Daisy's mum Posted April 11, 2008 Share Posted April 11, 2008 Hi all I am going to start my raised beds next week, they are going to be built with 2 courses of therma blok with a decking board "seat" round the top. The plan is that I can sit on the boards to garden as I have dodgy knees and a bad back! We are going to render the outside and then paint them a nice colour. My question is: Should I PVA the inside of the beds before filling to stop any moisture getting into the bloks? or will PVA be toxic for the plants I am going to line the bottoms with weed control fabric. If I cant use PVA what else will do or can I just leave them untreated. Obviously I only have one chance to get this right Julie x Quote Link to comment Share on other sites More sharing options...
Matthew Posted April 11, 2008 Share Posted April 11, 2008 how deep are the beds going to be as weed control fabric also is a root control too.....? Personally I would not line the beds with PVA, one, for the the expense and two, not sure how much of the moisture loss will be that route anyway Quote Link to comment Share on other sites More sharing options...
Daisy's mum Posted April 11, 2008 Author Share Posted April 11, 2008 Thank you for getting back so quickly Mathew I was hoping that someone would say not to bother, though I would have watered down the PVA.!!!! I am hoping that the beds will be "chair" hight so that I can sit comfortably on the edges. I am just worried that if any dampness came through the bloks it will make the render fall off or am I being really dim Julie x Quote Link to comment Share on other sites More sharing options...
eggsentric Posted April 12, 2008 Share Posted April 12, 2008 damp may get to the render unless u use basement tanking additive in render mix. Put dpc between footings and wall, like house walls and line inside walls with a plastic sheet dpm. Quote Link to comment Share on other sites More sharing options...
