Hi Folks Had my block paying down a couple of days, the chaps did an excellent job
But the blocks all look like sort of sandy , i have washed them but its reappeared, im pretty sure its not efflorescence as the spares are not like this
Have included a picture , will this go away , the leftover blocks don't look like this at all
looks OK from here
they havent done inboard cutting but it looks neat enough
where the weather is damp the sand has clumped up a little
it will be fine from the look of that photo
see here for the correct cutting technique
cheers LLL
As otheres have said, it's just surface dust and it will weather away. Some of the blocks look as though they;ve had sand or stone stored on top of them, which has rendered them dirtier than some of the others, but still nowt to fret over.
Cuts are neat but wrong - should never have pieces with only 3 edges. Again, it's not the end of the world, but one of the indictors I use to separate the classy contractor from the run-of-the-mill.
cheers, they were off new pallets, i guess its the kiln dried sand but i cant seem to shift it with a hose , a friend mentioned it will stay like that until totally dry and will brush off, apparently they has a similar problem,
it looks to me like cutting dust which once wet can be a pig to shift. Did they cut any on the drive or do cuts elsewhere and did they use water suppression
deanos wrote:cheers, they were off new pallets, i guess its the kiln dried sand but i cant seem to shift it with a hose , a friend mentioned it will stay like that until totally dry and will brush off, apparently they has a similar problem,
If you get a dry day at this time of year then with a stiff broom, it should all come off, failing that let the winter throw it's worse at it, then clean the paving in spring, use a light bleach wash, as you will most probably have a bit of algae starting to appear, then you should have the finish you are after, just remember to re-sand when paving is dry if using a pressure washer, job done.
Had this look on part of our drive, It was down to cement dust, being dropped on the blocks when a garden post was replaced, also if they`ve been cutting brick, the dust gives a similar look, a year on and its gone away...
I agree with r896neo its cutting dust and should of been removed before final compaction with the vibrating plate
and yep its a pig to shift now, leave it till March/April and hope the winter frost, snow wind and the rain shifts some of it or you will have to power wash it off
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I know that inboard cutting has mechanical advantages but from an aesthetic point of view the dart way looks better - particularly with narrow paths. The OP's path looks very nice from my inexpert point of view.
But with most narrow paths, you should be able to set out so that darts and slips are avoided.
I know customers often insist upon it, but I never liked the use of 45° herringbone on narrow paths. It's so labour intensive and so wasteful. A bit of deterrent pricing can often persuade them to switch for 90° HB or even a simple transverse stretcher. If you;re charging, say, 70 quid a metre for normal driveway/courtyard areas, then 120 quid/m² for paths less than 1200mm in width seems reasonable.
then with a stiff broom, it should all come off, failing that let the winter throw it's worse at it, then clean the paving in spring, use a light bleach wash, as you will most probably have a bit of algae starting to appear, then you should have the finish you are after, just remember to re-sand when paving is dry if using a pressure washer, job done.
