Bulkhead Repair: Fix It, Replace the Door, or Rebuild?

Bulkhead repair, in New England, means fixing the slanted outside cellar door and the concrete stairwell under it. Most bulkhead problems fall into one of three jobs: repair a part of the door you have, replace the door on a sound stairwell, or rebuild the whole entry when the walls, sill or steps have failed. Which one you need depends on the steel and on the masonry under it.

This guide walks through what a basement bulkhead is made of, the signs that each part is failing, simple bulkhead maintenance, and how to decide between a fix and a replacement.

One note on the word: a waterfront "bulkhead" is a seawall along a shoreline. That is a different structure and a different trade. Everything here is about basement bulkheads.

What a basement bulkhead is made of

• The door. Usually two sloped steel leaves on a frame. Older homes may still have wood doors.
• The sill. The concrete or masonry top of the stairwell walls that the door frame is fastened to. If it crumbles, nothing seals.
• The side walls. Poured concrete, concrete block, or a one-piece precast concrete stairwell set in the ground.
• The steps. Concrete, precast or stone, down to the basement.
• The bottom. A landing, sometimes with a drain, and an inside door into the basement.

These parts wear out at different rates. Rain, snowmelt and de-icing salt eat at the steel. Freeze-thaw cycles work on the concrete every Massachusetts winter. That is why the right bulkhead fix is often more about the stairwell than the door.

Signs your bulkhead needs repair

• Surface rust or peeling paint on the steel.
• Rust that has gone all the way through, leaving holes or thin spots.
• Bent or warped door leaves that no longer meet or close flat.
• A door that won't stay open, slams shut, or won't latch.
• Soft, rotted or split wood on an older wood door.
• Water coming in under the door frame or down the walls.
• A cracked or crumbling sill under the frame.
• Cracked, leaning or shifted stairwell walls.
• Broken or crumbling steps.
• Water pooling at the bottom of the stairs after rain.

Repair, replace the door, or rebuild?

Repairs that make sense

If the steel is solid and only one thing is wrong, a repair is usually worth it. Surface rust can be wire-brushed to bare metal, primed with a rust-inhibiting primer and repainted. Worn weatherstripping, a broken handle or a tired lift spring can often be replaced, and our post on bulkhead door replacement parts explains which parts are available. A gap between the frame and the sill can be resealed. If the problem is a leak, start with our guide to why bulkheads leak, because the water often isn't coming through the door at all.

When the door needs replacing

Replace the door when the steel has rusted through, the leaves are bent, or the door no longer closes and latches, and the stairwell under it is still sound. A new door has to fit the opening and sit on a solid sill. Our post on basement bulkhead replacement walks through how a door swap is done, and bulkhead door types covers the choices.

When the entry needs a rebuild

A new door on a failing stairwell is money spent on the wrong part. When the side walls are cracked or leaning, the sill has broken up, or the steps are crumbling, the lasting fix is to dig out and rebuild the stairwell, then set a new door on it. See bulkhead stair replacement for how that work goes.

A quick check you can do yourself: scrape the sill where the frame sits, look along the side walls for cracks or shifted blocks, and step on each stair. If all three are solid, you are likely looking at a door repair or replacement. If not, plan for masonry work.

Bulkhead maintenance that prevents most repairs

• Look the door over each fall and spring. Touch up chips and rust spots before they spread.
• Keep the hinges and moving parts working smoothly so the door isn't forced.
• Clear leaves out of the bottom of the stairwell and keep any drain open.
• Make sure no downspout empties near the bulkhead, and that the soil and any walkway slope away from it.
• Don't pile shoveled snow or salty slush on the door. Salt speeds up rust on steel.

Walkout basement entries

Some homes have a walkout, a regular door at ground level into the basement, instead of a sloped bulkhead. The repairs are similar in spirit: keep water from running toward the door, keep the threshold sealed to the foundation, and fix any retaining walls or steps beside it. Water pooling in front of a walkout usually comes back to grading and drainage.

When to call a mason

Call when the problem is in the concrete or block, when the door needs replacing, or when water keeps getting in after you have handled the simple things. Gerrior replaces bulkhead doors, rebuilds stairwells and sills, installs new bulkheads, and fixes the drainage around them. Bilco and Gordon are among the door brands shown on our site. Owner Joseph Gerrior oversees each job. Learn more on our foundation and bulkhead repair page, and see what moves the price in our bulkhead replacement cost guide.

"Gerrior replaced our bulkhead and the surrounding blocks and refinished the steps. They started and finished in a very timely manner. Extremely pleased with the quality of their work, and they left our property in excellent shape." Bulkhead replacement customer (review on gerriormasonry.com)

Common questions

Can a rusted bulkhead door be repaired?

Yes, if the rust is on the surface. Once it has rusted through, or the frame is rotting at the sill, replacement is the better value.

Is bulkhead sealing a do-it-yourself job?

Resealing the joint between the frame and the sill, or replacing weatherstripping, is a reasonable homeowner task. Cracks in the walls or a crumbling sill need a mason.

Can you replace the door without replacing the stairs?

Yes, as long as the walls, sill and steps are sound. That is the most common bulkhead job.

Do you repair waterfront bulkheads or seawalls?

This post is about basement bulkheads and the masonry around a house. Shoreline structures are often handled by marine contractors, so if you have one, ask us whether it fits your project.

If your bulkhead is rusting, leaking or crumbling, we can look at the door and the stairwell and tell you which of the three jobs it really needs. Gerrior Masonry & Landscape Construction Corp. is a family-owned company in Woburn, MA, with over 30 years in masonry and drainage work. We are fully insured, our work is guaranteed, and estimates are free. Call (781) 933-4157 or request a free estimate.