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Skylight and Penetration Flashing in Chandler, AZ
Skylight and roof penetration flashing in Chandler, AZ: finding the leaking curb or pipe, repairing damaged backing and installing compatible flashing that lasts.
Pipes, vents, conduit and skylights are where most commercial roof leaks begin. Every one is a hole in the roof that relies on flashing to stay dry, and Chandler's heat makes sealants and old boots crack faster than you might expect. When a plant or office has a leak near a penetration, we check that specific pipe or curb, the roof around it and any old patches. Then we decide what needs to be fixed and who should do it.
Industrial buildings around the Intel Ocotillo campus can have dozens of process pipes and exhaust stacks on a single roof. We mark each one on a roof plan and check it individually. Some fixes are purely roofing work. Others need a mechanical contractor to reset a pipe or a skylight installer to repair the unit itself. The proposal makes clear which is which, so the new flashing isn't expected to solve a problem that lives in the component.
Finding the leaking penetration
A ceiling stain doesn't always sit right under the leak. Water can travel along the deck or insulation before it drips. We start with the penetrations closest to the stain, but we check each one on its own. That means looking at the flashing, the sealant, the pipe or curb itself and any old patches. Every penetration gets marked on the roof plan with what we found.
A roof leak repair visit often starts with a water test or a closer look at the most likely spots. If we can't pin down the source on the first visit, we say so and explain the next step. When several penetrations sit near one leak, we don't reflash all of them by default. We fix the ones that are actually failing and note the condition of the rest. That keeps the cost tied to the real problem and gives you a clear picture of what to watch.
Skylights and curbs
Skylight leaks can come from the roof flashing around the curb, or from the skylight itself: a cracked dome, a failed gasket or a rusted frame. We check both. Roof flashing is our work. Repairs to the skylight unit usually go to the manufacturer or a glazing contractor. We tell you which one is causing the leak so the right trade gets the call.
Skylight curbs are like equipment curbs: if the wood is rotted or the curb is too short, new flashing won't last. Where we find damaged curb material, we price the repair separately and complete it before reflashing. If the skylight unit needs work first, we schedule around it. A roof repair doesn't mean the skylight itself was inspected or fixed, and we spell out what our work covered so nobody assumes otherwise.
Pipes and flashing materials
Pipe flashings come in several forms: preformed boots, field-wrapped membrane, pitch pans and liquid-applied systems. The right one depends on the pipe size and shape, how close it sits to other pipes or walls, and the roof membrane around it. A simple round vent can take a standard boot. A cluster of conduit or an odd-shaped bracket usually needs a liquid-applied flashing.
Products from manufacturers like SOPREMA are one option for tricky penetrations. SOPREMA describes its ALSAN Pre-Cut Fleece as polyester reinforcement made in pipe and corner shapes for use with its liquid resin. We check each pipe against the product instructions before choosing it, because pre-cut shapes don't fit every situation. The proposal names the product for each penetration and the prep it needs.
Prep under the new flashing
New flashing is only as good as what it's attached to. Before flashing, we cut out damaged membrane around the penetration and remove old sealant and failed patches. We also replace any wet insulation and make sure the surface is clean and solid. If the pipe itself is loose or corroded, it may need attention first. The proposal shows that prep, not just the flashing.
On a PVC roof, for example, we use compatible PVC flashing materials heat-welded to the existing membrane, and we clean and prep the old membrane so the weld holds. Civic and office buildings around South Arizona Avenue often have years of mastic patches at penetrations that need to be removed first. If the damage turns out to be larger once we open it up, we show you and update the price before going further.
Getting the order right
Some penetration repairs need another trade first. A mechanical contractor may have to cut or extend a pipe, an electrician may need to reroute conduit, or a skylight supplier may have to replace a dome. We confirm those tasks and their timing before our crew shows up. We also confirm access and staging with the building contact so the crew knows where to park and how to get onto the roof.
In a building that stays open, penetration work follows the same approach as reroofing an occupied building. We plan around the people inside and never leave an opening exposed. Even a small job with three or four pipes can involve several steps and trades. We list them in order so the crew doesn't arrive to find a pipe that hasn't been cut or a unit that's still running. If something outside our scope remains unresolved, we tell you who needs to handle it.
Recording each repair
When the work is done, we mark each repaired penetration on the roof plan and list the flashing product used. We photograph any curb or backing repairs before they're covered, and note the existing roof left around each detail. If the plan changed during the job, we record what changed and why. Items still open, like a skylight unit waiting on the manufacturer, are listed separately.
For buildings near the Intel Ocotillo campus and across Chandler, that record makes future work easier. When a pipe is added or moved, the next contractor knows what flashing is already there and how it was installed. If a leak shows up later, it can be checked against the repair list. A photo of a finished boot is helpful, but the product and repair notes are what the next roofer needs.
Commercial Roofing Questions
What do you check before reflashing a penetration on a Chandler roof?
The pipe or curb itself, the existing flashing and sealant, the roof membrane around it and any old patches. That tells us whether the problem is the flashing, the component or both.
Does fixing the roof flashing around a skylight fix the skylight?
No. We repair the roof flashing and curb. A cracked dome, failed gasket or rusted frame needs the skylight manufacturer or a glazing contractor, and we'll tell you if that's the problem.
Will a pre-cut pipe flashing fit every penetration?
Not always. We check each pipe's size, shape and spacing against the product instructions and use a field-formed or liquid flashing where a pre-cut piece won't fit.
What if the curb or backing under the flashing is damaged?
We price the repair separately and complete it before installing new flashing. If the damage is larger than expected once opened, we show you and update the price first.
What records do we get after penetration repairs?
Each repaired penetration marked on the roof plan, the flashing product used, photos of hidden repairs, and a list of open items for other trades.
Get your penetrations checked
Tell us where the leaks are and which pipes, curbs or skylights you're worried about. We'll check each one and give you a clear repair plan, including any work another trade needs to do first.
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