The Brew Cabin

Posted: **Mon Aug 27, 2012 5:47 pm**

Is it necessary to use SBR both in the mortar mix and as a bond bridge slurry? Could I get away with just the bond bridge?

I'm worried about its effect of reducing the working time of the mortar which, for a novice, might not help me. Though I do see the benefit the bond bridge will offer in ensuring a sound bed.

If I do add it to the mortar, the mix ratio states 2.5-5l per 25kgs cement. Does that mean per sand/cement mix, or per amount of cement added to the mix. The former means I'll need gallons of the stuff?!

Thanks!

Posted: **Mon Aug 27, 2012 8:10 pm**

i just put about 100ml in per mix with the water
so far that has worked good for me especially on steps and overhangs
LLL

Posted: **Mon Aug 27, 2012 9:55 pm**

2.5L is way over the top. As LLL says a much smaller amount does the job.

The Brew Cabin

Use of sbr