In West Bengal, the monsoon brings heavy rain and relative humidity exceeding 85%. This damp air can soften standard white wood glue (organic animal glues or cheap PVA), causing plywood joints to open up. To secure your plywood furniture, check that your carpenter uses water-resistant synthetic resin adhesive (specifically D3/D4 rated PVAc glues or marine-grade polyurethane wood glue). These adhesives create a waterproof bond that doesn't soften with moisture. Brands like Fevicol SH and Fevicol Marine are highly popular across Birbhum hardware shops for their quick drying time and mold-resistant properties.