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304, 3rd Floor, Vardhman Airport plaza, Plot No. 12 Sector-06, Dwarka New Delhi, India – 110075
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+91-9818700448, 9999292033
Thermographic Survey
A thermal imaging survey of building fabric identifies where air leaks in or out of buildings and shows thermal insulation defects. The main benefits of a thermographic survey are:
- quick, non-disruptive inspection
- results easily shown in pictures
- show compliance with specification
- get sustainability assessment credits such as BREEAM
- resolve arguments with sub-contractors as to where faults are
- can be used to show the effectiveness of heating and cooling installations
The thermal image, which is effectively a picture of thousands of surface temperature measurements, makes it easy to see where insulation is missing or air is leaking in or out of a building or after fabric failures such as thermal bridges and damp penetration.
Any object that is not generating or absorbing heat will tend towards the surrounding air temperature, so cold air leaking into a building will show as cold patches on the wall, floor or ceiling. Conversely, warm air leaking from a building will cause warm patches on the outside wall or roof. Thermal imaging surveys alone can be used as a quick method of finding air leaks in a building structure, and can be used alongside airtightness testing which will quantify the leaks.
Conventional Brick Bat And China Mosaic
Brick bat coba is a method to provide insulation for thermal comfort and waterproofing treatment to prevent leakage of water in case of RCC roofs. This is one of the oldest methods of waterproofing which was adopted by many when we moved towards flat roof construction. Once laid, brick bat coba can last at least 15 years if done by skillful applicators. This method was also preferred because of its efficiency in keeping the interiors cool.
This method involves laying lightweight mortar on the roof and spreading it to give gentle slopes for draining away the rainwater immediately. Before laying brick bats having an average thickness of about 110 mm, about 70 mm near rain water pipe and 150 mm at ridge are soaked overnight in water. The gaps between the brick bats are generally kept between 15 and 20 mm. These gaps are filled with cement sand mortar, (in 1:4 ratio), admixed with waterproofing chemicals. As an alternative, some embed broken tile or ceramic pieces in the plastic mortar which is often called china mosaic.