Susanne writes from somewhere in Canada: "I'm having a house built and paid CAN$4500 extra to have upgraded insulation, which is 1" PINK polystyrene. The builder put two holes, each measuring one foot in diameter in one of the panels. He is planning to repair it with tape. I would like to have it replaced because living in Canada, I would like to make sure that it has its maximum insulation value. My question to you: Would my insulation value be the same with tape?"

Answer: The proper fix would be to either plug or patch the hole with another piece of foam or completely replace it. Tape may resist weather but does not carry an R-Value like the foam.