A door is a movable barrier that is mostly used to open and close an entryway into a building, room, closet, or even a vehicle. A door is hinged or slides to enable people to enter or exit. Doors are rich with symbolic meaning in culture. They represent transitions, new beginnings, and opportunities between spaces.
Throughout history, doors have been used to indicate social standing, wealth, and identity of the occupants. Doors in religious and spiritual contexts can also be portals to the divine, pieces of protection, or gateways to the afterlife. From an architectural perspective, doors are a functional and aesthetic element of a house or a building. They are designed from different materials, covered with various finishes, and used with versatile hardware choices.
Doors can be installed in different locations, either as exterior or interior doors. Their design and construction depend on whether they are panel doors, flush doors, louver doors, or ledged doors. The most common materials for doors are wood, metal, fiberglass, glass, and composite wood. Some of the popular door finishes are veneer, laminate, paint, stain, and lacquer.
Table of Contents:
History of Doors
Based on the archeological evidence, the earliest form of doors appeared in structures from around the Neolithic period. The first doors were stone slabs on a socket stone, which was found in Northern Scotland back in the early 4th millennium BCE. The first recorded history of doors comes from Ancient Egypt around 4000 years ago. They used heavy timber doors with stone threshold slabs. These doors served not only for access and security but also held symbolic meaning, representing passage and protection. Archaeological discoveries have also revealed false doors carved in tombs, representing a gateway to the afterlife.
Ancient Greece and Rome made huge advancements in door hardware and security. They developed innovations in hinges and locking systems for the future. They used wooden or stone pivots, like in Egypt and Mesopotamia. The Greeks and Romans improved hinge technology by using iron and bronze. They also adopted a wooden bolt lock system, utilizing a sliding bolt that could be secured with a rope or strap from the inside. Location locks appeared around the 7th century, and they were operated from the outside using an angular key inserted through a hole in the door to slide the bolt back.
Types of Doors
Door Classification Based on Location and Function
Doors can be easily classified by location and functionality, and we will provide the necessary information for all of them.
Interior Doors
Interior doors are doors designed for interior use. They are essential components of every building, home, room, and space. These doors are great room dividers and offer more privacy, while also adding to the overall aesthetic of homes and offices.
Common applications are residential, commercial, and specialized. Residential applications include bedrooms, bathrooms, closets, kitchens, living rooms, and other areas that require separation and privacy. Commercial applications include offices, meeting rooms, restrooms, and other spaces that need noise control for work. Specialized applications are rooms that are designed for smaller rooms that need separation.
Typical materials for interior doors are solid wood, hollow core, solid core, MDF, fiberglass, steel, glass, and composite materials. The interior door's primary function is to provide privacy, noise reduction, aesthetic appeal, space management, and security.
Exterior Doors
Exterior doors are designed for exterior use. They mostly serve as the entry and the exit points to a building or a house. These doors are the barrier between the interior and the exterior space. They also provide security and protect the building against weather elements or unauthorized access.
Common applications are front entry doors, patio doors, storm doors, security doors, garage doors, or specialty doors. Front entry doors are mostly designed for the entrance to a home. Patio doors are the connection between indoor and outdoor living spaces. Storm doors are installed in front of an exterior door to provide a layer of protection against the weather and improve insulation. Security doors are designed to resist forced entry. Garage doors provide access to garages.
Typical materials for exterior doors are wood, fiberglass, steel, aluminum, vinyl, and wrought iron. The exterior door's primary function is security, energy efficiency, weather resistance, curb appeal, sound reduction, privacy, and light control.
French Doors
A French door is a traditional door characterized by a pair of hinged doors that feature frames and glass panels. These doors have been designed since the 17th century. The French used these doors to create a sense of openness within homes and as a means to access balconies or the garden.
Common applications include connecting indoor and outdoor spaces, dividing interior areas, and adding visual interest and charm. When used to connect indoor and outdoor spaces, they provide access to patios, decks, balconies, and gardens. When dividing interior spaces, they work perfectly between dining rooms and living rooms.
