Doing a bathroom remodel can go smoothly or it can be a total disaster. Most remodels people do for themselves lie somewhere in between the two. It is easy to have problems with a bathroom remodel when it is not something you do on a regular basis. Your mind is just not geared to thinking about all the factors that go into reworking a bathroom.
Measuring
There are several cases where poor measuring can be disastrous in doing a bathroom remodel. Your fixtures need to fit. You know this, but you may not remember to take every necessary measurement. Some people get as far as starting to install their toilet before they realize that the measurement from drain to wall is off. The toilet will not fit without moving the drain, so that must be done before the bathroom remodel can be finished.
Some oversized fixtures will not fit in the space you have for them if you have not measured correctly. You may have designed the entire bathroom remodel around the concept of a certain fixture, only to find out that it does not fit. Some fixtures may not even fit through the bathroom door. The whole operation will come to a halt while you decide how to change your plan.
Certain materials must be bought in a piece and must be bought in the right size of piece. If you bought a piece of linoleum for your bathroom it would need to fit perfectly. A disaster would be if you measured incorrectly and bought a piece that was too small. The piece would be worthless in covering the floor for the bathroom remodel, and you would need to buy something else.
An expert in bathroom remodels will make sure that all the fixtures fit and that all the measurements for the bathroom are correct. If something does not fit together the way you wish it to, the professional remodeler will know that fact ahead of time and help you alter your plans.
Plumbing
If you do not work on plumbing often, you might have trouble installing the plumbing. No matter what kind of plumbing you use, you might have trouble with leaks if you are not skilled in installation of pipes. This is a major problem if you are using copper pipes and do not have experience doing them. If the pipes are installed incorrectly, you might get air in them which will lead to rattling pipes.
Another problem is that you might have problems with your drains if they are not plumbed correctly. A stinky bathroom sink drain would be something of a disaster. Someone who does plumbing as a part of their everyday job would know to use a P-trap to keep the smell from rising up through the drain and into the room.
Mold
There is nothing worse in doing a bathroom remodel than thinking you have done a good job, and then having mold show up in your new bathroom. If you hire a home remodeling company, they will make sure that green-board is used rather than plain wallboard. They will make sure that walls behind shower tiles are watertight. They will seal all areas where mold could possibly accumulate otherwise.
Any one of these disasters may be possible to divert when you do your own bathroom remodel. The problem lies in doing the entire job without slipping up on one aspect of the work. You do not do remodeling work every day, so you should not be expected to complete it without a hitch. However, a remodeling company can finish your bathroom remodel quickly and easily.