Replies

1. 
   unclemike42 | May 31, 2020 08:15am | #1

   Good decision to re-evaluate when you opened it up. I trust you have actually measured the boards. photo aspect ratio makes the photo look like the cantilevered joist are not 4x 10.

   your drawing labels the first floor wall top plate as bottom plate. If your drawing is accurate, and you need to replace this, be careful, and build a temporary support to hold up the second floor while you replace this structural member.

   based on the photo, I would want to pull some of the outside siding to look at the second floor wall frame elements, and understand the extent of the water damage.

1. 
   SJGabriel | May 31, 2020 03:39pm | #4

   Hi UncleMike42,

   I pulled some siding out and took a picture of the wall. Rotting seems like a stop where the red lines are. Can you take a look and tell me what you think? Also, it seems like it will take me a while to fix it. What should I use to cover the fixing area just in case if it rains?

   Thanks for your help

   
1. 
   sawdust_steve | Jun 01, 2020 09:49am | #5

   Looks to me like the rot goes beyond your red lines. Better to remove more siding and be certain of where it stops.

   I've had good success with using ice and water shield (the peel and stick product) as a temporary waterproofing product. You can always screw a 1x3 batten over the leading edge to help it stay in place.

   Also pay special attention to that sliding door. Door thresholds are where the water gets inside the wall assembly. You may want to remove that door and get a sillpan installed.

1. 
   SJGabriel | Jun 01, 2020 12:52pm | #6

   Sawdust_Steve,

   Thank you for your comment. I'm planning to pull out the siding on the side of the sliding door and fix that area too. We will replace the sliding door with French Door once we have the money to do it.

   For the Rim Joist or blocking between cantilever joist, I will build a support wall inside the house and replace the top plates and also install rim joist after I flush Cantilever Joist with Floor Joists like the below picture.
   Do you think I should use pressure-treated wood for top plate and Rim Joist? It seems like also I will need to change window header boards. We are also thinking to put French Door opening to our patio where 2 windows are.

   
2. 
   unclemike42 | Jun 01, 2020 05:21pm | #7

   Looks like a couple new wall studs in there. are these from recent work?

   I do not know where you are, or what your work rythm will be. You can tuck a tarp under a length of 2 x 4 and tack it up. depends on how much you plan to pull out and how far you go.

   I would be tempted to pull more battens/board below. all the water that rotted went someplace.

   this is serious enough that it would be good if you can get a local person to take a look who really understands the process. the first question is how much of those top plates is compromised, and if, indeed they need to be pulled and replaced. ( I guess yes, but would be worth a couple hundred to get an informed second opinion)

   do you have building inspectors where you are?

2. 
   unclemike42 | May 31, 2020 08:20am | #2

   https://builderscalculator.com/framing-calculator/

   Don't forget to allow for subfloor layer as you clean this up.

3. 
   SJGabriel | May 31, 2020 10:04am | #3

   Thank you so much for your comments UncleMike42. I'm thinking to open some siding to see if there is any further damage. Also, I will probably pull some drywall from the ceiling to look inside.