Typical materials used for French doors are wood, vinyl, fiberglass, aluminum, and steel. French doors provide abundant natural light, aesthetic appeal, and better ventilation.
Patio Doors
Patio doors are large glass sliding doors that connect living spaces to outdoor areas like patios, decks, balconies, or gardens.
These doors are commonly used to ensure access to a patio or a deck. They connect indoor and outdoor areas, and enable natural light to pass through their large glass panels. These doors also create openness, which maximizes the room space.
Typical materials used for patio doors are wood, vinyl, fiberglass, aluminum, and steel. Patio doors functionally provide more natural light, seamless indoor and outdoor connection, energy efficiency, and noise reduction, while also increasing property value.
Garage Doors
A garage door is a large door designed for entering and exiting a garage, which enables access for vehicles and other larger items.
These doors have residential, commercial, and industrial applications. Residential garages are primarily used for storing vehicles and household items. For commercial and industrial needs, these doors are utilized in warehouses, loading docks, or manufacturing facilities. Garage doors can also be used in retail and commercial storefronts these days.
Typical materials used for garage doors are steel, wood, aluminum, fiberglass, vinyl, and glass. Garage doors functionally provide better security, energy efficiency, and durability while requiring low maintenance.
Barn Doors
Barn doors are a type of door that utilizes a track and roller system to slide horizontally, offering a mix of rustic and modern aesthetic appeal for residential and commercial spaces.
Barn doors are installed in residential, commercial, and outdoor settings. In residential buildings, these doors are used for closets and pantries, home offices, living room areas, and bathrooms. In commercial and outdoor applications, these doors are used for retail spaces, meeting rooms, workspaces, and outdoor structures.
Typical materials used for barn doors are wood, metal, glass, and engineered wood. Barn doors functionally provide space saving (since they have a sliding mechanism), easy operation, and easy installation.
Slab Doors
A slab door is a simple panel without a pre-attached frame and hinges. These slabs can be easily customized and finished based on the design and the style of a specific room.
These doors are often used for closets, pantries, and bathrooms. Slab doors are specially used for barn doors, where a sliding rather than a swinging door is needed. Choose slab doors when you have an existing frame, need customized doors, or are doing DIY projects.
Typical materials used for slab doors are wood, fiberglass, steel, composite materials, hollow core, and solid core. Slab doors are lightweight and are great for repurposing. They offer design flexibility and are easy to size and fit in existing door openings.
Prehung Doors
A prehung door is a complete door unit that comes with a door slab, jambs, header, and hinges. These doors can also include pre-cut holes for the doorknob and the strike plate.
Common applications for these doors are new buildings and houses, where there are no existing door frames, or when existing doors or damaged doors need to be replaced. These doors are perfect for multi-unit buildings.
Typical materials used for these doors are wood, composite wood materials, steel, and fiberglass. Prehung doors offer easier installation, guarantee a great fit, improve security, and reduce labor costs.
Commercial Doors
These doors are designed for business, as well as industrial and public buildings. They are heavy-duty entryways that are built to withstand heavy traffic, meet accessibility standards, and conform to strict security standards.
Common applications for these doors are retail stores and storefronts, office buildings, hospital facilities, and hotels. These doors can be used for warehouses, restaurants, and parking garages. For retail stores, these doors can be made from steel and glass, depending on the aesthetic and visibility appeal. For hospitals, these doors are typically automatic sliding doors for hands-free access.
Typical materials used for these doors are steel, aluminum, fiberglass, wood, and glass. Commercial doors provide enhanced security, accessibility, energy efficiency, great durability, and high-cycle performance.
Sliding Doors
A sliding door is a door that opens horizontally. These doors are gliding along the track, which makes them a popular architectural feature in buildings. These doors save a lot of space compared to swinging doors.
