Single component solvent-free elastic silane-terminated sealant for sealing wood floors both indoors and out. It is easy to apply, offers a high level elasticity which remains constant over time, good adhesion on most surfaces, excellent resistance to chemical products and to atmospheric agents as well as excellent resistance to fresh water and salt water. It can be recoated with oils or with waterborne finishes. Due to its particular chemical characteristics, it does not foam during hardening and the seams do not need to be pre-treated with a primer.