Lynwood Commercial Roofing from Downey, CA

Roof hatch leak repair in Lynwood from our Downey crew. We check the hatch curb flashing, the cover and the frame and price the roofing and hardware separately.

Roof hatches leak in a few predictable places: the membrane flashing around the curb, the corners of the curb where the flashing folds, the gasket between the cover and the frame, and the frame itself if it has rusted. On commercial buildings in Lynwood, we see all of these. New flashing around the curb will not stop water coming through a torn gasket, and a new hatch cover will not fix split flashing at its base. We check the roof side and the hatch hardware separately so you pay for the repair that actually stops the leak.

A roof hatch needs a sound curb, a secure cover and clear working room. We inspect the curb flashing and nearby membrane for splits, loose corners or ponding, and keep safe access open while repairs are underway. Replacement hardware is only included when the inspection shows a need. Similar hatch and curb repairs are available at commercial buildings in South Gate.

Find out where the hatch is leaking

On the roof, we look at the membrane flashing on all four sides of the hatch curb, the corners, the top edge where the flashing meets the hatch frame, and the roof around the curb for ponding or open seams. From inside, we look at where the water shows up: drips around the frame often point to the gasket or cover, while stains on the curb walls or ceiling nearby usually point to the flashing.

A roof inspection reports the flashing condition and notes anything wrong with the cover, hinges, latch or gasket. Hatch hardware may be serviced by a different contractor, and we say so clearly rather than lumping it into the roofing price.

Until the hatch hardware is fixed, any leak through the cover will keep going no matter how good the flashing is. We make that clear in the estimate.

We also check the area around the hatch. Hatches get more foot traffic than any other spot on the roof, so the membrane next to them is often scuffed, punctured by dropped tools or worn from ladders and carts. A walkway pad from the hatch to the equipment is a simple way to protect that path.

Prepare the membrane and the curb

To repair the flashing, we remove damaged membrane around the curb, clean and prepare the roof surface and fix any nearby seams that would weaken the repair. New flashing has to bond to sound membrane and run high enough up the curb to stay above any water on the roof. Corners get prefabricated or reinforced patches, since that is where most hatch flashings split.

A good roof repair also checks the insulation around the curb. If it is wet, we replace it. Replacing it can raise the roof slightly, so we confirm the flashing still has enough height on the curb.

If we find more damage than expected, we stop, show you photos, and agree on the change before continuing. The hatch area is protected while you decide.

Coordinate hatch hardware and frame repairs

If the hatch frame is rusted, the curb is too short, or the cover needs replacing, that work should be done before or alongside the flashing. A new hatch may have a different curb height or flange, which changes how the flashing is detailed. We coordinate with whoever is replacing the hatch so the flashing fits the finished unit.

On an EPDM roof, hatch curb flashing is typically uncured EPDM flashing or pre-formed corners adhered with primer and tape, terminated under a metal counterflashing or termination bar at the top. If the hatch is being replaced, the termination detail may change, and the estimate should say which one you are getting.

If the hardware work is delayed, we seal the flashing so it sheds water in the meantime, and list what is still needed to finish.

Keep roof access safe during the work

A commercial roof hatch in Lynwood needs a sound curb and a safe route to the roof. We inspect curb flashing, cover, hinges and nearby membrane for movement or open seams, keep the access path open during repairs and protect the space below. Hardware is included only when inspection shows it needs replacement. We also repair hatches and curbs in South Gate. We record curb dimensions before ordering any replacement parts.

When comparing estimates, check whether each one covers just the flashing or also the hatch hardware, and whether wet insulation is included. We price them separately so you can see the difference. We also work on commercial roofs in Compton, with each building inspected on its own.

We offer emergency leak response at night, on holidays and on weekends. A temporary seal at the hatch stops the water; it does not replace a worn gasket or rusted frame, and our paperwork says so.

Photograph the curb before it is closed up

Before the new flashing is finished, we photograph the cleaned curb, any insulation we replaced and the flashing as it goes in. After that it is hidden, and the photos show what was done.

They go into your roof asset management file with the hatch location marked. Hardware issues passed to another contractor are listed as open until they are fixed.

A hatch repair that lasts covers the flashing, the curb and the hardware. We price each piece clearly so you know what you are paying for.

If the hatch is also your main roof access, it is worth checking the safety rail and the latch at the same time. Those are not roofing items, but we will note anything that looks unsafe so the right contractor can look at it.

Commercial Roofing Questions

How do I know if the hatch leak is the flashing or the hatch itself?

Drips around the cover or frame usually point to the gasket or hardware. Stains on the curb walls or nearby ceiling usually point to the flashing. We inspect both to be sure.

Can the existing hatch stay while the flashing is repaired?

Yes, if the frame and curb are sound. If the frame is rusted or the curb is too short, it is better to replace the hatch first and flash to the new unit.

What should a hatch flashing repair estimate include?

Removing damaged flashing, preparing the roof around the curb, reinforced corners, any wet insulation, and new flashing run high enough up the curb. Hardware work should be listed separately.