Thoma Holz100 is a prefabricated building system made of high quality cross laminated 100% pure solid wooden boards (glueless CLT) connected by dowels with absolutely NO glue, nails, chemicals, toxins, or VOCs. Holz100 has set world records in heat insulation and went above building standards in energy savings, indoor air quality, soundproofing, fire/earthquake/radiation protection, to mention a few. That’s why Holz100 is certified in FSC, PEFC, and GOLD in Cradle to Cradle as it exclusively uses moonwood. The international Holz100 patent guarantees that you will receive the true original product, straight from the inventor.