Posted: Sun Jun 18, 2017 12:24 pm
As long as you are patient and meticulously clean, then Dangerpoint would be fine. but bear in mind that SBR will accelerate an initial cure/hardening of the mortar so you will get a very limited working life.
To counter this, the usual response is to mix just a bit at a time, but this often leads to variation in the mortars colour, as it's difficult to be consistent with the ratio of sand to cement. In such cases, it's better to prepare a dry mix of the sand and cement, at least a bag of sand at a time, and then just wet a small portion it with the dilute SBR as required, maybe a quarter bucket, and use that before wetting-up the next bit. That way, it *should* be a consistent mortar.
The brush-in product your mate used may well be one of the one-part polymerics that are, not to mince words, just crap. A good 2-part resin mortar will cost maybe 80-100 quid per 25kg, and, with that type of paving, you should be getting 12-16m² per 25kg. I'm not sure hgow big is the area you have but the photie suggest a couple of 25kg tubs would be ample. 200 quid??? When you consider that would see you completing the jointing, without any staining or any great effort, in around 30 mins, maybe 200 quid seems a good investment?
For some people, when they've spent, say, 5 grand on paving, and then invested umpteen weekends and evenings getting it laid, 200 quid can seem like a real bargain. Why spoil the ship for a ha'p'orth of tar? (A reference there for the younger readers!)
To counter this, the usual response is to mix just a bit at a time, but this often leads to variation in the mortars colour, as it's difficult to be consistent with the ratio of sand to cement. In such cases, it's better to prepare a dry mix of the sand and cement, at least a bag of sand at a time, and then just wet a small portion it with the dilute SBR as required, maybe a quarter bucket, and use that before wetting-up the next bit. That way, it *should* be a consistent mortar.
The brush-in product your mate used may well be one of the one-part polymerics that are, not to mince words, just crap. A good 2-part resin mortar will cost maybe 80-100 quid per 25kg, and, with that type of paving, you should be getting 12-16m² per 25kg. I'm not sure hgow big is the area you have but the photie suggest a couple of 25kg tubs would be ample. 200 quid??? When you consider that would see you completing the jointing, without any staining or any great effort, in around 30 mins, maybe 200 quid seems a good investment?
For some people, when they've spent, say, 5 grand on paving, and then invested umpteen weekends and evenings getting it laid, 200 quid can seem like a real bargain. Why spoil the ship for a ha'p'orth of tar? (A reference there for the younger readers!)
