For generations, BILCO has been one of the most recognizable names in the cellar door industry, particularly throughout the Northeast. In many communities, the brand name has become so familiar that homeowners often refer to any exterior basement entrance as a “BILCO door,” regardless of who actually manufactured it.
That familiar name is now part of a much larger organization. In 2024, Quanex Building Products completed its acquisition of Tyman plc, BILCO’s parent company, bringing BILCO into a global portfolio of residential and commercial building products. The acquisition represents a significant change within the building-products industry, but for homeowners in Pennsylvania, New Jersey and Delaware, the practical considerations involved in replacing a cellar door remain much closer to home.
A basement entrance still needs to be properly measured. The concrete or masonry beneath it still needs to be sound. The replacement door needs to match the opening, operate correctly, and provide appropriate protection from the weather. In many cases, the age and condition of the home matter just as much as the product itself.
That is why, even as the industry changes, local cellar door experience continues to play an important role.
When an older cellar door begins to rust, leak, stick, or deteriorate, many homeowners naturally assume that the simplest option is to replace it with another door carrying the same brand name. If the existing door is a BILCO, the first instinct may be to purchase another BILCO product.
That may be an appropriate solution in some situations, but it should not be an automatic decision.
A cellar door is only one part of a larger basement entrance. Its fit and performance depend on the size and condition of the opening beneath it, the surrounding concrete or masonry, the age of the home, and the way the original door was installed. Over time, foundations can settle, concrete can deteriorate, and previous repairs or alterations can change the dimensions of the opening.
These conditions are particularly common in the Greater Delaware Valley, where the housing stock includes properties built across many different eras. Homes in Pennsylvania, New Jersey, and Delaware may include everything from older rowhomes and farmhouses to mid-century suburban properties and newer construction. The basement entrance on one home may be straightforward and well suited to a standard-size replacement, while another may require a much more individualized approach.
For that reason, Tri-State Cellar Doors evaluates the entrance as a whole before recommending a replacement. The objective is not simply to remove one door and install another. It is to determine what the property needs today and to select a solution that fits the opening correctly.
When an existing opening corresponds to a standard size and the supporting foundation is in good condition, a standard cellar door can be an efficient and practical solution. Steelway manufactures standard doors for many of the common configurations found in residential applications.
Older homes, however, do not always conform to current standard dimensions. Some basement entrances were built long before modern product sizes became common. Others have changed over time as foundations settled or previous owners modified the entrance. In some situations, an older replacement door may have been made to fit an opening that was never ideally suited to it in the first place.
This is where Steelway’s custom manufacturing capabilities become particularly useful. Steelway has manufactured cellar doors since 1963 and can produce custom solutions for a wide range of non-standard openings and configurations. That gives Tri-State the flexibility to approach each project according to the actual conditions of the property rather than requiring the property to conform to a limited selection of stock dimensions.
Custom manufacturing does not mean that every project should become more complicated. In many cases, a standard door is exactly the right solution. The value lies in having another option when the opening does not fit neatly into a catalog size.
For homeowners, this can make the replacement process much more practical. Rather than making extensive changes to a foundation simply to accommodate a stock door, it may be possible to manufacture a door that more closely fits the existing entrance.
One of the most important parts of a cellar door replacement is also one of the easiest to overlook: the condition of the structure beneath the door.
A homeowner may begin considering replacement because the doors have become rusty, difficult to open, or visibly worn. Water may be entering near the basement entrance, or the frame may no longer appear to sit properly. While the door itself may be part of the problem, the underlying concrete or masonry can also contribute significantly to the condition of the entrance.
Over time, concrete can crack, deteriorate, or become uneven. Older repairs may begin to separate. Fasteners may no longer be anchored in sound material. In some cases, years of patching or modification can leave an opening that needs additional work before a replacement door should be installed.
Installing a new door over a failing foundation may improve the appearance of the entrance temporarily, but it does not necessarily address the cause of the problem.
