Most radiant heat system manufacturers will provide the names of contractors in a given area. Installing hardwoods over radiant heat isn't much different from laying a typical hardwood floor. One critical step is making sure the slab and subfloor are dry before the floor is installed. The moisture content of the wood flooring itself is important too. For that reason, it should be kept in the room in which it will be installed for a couple of weeks before it is laid.
All wood expands and contracts with seasonal changes in moisture content.
The wider a strip, the greater the potential for gaps between the boards. Parquet and strips are good choices for topping radiant heat systems. Planks wider than 3 inches are not recommended. Advocates of radiant heat say no other option is as comfortable or efficient. Those with forced-air heating systems commonly complain of cold feet and drafty rooms.