Lumberjack 5 minute polyurethane wood adhesive liquid is brown in colour and is ideal for larger applications, or in the workshop where greater economy is required. Sets hard in 5 minutes. The liquid is 100% waterproof, gives exceptionally high bond strength and is resistant to most chemicals. The product foams slightly on application to fill small gaps, which increases bond strength. Conforms to EN 204. D4 Water Resistance.