Tap a small finishing nail at the bottom of the vertical side rails but above the horizontal section, you will tell right away if it hollow or not. The 2 small holes will be low and out of sight until you can fill with wood putty. You can always use the college dorm trick and fill the holes with white toothpaste.

That looks worse than my sons shed. His is rotting where it sits on the concrete pad. Tuff shed brand has an aluminum footing about 6 inches high that may minimize this.

Check your local code. The gas fired gen I have seen are hard piped.

Even if your tile comes on the mesh backing? Doesn’t look like individual tiles.

That’s good. Get some good knee pads.

Use pressure treated lumber for the subframe and price out different decking materials, wood vs composite and the different railing kits.

There are so many utube videos on all aspects of deck building but it will depend on your own confidence and ability to use tools safely.

Saw someone else mention some kind of membrane. Not familiar with that although I have seen Mike Holmes use an orange material that gets thinset to the floor then the tile laid on that.

See if you can stuff some insulation in first than the backer rod. Do you know if there is insulation in the walls??

Looks more like a settlement crack. I would expect to see a perfectly straight line and expansion joint material in the joint. Too many irregularities in the crack to be made on purpose.

You may find the tile will also crack over time if the slab continues to shift.

I would use the wire shelves. Wood will eventually sag.

My son just used a black plastic garbage bag with double stick tape on the window casing. Put it up in the baby’s room to help him sleep.

It’s a metal door frame. A bitch to remove. My friend had this and found the metal frame was install after the flooring was put in.

If you build a simple stand to support the weight of the knives, you can then use silicon to attach it to the tile, avoid the grout joints, to keep it from leaning forward.

Caulk will eventually crack and split. I’m a handyman for 30 years, I give my customers options, pros and cons and let them decide.

I have the qtr round in my home with hard wood floors. I like the look.

What would you recommend?

Use quarter round molding. It will bend to the contour of the floor and when standing, it will look perfect.

Home Depot sells flat aluminum stock that’s perfect for this. Easy to drill through and flat so the tv won’t stick out any more than it has to.