Bats!

This is a bit of a saga, so I’ll do a quick intro before I get to the guts of it. I purchased a house in December 2006, and after a month or so living there I noticed a scratching noise in the walls. I pulled out the air-con, and looked into the wall cavity, and there was a roosting bat. So I did a bit of research into them, and decided they were getting in around the air-con, so I left the air-con out one night, and late in the evening sealed up the hole, and put it back in. Of course the next night there was still scratching, but not only there, in the ceiling as well. ...

March 11, 2007 · Nigel Sim

Roof colours impact on temperature

These are some preliminary results for roof colour tests I am conducting. The setup is 8 equal sized pieces of roofing material, some painted with different coloured roof paints. They were left out in full 12noon summer sun (Lat 19 south), and the temperature of the under side of the material was measured after 30 minutes exposure. Results follow: White Colour Bond 48C Painted white Zincalume 45C 2 coats painted white Zincalume 43C 2 coats painted white Colour Bond 45C Black painted Zincalume 70C Silver painted Zincalume 63C Gold painted Zincalume 60C Unpainted Zincalume 50C I’m going to conduct this again soon, with an 8 channel data logger, so more precise results can be presented. But for now, you can get the jist of what is happening. ...

November 29, 2006 · Nigel Sim