Four factors were taken into account when deciding on the preferred final solution:
1. Amount of mattress used
2. Ease of implementation
3. Adaptability of design
4. Greatest environmental and social impact
As both the coir and wadding served the same purpose in a mattress, technically they both used a significant portion of what Garbologie hasn’t been able to recycle yet. However since Johnson (2013) states that “finding a market for the coir is number one priority for Garbologie right now”, a solution that involved coir held more importance for them.
As insulation is a government regulated industry, there was a lengthy set of standards the product would have to conform to in order to meet health and safety guidelines (Building Code of Australia, 2002). Since this would take time and resources, it is not as practical as marketing the coir as this does not have as many health and safety risks as it is used in open spaces instead of households.
Due to the general nature of both designs they are easily adapted to fit different situations. The wadding can be used to insulate in any area that is affected by sound or heat, not necessarily being restricted to households, but also stereo speakers or the like. Likewise coir can be used in a variety of landscaping situations, from sand dunes to wetlands, by simply changing the method of implementation, from thin mats to a series of rolls depending on the function it needs to serve.
Cheaper insulation would mean that lower socio-economic households could afford to insulate, reducing their heating/cooling energy costs and saving them money in the long run. Using the coir to rehabilitate sand dunes would make both a major social and environmental impact, by keeping seaside ecosystems intact and providing much needed work for the unemployed.
Table 3.1 Design Matrix For Final Design
Insulation ( /10)
Geotextile ( /10)
Amount of Mattress Used
5
5
Ease of Implementation
3
7