Found this below the laminate floor installed by my "contractor". 12 mm osb, non toung and groove installed on wooden beams more than 1 meter apart with sand / slag in between. It was sagging and bouncing 1 cm up and down, this dumb mutherfucker even sprayed PU foam below in some of the pockets. Im so tired of hungarians broskis ... doing everything myself now. These people in this country are beyond retarded.
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