Service Areas
Commercial Roofing in Pacific, WA
On a Pacific job the first look goes to the ground, not the roof, because the staging area decides how the rest of the job runs. Pacific lies mostly in King County along the White River between Auburn and Sumner, with a portion annexed from Pierce County in 1995. It had 7,235 residents in 2020, covers 2.44 square miles and sits at 72 feet of elevation. In January 2009, major flooding hit the city after Mud Mountain Dam released water into the White River.
That history matters to a roofing plan for one reason: a river-valley lot at 72 feet of elevation may have soft or wet ground, and that changes where a crane stands, where trucks turn and where material can sit overnight. The roof itself is judged the way any commercial roof is. We map it, cut cores, test the drains and write a repair list. But before the crew leader signs off on a start date, he walks the lot and marks where the crane pad, the lay-down yard and the dumpsters can go without sinking or blocking a way out.
Where do the crane, trucks and material stand on low ground?
A crane pick needs a firm, level footprint, and a lot that stays wet through winter may not give one. We look at the paving, the base under it and the nearest drain, and when the surface is questionable, we lay mats or choose a position on the pavement closest to the building. Truck turning paths are drawn on the plan so a delivery does not cut a corner of soft ground and leave a rut, and the driver gets that sketch the day before.
Material stays on pallets above the pavement and under tarps, with a weather plan for every day it sits outside. In the wet months we ask for deliveries timed to the install so insulation and membrane do not wait in the open. The same discipline that protects a roof in progress protects the product before it goes up, since wet insulation is the first thing that ruins a dry-in.
What does the first walk on a Pacific roof include?
We start with the plan, the hatch and the drains. Cores are cut across the field and at the low corners, and each core shows the layers, the insulation condition and the deck. We press the seams, check the parapet and wall flashings, and photograph every curb and penetration. An infrared moisture survey can map wet insulation across a large roof without cutting dozens of holes, and the cores then confirm what the scan found.
The result is a marked roof plan with each problem labeled and a priced repair list. The list puts interior protection first and leaves the work that can wait for the dry months at the end. Owners tell us which spaces below the roof are most sensitive, so the first temporary seal goes where a leak would cost most. Where the building holds records, inventory or electrical gear, those rooms go first on the list, and we mark them with the facility contact's name so the whole crew knows who to call if water appears.
How does river flooding bear on a roofing job?
A roof sits above a flood, but the aftermath still reaches it. After high water, a building may be closed, mechanical equipment may be replaced, and trades compete for access. A reroof planned while a building recovers needs to coordinate with that work, so the crew does not set a curb that the mechanical contractor then has to move. A flashing failure repair at a replaced unit is the second visit that a short meeting before the work can prevent.
Owners who hold several buildings can have the roofs graded so the worst is handled first. That grading, with age, condition and the next action for each building, is the kind of record a manager keeps in a roof condition report and carries into a capital plan.
We also document the roof's condition before and after such an event. Dated photographs and moisture readings give the owner a record that separates roof problems from ground-level damage, which keeps insurance conversations clean. If a leak shows up after the same weather, the record shows what the roof looked like before it.
How much rain should the schedule expect?
Auburn, the next city along the river, is heaviest in November and December and lightest in July, and Tacoma has roughly 155 wet days a year. Perimeters here are fastened against gusts like the 74 mph that Enumclaw reached in the November 2024 bomb cyclone, the highest anywhere in Washington.
A winter tear-off uses a small open area, sized to what can be insulated, covered and sealed before evening. A summer tear-off can run larger sections. In either season, a temporary seal is staged before the first panel comes off, and the crew leader checks it at the end of every shift. Tie-ins to the existing roof are made last, after the edge has been inspected and the new membrane is secure.
Which roof systems suit a valley building?
Most low-slope commercial roofs end up with one of a few systems. A welded TPO roofing system gives wide sheets and heat-welded seams. Modified bitumen gives a thicker, multi-layer surface that tolerates foot traffic around rooftop equipment. A standing seam metal roof is a longer-lived choice when the structure allows it.
The decision comes from the core results, the amount of rooftop traffic and the owner's time horizon. A building planned for a short hold may not justify the premium of a longer system, while a long-term owner may prefer it. We show the options side by side, and the same format lets a roof in Auburn or Sumner be compared with one in Pacific.
Commercial Roofing Questions
Does flooding in the valley change how you plan a roof job?
It changes the ground plan more than the roof plan. We check the lot for soft areas, plan the crane pad and truck paths on firm pavement and keep material off wet ground. The roof work is sequenced as it would be anywhere, with a dry-in plan for every day the roof is open.
What records should I keep after a high-water event?
Keep dated photographs of the roof and the interior, the date of the last roof inspection and any repair invoices. We add moisture findings from the roof and a written scope. Together they separate roof defects from ground-level damage when an insurer asks.
Can an infrared scan replace core cuts?
No, the two work together. The scan maps where heat patterns suggest wet insulation, and the cores confirm the finding and show the layers. Together they let us size a repair to the wet area instead of replacing the whole roof by default.
How do you protect rooftop equipment during a reroof?
Mechanical units are flashed and counter-flashed in sequence, and the curbs are checked for height and condition before the new membrane goes down. If a unit has to be shut down, we schedule the window with the tenant and the mechanical contractor ahead of time.
When is the best time of year to reroof here?
July is the driest month in nearby Auburn, so large tear-offs belong in the summer when the roof can wait. A leaking roof does not wait, and we dry it in at any time of year with a temporary repair and plan the permanent work for a better window.
Send the roof plan and a photo of the lot
Send the roof plan, a photo of the lot where the crane and trucks would stand, and the hours when the building can be reached. We will walk the sequence, staging and tie-ins with your superintendent before a number goes on paper.
