Sorry for taking ages to reply. We are building a gable conservatory, 3 x 4m in size.
We are a detached house, and are knocking through the dining room to extend and make a family type room. We will only have 2 glazed walls as we are building a full height wall for privacy on one side and the other wall is the existing house wall. W are glazing to ground ie no dwarf walls. The gable roof is like an A frame shape...gives much more headroom and makes the room feel bigger. Yes, it's dearer but looks brilliant, at least on plan anyway haha.
We have one company doing the lot.......everything from design, planning, building, plumbing,joinery and electrics....all under one roof. We went with a trusted local company rather than a big name national.
We are tapping into the heisting plumbing system and adding a full height radiator for heating, plus an electric stove type thing for the days when we don't want to heat the whole house iyswim.
We are having to have major remodelling done at the back of the house for access to the conservatory. We only had a back window rather than patio doors so they are having to be retro fitted. That's been the worst bit so far.
As for cleaning the roof, my dh and a long lance on the kaercher will sort that out!!
We are paying £23k for our extension, not the cheapest quote we had but a company that we know and trust. If you google gable conservatories you will see what they look like......they do have a different look but it suits our modern house.