So as a result of reading this forum, following up on advice I read here and watching Youtube videos, I have successfully built a heath inside an alcove. I built the plinth and tiled it. First tiling job I have ever done. I chose an Isle Royal and it is burning away nicely as I type. I could not have done this without this forum. I do not actually need heat shields from a clearance point of view, but am thinking of building shields to enhance the convection. One of the videos I watch said that heat shields must be fixed to the wall. I want to build a free standing black steel frame with a sheet of copper stretched over it. When I read up on Canadian wood stove regulations, it mentions spacers, but does not actually say the shields must be fixed to the wall.. Does anyone know if free standing convection shields are acceptable?