Morning guys, An impregnator ,is only as good as the products you maintain it with , long term.
The guarantee on products, is generally a free bottle if it goes wrong. Others have tech back up to sort problems if they occur and to advise on ongoing maintenance .
Saturation , is not for hours , I saturate the most dense polished granites only for 20-25 minutes . Your saturating the face , to line the cappillaries ,not the whole depth of stone. 2 coats generally, 1 before grouting one after, or screeded floors 2 coats should be fine, depending in porosity and density of product to be impregnated
Alan, the polished gypsum , should not be a problem . Test your chosen impregnator, saturate and remove excess , leave to cure 24 h and water test ( and any other contaminates to determine repelancy , teas coffee oils) please note , your floor will still be prone to acidic damage with any of the above.
Sometimes with this type of screed, solvents can highlight workings in the product or show colour differences , if you find this occurs on test and it is an issue , test a water based product as these most times will not change the colour in your floor. we have stain stop W, stainproof by dry treat as above or Matt stone water based ltp could be tested for this perhaps.
If you have sample cards of the screed , you could send them to me , I can test them with several products (ours lol ) and return to you if you wanted.
