Hatch and frame replacement
A correctly sized steel or composite unit is fitted to the existing opening, or the opening is rebuilt to accept a standard size.
Exterior basement entrances · Greater Burlington
Bulkhead and cellar door replacement: stop the leak
A bulkhead is a hatch, a frame, a masonry stairwell and a drain working together. Water usually gets in because one of those four has failed, so replacing only the visible door often leaves the actual leak untouched.
No phone call needed.
What this service includes
Leaking bulkheads usually trace to a rusted or warped door, a failed seal where the frame meets the foundation, deteriorated stairwell masonry, or a stairwell drain that no longer carries water away. Replacement should address the frame-to-foundation joint and the drain, not just the hatch. In Vermont the same stairwell fills with snow and ice, so the drain and the door's ability to shed water matter year-round.
Common reasons homeowners call
Problems this service can fix
Water on the basement floor near the bulkhead door
A rusted, bent or no-longer-closing steel hatch
Standing water in the stairwell after rain
Rotted wood framing or a deteriorated door at the bottom
Cracked, spalling or loose stairwell masonry
Ice building in the stairwell through winter
Daylight or draughts visible around the closed door
Repairs and systems
Repairs and systems
Frame-to-foundation sealing
The joint where the frame meets the foundation is prepared and sealed, which is where a large share of bulkhead leaks actually originate.
Stairwell drain
A blocked or missing drain is cleared, replaced or newly installed and connected to an outlet that can actually take the water.
Masonry repair
Cracked, spalled or loose sidewalls and treads are repaired or rebuilt so the stairwell sheds water instead of holding it.
Interior basement door
The inner door at the base of the stairs is replaced or weatherstripped so the stairwell is not the only barrier.
Grading and runoff correction
Soil and hard surfaces around the stairwell are corrected so surface water is not directed into the opening.
Matching the option to the condition
Bulkhead work by part
The stairwell drain often decides whether a new bulkhead stays dry. Confirm it first.
| Part | Work | What to confirm first |
|---|---|---|
| Hatch and frame | Hatch and frame replacement | Measured size, since it is rarely standard |
| Frame-to-foundation seal | Sealing the joint | That the masonry is sound |
| Stairwell floor | Stairwell drain | Where the drain goes |
| Masonry | Masonry repair | Condition before sealing |
| Interior door | Interior basement door | Second barrier against water and drafts |
- 01
Where the water actually appears first
- 02
Condition of the hatch, frame and hinges
- 03
The frame-to-foundation joint and any prior sealant
- 04
Whether a stairwell drain exists and where it goes
- 05
Masonry condition of sidewalls and treads
- 06
Surrounding grade, downspouts and hard surfaces
Your estimate
What is included in the plan
The drain decides the outcome
A new door over a stairwell that cannot drain will still flood, and confirm the drain exists, flows and terminates somewhere legitimate.
Size is rarely standard
Older Vermont bulkhead openings often do not match a stock unit, and the estimate should say whether the opening is being modified.
Two barriers, not one
The inner basement door is a second line of defence, and replacing the outer hatch while leaving a rotted inner door leaves the basement exposed.
Ice and snow
A stairwell collects drifting snow, and meltwater against a closed hatch with a frozen drain is a common February leak.
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Compare the complete bulkhead & cellar door replacement scope.
Sources and Vermont specifics
The grade at a bulkhead is a code question, not only a carpentry one
A bulkhead sits at the lowest point of the wall, so it collects whatever the ground sends toward it. The model residential code requires the ground around a foundation to fall at least 6 inches within the first 10 feet, with surface water directed to an approved collection point. Where a bulkhead stair well cuts into that slope, the grading has to be rebuilt around the new unit or the door will leak at the sill again within a few seasons.
When comparing replacement proposals, ask three questions. Does the price include regrading and drainage at the stairwell? Is the door or hatch to be sealed against the curb, and with what? And who is responsible for the masonry curb if it is cracked? Written answers separate a door swap from a repair that will hold through a Vermont spring.
Sources: InterNACHI, Foundation Fundamentals: IRC R401.3 drainage. Checked September 26, 2026.
Common questions
Bulkhead & Cellar Door Replacement FAQs
Why does my bulkhead leak even with a new door?
Most often because the leak was never the door. Water commonly enters at the joint where the frame meets the foundation, or it collects in a stairwell whose drain is blocked. Both continue after a new hatch is installed over them.
Does a bulkhead stairwell need a drain?
It needs somewhere for water to go. A stairwell is an open basin cut below grade; without a working drain it collects rain and snowmelt against a door that was never designed to hold back standing water.
Can a bulkhead opening be closed off permanently?
Sometimes, if the opening is not a required exit and the foundation can be properly closed and waterproofed. That is a structural and code question, not just a masonry one, and it should be confirmed locally before proceeding.