It is a common misconception that natural buildings are weak or "temporary / kaccha" structures. On the contrary, when designed well and according to the local context, strength and durability of natural buildings is much more than conventional RCC buildings.
There are many reasons for this thought being widespread today - aggressive advertising and brainwashing by the modern construction lobby being one of them. One does not need to look beyond our rich architectural heritage to disprove this myth - which are legacies in mud, lime and stone which have stood the test of time. that too, not in any laboratory but in the real world.
It is important to know that designing naturally is not merely substituting modern materials with eco-friendly materials. One needs to understand the qualities and limitations of the materials and respect the same while designing. For example, It is rightly said how any mud building requires a well designed "hat"(roof) and boots (foundation" to protect it from the elements. Once this is done, the structure will surely last for generations.
Also, studies have shown how cement retains moisture and causes damage to the structural masonry blocks. On the other hand, mud and lime are breathable and thus protect the masonry blocks.
Another myth is that natural buildings are high on maintenance. There are many ways to look at this “problem”. We must begin by questioning what is “maintenance”. While purely mud buildings may require human interface more often, it is easier to maintain them ourselves as opposed to relying on specialized labour from the city.
Traditionally, maintenance of these buildings was ingrained in the socio-cultural life of the villagers; one didn’t need to specially “maintain” them. Festivals and rituals developed around these practices.
Having said that, it is also possible to make natural buildings “maintenance-free” in the modern, urban sense of the term. Using more of lime based finishes or treating mud finishes using sealants are a few ways of doing so.
This idea of a natural building is based on a farmer’s house in a village, which is in fact not usually planned specifically to be well lit and ventilated. One must understand that the function of these houses was purely as a shelter to rest at night, and to escape the afternoon sun. Therefore, for a farmer after a hard day’s work, it may be more important to rest in a thick walled thermally insulated dark mud home, than one with large openings and ample views of the exteriors.
The latter may appeal more to us city dwellers, who have a more sedentary lifestyle. So it is important to not associate these qualities as the limitations of the material itself. Well lit and ventilated homes are possible, and are being built all around the world today.
While designing homes, we give the utmost importance to natural light and ventilation strategies and also passive ways of cooling / heating the house.
While speaking of natural buildings, it is important to bust one more myth that is slightly of another nature. One may also tend to over-romanticize everything about tradition without questioning the same. We believe this is fundamentally wrong.
While it is necessary to appreciate the benefits, we must also bring down certain aspects of traditional / vernacular architecture that we observe. For example, women and lower castes were considered unequal to their male or higher caste counterparts. This lead to certain spaces such as the kitchens, temples, toilets and sewerage systems to be designed in a particular way. It is important to look at these spaces with a progressive lens now, instead of blindly aping them just because they are tradition. One must analyze every aspect critically before deciding to utilize it as relevant, or discard it as obsolete.
Vastu shastra, for example, is a set of guidelines that have developed over a long time for a certain climatic condition. Therefore most of the concepts themselves are logic and not mere superstition. However, most people unfortunately have picked up rituals and tried to replicate without thought to context. We are against this fundamentally. The "Vastu shastra" of each location must be unique and a direct result of physical, cultural and climatological contexts.
Costing of a project depends on many factors like location of site, material and labour rates and availability, level of finishing desired (eg mud flooring / terracotta tiles / regular tiles / plaster / paints etc), technology used for construction (only mud, brick + mud, stone + mud, brick + stone + lime etc). Also, it will vary according to design (whether it is only ground floor, ground + 1, height of walls, roof design etc). It will also vary further according to choice in roofing materials (only clay tile/ double clay tile for sealing roof / waterproof roof etc). It depends on what level of finishing is desired. So it is very difficult to give any estimate without knowing the details.
Best way to reduce the costs (economically as well as ecologically) is by reducing your builtup area. Quite simply, the lesser you build, lesser space, time, energy and money you use.
One must also understand that while most raw materials used for natural buildings is cheaper than modern construction materials, more quantity of the same is required (for example, for a thicker wall). Also, costs can be saved if materials from site can be used rather than buying from outside. (Eg -mud from foundations used to build walls)
Broadly, natural construction is more labour intensive as compared to conventional systems. It can take longer to build, with sometimes specifically skilled labour hired for specific works. So one can save a lot of material costs, but might end up spending more on labour. In a way, it is a good problem to have - so that one respects the natural materials and the local skilled involved are incentivised.
Another important factor is the time you are willing to let the construction take - simply put you can save more costs by investing in more time. Also, it is possible to build your house yourself - which saves a lot of labour costs.
