Will MOULD be growing in their bedrooms? Condensation and mould growth through single glazing is a HUGE Issue especially in High-rise developments. I was speaking with a highly respected Architect just days ago, he said that most high-rise apartments are using Awning windows with restrictors fitted so that children do not fall out, ( good call), issue is next to no ventilation coming through a restricted opening, (he was so happy I had a fix for that) also when doing the calculations for cross ventilation the BCA expects that 1/2 the opening is actually open. So conclusion, Lack of ventilation, plus single glazing plus lack of air tightness between the frames and the building fabric we have very unhealthy buildings going up. Are you a builder that cares about your clients long term health, then contact me about my mission to Double glaze all buildings at very affordable rates due to volumes available now.”