Many decoration project buyers encounter deformed and moldy interior doors after short time use in kitchen and bathroom areas. Traditional solid wood doors absorb moisture easily while inferior composite doors lose surface coating quickly. Qualified wpc door solves humid space decoration pain points, this article sorts practical purchasing reference standards.
Premium wpc door adopts modified wpc material mixed with high density PVC resin and waterproof additives, cutting water absorption rate to extremely low level. Unqualified low proportion PVC mixed wpc material will absorb steam from daily washing, leading to door frame expansion and uneven gap after several months of use. Stable raw material ratio guarantees dimensional stability under long term humid contact.
High density wpc door above one point two grams per cubic centimeter suits continuous high humidity bathroom environments. Medium density wpc door fits semi humid kitchen and laundry rooms with intermittent water vapor contact. Low density lightweight wpc door only applies dry bedroom spaces and cannot bear frequent moisture erosion for long time periods.
Complete pvc lamination forms dense isolation film covering whole wpc door surface to block steam infiltration. Thin inferior pvc film will crack under temperature change, leaving tiny gaps for mold breeding. Thickened scratch resistant pvc film maintains full surface sealing state without cracking after years of humid environment use.
Cut edge of raw wpc sheet exposes internal wood plastic fiber without protection. Reliable manufacturers adopt full edge wrapping pvc film process for finished wpc door, sealing all exposed cross sections thoroughly. Simple unpainted raw edge doors lose moisture resistance ability quickly and cannot be used in water rich indoor areas.