By rule of thumb, it is safe to assume that one can save upto 10-15% of costs as compared to a conventional RCC building. However, one must compare within a broad typology of buildings (Eg - self built, built by local contractors without an architect, designed by architects with multiple consultants etc)
We have built structures within a wide range of Rs. 1200 to Rs. 3500 per sq.ft. till date.
Cement-free eco homes cause least amount of damage to the environment, hence they are eco-friendly.
Besides sustainability, they have added health benefits too. We use all natural resources with minimum processing. We tend to avoid chemically processed materials like paints, polishes etc but opt for natural alternatives. This prevents respiratory disorders and promotes a healthy lifestyle.
Besides, these homes are breathable, owing to materials such as mud and lime that are used to build them. They have higher thermal comfort and therefore require lesser energy as you do not need to use Ac’s or coolers. In summers, the homes behave like an earthen pot. The mud or lime absorbs moisture early in the morning and lets it out in the afternoon, therefore cooling due to evaporation. Conversely, in winters, the walls trap heat in the day and let it inside the house at night, maintaining ambient temperatures inside.
Also, we opt for local labour to build these houses. This helps the local village economy and generates local jobs. Crafts that flourished during times when the “Baara Balutdaar” system worked in the villages – are dying out today. We see skilled labour like stone breakers, potters, blacksmiths, carpenters etc leave the villages and undertake unskilled menial jobs in the city for a livelihood. In the process, these crafts are getting extinct and replaced by the standardization that is a part and parcel of the new cement homes.
Time taken to build a natural building, like the costs, is difficult to generalise. It depends on many factors like size of the structure, number of floors, design and special details, labour availability and pace of work, site conditions, climate etc.
To get a better understanding, let us take an example of a medium sized home (up to 2000 sq.ft. in built-up area) on a relatively flat site, somewhere around Pune, Maharashtra. Typically, it would take 3-4 months to make multiple design options, deliberate and arrive on a final design, make detailed drawings, models, quantities etc and be ready for starting construction. Care must be taken to start the construction at the end of the monsoons, which is around September to October near Pune. Having started in October, we aim to finish the civil work (wall, roof and external work) before the onset of the next monsoon (that is, before May next year). Finishing, depending on what techniques and materials one chooses, may take anywhere from 2 to 6 months more for completion. So, overall it shall take a year and a half from conception to finishing the house.
This timeline will change with the above mentioned variables.
We offer our services as an architectural consultancy. We do not take up turnkey projects; the difference being that all construction related transactions happen directly between the client and the concerned agencies, without us being mediators. Our role is more like that of a facilitator, who can suggest materials, techniques, appointment of consultants etc to the Client, but the ultimate decision being the latter's.
We offer the following services -
1. Design + on site assistance
This is primarily for projects based in Maharashtra, at a convenient distance from Pune, where we are based. We do the entire design process, make detailed drawings and models, help in appointing the masons / contractors, make periodic inspections on site and advice on the construction execution. Usually, this entails up to 3-4 site visits per month, as per the stage of work on site.
2. Design only
For projects that are far away, or in case our project list is full for design + execution, we can take up the designing of your project, and provide you with detailed drawings, 3d models, bill of quantities, specifications and instructions for the execution. Remote assistance in emergency during construction phase can also be arrange via call / mail / video call.
If you are thinking of getting your projects designed by us and executing yourself, please note that the most important prerequisite is a team of masons / contractor / local architect / supervisor being on board - someone who you can trust completely to follow all instructions and get the project executed.
3. Consultancy
If you already have the drawings ready, but wish to introduce some natural elements to your project, we may help you in the capacity of material / technology consultants. In this case, we shall suggest some changes to an existing plan according to your requirements, give you detailed instructions for execution. The architect and the executing agency can be someone else.
4. On-site training for labour
In case you wish to get the house built yourself, you can just have us come on your site to train your masons to build naturally. This shall be a one / two day intensive on site training programme that can help you introduce natural elements to your design.
It gives us great happiness seeing that every year, we get exponentially more number of project enquiries. However, we have to take up only about 6-7 design+build projects every year. With a heavy heart, we are forced to ask many of our prospective clients to wait till the next year if possible, or approach another agency for their project.
The reason behind this is our way of working. We prefer to give personal attention and dedicate enough time to every project we undertake. We also believe in working with a small team, forging long term relationships with the team members as well as with the clients. So, delegating our work to others is not an option!
Due to this, we have to set a limit depending on how many sites can we physically visit every week, once construction starts.