GARDZ High Performance Sealer is a unique water-base sealer for porous and potential problem surfaces. It is formulated to deeply penetrate and dry to a hard, moisture resistant film that seals and binds down porous, chalky and crumbling surfaces, paints and texture finishes.
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Customer reviews
The reviews are displayed in chronological order, with the most relevant reviews displayed first.
Anonymous - carluke (GB)
17 October 2018
Purchase date: 03/10/2018
Used this product to stabilise damaged drywall (damaged previously by scrapping wallpaper) before applying filler and then painting. Excellent product.
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Anonymous - St. Austell (GB)
29 October 2016
Purchase date: 14/09/2016
Zinsser products generally really good. Used the zinsser gardz to seal ceiling in an ensuite. Paint doesn't seem to be peeling at present but only had a month to evaluate product.
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Advice from
Paint, primer and undercoat buying guide
Need a fresh lick of paint, but worried about damaged, porous or damp walls? To ensure you get a beautiful finish, there's only on thing for it: an undercoat! Etching primer, plasterboard or specialized wet-wall underlay: the "prime" solution for a good finish and an affordable result!