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Project Padma – A House that is ALL Green

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Material use

  • Mostly local material procured from less that 500km radius to reduce its carbon foot print and are recyclable
  • Reuse of wood, furniture, stone and steel from old houses
  • Fewer manufactured products are used such as glass, kitchen, bath and light fittings
  • All appliances are energy efficient such as BEE 5 Star; combination of LED & CFL bulbs are used to further save on energy
  • Many walls are left in natural state; plastered surfaces has non VOC paints for best indoor air quality
  • Least amount of machineries/automations are used while construction; mainly local artisans were employed to hand craft.
  • Bee wax as a coat of polish for wooden doors and windows
  • All walls are load bearing and there are no concrete columns for the house.
  • Use of traditional methods of flooring, cladding of walls such as oxide, slates and stones instead of vitrified/ceramic tiles

Passive cooling techniques

  • Laterite stone walls for the south side and random rubble stone work on the west side with double layer of stones to reduce heat penetration through the wall
  • Filler slab (hollow clay tile) for the concrete roof to reduce the heat and noise penetration through the roof. This also reduces the amount of concrete poured onto the roof
  • Higher ceiling 12ft ensures cooler air is available in living space
  • Tall & Wide windows for enough light and ventilation
  • Lesser built up area (25% of plot size)to allow air circulation around the house and space for plants
  • Wider ventilation below ceiling in the first floor & skylight for hot air to escape
  • Central courtyard for indoor plants , light and ventilation

Harnessing Solar power

  • 2200 watts of solar PV power system installed to power all lights , fans , computers , TV’s etc. ( except pump & washing machine) to provide uninterrupted power for three days. Solar panels cover the entire roof top of master bedroom thus reducing heat. No separate UPS or Generator set is installed.
  • Two 150lt solar water heaters cascaded to provide continuous supply of hot water

Rain water harvesting: Padma has an underground sump of 20,000lt. The house is designed with passages in the terrace for collecting rain water from conventional and flat roofs, filtered and stored in the sump. Water from the sump is pumped up via a 100 micron filter and water softener to 2000 litres of over head storage tank. All the requirement of water for the house is from this source only. Initial five minutes of rain water is diverted to a recharge well, as it has bird droppings and other organic matters. No paved surfaces are provided inside compound walls to enable capture of all the rain water and recharge the ground.

Grey water reuse: Water used for bathing, cleaning and washing gets accumulated in a large collection tank from which grey water percolates to the garden area behind the house. Over 300 trees are planted to avail of carbon credit. No water goes into the public drain system at all.

Waste disposal: The house has one composting pit to handle all bio waste coming out of kitchen and garden. All plastics and paper will be sent to local recycling vendors.

Furniture: Most furniture is from the old collection of the owners themselves. A few are sourced from old furniture shops and restored by local craftsmen. The rest were made at the site using old teak wood procured from Bangalore’s Bamboo Bazaar.

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