Based on a density of 250kg/m3, do refer to our mix table design for specific design mix.
A 50mm thick Lightherm Screed is being applied onto the roof (Inverted roof system) in accordance with Singapore's BCA stipulated u-value requirement.
Outside Surface, (R0)
25mm thick cement sand screed
50mm thick Lightherm Screed
1.2mm thick Koster 21 waterproofing
150mm thick concrete slab
Inside Surface, (Ri)
Total Resistance (RT) = 1.1287 R (m2K/W)
Conductivity, k (W/mK)
Resistance, R (m2K/W)
- Thermal Transmittance (u-value) of roof, 1/R = 0.89m2K/W
- Maximum Allowable u-value of roof = 1.20m2K/W
- 0.89 < 1.20 (Pass)
Bungalow @ 90 Meyer Road, Singapore