My mom is looking for a new house, and one house she is considering has a "remark" in the inspection report that there are "particle boards" directly under the roof tiles. Is this a common method? Are there risks? Is it worse than with roofing felt (which I thought was always used). I'm a novice but worried she might be making a bad, more risky choice.
Without knowing what type of board it is? Tongue and groove boards with underlay paper are always better than a pure wood fiber board.T Tornugglan said:
But many prefabricated houses are built with masonite as an underlay covering or another impregnated wood board.
What kind of boards are these? Oil-hardened board as a roof base on catalog houses from around the 80s. It's a cheap construction that often works, but if it's from that time, you should calculate that it will need to be replaced in the near future regardless.
Oil-tempered board has been used much later than that. But now they probably use only a fabric when it should be as cheap as possible.
It is an old house, built in 1920.
Are those boards that were placed directly on a shingle roof perhaps? It's a quick method that allows you to avoid tearing down the old shingle roof.
Will try to find out more. Haven't been involved in looking at it, but apparently it looked well-maintained. Just got a bit puzzled. They apparently said that "it was just another way of doing it."
Have experienced old houses with falor that have had masonite on the falor and then battens and roof tiles, maybe the house is one of those...