We are planning a lot of work to our house next year. Currently it's a 3 bed bungalow with smallish bedrooms, and an old pvc low wall Edwardian conservatory. We are putting on a new roof to give us a master bedroom upstairs ( more than just a loft conversion, the whole roof shape will change so very expensive). Existing downstairs bedroom, dining area and kitchen reconfigured into larger kitchen, utility, and extra bathroom.
The original plan was to replace the existing conservatory with a single story extension to have a dining room. But this is beyond budget now because the roof change will be expensive and we want to do it well. As an alternative we think we might replace the conservatory with a better glazed dwarf wall one with a tiled roof. Have people built one of these recently and can you tell me what the main disadvantages are compared to brick-built extension? It will be north-facing. Current conservatory still too hot in summer. Do the new lightweight tiled roofs make a huge difference?