Also, the PVC…???

Roof drainage.

Please Please tell me you meant to be that hilarious!? I'm dying.

In the top left corner of the second to last picture you can see the down pipe from the flat roof. The previous owner had them installed and I have it on my radar to move them to the roof.

If you filled any holes you have to put primer on those spots or you will see them when you're done painting. Sanding will not make the paint finish look better, just paint it.

I did. The notch in the frame is cut to a comfortable angle and I just ran the new slab in to the old grove.

Google plywood stains on concrete and you'll get a lot of hits. I found this in the first one: "Extracts from wood may cause yellow or brown stains in concrete. The stains can be removed by treating the concrete with a hypochlorite solution. Household bleach, which is usually about 5 percent sodium hypochlorite, is satisfactory after diluting one part of bleach with four to six parts of water. The stain disappears if the surface is first scrubbed thoroughly with a solution that is one part glycerol in four parts water. Glycerol is flammable and bleach is corrosive to skin. As always, read the warning labels on the chemicals before use."

Definitely remake that pipe out of mahogany before it's too late

That's no fun in the winter

Maybe even worse, an articulated bracket is subject to being moved and wiggled around, which drywall anchors also suck for.

Well; if you want to make a mirror finish you must sand. But I reserve that effort for boats. For walls; sand if it feels rough or “hairy” otherwise just paint nicely and maybe tip off.

craziest thing. I just had a slight toilet clog and used "green gobbler" overnight to eliminate it and treat the pipes (it's non caustic and safe for all pipes )-- all the stains in my toilet were gone as a side effect. I know i sound like a commercial but i was shocked in a good way!

Do a search on pumice stone

I hope you pitched the board slightly downward away from the house so water doesn't pool up in the doorway.

Downspout is my guess, but still…

I'm sorry, your dog has been chewing your rear entrance because his balls got stuck?

This needs a NSFW tag.

https://imgur.com/a/pUXREv8

Posted a pic for better visual

I got a week-old motor oil stain out of new concrete with some oxyclean and some water—may wanna try that if you already have some on hand.

Use a pole sander. It will make it easier for walls. There always seem to be some rou spots that you’ll notice after you paint if you don’t sand.

Pole sander is not a person from Poland who does the work for you!

Citric acid. It's the stuff they sell to clean coffee makers and similar appliances. It is also used in the food industry so you can sometimes (rarely) find the powder/crystals in the seasonings section at Walmart and elsewhere for cheaper than the coffee cleaning stuff. I always get a few pouches whenever I see it because it's not common but very useful for that purpose.

Throw a bucket of water directly in the toilet bowl so it will flush itself out and leave only a shallow water level, so less water in the bowl means more concentrated acid solution. Pour 2-3 table spoons of the stuff and leave it overnight. Next morning, use the toilet brush to finish off the job.

How. High. Do. You. Need. To. Raise. The. Bed?

This, but I recommend something other than Hilti if you want to save some money. There are plenty of alternatives that will do the same thing without the Hilti brand premium you pay $$$.

I fix / restore buildings for a living…Yet I watch /read this stuff on my day off.

You need to use threaded rods and chemical anchor. And drill dep enough because those walls can almost support nothing.

If it were me, now in hindsight, I'd get a new 5-wire to run. I spent hours trying to get a new thermostat working on an old 3 wire setup and gave up on that; was having too much issue trying to bridge pins and stuff. Once the new 5 wire cord arrived I taped it up and pulled it through, connected it to furnace board & thermostat and it was a 20 minute ordeal.