I'm thinking about better insulating my 2-bedroom apartment in Porto and I've heard a lot about cork. I have about 50 euros per square meter in my budget and I'd like to know if it's really worth it or if there are better and cheaper alternatives.
Cork is good, but at 50 euros per square meter it's a bit tight for serious insulation - that price covers more aesthetics than thermal performance. If your goal is actually to improve insulation, you'd be better off with expanded polystyrene boards or rock wool, where at that price you can actually get decent thickness. Cork makes more sense if you've got a bigger budget or if you also care about acoustics and a more natural finish; you could always use it on just one wall or mix it with something cheaper on the others to stretch your money.
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