
I have a conservatory as an extra room. We use it as a Dining Room with a third partitioned off as a utility room and dog room.
We thought long and hard whether to have a traditional extention or a conservatory. The extention was going to be far more expensive mainly due to the roof.
So we have a consevatory, but with the windowsils up a lot higher then usual and double french doors. One side wall is all brick. The partition is brick, but topped in granite as are the windowsils. The finishing touch was to plaster all the walls, not leave them as exposed brick. The result is it goes in an oblong along the entire width of the bungalow.
As to the roof, we found this the hardest decision too. We went for Plastic? (I know it's not, but can't remember what it is called) 50mm thick with a blue tinge. I am so pleased we did, firstly it doesn't get so hot and secondly it doesn't show all the bits that fall on it.
In hindsight, a proper roof extention would have cut so much light out of the lounge, which is where it comes off of.
I wish we could have afforded to do it years ago, it has made such a difference.
Little tip: If you go for a hard floor, splash out on the underfloor heating mats. We find in the winter we do not need any additional heating and the tiles are lovely and warm underfoot.
Hope this helps
Sandra
Edited to say: I fully intend mine to last a lot longer then 15 years. Other then the roof it looks like an extention.