On a building along Ventura's Johnson Drive corridor, a failed flashing at a roof hatch or equipment curb can let water run under the membrane long before a stain shows up inside. We inspect the hatch or curb, the seams around it and the drainage nearby, then decide whether a local repair will do or the roof needs to be opened wider.
The city describes the Johnson Drive corridor as a mixed-use and employment area, with retail alongside light industrial and commercial buildings, and its plans call for better access to the East Ventura Metrolink station. That mix means every property has different access and hours. We confirm the roof entrance, staging area and protection below with the site contact before any material comes off. The area tells us how to plan the visit, not what is wrong with the roof.
The roof hatch and what gets repaired
A roof hatch has several parts: the curb it sits on, the lid and its hinges and latches, and the membrane flashing that seals the curb to the roof. Leaks usually come from the flashing at the curb corners or from the curb itself rotting or rusting. The lid gasket and hardware are a separate issue and are often handled by a different trade.
Our skylight and penetration flashing repairs focus on the roofing side: the curb flashing and the membrane around it. If the lid, hinges or latches need work, we note that separately so the estimate is clear about what the roofer is fixing.
We also check the hatch for safety. Missing guardrails, a broken hold-open arm or a ladder that is not secured are common on older buildings. Those are not roofing items, but we flag them because the crew, your HVAC technicians and anyone else who goes on the roof all use that hatch.
Keeping the roof access usable during the work
The hatch is often the only way onto the roof, so working on it needs planning. We figure out how the crew and other trades will get up while the hatch is being reflashed, whether that means a ladder from outside, a lift or doing the work in stages so the hatch stays usable.
For busy buildings, occupied building reroofing methods apply even to a small hatch repair: keeping the space below clear, protecting the floor and finishes, and scheduling noisy work around business hours.
If the building has medical offices or other sensitive tenants, the facility manager decides when the hatch can be closed and which spaces below need to stay in use. We work within those rules, and the estimate notes any after-hours work they require.
Insulation and deck around the hatch
Water at a hatch usually soaks the insulation right around the curb. Before reflashing, we cut back the membrane and check the insulation and deck at the base of the curb. Wet or crushed material gets replaced so the new flashing sits on a solid, dry surface.
If the wood curb is rotted or the metal curb is rusted through, it may need to be rebuilt or replaced before any flashing goes on. We show you photos and the cost first. Metal curbs that have rusted at the base are common where water has sat against them for years. The same approach applies on buildings near the Victoria Avenue corridor.
Related Roofing Work
Flashing the hatch to the existing roof
New curb flashing has to match the roof membrane and run high enough up the curb to stay above any standing water. Corners get pre-formed pieces or carefully folded patches, which is where many hatch leaks start.
On an EPDM roof, the hatch curb is wrapped with EPDM flashing, primed and seam-taped to the field membrane, and terminated at the top under a metal counterflashing or termination bar. We check every lap before closing up the job.
If the hatch is being replaced with a new unit, the new curb height and size need to work with the roof. A taller curb may need new blocking and insulation around it. We work that out with the GC before ordering anything.
Photos, other openings and urgent repairs
We photograph the open curb, the replaced insulation and the new flashing before the work is closed up. The finished flashing is checked against what was planned. Hatch hardware, ladder or safety rail work by others is recorded separately. Quantities stay tied to the area we actually opened, and we check temporary protection and drainage before leaving the roof each day.
A roof condition report keeps those findings in one place. Other hatches or curbs on the roof may be worth checking if they look similar, but each gets its own inspection before any repair is added to the job.
If a hatch or curb is leaking badly at night, on a weekend or over a holiday, we can make it watertight within the building's access rules. That emergency step is listed apart from the permanent flashing and any hardware work, so the GC can schedule the rest without confusion.
Along the Victoria Avenue corridor and in East Ventura, the same type of curb can need different work depending on its framing and the membrane around it. We open only as much as needed to see the problem, replace confirmed damage and tie the repair into sound roofing.
Common Questions
How do you repair a roof hatch when it is the only way onto the roof?
We plan another way up for the crew and other trades, such as an exterior ladder or lift, or we stage the work so the hatch can still be used. The building contact approves the plan before we start, so nobody is stuck without roof access.
Does a roof flashing repair include the hatch lid and hardware?
Not automatically. The roofer fixes the curb flashing and the membrane around it. A worn lid gasket, broken hinge or bad latch is a separate repair, often done by a different trade. We note those items separately so the estimate is clear.
Who decides when work can happen above sensitive tenants like medical offices?
The facility manager or property manager. They decide when the hatch can be closed, which spaces below need to stay in use and whether any work must happen after hours. We follow those rules and build them into the schedule and price.
Why might the repair extend beyond the hatch itself?
Because water that gets in at a hatch spreads into the insulation around it. If we find wet insulation or a damaged deck past the curb, we show you photos and measurements and explain the added cost before going further.
How do we keep track of roofing work versus hatch hardware work?
The closeout lists the roofing repairs with photos and materials, and lists any hardware, ladder or safety rail work as separate items. That way the owner can see what is done and what still belongs to another trade.
Walk the Johnson Drive roof with us
Send us the property location, the roof area and the leak or repair concern. We will inspect the hatch or curb, confirm access and give you a repair that ties into sound roofing.