Thank you for a most interesting question. Turbo Concrete Bog differs from Builder’s Bog in two major ways. Concrete Bog is a lot heavier than Builder’s Bog, so if measuring hardener ratio by weight, Builders Bog needs 1 gram red hardener to 40 grams of putty at mid point.

Concrete Bog needs 1 gram white hardener to 50 grams of Concrete Bog.

You can halve or double this amount of hardener paste in each product, depending on how fast you want them to gel and cure, whilst still attaining the right final hardness etc.

By volume, which is how most people will measure the ratio, I suggest to select the quantity you need for the repair, then split this quantity needed into cup sized portions (250 Ml.) on the mixing board, then add the requisite amount of white hardener – in the case of Concrete Bog 1/2 to 2 level teaspoons of hardener. For Builder’s Bog the directions cite a matchbox full which is 30 Ml, so there are about 8 of these in a cupful. Again split into matchbox or cup-sized portions and dose each portion with the amount of red hardener according to the directions.

Then either mix the portions one at a time or mix them all together, and you will have the correct ratio for your repair. This is easier I think than trying to estimate the number of cups or matchboxes in contained in a large quantity.

The red hardener is easy to see when fully mixed and the stripes are all gone.

For concrete Bog you have to be more thorough because we cannot use a coloured hardener and still have concrete-coloured repairs.

I hope this helps. Absolute accuracy is not important since the permissible variation in hardener ratio is formulated to be very large in our product.

Regards,
Stuart Jordan
Managing Director
Chemical Specialties Ltd.
27.10.2016

Thank you SO much for your very informative reply. I will let you know how we go. I appreciate your help very much.

Kind regards
Mary
28.10.2016