what (if any?) substance/material can obstruct a thermal imaging camera? how far through a building can they penetrate? can they pick up heat through solid concrete? as 'lead' obstructs x-rays can the...
how can i clean a new lead roof i recently fitted (over a bow-bay 2000x300mm) back to a finish that i can then apply patination oil? and is it possible once lead had been exposed to rain?? thankyou
can somebody please tell me roughly how much it costs to run an oilfilled radiator, also how to work out cost of running other heating appliances. it is 1500w, series a?