New insulation
New rigid insulation with cover board under the new membrane.
Commercial Roofing
Commercial Roof Replacement Harrison, NJ
Commercial roof replacement in Harrison starts with core cuts and a moisture survey, then a choice between a full tear-off and a recover over the old roof, phased so the building stays open and dry. Dial (551) 348-3304 to talk through a roof replacement with a local roofer.
Most commercial roofs reach replacement when leaks spread, the membrane wears out or the insulation gets wet across large areas. A roof with many failing seams, cracking or blistering across the surface, or large wet areas under the membrane is a replacement candidate. Roof age is a factor, with most commercial systems lasting around 15 to 30 years.
A replacement plan starts with the existing layers. Codes typically cap buildings at two roof systems, so the core cut determines whether a recover is allowed. Recovering is an option over one sound, dry roof, while wet areas must be removed. Current energy codes often call for more insulation than the old roof had, which affects edge heights and curbs.
Replacing a roof over an operating building takes coordination. Sections are opened and closed within the same workday, with nightly seals tying the new roof to the old. Crane days, staging areas, noise and odors are scheduled with tenants in mind.
Commercial Roof Replacement is often paired with commercial roofing and tpo roofing, depending on the cause.
Need commercial roof replacement in Harrison? Call (551) 348-3304 to reach a nearby roofing contractor.
Call nowThe process
What a commercial roof replacement involves
A commercial replacement follows a clear sequence from survey to closeout.
Run a moisture survey
A full survey maps existing layers, wet areas, deck condition and drainage. The results define tear-off or recover.
Choose the system
The system is chosen for the building use, exposure and foot traffic. Tapered insulation and crickets are designed to eliminate ponding. If the old roof ponded around columns or along walls, the new layout fixes that with crickets or added drains.
Plan logistics
Logistics like permits, staging and access are settled before work begins. HVAC contractors may be scheduled to disconnect and reset units. Notices go out to tenants before crane lifts and tear-off begin.
Tear off in sections
The crew removes old layers in phases, replacing damaged decking as it is found. Deck damage is repaired before anything new is installed. The crew pays close attention around old drains and curbs, since slow leaks there tend to damage the deck.
Lay the new roof
The new system goes on in layers, sealed at each seam. Each section is tied into the old roof at day end with a temporary seal. The seal comes off as the next section is opened.
Flash the details
Every detail gets new flashing, and edge metal and coping are replaced. The roofer walks the roof with the owner and provides closeout documents.
What is included
What goes into a commercial reroof
New membrane
A new membrane or metal system matched to the building.
Roof survey
Core cuts and a moisture scan before the plan is set.
Edge metal
Flashing and perimeter metal for a watertight finish.
Tear-off
Old layers stripped to the deck with damaged deck replaced.
Related service
Commercial Roof Installation Harrison, NJ
For new construction, commercial roof installation is coordinated with the building design from the start. Penetrations and curbs are coordinated with other trades so the roof can be flashed properly. Getting the slope right at this stage prevents ponding for the life of the roof.
Additions on Harrison commercial buildings need careful tie-ins between new and old roofs. The tie-in between systems is a common leak point, so it gets extra attention. Expansion joints may be needed where buildings meet.
Local help
Commercial Roof Replacement Near Me
Commercial roof replacements in Harrison range from small retail buildings to large warehouses and churches. Across Harrison and nearby towns like Newark, Kearny, North Arlington and East Orange, many buildings already have two roofs, which means a tear-off this time, so the replacement is a chance to fix drainage for good.
For commercial roof replacement in Harrison, NJ or nearby towns like Newark, Kearny, North Arlington and East Orange, call (551) 348-3304 to reach a roofer who covers your street.
What the local climate does to a roof
Cold winters bring snow, ice and a long stretch of freezing nights. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, which is how ice dams form and back water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. That is why roof repair in Harrison is busiest after a hard winter and before the next one.
Why call
Why act early
Less damage
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Local knowledge
Roofers in Harrison know the roof types and weather wear common in local homes.
Know what happens next
Ask your questions before you agree to anything.
Common questions about commercial roof replacement
What affects the timeline of a commercial roof replacement?
Several factors set the schedule: roof size, tear-off, weather and logistics. A small building may take days, while a large warehouse or multi-building project can take weeks. Rain delays are common, since the crew only opens what it can close up each day.
Which commercial roof system should we choose?
The building, its use and its exposure decide the best system. Each has strengths: TPO and PVC for welded seams, EPDM for flexibility, mod bit for toughness and metal for slope. The survey and your plans for the building guide the choice.
Do commercial roof replacements need permits?
Commercial roof replacements need a building permit in most places. Inspectors check layer limits, insulation and attachment. The roofer typically handles the permit and inspections.
Can the business stay open during a roof replacement?
Keeping the building open is the norm. Crews work in sections, seal each one daily and plan noisy or smelly work carefully. HVAC intakes are covered or units shut down during adhesive work.
Can a new commercial roof go over the old one?
The survey decides. One dry existing roof can be recovered in many cases. Two existing roofs or wet insulation require a tear-off.
More questions? Call (551) 348-3304
Other services that may help
Commercial Roofing
Commercial roof repair, replacement and maintenance for low-slope and metal roofs, with drains, rooftop units and access handled.
Learn moreTPO Roofing
Heat-welded TPO membrane for flat and low-slope roofs, built around proper drainage, flashing and edge metal.
Learn moreModified Bitumen Roofing
Modified bitumen roofs for flat and low-slope areas, installed, repaired and replaced.
Learn moreCommercial Metal Roofing
Installing, replacing and repairing metal roofs on warehouses, shops, offices and other commercial buildings, built to handle thermal movement and wind uplift.
Learn more
Looking for something else?
See all roofing servicesTalk to a Harrison roofer about commercial roof replacement
Call (551) 348-3304 for a local roofer in Harrison and nearby towns.