Common applications for these doors are balconies and patios, closets, room dividers, and commercial entrances. The most popular sliding door is a sliding glass door for balconies, which enables easy access to outdoor spaces. At the same time, automatic sliding doors are frequently found at the entrances of offices, retail stores, and hotels.
Standard materials used for these doors are glass, wood, aluminum, vinyl, and fiberglass. Sliding doors promote space efficiency, accessibility (enabling people with mobility issues to pass through easily), and operability.
Pocket Doors
A pocket door is an interior sliding door that glides along an overhead track and disappears into a hollow pocket within the wall. This particular design can save a lot of space, improving accessibility.
Common applications for these doors are small rooms, home offices, and dividing large spaces. These doors are ideal for tight spaces like bathrooms, closets, or laundry rooms. They can also separate large open concept areas for more privacy, but they also offer less sound insulation than traditional hinged doors.
Conventional materials used for these doors are wood, glass, aluminum, and steel. Pocket doors offer space-saving, quiet operation, and improved accessibility.
Pivot Doors
Pivot doors rotate on a vertical axis using a pivot hinge system installed at the top and bottom of the door. These doors are designed with oversized panels for modern luxury homes.
Common applications for these doors are large residential entrances, commercial spaces like restaurants, hotels, art galleries, and office spaces, including indoor areas and patios to ensure a seamless transition between indoor and outdoor spaces. These doors are also utilized as secret doors to conceal a room.
Typical materials used for these doors are wood, metal, glass, fiberglass, composite wood, and even stone for unique customization. Pivot doors support large and heavier panels compared to traditional doors, offering a unique opening method, smooth and effortless operations, and high security.
Bifold Doors
Bifold doors are designed with multiple panels that fold open and slide along a track to one or both sides. They allow a larger and more accessible opening than traditional doors and are commonly used for interior and exterior applications.
These doors are used as room dividers, but also for closets and pantries, commercial spaces, and connecting indoor and outdoor areas. Bifold doors are designed to connect homes with gardens, patios, or decks. It can be a great divider between the living room and dining room. These doors are ideal for closets since they don't require a lot of space.
Standard materials used for bifold doors are aluminum, uPVC, wood, and composite wood. Bifold doors provide a space-saving design, enhanced security, unobstructed opening, and traffic door options.
Accordion Doors
Accordion doors are designed with a folding system with multiple hinged panes that slide and stack neatly on one side when they are opened, folding back in a zig-zag pattern.
Common applications for these doors are closets, room dividers, decks, and laundry spaces. This door is ideal for closets since it provides full access to them without needing a large space for swing doors. It's perfect as a room divider (parting a kitchen from a dining room). When used as deck doors with glass panels, accordion doors offer a great way to connect indoors with outdoor decks.
Conventional materials used for accordion doors are vinyl and PVC, wood, glass, steel, and aluminum. Accordion doors offer flexibility, privacy, and space maximization, including light and air flow control.
Salon Doors (Swinging Doors)
Salon doors, also known as swinging doors, are a type of double door that swings open and automatically closes. These doors can swing in both directions and are popular in Old West salons.
These doors have residential and commercial applications. In residential buildings, salon doors are mostly used in kitchens, home bars, closets and laundry rooms, bathroom entrances, and as pet and baby gates. The commercial usage includes restaurants and cafes, healthcare and office settings, and retail spaces.
Typical materials used for salon doors are wood, metal, and recycled materials. Salon doors provide convenient passage and partial privacy while being a self-closing door option.
Fireplace Doors
Fireplace doors are installed over a fireplace's opening. These doors consist of a metal frame and heat-resistant glass panels. These doors are commonly used on prefabricated fireplaces to ensure safety.
Common applications for these doors are fireplaces. These doors are the barrier for a fireplace opening, with two hinged glass panels within a metal frame.
Standard materials used for these doors are durable metals like steel, aluminum, or iron, and glass like tempered and ceramic glass. Fireplace doors offer a unique aesthetic, increase energy efficiency, safety, and control airflow.
