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How To Paint Two Rooms With A Common Wall: A Step-By-Step Guide!

When you have a common wall shared between 2 rooms, painting it can be a nightmare. And not doing it properly will leave an unpleasant taste all over the house.

How to paint two rooms with a common wall?

You should decide which theme you want to go to first. You can go for a monochromatic theme or a contrasting theme. First coat the whole wall with primer. You can separate the two rooms with a physical barrier to color the two parts differently.

Now you know what to do! But you might still want to know the description of the process. We’ve got just the thing!

So, let’s jump right in!

Why Is Choosing The Right Color So Important?

When you have a common wall shared between two rooms, this becomes tricky. The two rooms might have different purposes and styles. Also, the lighting may hit the room differently.

But if you choose the perfect method or use a little creativity, this might be better than other rooms in your house. This headache could turn into a wonderful opportunity. That might lead you to want more of these changes in the future!

Themes That You Can Consider

Before choosing the colors, you need to choose a theme by which you want to pick your colors.

You might want to blend the colors, or you might want to keep them totally separate.

Here are some options for you:

1. Separate The Rooms With Clear, Bold Lines

You can add a white distinct straight line where you want the wall to be separated. You might also use zigzag or curved lines. Just let your creativity flourish.

Use some painter’s tape to mark the boundaries of the line. And paint them in a bold color that separates the wall distinctly.

2. Blended Look 

A very pleasing way is to blend the colors in the wall. You can use different shades considering the other 3 walls. 

You can use a sponge, or spray them to get the blended look.

Using wet colors makes the blending job very easy.

3. Physical Barrier

Straight lines or airbrushing might be hard for you. And you want to avoid a mess. Then you can use a physical barrier between the wall sections.

Use a wooden trim from top to the bottom of the wall. And then paint both the sides. As an alternative, you can also use fabric or a drape. Tall furniture, like a bookshelf that is of the height of a wall, also works.

Steps To Follow While Painting Your Wall

Now that you know which way you want to go, you need to know how to do it. So we have organized the points in a step-by-step fashion. 

Here are the steps to follow when you’re painting your wall-

Step-1: Prepare Your Wall

Use painter’s tape to cover the edges of your wall and areas you want to paint. You can sand down the wall with sandpaper if it’s rough.

Use a primer to cover your wall. As you want a smooth surface to paint in. Apply the primer and let it sit for 1 day to dry.

Step-2: Paint The Wall

Take your desired paint and put it in a paint tray. Use a roller brush and dip it in the paint.

We have some suggestions for you about the brushes and tray: 


These tools are our absolute favorite while painting. Do check them out!  

Do an up and down motion and cover the whole wall with paint. You can thin out the paint or use it as it is. Whatever suits you best.

Make sure to use light color paints first. And dark colors later for best results.

Step-3: Finishing Touches

To begin with, check if the paint is consistent all over the wall. If it is thinned out in any place, apply another coat.

Wait until the paint dries properly. If you rush, you might splash paint all over your carpet. This will ruin your whole effort just in a moment.

There you go! These steps will surely make the whole painting experience much better.

Some Tips That Might Make Your Life Easy

You got to know the procedure of how to paint two rooms with a common wall. Now you can start painting your wall. 

Here are some more tips to assist you further:

1. Checking References: 

Search in different magazines or websites for ideas and inspiration. They have a variety of ideas and options to take a hint from. 

Also, you can visit nearby paint stores to see how they match your wall.

2. Match Your Furniture: 

Suppose you matched the colors for the rooms. 

But if they are not coherent with the furniture, it will stick out like a sore thumb. 

That is why, before you decide how you paint, do consider how they will match the furniture.

Because furnishing a house is very important in looks. A harmony between the paint, light, and furniture will make the room elegant.


Question: Can you thin out paint using oil?

Answer: Yes you can. But if your paint is too thin then you might need to coat it twice.. But if you can thin out the right amount then you can save money on paint.

Question: Is using straight brushes better than roller brushes? 

Answer: To paint a large area of walls rollers are better. But when you need to paint tight corners or small spaces you need to use a brush for precision. But using straight brushes for the whole thing will be tiring.

Question: Is sanding necessary for painting?

Answer: If you paint over a painted wall, it’s not needed. But if the wall is totally new then it will not be very smooth. And paint doesn’t sit well on unsmooth surfaces. So sanding is necessary.


There you go! That’s all you needed to know about how to paint two rooms with a common wall.

Now you can explore more about the available themes. And get creative about how you want to decorate your room!

Happy painting!