first coat
First Coat Application
second coat
Second Coat Application
After 1 week
Result after 1 week (Mid-September 2015)
March 2016
Result after 10 months (March 2016)
September 2016
Result after 14 months - end of trial - September 2016



1st coat: Medium viscosity clear liquid with vinegar odour. Needs to be pushed around to cover substrate

2nd coat: Would not adhere. Didn’t take


The algae of Spring disappeared over the summer and other than that, there's no sign at all of the sealant. Completely undetectable.

This is one of the few water-based sealants, so visual enhancement was never likely, but how will it cope with the stains?

Stain Trials:

stain application
Application of stains
stain after 4 hrs
Stains after 4 hours
wash off stain
Wash off stain with proprietary cleaner after 24 hrs
apply mosskiller
Apply mosskiller after wash-off
stain after cleaning
Stain 48 hrs after washing-off mosskiller and cleaning with proprietary cleaner


Yet another shock result. This is a product that's widely used on commercial projects, yet it seems to have offered almost nothing in terms of stain protection.

The best that can be said is that the ink washed away, almost.

A very surprising and disappointing result.

Note: Any apparent variation in colour of the flagstone is due solely to changes in the condition of the natural daylight at the time the photograph was taken.

Other than cropping to exclude extraneous background and adding a drop shadow to the cropped image, there has been NO post-processing of the original photographs.


Weiss Stain Protect is available from:

SteinTec - TuffTrade

Weiss Stain Protect
Weiss Stain Protect

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