If I may clear something up, Tinfoil is a word leftover from bygone eras, like when food cans were internally coated with real tin. In today's world, the only reasonable interpretation is aluminum foil. Mr. Blueroom also hails from Canada. This may explain his use of archaic forms of English.
Another point to consider, Mr. Blueroom is a software programmer and might not be too familiar with hardware. When it comes to a Faraday cage, any continuous conductor will form a shield. The problem with aluminum is that it quickly forms an oxide coating and can not be easily connected in an electrical sense. However, a single piece of aluminum foil can be large enough to make a hat without the risk of making poor electrical connections. For larger cages, like a whole room in a house, brass screen is usually used because it costs less than copper and it contains enough copper to be properly and reliably connected at the joints.
Old joke, but applicable: How many computer programmers does it take to change a light bulb?
Answer: None. A light bulb is a hardware problem.