How To Install a Bathroom: Step-by-Step Guide

Are you planning to upgrade your bathroom in 2022? Or maybe you are just looking for new ideas on how to spruce up your bathroom? Whichever of the two your reasons are, the solution to achieve what you need and want is the same – renovation. But before you go on with the planning, you must first understand how to install a bathroom.

Learning how to install a bathroom is a good way to have a clear idea of what to expect before, during, and after the renovation project.

Step 1: Identify the Current Specification of the Bathroom

Identifying the current specification of the bathroom has two purposes: the first purpose is each state and territory in Australia has their own renovation regulations and codes. These regulations and codes will dictate whether the homeowners need a building permit or require using a certain type of material.

While the second purpose is to know the exact dimensions of the piping, the proper placement of the plumbing fixtures, and if there are damaged pipes or fixtures that need to be removed or replaced.

Step 2: Plan the overall layout of your bathroom (plumbing fixtures and piping)

After identifying the specifications of the existing bathroom, you need to plan the overall layout or floor plan of the bathroom. This is both for the plumbing fixtures and the piping. If you have no idea how to plan it, the tradie will assist you.

When planning a bathroom layout, you must always think about how you can get the maximum convenience. One good way to achieve this is by strategically dividing the bathroom space into its functions – vanity, shower, toilet, powder room, and walking space. Don’t forget to include a good distance from each plumbing fixture.

Step 3: Preparing the renovation site

Knowing how to install a bathroom and preparing the renovation site can be stressful. The preparation tasks commonly involve the removal of the current plumbing fixtures, wall and floor tiles, drywall, and other obstacles; including cleaning. This is the messiest and noisiest stage of the process because tradespeople sometimes use a jackhammer just to remove old floor tiles.

Step 4: Set up the plumbing and electrical lines

Setting up the plumbing and electrical lines properly is the most important part of this process.

But before the tradie goes through with the setup, they must first check your bathroom renovation plan. This is to check whether you have any changes to make. For example, in your bathroom design, you need to relocate elements like the toilet or shower area. If you do have changes like this, this step is the best time for the tradesman to work on it.

If none, they can start setting up the lines for the main drain, individual drain, vent, supply, and fixtures. Also, the electrical lines in the bathroom.

Step 5: Wall up! And Waterproofing

After setting up all the plumbing and electrical lines, the tradie can start building a cement wall. This wall is a good base for both tiles and paint. So, whichever you choose later you can achieve it. Once the wall is dry, the tradie can proceed with waterproofing.

Waterproofing is an important task because the bathroom is prone to water seepage, mould growth, deterioration, and air quality issues. This waterproofing sealant will help to protect the bathroom from those threats and make the bathroom last longer. Also, this is important because waterproofing is a requirement of Australian Standards (AS 3740).

Step 6: Tiling

Tiling is one of the most time-consuming tasks with bathroom renovation because the tradie needs proper concentration and carefulness to ensure the tiles are lined up according to your design plan.

After laying the tiles successfully, the tradie will clean up the floor and wall to make way for the installation of fixtures.

Step 7: Fixture Installation

The common fixture that goes first is the toilet, followed by the tub, vanity, sink, shower, and all the electrical components. After the installation, the tradie will test it to check if it is working properly or if it leaks.

Upon learning the process of how to install a bathroom, the next factor that every homeowner consider is the bathroom installation cost.

How Much Does Bathroom Installation Cost?

Another reason homeowners are worried about renovating their bathroom is its installation cost. But the truth is, there’s nothing to worry about. Expect to pay bathroom renovation costs ranging from $5,000 to $30,000+ (total renovation). This cost to renovate can still be lessened depending on the work needed.

To give you an idea of how much you have to spend on your bathroom renovation project, here are the factors that can affect the cost of bathroom installation that you (every homeowner) must consider:

  • Bathroom size
  • Bathroom fixtures, fittings, materials, and accessories
  • Tradies fees
  • Other miscellaneous (e.g. permits)

For the tradies fees, you can determine its exact cost once you identify all the tradies you need to complete your bathroom renovation. The common tradespeople that you need for bathroom installation are bathroom builders, plumbers, tilers, painters, electricians, waterproofers, and carpenters. There are times that some homeowners also hire an architect. But it will still be up to you who you want to hire for the job, just make sure they are all licensed and reliable.

If you don’t want to do the calculation manually, you can always search for local bathroom builder companies near your location and ask for their estimation. They will base their estimation of bathroom installation cost on the size of your bathroom and the specification you wanted to add. Once you have gathered all the cost estimates, you can compare them and choose the one that offers the best deal.


Bathroom Installation – FAQs

What Plumbing Is Needed For a Bathroom?

Five water lines must be considered when plumbing a bathroom: a hot and cold line for the sink; a hot and cold line for the bathtub or shower; and a cold line for the toilet. Since every fixture and home are different, you can have a plumber to run the lines for you.

Can You Plumb a Bathroom Yourself?

Unfortunately, installing new plumbing in a bathroom is a difficult DIY project that is often handled by a professional plumber. These people have a complete understanding of plumbing systems and installation methods.


Featured Photo Courtesy of jarmoluk via Pixabay

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