existing material in the gaps and then refill.

What would be the best product to use?
I have seen some kind of sand you can just brush in - is this a good idea?
Also, what can I use the clean up the slabs? I have jet washed... the small black spots do not come out.

plastic_peanut · 7 Apr 2020

Probably a pre-mixed mortar would be your best bet once you have removed the lose material. You will likely have a colour mismatch so may be best if you can point the other gaps as well.
Thin bleach (not thick) and a stiff brush prior to jet washing should remove the nasty stuff

Steveb21 · 7 Apr 2020

Would it be best to mix and then brush in, sprinkle water over the top after to make it set?

The area in question is around a swimming pool. I am not too sure what the previous owners used to fill however it has cracked pretty bad.

Something like this: https://www.wickes.co.uk/Sika-Fast-Fix-All-Weather-Jointing-Paving-Compound---Grey-14kg/p/177822#

Steveb21 · 29 May 2020

PLanning to do this in the next few days - once I have removed the current cracked pointing.

would a mix of 3:1 sand:cement be suitable? Mixed dry, spread in and then slightly watered over?

Ian H · 1 Jun 2020

No, brushed in dry mix never lasts.

Steveb21 · 1 Jun 2020

If I do wet what ratio mix do I use?

Ian H · 2 Jun 2020

Steveb21 said:
If I do wet what ratio mix do I use?

I’d do 4:1 but currently thinking about using the tubbed resin stuff.

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Filling cracked patio gaps

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