Louvered Doors
Louvered doors are designed with horizontal, angled slats that enable light and air to pass through. These angled slats can be fixed or adjustable.
Common applications for these doors are closets, laundry rooms, bathrooms, and storage areas. These doors are a typical choice for closets and laundry rooms, since they promote great air circulation. For bathrooms and storage areas, louvered doors create a necessary barrier while improving ventilation to reduce humidity.
Typical materials used for these doors are wood, composite materials, metal, laminates, and PVC. Louvered doors offer great air circulation, controlled privacy, energy efficiency, and enhance the room's appearance.
Revolving Doors
A revolving door is an entrance door with a system of consistent panels that rotate around a central vertical axis. These doors enable people to enter and exit the building.
Common applications for these doors are office buildings, airports, hotels, casinos, hospitals, and high-security environments. These doors are ideal for areas and buildings that need to manage high pedestrian flow or handle large volumes of people.
Conventional materials used for these doors are aluminum for the frame and structure, and glass for the panels. Revolving doors ensure energy efficiency, security, improve traffic flow, and provide special aesthetics.
Roll-Up Doors
Roll-up doors are a type of overhead door that opens vertically and rolls above the doorway. These doors are made of a single sheet of material, operating by moving up or down in vertical side guides.
Common applications for these doors are commercial and industrial spaces, retail storefronts, storage facilities, garages, and emergency services. These doors are ideal for warehouses and garages due to the need for access control and security.
Standard materials used for these doors are steel, aluminum, vinyl, and polycarbonate or fiberglass. Roll-up doors ensure high cycle access, improve access control, and enhance security.
Pet Doors
Pet doors are small built-in openings in walls, human doors, or windows that enable a pet to enter and exit a house or a building independently.
Pet doors are installed in exterior doors or porches to give pets outdoor access, but they are also used for pet separation. These small doors also enable pets to escape from dangerous situations or to walk from home to garage spaces.
Typical materials used for these doors are plastic, aluminum, vinyl, and wood. Pet doors allow pets to enter or exit their home freely.
Dutch Doors
Dutch doors are half doors, meaning they are doors divided horizontally into two sections. The top and the bottom are separate, allowing them to swing open independently from one another.
These doors are commonly used as front and back entry doors, but can also be found in kitchens, laundry rooms, or home offices. Dutch doors can open the top half to greet visitors without letting pets or children escape. They also provide a physical separation from the rest of the home while maintaining visibility and light.
Conventional materials used for these doors are wood, steel, fiberglass, composite wood, or glass inserts. Dutch doors offer great ventilation, safety, and allow more natural light to enter.
Front Doors
A front door is the main exterior door of homes and buildings, usually facing the street.
Common applications for these doors are residential homes and commercial buildings. The most common application is the main entrance for guests and owners. For commercial buildings, these doors are used for storefronts and offices. Front doors can be designed easily and are customized with different colors to fit different styles.
Typical materials used for these doors are wood, fiberglass, steel, glass, and wrought iron. Front doors' functionality is to ensure security, protect the house against intrusion and weather conditions, add aesthetic appeal, and limit access.
Back Doors
A back door is also known as a rear entrance or a secondary entrance. Back doors provide an alternative access point to the front door. These doors are mostly located on the back of houses or offices.
Back doors are used in houses and other spaces to provide vehicular access and emergency exits. When a home's driveway leads to the back, household members typically use the back door as their main entry point. These doors provide access to backyards, garages, or kitchens.
Standard materials used for these doors are fiberglass, steel, and wood. Back doors ensure better security and accessibility to the property.
Screen Doors
Screen doors are an outer door that has a mesh net installed over an exterior door to allow air into the building while keeping insects and pets outside.
Common applications are residential homes, porches, commercial kitchens, and spaces with large openings. In residential homes, these doors are installed over the front or back door to create a protective barrier while allowing fresh air to circulate. It allows great ventilation and keeps the bugs out of the living space.
