A home with very low or very high humidity may cause the veneer on an interior door to shrink or expand, causing the veneer to delaminate from the supporting frame or shrink and split. Once this happens, you will most likely have to replace the door. Bi-fold doors are anchored by a pin that fits into a bracket attached at the floor to the closet frame. They also have a bracket at the top that moves in a track. As the sliding bracket wears, the door may start to stick and bind. Catching a coat sleeve between the doors as they close or merely bumping the doors, can loosen the top bracket or move the anchor pin in the bottom bracket. The top bracket comes with a screw to allow for adjustments. If the bracket’s slide or pin wears out, the bracket can be replaced. Wood and wood composite doors are made of natural wood fibre veneers or wood composite panels over a frame. They are not as durable as exterior doors. Interior doors do not require weatherstripping. There is usually a generous gap below each interior door to facilitate air movement from room to room when a door is closed. Remember to re-establish this gap should you decide to install a thicker floor finish. Consider hiring a carpenter for this adjustment. Why has my door panel split? Interior Passage Doors Bi-Fold Doors CABINETS & DOORS 49