Basements can be transformed into a variety of functional living spaces. You can use them as a home theater, a gym, a bar, a bedroom, a playroom, or a craft room. Basements can also serve as storage rooms or emergency shelters. For some, it may be helpful to access the basement from outside; to do this, you'll need to install a cellar door.
What Is a Cellar Door? (Basement Door Overview)
A cellar door is an exterior door installed on your home to provide access to a basement or cellar, typically at a sloped angle. Other common names include basement bulkhead or hatchway. These doors are especially useful for moving large items, improving ventilation, or creating a secondary exit in case of emergency. They also help keep your basement protected from the elements, pests, and intruders.
When it comes to choosing a reliable and durable cellar door, Bilco stands out as one of the most trusted names in the industry. Known for their rugged construction and weather-resistant materials, Bilco doors are available in heavy-duty steel or corrosion-resistant polyethylene. Some models feature powder-coated steel. Learn more about the benefits of Powder-Coated Basement Doors.
Types of Basement Doors from Bilco
Bilco offers three types of basement doors that enable you to add a code-compliant living space or storage area to your home. Here's a quick overview:
Classic Series Basement Doors - Durable Steel Construction
The most basic and popular option, the Classic Series features a steel door with a primed finish. Available in Bilco door sizes B, C, O, and SL, these large, easy-to-operate basement doors make it simple to move furniture or other large items in and out of the basement. The Classic Series is also available with a powder-coated finish for added durability, weather resistance, and no need for painting after installation.
BR Sloped Wall Doors - Basement Doors for Angled Foundations
This version is designed for installations in areas with sloped sidewalls built into a home’s foundation. The doors can be mounted on brick, stone, block, or poured concrete sidewalls and come with installation instructions and hardware.
Ultra Series Basement Doors - Rust-Free Polyethylene Design
Bilco's Ultra Series Basement Doors feature a polyethylene construction that will never rust, rot, or require painting. The driftwood color and simulated wood texture complement your home's exterior. Interchangeable side panels allow you to add light or ventilation to the basement area.
Top Benefits of Installing a Cellar Door
- Easy to Operate: Gas spring operators and supplemental coil springs counterbalance the doors for smooth, easy use. The doors are designed not to slam shut.
- Weathertight: Flanged construction sheds water and prevents binding due to ice or snow, keeping the basement entry dry and debris-free.
- Durable: Classic Series doors are finished with a Sherwin-Williams primer or optional powder coat. Ultra Series doors are made from corrosion-resistant, high-density polyethylene.
- Secure: Internal mounting flanges help keep your home secure.
- Code-Compliant: Meets IRC Building Code requirements for emergency egress in finished basement areas.
Step-by-Step Guide to Basement Door Installation
Once you've chosen your cellar door, it's time to begin installation. Instructions are included with each door.
1. Remove Old Door and Frame
Start by removing the old door and frame. Use a grinder to cut through hinges or a chisel to remove fasteners. Removing the doors first makes it easier to take out the frame.
2. Prepare the Foundation
Basement door foundations are typically concrete. If the surface is uneven or damaged, mix grout, mortar, or sand mix concrete in a bucket. Wet the surface with water, then apply the mix to level the foundation.
If the foundation is brick or stone, use a foundation plate for smooth operation. Place the plate, mark and cut to length, then touch up ends with primer or sealant to prevent rust. Drill holes using a masonry bit and fasten the plate with sheet metal screws and anchors.
3. Assemble and Install Frame
The frame includes two side pieces and two rails. Connect them with 1/4-inch bolts and nuts, with the bolt heads facing outward.
Mark and drill mounting holes using a masonry bit, then insert anchors. Set the frame on the foundation, ensuring it's square and level. Attach it to the house using screws through the center hole. Do not attach the frame to the foundation yet; the doors must be installed first.
4. Install the Cellar Doors
Slide the door bushings over the frame pins, followed by the catch rods. Ensure the doors do not bind or catch on the hinges. They should line up evenly and move smoothly.
5. Finalize Basement Door Installation
With the doors in place, drill 1 3/4-inch holes into the foundation and fasten the frame, ensuring everything stays square and level. Seal the frame with caulk to prevent air and water intrusion.
If your door has a fiberglass or powder-coated finish, installation is complete. If it's primed steel, finish it with alkyd base metal enamel paint.
6. When to Hire a Professional for Basement Door Installation
Installing a basement door yourself can save money; however, if your home has foundation issues, wood rot, or water damage, it may be best to hire a professional. A contractor will ensure the door is installed correctly and safely.
How to Lock Your Basement Door with a Cylinder Lock Kit
To lock your basement door, you'll need to install a Cylinder Lock Kit. Installation instructions are included with the kit and are also available on the product page. To unlock the door from the outside, simply use the key. To unlock it from the inside, push the hand release lever; this will automatically release the lock. To lock the door from the inside, slide the locking bar into position.
Please note: The Bilco Basement Door Cylinder Lock Kit is only compatible with Bilco Classic Series Basement Doors. It is not compatible with Bilco Ultra Series Doors.
Conclusion: Choosing the Right Cellar Door for Your Home
A cellar door provides convenient access to your basement from the outside. Choose between the Classic and Ultra Series based on your needs and budget. These doors are durable, easy to operate, and enhance security. Installation is manageable with the right tools and a level foundation. For added security, consider purchasing a compatible lock kit.