This structure was built in 2014, and some water damage was found in the shop space beneath the deck. The old deck was removed because of damage from bad drainage.
Underneath, damage to the roof and framing was also discovered. After repairing the framing and the roof, the plan is to apply liquid waterproofing, then another
layer of waterproof membrane, then a new composite deck. Several composite deck products were found that have integrated water channels to keep most of the water
from even reaching the membrane underneath. Repairs to the junctions at the stairs and repairing water ingress routes near the door are also going to be done.
2024-05-01 13
Measurements
measurements
measurements
measurements
measurements
Lots of debris has fallen through the gaps, causing bad drainage.
Detail of rot in a sleeper
rot in another sleeper
The roof is sloped very slightly for drainage, but the debris has kept that from being very effective.
Here, a screw that was too long was used, going through the sleeper into the waterproof membrane.
More sleeper damage
Extensive rot here
Debris and rot
Finally decided the whole deck needed to be removed and replaced
Sweeping up all the debris. It was a lot!
All swept, ready for cleaning.
First step is to wet it and scrub with a broom.
ready for scrubbing
Cleaning reveals one path for water ingress.
Scrubbing almost done
The "oh crap" moment. Cleaning reveals a soft spot near the door.
Detail of flashing around the stairs
Scraping up the window seal that was used around the flashing and under each sleeper.
The original deck had window seal under each sleeper for additional protection of the membrane.
Cutting away the membrane around the soft spot reveals a big issue.
There are actually two water damaged areas
Detail of second water damaged area
Detail of larger water damaged area
The OSB roof came apart in my fingers
After cutting away the OSB to undamaged wood, spray-in insulation is revealed.
removing the insulation
more insulation removal
Damaged area mostly cleaned up.
detail of damage to LVL beam
LVL beam damage
beam damage
After a hard rain.
Water on the floor after a hard rain
water on the floor after a hard rain
water on the floor after a hard rain
Water in the ceiling after a hard rain
This whole wall will need to be redone
Used a ZipLevel to measure relative elevations and measure slope for drainage
OSB is 3/4" thick
More damage detected inside near bottom of wall.
I noticed the drywall was soft here, started investigating.
Fairly dry up top
Farter down, signs of insects.
Water marks down the inside of the drywall.
Water damage to masonite
All opened up and insulation removed
Extensive debris buildup at the blocking
Masonite is completely destroyed
The double stud here is completely gone at the bottom, as is the next regular stud.
Baseboard is square rubber trim to go around curve.
Mold on back of baseboard
mold at blocking
Clean margins here. Decided to open the drywall to the next stud.
Clean and dry here
Mostly dry at the top - some water marks in ceiling
Another overview shot
Yuck
Continuing to dig out the rot in this corner.
Hard to see, but there is rot along the back of the studs
rot at the back
rot at back
Another view showing rot at the back
Digging out more dirt and some spray in insulation
Pulled out the single stud - water and insect damage all along the back side
After taking out the double stud
more damage to structure
This is going to be difficult to repair
Documenting the wires to the switch before disconnecting
wiring
Dirty rotten studs!
OSB sheathing here completely rotted
More framing damage
Ending cleanup for the day.
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