Keeping block paving weed free

[rubble2]

Hi,

I have just powerwashed and re-sanded my block paved drive. I am now looking at the most effective way of keeping it weed free, I always used to use Sodium Chlorate which was cheap and worked well - now that this is no longer available I wondered what suggetions there are for an effective alternative?

I would like something that can be applied in bulk from a watering can rather than some sort of spot application so any suggestions appreciated.

I did look at sealant for the paving but I am not keen on the finish it results in and have been put off by negative comments on the 'Paving Expert' website.

Given all of that does anyone know what is best as a once or twice per year deterrent to weeds?

Thanks

 

[JohnD]

Pathclear.

 

[foxhole]

You can brush in salt to the paving, not many weeds like it.

 

[rubble2]

I did look at pathclear, but the info seems to suggest that it is recommended for gravel surfaces rather than block paving, do you think that it would be effective on my application?

Regarding salt, I guess that this is very similar chemically to Sodium Chlorate - I notice that you suggest brushing it on, is that preferable to applying it in a solution of water?

 

[JohnD]

yes

 

[foxhole]

I did look at pathclear, but the info seems to suggest that it is recommended for gravel surfaces rather than block paving, do you think that it would be effective on my application?

Regarding salt, I guess that this is very similar chemically to Sodium Chlorate - I notice that you suggest brushing it on, is that preferable to applying it in a solution of water?

A salt solution will be too weak and run off, brushed into the gaps it may last longer and mix with the sand, but easy to apply whenever you sweep the paving.

 

[r896neo]

Pathclear is not suitable for use on block paving because of the run off into drains.

There is a product called dansand which has a pre emergant weedkiller mixed in with the kiln dried sand but i don;t know if its any good?

 

[JohnD]

Pathclear is not suitable

yes it is, unless you tip it out of a bucket.

From a watering can, it runs into the sand joints between the bricks, then soaks in.

 

[r896neo]

I don;t mean run-off from application i mean because it has a residual effect the redisual pesticide runs off in heavy rain in the weeks/months following application.

For pesticide use Block paving is classed as an impermeable surface.