We bought our house three years ago (built in the 1960s in California. It has a west facing sliding glass door that opens on to an overhanging deck. It has had leakage problems in the past, which caused the prior homeowner to spend $10,000 to repair dry rot under the floor. We have been using silicon sealent to keep the water out with pretty good results. However, the door seems to lack a proper flashing, and in the last storm where wind driven rain blew in from the West we actually had water filling up our door runners, in the house (soaked it up with a towel). We just had a new hardwood floor put in and the prior damage was repaired, so we don't want this to happen again. Any suggestions? A friend suggested replacing the sliding doors with French doors. Another said we should just rip out the whole thing and have it redone. How much would that cost? Thanks.

Sliding Glass Door onto Deck - water leakage

Sliding Glass Door onto Deck - water leakage

Sliding Glass Door onto Deck - water leakage