Property Types We Roof
Flex and Light-Industrial Building Roofing in Federal Way, WA
On a flex building the superintendent starts with the tenant list. He finds out which suites are office, which are shop or light assembly, and which share a wall with a neighbor who cannot tolerate dust. Then he walks the deck, because the roof over an office front and the roof over a rear warehouse bay can be different systems with different histories.
Flex and light-industrial space runs through the Federal Way, WA area, from the Woodbridge industrial park, which Industrial Realty Group is developing on about 63 permitted acres of the former Weyerhaeuser campus, to the Kent Valley and Fife, and the Federal Way West Campus business park keeps its former headquarters building and open meadows while industrial buildings are added. We plan the tear-off limits suite by suite and walk the sequence with the property manager before pricing.
What does the first walk of a multi-tenant flex roof show?
The superintendent walks the deck with the lease plan beside the roof plan. Cores come from the low corners, the drains and the spots under rooftop units, and pull tests grade the existing attachment. He marks every unit with the suite it serves.
Flex roofs collect small changes: a tenant adds an exhaust fan, another adds a dock door and a third cuts a skylight. Each change is a penetration or a tie-in, and each can leak. The marked plan lists them all, with a ranking by what sits below, so the manager can see which suites need attention first. A roof condition report keeps the plan on file. When a building is new, such as the two buildings in Woodbridge's first phase, the first-year walk matters most: settling, fasteners and drain performance all show up in the first winter, and the punch list from that walk is cheaper to fix while the warranty is fresh.
How do you set tear-off limits above live suites?
The limit line is painted each morning at the point the crew can close in before shift change. Above an office suite the sections are small, with ceiling protection hung before tear-off. Above a shop bay the sections follow the tenant's work schedule.
We ask the tenants which areas hold sensitive equipment or stock. A bay that stores finished goods gets poly and a catch deck first. Ahead of forecast rain the open edge is sealed temporarily and inspected by the crew leader before the crew leaves the roof. No suite sits under an open roof overnight, whatever the tenant mix. When one tenant needs a quiet hour for a call or a calibration, the crew leader shifts the loud steps to another part of the roof and notes the change on the plan, so the manager and the tenant both see the same schedule.
Where do the crane, trucks and lay-down yard go in a business park?
Business parks share drives, docks and parking, so the staging plan names every neighbor. The lay-down yard goes at the end of a building or in a rented corner of the lot, and the crane pick is scheduled for early morning before the tenants arrive.
Truck courts stay open for deliveries. Fire lanes and hydrants stay clear. Industrial space in Kent, where the valley is mainly industrial and commercial, and in Tukwila, where the Prato District is a 320-acre mixed-use office, manufacturing and retail area, puts different tenants side by side, so the manager approves the plan in writing.
What is the order from tear-off to dry-in on a flex roof?
A section runs in order from tear-off to deck check, board repair, insulation, membrane and edge seal. The office front often has a different assembly than the rear, so the crew confirms the layers before ordering material.
A TPO roof is common on flex buildings, since the seams are welded and repairs are straightforward when a tenant adds a unit. Cover board goes down where service crews walk. Rooftop equipment is lifted and reset with new curbs and flashing, and a rooftop equipment curb that fails the pull test is replaced, not patched. Insulation thickness and wind attachment follow the 2021 International Building Code, as Washington adopted it with amendments, and the 2021 energy code for commercial buildings, before material is ordered.
How are tilt-up walls, parapets and edges tied in?
Flex buildings often have concrete or masonry walls with a parapet and a coping. The wall termination, the counterflashing and the coping joint are all drawn on the plan before work starts. Dock doors cut into the rear wall add head flashings of their own, and the overhead door tracks sit right below, so we check each head before the new membrane goes down and again at the closeout walk. A failed flashing at a parapet is the usual source of a stain on an office wall.
The November 2024 bomb cyclone sets the bar for edge securement, with 74 mph winds recorded on Enumclaw, the highest of any Washington community. Edge attachment is pull-tested, and the results join the product data and warranty paperwork in the closeout file.
How do you keep tenants working during the reroof?
Tenants run on their own schedules. A call center, a cabinet shop and a lab can sit under the same roof. We post a short notice at each suite door, with the work hours and the area affected, and give the manager a daily plan.
Noisy steps happen in mid-morning or on a weekend if the manager approves. Dust and fumes stay out of the intakes. The method follows occupied building reroofing practice, and a tenant with a special need, such as a clean room or a paint booth, gets a call from the crew leader before work starts.
What happens at the closeout walk?
A final pass over the roof brings the property manager and our crew leader together. Seams, curbs, drains and edges are checked, and any open item is painted at its spot. In the file are photographs of concealed layers and the fastener pattern, plus product data and warranty paperwork.
Owners with several parks can use the same file format at each, and a warehouse roof and a distribution center roof in the same portfolio follow the same sequence, with differences in dock traffic and stored goods.
Commercial Roofing Questions
Can all tenants stay open during a flex building reroof?
Usually yes. We work in sections, protect ceilings below the open area, schedule loud steps away from sensitive suites and give each tenant notice. The property manager approves the daily plan, and we adjust if a tenant has a deadline that changes the order.
What happens when a tenant adds a rooftop unit later?
We recommend the tenant's contractor coordinate with the roof manufacturer's rules and the roofer on record. A new curb and flashing are drawn on the roof plan, and a walkway pad goes in. Unplanned units are the leading source of punctures and leaks.
Do office fronts and rear bays need different systems?
Sometimes. Cores show the existing layers in each area, and we match the new system to the deck, the insulation and the use. One membrane can cover both when the substrates allow, with the tie-in drawn on the plan.
How do you protect finished goods stored in the bays?
We confirm with the tenant which aisles sit under the work. Poly and a catch deck go up before tear-off, and the crew seals each section before leaving. If rain moves in, the crew stops and seals the open area.
What roof records help during a lease turnover?
A roof plan marking each repair and date, core locations, fastener patterns, product data and warranty paperwork. Photos of the concealed layers sit in the same file. A new tenant or buyer can see the roof's condition and history without a new survey.
Send the roof plan and the tenant list
Send the roof plan, the tenant list and the lease dates that matter. We will walk the sequence, staging and tie-ins with your property manager before a number goes on paper.
