Valley Drainage

I can't help feeling that the only solution is to tear the garage down and start again. But that seems too extreme, so I tried again to solve the drainage issue of these ridiculously designed roofs. This is Before...my latest work, but after my attempt to cover the earth in asphalt. The roof still leaked with this much asphalt because it didn't drain and the pond slowly penetrated a few nail holes.

Step one was skipped, when I struggled to make a 20 foot long evenly sloping wedge. It involved more math than I care to admit because it goes from a 30 inch wide piece to an 8 inch wide, and each of the three pieces of the wedge had to be centered. It sucks experimenting with money I don't have for these projects but financial stress is the homeowner's default status.

I tried to salvage some of the paper but it was easier to simply cut it so I could put some tar paper, then some ice and water guard (expensive stuff), and the final cap layer of rolled roofing...which I did not affix with nails because that caused the problem to begin with. I used adhesive sealant.

End result, The wedge of OSB, then tar paper, then ice and water guard, then the rolled roofing slipped under neath the older roofing (that sounds easier than it is to do) Then I buttered the seams with adhesive and weighed it down with some stones and bricks that you see on the roof. I knew that once the adhesive cured then the seams would be water tight, but this is no the ideal procedure since it's a clusterfuck of messing with old roofing and working alone on a 20 ft length of rolled roofing. I couldn't manhandle the long rolls of roofing so I ended up with two seams that required real attention since they are the critical aspects. You can also see my butcher job on the neighbor's roof, since I'm doing a patch job and slipping roofing under old roofing that was too delicate to touch and trying to limit the amount of damage.

I feel the lesson of the roof project is still an issue of my attempt to save money by struggling against the grain. The neighbor's roof needed to be torn off to make it easier to build back up again properly, but I did not want to go to that extreme because that would really force me to rebuild my whole roof with a better pitch, rather than this ridiculous mild arch? And I didn't want to do that either. I just want a few years out of this garage before I get extreme so I'm trying to keep the work and material at a minimum since it could be considered throwing good money after bad.

Here's a photo...two different sink drains. The one of the left is the one attached to the roof vent. I don't know the story behind what happened but someone abandoned the drain on the left and attached the sink waste to the drain on the right...or maybe they added the drain on the right through two walls because the left one was plugged. Either way, they didn't provide any venting for the drain on the right. Way to go! So, there was a loud gurgling from both the kitchen sink and the bathroom sink when the water was running because, I gather, the suction was siphoning the water out of the P-trap. Great! So, my demolition revealed what I suspected: no vent. The water just goes directly down into the house drain (which is another mystery that will be investigated one day)  It was a classic case of plumbing 101. Either tie the drain to a vent or... I purchased a basic air admittance valve, and rebuilt the drain to include the AAV.

This might look easy, but the critical thing is to build it with a slight slope down from the P-trap to the final drain pipe. I managed to build it close to perfectly level and the old slip joint connections all dripped, so I have to rebuild them with new pieces instead of being cheap and using the old stuff. Fine. Whatever. I will say that the AAV fixed the gurgling sound. Actually, I don't know how the water drained at all except it siphoned all the water from both traps to create air above it so it could drain. Then I realized the drain that had the vent is basically a direct vent into my sink cabinet, which reeks. So I'll cap it off.