I bought multiple 5L tins of the Tudor and Village Green Water Based wood stain, thinking it was better for the environment and myself to avoid solvent/oil fumes/waste/pollution. I applied both in 5 coats after sanding surfaces of newly bought, large pine garden garage shed. Followed all instructions and let each coat sink for an entire week as I could only do it on the weekends. After one winter, the product has dissolved/disappeared in spots completely back down to the wood, no doubt due to the water based nature of it. When complaining to AG Woodcare, I was told explicitely that unless you cover it with a finishing coat (which they conveniently sell) the stain will wear away and isn't okay to be used externally. The instructions online on their own site do not state this at all, it simply says they recommend a cop varnish/oil/etc for "more longevity". Yet their customer service has stated that one "must" put a protective coat or the product won't last. If only they would say this on their website I would have never bought this. I did all this staining in middle of summer 2023, and already April 2024 it's about 40% disappeared. I was further told that the sanding paper I used wasn't correct, even though it was in the number range of what they suggest, I was told that the wood I used was "too smooth" as was a outbuilding kit, and finally that noone has ever had an issue before with their product even though a quick look accross review sites proves this wrong immediately. The worst of this is, is that I use my outbuilding for my own studio and now that so much has worn away I am forced to repurchase the Tudor color to try and quickly patch repair so that I can have photos done for a website. I cannot find any company that sells this specific color. Meanwhile this summer I'm going to have to hire someone to sand the entire building down and start over with another product. I've got 4 other outbuidlings and have stained 3 of them (all wit oil based stain), and never had an issue with these other brands, so based off my expeirence I believe their water based stains specifically are not fit for external use and I've wasted dozens of hours in labor as well as hundreds of pounds. And no help at all from customer service as they can just say anything to absolve themselves from any responsibility and blame it all on me.