[Mti50]

I was sweeping my deck and noticed my patio door sill just didn't look right. I stuck my finger on it and it was soft and spongy. I quickly discovered this rot and only picked away what I could with my fingers. I think it goes up the brick mold an additional 2-3 inches and down the sill another 3 inches. I didn't have time to get the brick mold off yet or get out the tools. I still need to investigate what's causing the rot. I'm contemplating ways on how to repair the sill other than epoxy filler. I'd prefer to replace it but is that going to require me taking out the patio door? Any tips are appreciated. Thanks

 

[Mti50]

The photo is of the bottom left corner of the patio door on the side that doesn't open.

 

[de-nagorg]

That's usually a sign of excess moisture standing for a long time.

Do you have snow build-up there a lot?

And there might be more damage to your ledger and rim joist assembly.

You need to investigate it deeper, and I wish you GOOD LUCK.


ED

 

[joecaption]

Another classic case of someone not following building 101 rules.
In your area that deck should have been built from 6 to 7" lower then the door opening to prevent water from getting in and snow building up against the threshold.
Decking should never be tight to the siding to allow for drainage.
Replacing the old wooden brick molding with PVC molding will stop that part from rotting but not all the other hidden damage under and around the door.

 

[Mti50]

Don't even get me started on how bad this deck was built. We bought this house 4 years ago and the previous homeowner did a lot of his own work to the house including building this deck. There is so much wrong with it that eventually I'm taking it down. It's been a constant battle to find what the previous home owner did and then fix it because it's all wrong. He put in this sliding patio door himself according to my neighbors and of course it's wrong I knew right away it wasn't flashed properly and there is excessive caulk around the brick mold. I will try and find the time to in investigate it more today. I briefly looked at it this morning again and I'm afraid the moisture might be behind the siding too.

 

[Windows on Wash]

Joe is right although most don't want to step down 6" to the deck.

Could have certainly been mitigated with proper flashing and sill pan details as well as some alternative materials selections.