Wood Products for Exteriors

Application description

Specialists for the Bonding of Treated Wood

Whether for outdoor furniture, deck floors or facades, the adhesives used must meet equally high requirements as the durability of the wood and the wood protection systems applied to it. In exterior applications, long-term bond performance against moisture, heat and weathering is critical.

For bonding modified wood, Bonomo provides special chemically crosslinking adhesive systems that are designed to meet these elevated requirements. EPI (Emulsion Polymer Isocyanate) adhesives, processed as two-component systems and mixed with isocyanate crosslinkers, ensure fast setting even on durable wood species with reduced water absorption.

In addition, the chemical reaction of the crosslinking agent creates a bond with high heat resistance. This makes EPI adhesives especially suitable for hardwood, wood with high resin content and tropical wood species, even in applications with direct exposure to weathering.

Due to their 100 percent solids content, one-component PUR prepolymers are not negatively affected by the reduced water absorption of modified wood. This makes them a highly reliable solution for demanding exterior wood products where process consistency and final bond performance are equally important.

Both adhesive systems enable bonds with moisture resistance considerably superior to the requirements of durability class D4 according to EN 204 and can achieve tensile shear resistances above 7 N/mm² at 80 °C in heat resistance tests according to EN 14257 (WATT 91).