Different materials are used for screen doors, such as aluminum, wood, vinyl, and wrought iron. The door's main functions are to ensure good ventilation and air flow, prevent insects from entering, and allow natural light to pass through.
Shed Doors
Shed doors are exterior doors that are designed for an outbuilding. These doors are typically made for outdoor elements.
Common applications are small and large sheds, workshops or studios, and multipurpose storage areas. These doors depend on the size of the shed and what is being stored inside.
Typical materials used for these doors are wood, plywood, metal, fiberglass, and PVC. The main functionality of shed doors is to provide good access, security, weather protection, pet control, and optimal insulation.
Cellar Doors
Cellar doors are made for an exterior basement or a subterranean area. These doors are mostly angled and mounted over the stairwell.
These doors are used for wine cellars, but also for residential exterior basement entry. As such, they can be used as alternative entrances, storage access, and emergency exits.
Standard materials used for these doors are steel, fiberglass, aluminum, and wood. The primary function of these doors is weather protection and security.
Access and Crawl Space Doors
Access and crawl space doors are doors for concealed spaces, enabling maintenance, inspection, and repair. They are small, removable covers installed in a wall, ceiling, or floor that allow technicians to reach and service utilities.
Common applications for these doors are homes and commercial buildings. These doors are used for panels that are near bathtubs and showers. They also provide access to electrical components hidden inside walls.
Typical materials used for these doors are plastic, drywall, steel, and aluminum. The main functionality is to provide access to panels and protect the concealed system from dust.
Door Construction and Panel Configuration
Panel Doors
Panel doors are constructed with a framework with one or more panels fitted into the openings between the frame. Door panels can be made of different materials, such as glass, wood, and other materials. These panels add visual interest and dimension to the door, making them an ideal choice for both interior and exterior use.
Flush Doors
Flush doors are simple doors with a smooth surface on both sides. These doors are like traditional panel doors with recessed or raised sections. The construction consists of a core material between two sheets of plywood, MDF, or veneer. These doors offer a modern and simple look, which makes them ideal for interior doors.
Hollow Core Doors
Hollow core doors feature a lightweight construction consisting of two thin layers of hardboard or fiberboard and a central structure of cardboard honeycomb or foam, and a wood frame. These doors offer poor sound insulation due to their almost empty core. At the same time, hollow core doors are a great cost-efficient option and are easy to install. They can be used for closets or pantries.
Solid Core Doors
Solid core doors are made of a wood-composite inner core between two wood veneers. The door's core and the exterior layer are bonded together to form a durable door. It ensures exceptional insulation, durability, and quality. These doors are the most expensive, and they require a professional for installation. They are ideal for interior and exterior doors.
Composite Doors
Composite doors are designed from multiple layers of material, combining the strengths of each component. These doors offer improved durability, insulation, and strength. This material is ideal for exterior doors since it improves their resistance to forced entry while offering thermal efficiency and weather resistance.
Stile and Rail Doors
Stile and rail doors are constructed from individual vertical stiles and horizontal rails that frame one or more central panels. This frame and panel construction offers great strength and stability, while also ensuring a modern look. These doors can be easily used for interior or exterior purposes.
Molded Doors
Molded doors are interior doors that are made by stamping or pressing hardboard fiber mixture into a decorative design, like panels or planks. This is the most cost-efficient door option that mimics the appearance of traditional wood doors. Molded doors are made from recycled or composite wood materials.
Door Materials
Solid Wood Doors
Solid wood doors are constructed from natural wood, and they can be easily customized. These doors ensure exceptional durability and strength. Solid wood doors can easily prevent damage such as chipping and scratching. They offer increased privacy by reducing noise, which makes them perfect for bedrooms and offices. These doors come with a wide range of design options and styles. With proper maintenance, solid wood doors can last for decades.
MDF (Medium Density Fiberboard) Doors
MDF doors are made from wood fibers and resin. These elements are bound together under heat and pressure. MDF doors have a smooth surface, which makes them perfect for interior doors. These doors are lighter, so they can be installed more easily, but they are also more affordable than other engineered wood options.
