Vila mentioned on a previous show how to lay a woodblock floor. (using the ends of the boards lying flat on the surface). He said to lay the blocks then pour/press a paste of 2 parts sawdust and 1 part something else in the crevaces. I just cant remember what the other part was. If you saw the show please let me know as my wife would love a woodblock floor.
Cobblewood flooring is a proprietary product. You can try to duplicate it >at home using your own materials but the results may differ. You can >purchase all the necessary elements from Birger Juell, LTD., the makers of >Cobblewood and/or you can purchase the video of the Chicago Cobblewood >installation. You can reach Birger Juell at 312-464-9663 for information >on ordering the product. It comes in a variety of surface options. >The grout for the cobblewood flooring is composed of sawdust from the wood >mixed with a fast-drying oil-based sealer in a ratio of 2 parts sawdust to >1 part sealer. (Birger Juell sells this grout as part of the package. >Although you can try mixing your own from the recipe above, some viewers >who have written to say they've had mixed results with their homemade >grout.) > Pour the grout on the floor push it into the cracks using a rubber trowel >or your hands. Trowel in the grout. Squeegee off the excess. Steel wool >the face to remove any remaining excess grout that could dry to the top of >the bricks. Let it sit over night and then apply another coat of oil-based >sealer the next day. They also have the video for sale at the website