Fire Door Core Types

Steel stiffened core doors feature steel ribs in the interior of the door and are used where durability and security are important. 20 45 60 90 minute or 3 hour label. Not available fire rated.

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Labeled fire doors control the spread of fire and smoke for up to 3 hours.

Fire door core types.

Steel is the sole door material to deliver a 3 hour fire rating. Steelcraft l series optional core. Hollow metal doors with this core type are most often used at exterior openings and can be fire rated up to 3 hours. Wood door cores are central to the door s performance and durability.

Hollow core doors are usually purchased for two basic reasons. Most steel doors outlast their wood counterparts by over 10 years are better insulated vandal resistant and longer lasting than wood doors or fiberglass doors. This is a laminated door construction. They weigh less and are expected to cost less than solid core.

Core types the backbone of every door. The first level of insulated door core is the polystyrene which is a slab of foam that is placed in the core of the door. The insulation value is much higher than the honeycomb but lower than the polyurethane. The core type can also greatly affect the cost of the wood doors on your project we ll briefly cover each core type and talk about some of their benefits.

Each core type has benefits and specific applications where they are recommended or even required to be used. Solid core doors offer good fire resistance when they are at least 1 3 4 inches thick. Some solid core doors intended to look like painted wood use no surface veneer at all they are solid slabs of mdf or another engineered wood shaped and molded to give. The available door thickness is a nominal 1 3 4.

Rigid honeycomb core. Construction makes them resistant to expansion and contraction due to humidity changes. Oshkosh door company offers non rated fire rated and speciality cores to meet the specific demands of nearly every environment. The window and door manufacturers association wdma has developed performance standards for architectural grade wood doors determined by duty levels.

Steelcraft h series optional core. Polyurethane core doors are suitable for exterior openings in cold climates. Mineral fire doors consist of the mineral core itself with lengths of firestop material used for stiles rails and blocking. Heavy duty 18 gauge steel doors.

Metal fire doors are an economical alternative to wood fire doors when more than a 20 minute rating is required. Commercial fire rated doors are widely recognized as the best value in the door industry.

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