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Flagstone base...

Seabass2500

LawnSite Member
Location
Indiana
I have built many flagstone patios (mortared is the topic) and I have always put 4" compacted limestone gravel and 4" of concrete with rebar then the flagstone. I have read in here that some people simply put the flagstone on the compacted gravel... that seems susceptible to cracking in the near future. *and I am talking about a flat patio on already flat ground.

Obviously the concrete will be 'better' but in a flat, solid soil location is the concrete just a waste of time and money?

The reason I am asking this now is that I am bidding on a job where it will be impossible to get the concrete to the new patio without taking it 5g bucket by 5g bucket. (same with the stone)

I appreciate the input!
 

sheshovel

LawnSite Fanatic
Location
zone 7 CA
I believe that you can get just as "Better" a flag patio with a good properly compacted base and thick stones.I have not seen concrete or mortar that does not crack .Used crushed not limestone in there and don't mortar your joints,use gravel or something else and that Poly stuff the guys talk about in here
 

Dirty Water

LawnSite Fanatic
Location
Redmond, WA
Seabass2500 said:
I have built many flagstone patios (mortared is the topic) and I have always put 4" compacted limestone gravel and 4" of concrete with rebar then the flagstone. I have read in here that some people simply put the flagstone on the compacted gravel... that seems susceptible to cracking in the near future. *and I am talking about a flat patio on already flat ground.

Obviously the concrete will be 'better' but in a flat, solid soil location is the concrete just a waste of time and money?

The reason I am asking this now is that I am bidding on a job where it will be impossible to get the concrete to the new patio without taking it 5g bucket by 5g bucket. (same with the stone)

I appreciate the input!

Pump trucks are $250 a day here, check your local concrete companys. They can get concrete just about anywhere.
 

PurpHaze

LawnSite Fanatic
Location
Visalia, CA
In our area there are even guys that run nothing but the pumpers and are not associated with any particular concrete company. They'll have the concrete trucks deliver to them set up on the street in front of your house and then they'll pump it anywhere on the property.
 

treedoc1

LawnSite Senior Member
Location
Northern VA
If you want mortared joints you must have a concrete base.
If you just have a gravel or 'dust' base you must have 'dust' joints.

Any different...payup payup payup ...callbacks for non performance.


Merry Christmas everyone.
 
Good morning,

Your question about paving bases, depends on a number of conditions, I have designed and built very very many patios, streets,park paths, even roads.. and the best advice you can find on all is this link..

http://www.pavingexpert.com/ajmcinfo.htm

My own preference was a compacted sub base, with around 4-6 inches of limestone, then a stiff( dryish ) coarse sand /cement bed with slightly softer sand used for the pointing, it is important to prevent mositure from entering the joints as ultimately it is the freeze thaw action which will break out the flagstones.. also it is much easier to lay a really good flag stone patio if you used 1 inch thick, true rectangular flags , if you would like to see some examples let me know.
 
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