Roofing for Manufacturers in Queens, NY

What does the plant see first, and what should be logged?

The plant reports a drip, a wet floor, a rust stain on a beam, a stained insulation blanket or a sprinkler line that sweats, and each suggests a different entry. A drip that follows rain and lands in one spot means a fixed entry nearby. A drip on cold mornings above a hot process means condensation, and a rust streak under a roof penetration means that flashing has failed.

We ask the plant to log the bay, the date, the weather and the process running at the time, with a photograph. Matched against the roof plan, that log shows whether we are looking for one entry or several, and whether the cause is rain or process moisture rising from below. Treating the wrong one wastes the repair.

One more clue sits on the deck's underside. Rust blooms, wet insulation and condensation lines on the metal indicate something other than a roof opening, while a dry underside beneath a drip that grows after rain puts the entry above.

What is happening on a plant roof?

Manufacturing roofs carry more than weather. Process exhaust, makeup air, dust collection and cooling equipment sit on curbs that have to be flashed and kept tight. Hot, damp or chemical-laden air leaving a roof fan can attack the membrane around it, and a film of oil or solvent softens some materials. A roof over a wet process takes humidity from below as well as rain from above.

Curbs at the large units come first, since vibration wears out their sealant. Drains and strainers follow, because a wide plant roof sheds water through few outlets, and then the seams, the edge and the parapet flashing. A manufacturing plant roof that has been patched around equipment for years often wants a survey before any new repair.

Penetrations multiply over the years. Each new line of equipment adds a curb, a duct or a conduit run through the roof, and old ones are rarely removed when a line closes. We number every penetration on the plan, confirm which are live and recommend removing and capping the rest, which lightens the roof and removes leak points.

Where does Queens manufacturing sit, and what does that say about roofs?

Industry in Queens spreads across several districts. Industrial lowlands carry the Maspeth Industrial Center, which the freight-only LIRR Bushwick Branch crosses. About 550 acres at College Point were set aside for the corporate park founded in 1974, which held more than 200 companies by 2003. Long Island City holds many former factories and bakeries converted to new uses, and the Degnon Terminal in Sunnyside is a rail-served industrial complex built out largely by 1912. Businesses in Whitestone have included Lee Kum Kee, Glaceau and White Rock Beverages, and in New Hyde Park, Stock Drive Products and Sterling Instrument, now owned by Designatronics, still manufacture mechanical components.

That is where plants have stood and stand, not what any one roof is made of. An older plant may have a built-up roof with several recovers, and a newer one a single-ply membrane. Owners in Maspeth and College Point start with a core and a scan.

Conversions raise their own question. A former factory or bakery that now holds studios, offices or light manufacturing still wears the roof it had before its use changed. We check the existing assembly against the new use, since a roof designed for one kind of floor load and exhaust pattern may not suit another.

How do we work around production and shutdown windows?

The roof plan follows the production plan. We ask for planned shutdowns, shift patterns and any process that cannot stand dust, vibration or noise, and then place the loudest work in the quiet windows. Rooftop equipment that must be lifted or relocated is coordinated with the mechanical contractor, so the shutdown is short and planned.

The roof is worked in sections, each dried in by the end of the shift. Interior protection goes up over sensitive equipment, and fire safety is part of the plan: torches only where the building allows, fire watch after any hot work, extinguishers on the roof. For plants that cannot lose a day, occupied building reroofing in zones is the normal method.

Price follows access, the number of penetrations, the condition of the deck and the length of equipment shutdowns.

What do Queens storms and heat do to a plant roof?

Ida's remnants arrived on September 1, 2021, and the city's first flash flood emergency left Queens with most of the deaths. Hurricane Sandy left six feet of water in Maspeth. A cloudburst can overwhelm a drain that copes with ordinary rain, and on a wide plant roof the water rises against the parapet.

In an average year about 29.8 inches of snow arrive, 27.3 of them on January 23, 2016, and Central Park runs near 85 degrees on July afternoons. Heat adds to the load on process cooling, and a dark roof adds to the heat. We check drains and curbs before each season and note blisters and open laps after each hot summer.

What is the next step for a plant manager?

The next step is a walk with the plant engineer, then a written rating by roof area. Repairs come in order of urgency: curbs and drains first, then seams and edges. A recover or replacement is priced beside the repairs, with the assumptions listed. Owners of related buildings, such as a logistics operation or a flex industrial building, can be rated on the same scale, and the general contractors who coordinate plant projects get the same numbered plan.