Is Putty Required for Exterior Walls?

Before getting my exterior painted, I got in touch with a painter and asked him is putty required for exterior walls. The painter told me that it's not necessary to use putty on the exterior walls unless there are any small cracks or pores in the walls. I asked him to come by and check if my exterior walls need putty or not.  

Can We Apply Putty on Exterior Wall?

The painter came by and checked the exterior walls of my house, and after that, he informed me that there were a few cracks present there. Here are the steps that he followed to apply putty on my exterior walls. 

• He started by removing all the loosely adhering materials, like dirt, dust, etc.

• Next, he used a hose spray to moisten the wall before applying the putty.

• After that, he mixed the putty with water to make a paste and then left it for a few minutes. 

• Following that, he started applying the putty very gently with a putty blade. 

• After applying the putty, he waited for 3 - 4 hours to apply the next coat. 

This is what he told me when I asked him can we apply wall putty in exterior wall or not. I hope this helps. 

Hi Pritam, I saw you asking is putty good for exterior walls, and would like to answer you. I can say that it is not mandatory to apply putty over the exterior walls, but you should. 

This is because there are several advantages to applying wall putty. Let me tell you about those below.

What are the Benefits of Putty on Exterior Walls?

1. Due to its lower property of binding with water, it has the structure to provide brilliant strength and adhesion. This thus secures your walls against corrosion.

2. If you use a waterproof wall putty, you won’t have to worry about water leakage in the walls. 

3. With wall putty, the surface of your walls will become smooth. Before you paint, the surface of your wall will even out.

4. Your exterior walls will be protected against environmental elements like stains, mould and cracks.

This is all from my side. I hope you now know is putty good for exterior walls.

Everyone wants to enhance their walls so that it can have a good look and let the color on it reflect as much as possible. A smooth surface looks way better than a rough one and that is why interior as well exterior wall putty are widely used nowadays. Putty helps to make the surface smooth and also helps in filling the small cracks or pores on the walls.

Putty is not compulsory but if you witness small cracks or pores present on the walls, you must go for internal or external wall putty. In fact, most putty is waterproof as well which helps in restricting your wall from getting damaged easily. This is a great method to protect your walls and make them even more long-lasting. If you are yet to apply the putty on your walls, I will advise you to go for both internal and external wall putty and be sure that they are going to look like new even after several years.

Primer coat is not necessary but if you have applied acrylic wall putty or even cement-based putty, primer coat is recommended. In fact, to get best results, a primer coat before and after wall putty will be great.

You cannot renovate your building every year, so it is better to go for internal and external wall putty and get assured that you do not need to spend money over your walls for a long time.

Read More: