I bought the house I'm in about 4 years ago. It has a back patio that has been converted to a sunroom. The house is about 6 inches higher than ground level, and you step down a single step into the sunroom which is at ground level. The builders of the room put the studs directly onto the ground, then put wood paneling up on the outside, did their insulation and sheetrock. The whole thing is horrible. There are 4 windows on this tiny room all with a western exposure, afternoons are miserably hot. the house is stone of random sizes and so the point where the room butts up to the house there are small air gaps between the wall formed of the mortar gaps between the stones. In exceptionally hard rains sometimes water will run underneath the wall though its small amounts and very rare, perhaps once a year. I recently pulled some of the wood paneling out and discovered that the studs have turned into wood "pudding" I'm planning on tearing all 3 walls down and starting from scratch with some french doors, and only 2 windows that are smaller. My main problems are I can't afford to redo the slab to allow better drainage. So #1 How do I keep my studs from rotting... can I put some sort of composite spacer in there.... or some kind of weatherproof flashing, and if so will that help prevent the water from seeping in at times. #2 What method should I use to interface the flat ends of these walls to the random face of the house. Any info any of you have would help a great deal.

We have a 1920s home that has undergone some shoddy stucco work over the years, particularly when windows were replaced and they patched up the stucco. It is totally uneven. We want to even out the stucco/appearance of the exterior prior to painting. What is the easiest and cheapest way to do this?