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Posted: Thu Mar 18, 2010 11:23 pm
by Craig2
I Knew I had read it on here way back when...
Losing joint sand - Almara - 27 May 2002
The foot of my block paved driveway is on a slope and the joints are wider than elsewhere in the driveway and as a result I lose jointing sand in heavy rain. I recently had driveway power washed and sealed - fresh jointing sand was added after sealing and if anything the problem is worse. Have you any tips/sugggestions as to how I might keep sand in place.
Thanks,
Alex
Tony McCormack - 27 May 2002
Hi Alex,
Is there some reason why the joints are wider at the threshold of your driveway? They should all be the same size, really - around 3mm.
Anyway, there's a couple of ways to keep the jointing sand in place. The simplest is to use a "Joint Stabilising Fluid", such as Keybond by Marshalls. This is, basically, a PVA glue that is diluted with clean water and allowed to soak into the joints whereupon it sets and binds the sand grains together.
The other option is to use a paving sealant (see Sealants page). This does more or less the same job of binding the sand grains together, but also creates a seal over the entire pavement.
Whereas the keybond-type products seal only the joints and have no discernable affect on the appearance of the paving itself, the acrylic or urethane sealants give the blockwork a sort of 'varnished' appearance that, to be honest, isn't to everone's taste.
anyway, probably best I just get on with it, i'm probably going to give it a shot the sometime in the week before Easter so I will report back then.
Posted: Thu Mar 18, 2010 11:35 pm
by Craig2
Marshalls Keybond - water miscible blend of styrene & butadiene (SBR) for 2-5mm joints...
lol.
Posted: Fri Mar 19, 2010 5:49 am
by mickg
well I think its best you do get on with it because you asked a question then decided not to listen to anyones valued opinion.........."shakes head in disbelief"
good look with it because I think your going to need it as I don't think for one minute that Marshall's keybond is exactly the same as PVA
in fact I will find out today as I will contact Marshall's for you
Posted: Fri Mar 19, 2010 7:19 am
by lutonlagerlout
i wouldnt use pva or sbr on CBP
its a recipe
and its not for success!
LLL
Posted: Fri Mar 19, 2010 8:24 am
by Craig2
I am certainly listening Mick, that is why I am here,I am not sure how you think you are helping the situation entering a thread with such an attitude, I want to Question a situation and get peoples opinion of which I Value and the only suggestions I have dismissed (I feel I did politely so not to cause offence)are the ones suggesting Sealing as I never asked for an alternative suggestion for what I wanted to do, just opinions on keybond/Pva and we have learned that it would seem it is in fact an SBR,
you can ring Marshalls if you like but please don't do it on my behalf and if you think they would,if it were true, tell you it was just and SBR/PVA then I too shake my head in disbelief
@LLL, I'm not trying to be funny bud but do you care to elaborate? is it just a flippant comment or do you have first hand experience?
Posted: Fri Mar 19, 2010 8:39 am
by cookiewales
craig a decent sbr ie ronofix is 50 pound ish 5 gallon then diluted down the gloss on top is similar to expoxy degrade away try a small patch at 7 to 1 am sure this will work you could also roll on then couple bags kiln sand brushed over top will clean of cheers cookie :;): ???
Posted: Fri Mar 19, 2010 1:29 pm
by irishpaving
I don't think there is a need for this to turn into a bicker or tit-for-tat.
There are pro's and con's with most methods to fix a problem like this and the same would go for use of pva which will have more con's rather than pro's.
It is not our business what you do and i for one never meant any offence.
GL
:;):
Posted: Fri Mar 19, 2010 5:39 pm
by irishpaving
Just a thought this Craig... How about filling a large bottle up with a nozzle on it and feed your mix into the joints... 
Posted: Sat Mar 20, 2010 1:53 pm
by Craig2
sorry if I offended you Irishpaving, I just got a bit tense as I was feeling a bit tender after Mickgs post.
after all its only about saving my customer maybe £20 or so.
I am also not keen on being shafted by Marshalls which is how I felt some years ago when I used Keybond
I just wanted to hear peoples thoughts and I am glad I did because I will probably use SBR now, after a test of course.
thanks for everybodys help, I will be sure to report back my findings.