He installed on every floor two glass widows about two glass frames each.
Each frame was about 1.5 feet wide by 3 feet high.
One was on the wall facing the morning sun and the other was facing the sunset.
Each floor there were two of these.
The heat generated by the glass frame was only blocked with a layer of plywood about .5 cm thick.
If you check the temperature on the plywood surfaces it hit about 36.8*C.
This is one of the core heating element in this BH.
In addition to these six glass window heaters the BH was erected with one layer of wall.
The heat coming from nearly all the walls (facing the sun) is almost 35*C.
Simply outrageous and unfit to be a BH developer.
I told the owner about these finer points and I firmly advised him to quickly do something.
"The main reason why your tenants, about 300 of them base on bird shit spots on the BH floors, are not paying you their rental fee is because your BH is too hot."
If he did nothing to reduce those high temperatures he will continue running a BH with little nests forever.
Those swiftlet like wanted to spike you for not giving them the right environment so they stay free of charged, I told him.
To cut down his cost and test my prediction he finally decided to go with one floor first.
However I promised him that all the six glass window will be covered with those bubble sheet heat insulator.
I told my workers to measure the glass sizes and cut the bubble sheet precisely.
Using double sided tapes I will make sure no heat will pass through the shield and into his BH.
I hope by doing so his BH will have six heaters sealed and ceased to function.
The six will contribute at least 1-2 *C drop in temperature inside his BH.
Can you imagine all the 26 more BHs around this BH?
All are facing the same problem.
I think the developer should reboot his knowledge about swiftlet farming.
Other BHs showed the same flaws.