I have seen carpet, vinyl and wood used to cover ferrite absorber. I would recommend using a thin plywood/paneling such a 1/8'. As far as wood containing moisture is concerned, as an amateur wood hobbyist from way back, I know that the moisture content in wood will gradually adjust to its location. So, as long as your room doesn't have high humidity you should be OK. I would also expect the fibers in carpet to absorb the same or similar amounts of moisture. I understand that the glue used can have a more noticeable effect on the room than the wood itself. Use as little as possible! Many tables, tripods etc used in chambers are all made of wood! Any of the chamber manufacturers should be able to recommend an acceptable material and glue! Tony Colorado
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