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Yes, you should screw your flange to the subfloor, including cement. The best way to get this done is to predrill holes into the concrete using a hammer drill and a ¼-inch concrete bit. Be careful when you’re ready to bolt your flange down, as you can accidentally crack it. You can avoid this issue by not installing the screws too deep. Or, you can opt for a flange with a stainless steel ring so you don’t have to worry about cracking the plastic.

A running toilet is not a plumbing emergency, but you will want to try some DIY fixes or call in a plumber to prevent wasting gallons of water. The three most common causes of a running toilet are a broken or dirty flapper, an incorrectly sized chain between the flush lever and flapper, or a float that is out of position.

Adding another bathroom isn’t the most complicated project you can undertake, but it’s in the top 5%. Anything involving plumbing and electrical work should be handed off to a pro, and adding a half bath involves both. A contractor may charge $70 to $120 an hour for labor, but chances are they can work much faster and more accurately than a DIYer.

The cost to install a new toilet typically runs from $225 to $530. This doesn’t include the price of the toilet itself, which can cost $90 to $1,500 depending on the model and features you choose. You can save money if you choose to install a toilet yourself. However, you might want to hire a pro for this project.

"Due to the many complexities of replacing a toilet flange, it is typically a job best left to the pros," says Jeff Botelho, Angi Expert Review Board member and plumber. "Many times it isn't as simple and straightforward as 'pop off the old one and pop on a new one' because the flange is either glued on (PVC/ABS), soldered on (brass/copper), or caulked in place with a lead & oakum joint (cast iron) and none of these things can be easily reversed without years of training and repetitive practice."