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Interior Doors

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Common Types of Interior Doors

Interior doors are commonly constructed from materials lighter than those used for exterior doors because they do not have to provide security or be weather resistant. They may be solid wood, hollow core or solid core wood, or fiberglass and composite wood. They may be swinging, sliding, gliding, or folding. They may be paneled, flush, louvered, or glazed.

Interior doors are usually less than the standard 3 feet wide for exterior doors. The more common widths are 32 inches or 30 inches but also include narrower widths of 28 inches and 24 inches. Narrower doors can be used effectively in tandem as double doors or individually for linen closets.

Solid wood doors

These doors, whether paneled or smooth, are a top choice for long life, beauty, and appearance. In addition, they offer the best soundproofing between rooms. As with quality exterior doors, the best ones use mortises and tenons to join stiles and rails. Lesser doors use dowels to connect stiles and rails.

Hollow core doors

Widely used because of its low cost, this type of door is formed by attaching a smooth veneer over a light frame. The voids are filled with compressed cardboard or similar material.

Solid core doors

Similar in design and construction to the hollow core, it is stronger and more soundproof because the voids are filled with particleboard or laminated wood strips.

Folding doors

Folding doors, commonly used for closets, are a good choice in small rooms where there is insufficient room for a swinging door. Folding doors can be pushed or folded to the side to provide full access to the doorway. These doors normally are suspended from an overhead rail.

Bypass doors

As with folding doors, bypass doors are widely used on closets. Some are made of mirrored glass. The advantages of mirrored doors include making the room appear larger, providing a dressing mirror, and no swinging doors to open into the room. On the other hand, only 50 percent of the closet doorway can be accessed at once.

Gliding doors

French doors and patio doors are among the most widely used types of gliding doors. They normally roll on vinyl or neoprene wheels in tracks along the bottom of the doorframe. The wheels can be adjusted up or down to level the moving door.

Pocket doors

For tight spaces, the pocket door provides the best solution. The door rides on overhead rails between the door opening and a recessed space built into the wall. Building such a space is easily done in new construction, but adding a pocket door during remodeling means removing and rebuilding one section of wall for the pocket door.

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