Tri-State Cellar Doors’ ability to provide both cellar door installation and related concrete services allows the team to evaluate the complete entrance. This is especially important on older homes where the condition of the supporting structure may not be obvious until the existing door is closely inspected or removed.
For homeowners, this also simplifies the process. There is no need to determine in advance whether the problem belongs to a door installer, a concrete contractor or another trade. The entrance can be evaluated as one project, and the appropriate combination of product and repair work can be recommended from there.
Cellar door installation requires more than placing a new product over an existing opening. Measurements need to be accurate, the frame needs to sit properly, the doors need to operate as intended, and the complete installation needs to work with the surrounding foundation.
These details become especially important with older properties, where openings may be slightly out of square or affected by years of settling and repair. A replacement that appears straightforward based on a few basic dimensions can sometimes reveal additional conditions once the existing unit is removed.
Local experience helps installers recognize these issues before they become larger problems.
Tri-State Cellar Doors serves homeowners throughout the Greater Delaware Valley, including areas of Pennsylvania, New Jersey, and Delaware. The team regularly works with the types of foundations, concrete conditions, and basement entrances commonly found throughout the region.
Just as importantly, Tri-State works directly with Steelway products. Steelway manufactures the doors, while Tri-State brings that product knowledge to the jobsite. That connection can be particularly valuable when a project involves unusual measurements, custom fabrication, or additional work to the entrance itself.
The result is a process that begins with the conditions at the home rather than with the assumption that every replacement should follow the same formula.
Quanex is a large global building-products manufacturer serving a broad range of residential and commercial markets. Through its acquisition of Tyman, BILCO now operates within that much larger organization.
There is no reason to assume that a change in corporate ownership alone makes a BILCO product either right or wrong for a particular home. BILCO remains an established brand with a long history in the cellar door market.
What the acquisition does illustrate is that homeowners have choices, and those choices should be based on more than brand familiarity.
Steelway represents a different type of company within the category. Since 1963, the company has remained closely connected to cellar doors and related access products, including both standard manufacturing and custom fabrication. Its experience has been shaped not only by producing doors, but also by the unusual conditions that contractors and installers encounter in the field.
For a homeowner, that specialization can be valuable when the project is not a simple stock replacement.
The important questions remain practical ones: What size is the opening? What condition is the foundation in? Does a standard door fit properly? Would a custom door provide a better solution? Does the surrounding concrete need attention before installation?
Those questions matter more to the success of the project than the name on the existing door.
One of the most common misconceptions surrounding cellar door replacement is that an existing BILCO product must be replaced with another BILCO product. It does not.
The existing manufacturer is useful information, but it should not limit the options available for the replacement. The better approach is to evaluate the entrance as it exists today.
A standard Steelway door may provide the appropriate fit. A custom Steelway door may make more sense for an unusual opening. In some cases, the concrete or masonry may need to be repaired or rebuilt as part of the project.
Every property is different, and older homes in particular may have changed considerably since the original cellar door was installed. The best replacement should be selected for the current condition of the home rather than simply duplicating a decision that may have been made decades ago.
The building-products industry will continue to evolve. Companies will merge, brands will change ownership, and manufacturers will expand into new markets. For homeowners, however, the fundamentals of a successful cellar door replacement remain largely unchanged.
The opening needs to be properly evaluated. The door needs to be manufactured for the application. The foundation needs to be sound. The measurements need to be correct, and the installation needs to be completed properly.
Tri-State Cellar Doors combines local installation and concrete experience with more than 60 years of Steelway manufacturing expertise to provide standard and custom cellar door solutions throughout the Greater Delaware Valley.
Whether the existing entrance has a BILCO door, another manufacturer’s product, or an older door whose manufacturer is no longer known, the first step should be determining what the property actually needs.
If your basement door is rusting, leaking, difficult to operate, or simply ready for replacement, contact Tri-State Cellar Doors to schedule an estimate. Our team can evaluate the existing entrance, recommend an appropriate Steelway solution, and identify any additional work that may be needed to complete the project correctly.