Page 2 - Doors 101

When you stroll through a building, you rarely pause to think about the doors you pass. But with each door swing, you are either passing an interior or exterior door. Both types of doors are made differently because they serve two distinct purposes. 

Exterior doors act as guardians, shielding your home from the outside, while interior doors carve your living space into distinct rooms. At first glance, the difference seems straightforward, but it isn’t, and they vary in design, materials, and functionality. In this article, we’ll unpack the purpose of interior and exterior doors, explore hybrid or mixed applications, and help you pick the right door for your space.

Interior and exterior doors both serve the same fundamental purpose of opening and closing, but the way they are built, designed, and equipped varies greatly. To better understand these distinctions, let’s break down the key differences between interior and exterior doors.

Material Composition

Interior

The biting cold, wind, snow, and ice of winter can do more than chill your bones, and they have a way of sneaking into your building through doors. Not only will it drive up your energy bills, but it will also cause drafts and impose wear and tear. 

A door is one of the key boundaries between your interior climate and the elements outside, so ensuring it is properly weather-proofed is a necessity. From sealing gaps to reinforcing thresholds, winterizing your doors will:

• Provide comfort

• Lowers heating costs

• Extend the life of your door

Before you start sealing every corner, it’s important to locate where cold air sneaks in. The most common problem areas are:

• Gaps around doorframes

• Worn weatherstripping

• Spaces between the threshold and the bottom of the door

• Poorly insulated attic doors 

Addressing these leaks early is recommended, as unchecked drafts can lead to both energy waste and moisture damage. Here are a few simple but effective techniques you can try, but

When picking a door, most people tend to focus on style, color, or material, and while these are essential, there is another factor that determines functionality. This is known as door handing. Think of it as the secret code that tells you which way a door swings, which side the hinges are on, and how it interacts with your space. Get it wrong, and your door could hit a wall, block traffic, or make your room feel cramped. Get it right, and it will open smoothly, look professional, and even make your space safer.

Door handing is simply the direction a door swings and the side the hinges are mounted on, and whether the door opens inward or you have to pull it towards you. For instance, if the hinge knuckles are on the right, you would use your right hand to open such a door. 

Now, this may sound simple, but even experienced contractors occasionally get it wrong because doors can be approached from either side. The key term to remember here is “keyed side,” that is,

Compliance with regulations isn’t always straightforward and contains nitty-gritty details that many people overlook, especially small businesses. But these standards aren’t just for show, but are necessary in preserving the safety of people and properties. Failure to meet regulations can lead to serious consequences, including fines, insurance issues, or even endangering lives during an emergency. 

Ever hear the statement, “the devil is in the details”? So, things that you might overlook may end up causing monetary loss or putting your customers in danger. Understanding the key standards and regulatory bodies that govern door safety can help store owners.

The NFPA sets widely recognized standards for fire safety, including requirements for doors in commercial spaces.

• Fire-Rated Doors: NFPA requires certain doors to resist fire for a specified period to prevent fire from spreading.

• Self-Closing Mechanisms: Fire doors must have automatic door

Your door is the first line of defence against thieves. Research shows that, among other things, door locks or deadbolts can reduce burglary more than home security alarms. Having a good lock alone isn't enough if it can be easily breached, especially for commercial buildings. But with anti-theft doors, they come engineered with materials and innovative locking systems to stand against force entry. 

With these types of doors, you can rest assured that your valuables or sensitive business information will be protected. Choosing the right anti-theft door can make all the difference, so let’s explore the options available to you.

Steel doors are the strongest option for protecting sensitive commercial sites such as factories, warehouses, and data centers. Unlike wood or glass, steel’s molecular strength allows it to withstand extreme force, cutting, and leverage attacks. 

Beyond raw durability, these doors feature reinforced frames, multi-point locking systems, and anti-tampering

Installing a new commercial door is a big investment that directly impacts your business security, efficiency, and curb appeal. Whether you are upgrading your current entryway or installing commercial doors for the first time, proper preparation ensures a smooth process and long-lasting results.

At CDF Distributors, we provide high-quality commercial doors with fast nationwide shipping. To help you get ready, here is a guide on how to prepare for your upcoming installation.

For a straightforward installation, an experienced contractor can usually complete the job in about thirty minutes to an hour. More complex projects, such as double doors, specialty hardware, or fire rated doors, may take longer.

Hiring a skilled contractor ensures the installation is done correctly the first time and keeps business downtime to a minimum. If you need reliable doors that ship quickly, explore our in-stock steel doors and wood doors.

It is not far-fetched to say that when you walk into the building, your eyes might be drawn to the décor, flooring, and even the lighting. But have you ever noticed the humble door frame, which plays an important role but is often overlooked? Even during the renovation or building of a property, door frames are often not the focus of attention, but rather the doors themselves. Yet this small detail carries more weight than most people imagine.

Door frames are not only for aesthetics, but they also determine durability, security, and functionality. They are the backbone of your door system, quite literally. Door frames support the weight of the door, aligning it perfectly, and contributing to insulation and safety. Although you will find numerous options in the market, the best door frames boil down to two options: knockdown (KD) steel door frames and welded commercial metal door frames. CDF Distributors offers both options, giving builders and contractors the flexibility to choose the best

Every year, businesses in the U.S. lose nearly $45 billion to theft. While some incidents happen during operating hours, most occur when businesses are closed. Even more alarming, an estimated 56% of burglaries involve forcible entry, proving that many standard commercial doors can be bypassed with ease.

Protecting your property starts with reinforcing your entry points. A strong, secure commercial door can help prevent costly losses and give you peace of mind. Below, we’ll cover five practical ways to reinforce your commercial door and safeguard your business.

No commercial property is completely immune to break-ins. By strengthening your doors, you create a serious obstacle for criminals and reduce the likelihood of forced entry. Even simple upgrades can save you thousands in damages and lost inventory while protecting your employees and customers.

To keep your business compliant and protected, it’s also important to understand building code laws

Since the 1940s, technology has significantly improved the manufacturing process of commercial hollow metal doors. The manufacturing process involves nine steps before a metal door is shipped to a job site for installation. First, the process begins with the raw materials. The standard material for a commercial metal door is galvanized steel.

Galvanized steel is a steel surface that has received a galvanized coating, which has been annealed. Galvannealed steel starts with a galvanized coating, where the steel is dipped in zinc to protect it from rust. After coating, the steel is heated (annealed) to allow the zinc to bond with the surface. The result is a corrosion-resistant matte finish that holds paint well.

Steel shaping for commercial doors involves several key steps:

• Large steel sheets are cut down to the required door size.

• The sheets are bent and formed into the outer shell of the door.

• Reinforcement channels are shaped and

Selecting the right warehouse doors is more than just a design choice. It directly impacts your facility’s productivity, safety, and security. A high-quality warehouse door should open smoothly, stay secure after hours, and meet the unique needs of your operation. At CDF Distributors, we make it easy to find durable and affordable doors for warehouses, factories, and commercial buildings.

In this guide, we will cover the key factors you should consider when buying new commercial doors, including foot traffic, safety, measurements, and environmental conditions.

The amount of door traffic in your warehouse determines the type of door and opening mechanism you will need.

• Low-traffic doors that open once at the start of the day and close at the end do not need to prioritize ease of operation.

• High-traffic doors that open 50 to 100 times daily require smooth functionality to maximize workflow.

For office spaces, break rooms, or high-traffic interior areas,