Metal (Steel and Aluminum) Doors
Metal doors gained popularity due to their durability, strength, and security they provide. These doors are perfect for exterior use. Steel and aluminum doors can be easily customized with different core materials for better insulation and soundproofing. Metal doors are also fire-rated, which means that they provide crucial protection against fire.
Wrought Iron Doors
Wrought iron doors are popular for their security, aesthetic appeal, and durability. They are used for entryways, offering better security. These doors ensure exceptional durability in various conditions. They can also resist rust and corrosion when they are properly maintained, so using them in harsh conditions is ideal. With regular maintenance, these iron doors can ensure a longer service life.
Fiberglass Doors
Fiberglass doors are made with a durable, low-maintenance material. They are designed with an outer layer called fiberglass, while the core is made of polyurethane foam. These doors resist cracking, rooting, and some other damage. Their foam core lowers energy consumption for heat and cooling. Fiberglass doors can mimic the look of wood, and they can be painted in different colors and finishes.
PVC/UPVC Doors
PVC/UPVC doors are ideal for interior and exterior doors. PVC is more flexible due to plasticizers, so it's better to use it for interior doors. On the other hand, UPVC is an unplasticized option, making it a more durable material that's commonly used for exterior doors. These doors require minimal maintenance and cost less than a solid wood door.
Glass Doors
Glass doors are very popular in homes and offices. They offer a modern look and allow plenty of natural light into the room. It's important to choose the right glass for the door to ensure durability, security, privacy, and energy efficiency. Popular glass materials for doors are tempered glass and laminated glass.
Door Finish Types
Painted doors
Painted doors offer great durability and ensure a clean and stylish finish. It resists scratches and stains, which makes it ideal for both interior and exterior doors. The paint can be easily applied with a brush, roller, or spray. Painted door finishes are versatile, including matte, stain, semi-gloss, and glossy finishes. Matte finishes are non-reflective, which makes it easy to hide imperfections. Stain doors offer a soft sheen and are easy to clean. Semi-gloss finishes are durable and good for high-traffic areas, while glossy finishes are highly reflective, durable, and highlight imperfections.
Veneered Doors
A veneer is a thin layer of real wood that's glued to the door material. Veneers can add a natural wood texture to any door type. They offer versatile grain patterns of different wood species like oak, cherry, and maple, and provide durability and protection even in high-traffic areas. For natural wood lovers, this is the best option.
Lacquered Doors
A lacquer is a protective layer of coating added to a door. This layer significantly resists moisture and damage, such as scratches. It offers a smooth, glossy surface that can be achieved by applying multiple layers of lacquer. It's a popular choice for interior doors and is available in a wide range of colors and sheens. This finish can be easily repaired, which makes it even more popular.
Laminated Doors
A laminate finish is a thin layer of synthetic material that protects the door's surface. It's a layer that can easily mimic the look of wood, but it can also feature customized colors and designs. It's a sheet of paper treated with special resins under the influence of high temperatures and pressure. This finish has become very popular since it's affordable and durable, requiring minimal maintenance.
Polished Doors
A polished door finish creates a highly reflective surface with a bright, clean appearance. This door finish is found in modern and traditional designs. However, some of the high gloss polished finishes can easily show fingerprints, making it best suited for door hardware with less frequent hand traffic and requiring regular polishing to maintain its shine.
Varnished Doors
Varnish is a protective coating that increases the wood's natural beauty and is available in oil-based, water-based, and polyurethane varieties. This finish can be matte, stain, or gloss. It provides durability and is easy to maintain. Proper application requires a smooth surface. The coat can be added multiple times, protecting the beauty of wood doors and enhancing their aesthetic.
Powder-Coated Doors
Powder coating is a decorative and durable coverage for doors. It's a dry powder that can be applied to the door's surface. The door is then baked in an oven, creating a smooth and hard surface. This coating ensures high durability against chipping and scratching. This type of finish can be customized to any style and design.
