Obviously by now you will probably have established that Radcon #7® is a product with living characteristics and is a water activated material.

 All water based paints and water based acrylic membranes should “NOT” be placed directly over Radcon #7® treated concrete.

 If you are using a water based acrylic membranes for detailing penetrations, strip seals etc, then complete this work first on your concrete structure, allow to cure in full, then proceed with Radcon #7® waterproofing.

It is a commonly held belief that Silicate sealers being highly alkali in nature increase the speed of AAR / ASR concrete deterioration and rightly so.

By comparison Radcon waterproofing stops AAR / ASR concrete expansion totally by stopping water entry critical to this ongoing reaction.

Furthermore long term testing was conducted using Radcon as an admixture by Queensland Department of Main Roads, Australia with reactive aggregates present.

Getting Radcon touch dry prior to the first watering may require air blower units to speed the process.
Also be aware whilst Radcon is non-toxic any overspray in the atmosphere will deplete breathing air, therefore breathing apparatus will be essential in some enclosed applications.

Be 100% sure that any repair mortars “do not” contain waterproofing admixtures such as polymers.

Radcon should absorb into the entire job including the patching material. This cannot occur if manufacturers are supplying mortars with their own water repelling materials contained therein.

Crystal growth mortars such as our Radmyx material are acceptable as they are compatible with Radcon and allow for necessary penetration after curing. This cannot occur where mortars with waterproofing additives exist in such products.

Should Radcon product be frozen it is essential that Radcon is "slowly" warmed to around 5-6 degrees centigrade.
The product should then be stirred thoroughly, and may be applied.
Additionally it should be noted that the warmer the temperature the faster Radcon will react with free calcium in the concrete as water is applied to facilitate the Radcon glass hard amorphous gel reaction.

There are only three known reasons why this could occur.
i)The concrete mix design contained Type F fly ash or volcanic ash causing matrix lock up of calcium by the Pozzolanic reaction. The wrong concrete mix was utilised.
ii)Large cracks were present and the applicator did not tape the underside of cracks during application to ensure product flooding occured inside these cracks. A superficial seal was achieved and such cracks would require underside taping and re-treatment with Radcon.

Yes, but we never recommend relying on Radcon alone as these areas are prone to honeycombing. We may simply have voids, which are too great for Radcon alone to completely fill such areas on every occasion.

Yes, quite often crystal admixtures which have been inappropriately applied above grade continue to form cracks which do not re-seal and continue to leak.

Radcon Formula # 7® can permanently repair such failed sites providing we are working with cementitious concrete mixes.