In all currently produced Petrof upright pianos we use only synthetic adhesives, namely PVAC (polyvinylacetatechloride – white glue) or two component carbamide-formaldehyde glue. All these adhesives have a high degree D3 or D4 water resistance.

Construction-joints of Petrof grand pianos are also glued with the same adhesives as upright pianos, only profiled edges of the cheeks and damper felt of Petrof actions are glued with natural hide glue.