cob house : Best guide to build a cob house (2 DIY)

Guide to build a cob house

Guide to build a cob house

Cob houses give you an organic feel as they are made up of sand, straw, clay, and water, all-natural ingredients collectively called a cob. If all ingredients are in good proportion, you will have an n amazing house build in front of you. Earthen homes are not new to the world, but cob houses have several additional benefits over them. The use of natural materials to build something has given the world a solution to several energy production and consumption issues. Cob is an environmentally friendly material for building a house, so you do not have to worry about anything.

Guide to build a cob house

Guide to build a cob house

Why build a cob house?

As it is mentioned above, it is made up of natural material, so we are helping our environment. It is beneficial in several other ways. Let’s have a look at some of the benefits of cob house construction that will urge you to build one for yourself;

A long time investment

If you can manage to provide it protection against rain, it can be a long time investment. A strong and good quality roof can protect walls from adverse effects of rain. If you see weather effects on the house, you can apply a fresh layer of cob, and it will be good as new.

A budget-friendly option

The building of a cob house is an extremely budget friend. The materials you need for its construction can be found on the land where you want to build it. In case materials are not available there you can buy them at very low prices.

A fire-resistant shelter

As the house is made up of sand and clay, so you don’t have to worry about forest fires. It is an excellent option for areas that are known for extreme weather conditions or wildfires.

A healthy home

A cob house builds a healthy environment around you, and air quality is good. The only thing you need to take care of is moisture levels. Cob house takes a lot of time to get dry; it can take months to years. You have to wait for about 1-2 years until it is completely dried.

A cozy place

One other best thing about cob houses is that they are so cozy and comfortable. You will love to spend in your cob house rather than your normal house.

Why build a cob house?

Why build a cob house?


How to build a cob house?

There are so many things to adore about cob houses. They are comfy, healthy, fire-resistant, and budget-friendly, so building a cob house completely worth it. But how to make a cob house? Well, it is not that difficult you can build it on your own or with your friends; if you are not interested, you can also take help from professionals. If you want to build one, we are here to help you with it. So let’s get started:

Mixing cob in the right proportion

Mixing cob in the right proportion is the first and foremost step in constructing a cob building. You need two parts of clay and one part sand. Concentration can vary depending on the condition or source of these two materials. Moreover, you will need water and sprinkling of straw. Mix all of these ingredients, for quick results, use bare feet for mixing. After mixing, it should not look like slump but should hold.

Build a solid foundation

A house is not a long time investment without a sound foundation, and for cob, the house foundation must be very strong. It is because cob walls are thick, and the foundation will have to bear a lot of weight. So, find a clear site and dig down 2 to 3 feet use quality materials to build the base also consider water flow so that drainage of water is easy.

Build thick cob walls

Cob walls are very thick, especially at the bottom (24 inches), and become slightly thinner at the top (around 18 inches). At a time, you can only build 2 to 3 feet wall vertically. After this, you have to leave it for drying and setting.

Build doors and windows

You can absolutely have windows and doors in a cob house. All you need is a header larger than the span. The header can be a thick piece of wood that you have to place above span on the wall. It should be extended about a foot on both sides of the span so that weight is transferred to the wall

Build stairs and shelves

Building stairs is easy with cob; you can turn it the way you want. You can also build shelves in cob walls; it is the time when you creatively use your artistic skills. You can also have wood stoves and fireplaces if you don’t want everything to be made up of cob.

How to build a cob house?

How to build a cob house?

Give your walls and floors the final touch.

Now is the time to give your walls final touch and seal them, you can use plasters, whitewashes, and finished mud layers to completely seal the walls. It will be better to paint your walls in an artistic way to give them a beautiful touch.

After completing the walls, you have to deal with the floors. There are several ways to seal the floors. For cob houses finished, the waxed floor is the best option as it enhances the interior and gives your bare feet smooth and satisfying touch.


Cob houses are dream houses with no harmful effects on the environment. It is clearly a long time investment. If you do not know anything about how to build a cob house, this guide will for sure prove helpful for you. But directly building a cob house will be tough, so I would suggest you start with smaller projects like building a cob wall around your garden or building a cob oven. You can practice on handling cob mixture while doing these smaller projects and can learn from your mistake. Once you are an expert in these projects, you can start building your own dream cob house.