Can I use sand came underneith old patio for cement mix

[ric1982]

Hi,

We have removed some of the old stone patio which was layed on top of a sand bed. (the patio could be about 20-30 years old).
I need to create some cement mix to lay some new patio elsewhere in the garden. I am planning to use as mortar bed. My question is , can I just use this sand instead of buying cement mix sand from DIY store? Its already there in the garden.

Or this is sand useless now?

Thanks

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[Gazzahoof]

I have the same question but my sand looks a lot cleaner, I would like to use some of it if possible for the new mortar bed. Wonder if maybe I just use 1 part old in a mix with the rest fresh or should I just forget it. Also if I dont use it are there any uses for it in the garden ?

 

[conny]

Sand is cheap enough to buy new so I wouldn't waste time using old stuff that probably has foreign matter in it.
You could use the old sand on your lawn to help improve drainage if you have clay based soil or as filler below compost/soil in pots.