Anodized Aluminum doors
Anodized aluminum finish is a colored oxide layer that ensures durability and protects the door against corrosion. It's available in standard clean or multiple colors. This finish offers a longer-lasting finish that doesn't require any maintenance. This door finish is ideal for exterior doors, since it protects the door against all weather conditions.
Textured or Patterned Glass Doors
A textured or patterned glass door features a design that is pressed into the glass during manufacturing. It makes a glass door semi-transparent. Some of the common types of textured and patterned glass are frosted glass, fluted glass, hammered glass, rain glass, and bubble glass. This finish increases privacy, softens the light, enhances aesthetic appeal, and lowers maintenance.
Door Performance
Thermal and Sound Insulation (STC ratings)
Doors are typically designed with thermal and sound insulation, which are rated differently. Doors have separate ratings for thermal insulation and are rated with R-value and U-factor. At the same time, the sound insulation is rated with an STC rating.
The STC ( Sound Transmission Class) rating measures a door's ability to block noise, with higher numbers indicating better soundproofing. For example, solid core doors offer better STC performance than hollow core doors. A door's mass, thickness, and density are crucial for sound blocking.
Thermal insulation is the door's ability to resist heat transfer. It's measured with the R-value, representing a thermal resistance, which means that a higher R-value means better insulation. On the other hand, the U-factor measures how effectively heat is transferred through a material, and a low U-factor means better insulation.
Fire Resistance (UL ratings, EN standards)
Fire resistance standards for doors vary between North America and Europe. The UL (Underwriters Laboratories) ratings specify the duration of fire resistance (UL10C), which specifies a time duration (from 20 minutes to 4 hours) and often includes a temperature rise limit for the unexposed side of the door after 30 minutes of fire exposure. In Europe, the EN (European Norms) standards define the fire resistance (EN 1634-1) duration and performance criteria that products must meet. Both UL and EN standards require certified products to be tested and labeled to ensure they meet safety requirements and can effectively act as a barrier against fire, smoke, and heat for the specified duration.
Security Performance (Impact ratings, Forced entry resistance)
The performance of door security is assessed based on impact resistance and forced entry resistance standards, which are established by the ASTM F476 or the Steel Door Institute (SDI). These standards evaluate a door's ability to withstand attacks using specific tools within defined timeframes.
Impact ratings focus on the door's resistance to blunt-force impacts and debris from extreme weather conditions, while forced entry ratings assess the door's strength against tools like crowbars and prying devices. A higher rating indicates better resistance, whereas a lower rating signifies weaker security.
Weather Resistance (Wind, Rain, UV protection)
When selecting the ideal weather-resistant material for doors, consider options like fiberglass or steel. Additionally, apply a protective finish such as paint or varnish. Installing a storm door or a canopy can also help, along with ensuring proper sealing using door sweeps and weatherstripping to block wind and rain. To enhance UV protection, choose materials resistant to fading or apply a UV-blocking finish to the door's surface.
Frequently Asked Questions About Different Types of Doors
What Are the 5 Types of Garage Doors?
Five types of garage doors are sectional doors, roll-up doors, side-hinged doors, sliding doors, and tilt-up doors. Section doors use panels, while roll-up doors coil into a cylinder. Side-hinged doors swing like regular doors, while sliding doors move horizontally along the wall like barn doors.
What Is the Most Common Type of Exterior Door?
The most common type of exterior door is a pre-hung fiberglass entry door. This door offers great durability, low maintenance, weather resistance, and provides a realistic wood appeal. Some other popular options are steel and wood doors.
What Are the Types of Flush Doors?
The types of flush doors are distinguished by their core materials, like hollow core, solid core, and cellular core. Hollow core doors utilize a honeycomb structure, while solid core doors use engineered wood to increase their strength. Cellular core doors use a light wood frame with fiberboard or paper core.
