Is the roof glass like shown on the images? If so, before you do your kitchen here, I would try and talk to someone who has done this. I have a client I am currently working with for their layout. They came to use because the previous owners did exactly what you are suggesting and it was unbearable to be in there in the hotter months/days. The owners did the work then sold it because they didn't like it in the end, and the new owners are now paying me to rip it out and put it back in the existing covered part of the house with the dining room in the glass area, with storage and play area. It's definitely worth looking at before you go ahead with something so major and costly. I think as @Jonathan suggested, I would try and open the space up further, even if it means waiting a little longer for it :) ...best to get it right the first time. Best, Gina

Hi Maria That's a shame, I've worked with fitters in the past that put far too many fixings in which is great when it comes to it being structurally sound but I always feel bad for the people that have to remove it in years to come! In my opinion, if the 3mm is secured on with 'no more nails' and pins then I can't see how it would lose its rigidity. I would put a line of no nails along the surface of each groove (not inside the groove but the top part) then push the cladding onto it until it won't go any further (maybe even use a rubber mallet), then just some small veneer pins up up the edges and in the middle - Make sure the pin heads are buried slightly so you can fill the holes afterwards. The other advantage of 3mm is you can hide the edge of it much easier as you can just sand a bevel onto the edge which hides the joint. You wouldn't need MR MDF here either with it being in a bedroom, once it is painted it is sealed. I have done a similar thing in my bedroom where I clad an existing unit in 6mm MDF (not moisture resistant) and it has stayed in the same condition 6 years later.

What type of material were you thinking of to replace all the uPVC? Not sure whether you would need planning for this as I assume this is your main entrance? I would start by getting quotes from builders to do what you are suggesting. It would look much better with the extended brickwork from a symmetry perspective. Cottage style windows in wood or wood effect in a softer colour could really change the appearance.

Hang on, wait till you get the keys! We need a lot more information before we can help so, many questions….. Which way does it face? The walls and fences surrounding it are high, how much sun does it get? Are you a gardener, do you have time to tend plants or do you want low maintenance? Are you planning to bbq and dine outside? Do you have children or pets?