The house I'm in has both a downstairs and upstairs bathroom. The downstairs room needs renovating and since the bath is never used I want to get rid of it and make a wetroom instead. Years ago in another house we went with an Impey kit and now I see there are plenty more reasonably priced ones on the market. Are they of comparable quality? I don't think the shower will be getting a huge amount of use so I'm wondering whether to go for a cheaper kit. Does anyone have any recommendations or is it not worth the saving? It's floorboards on 40cm span joists. Thanks.