An older building asks a different question of its roof than a new one does: what is already up there, and what will it tolerate? Old Hill sits about a mile east of Metro Center, spans 240 acres between Walnut Street, State Street, the former Highland Division rail line and Watershops Pond, and the City's profile names the Watershops Armory and Winchester Square Fire Station as historic assets in the district. Older buildings can carry layers of earlier roofing, patched flashing and parapets that have been repaired more than once. Across Springfield, MA the work runs from inspection through repair, recover and replacement of low-slope and metal roofs, and on older buildings the first task is finding out what is under the surface.
Find the layers before you plan
A roof that has been reroofed twice may carry two or three membranes, each with its own insulation, over a deck of unknown condition. Cutting a few core samples reveals the build-up, the thickness of insulation and whether any layer holds water. That information changes the plan. A recover is possible only when the layers beneath are dry and the structure can carry the load. A tear-off is required when moisture has spread, and it reveals the deck, which may need repair.
We also look for signs that the deck has moved: low spots, cracked parapets and fasteners that have backed out. On older buildings, the deck may be wood, concrete or steel, and each responds to water differently. Knowing which one we have decides how the tear-off proceeds and what protection the interior needs below it.
Moisture is the other half of the survey. Layers that look fine on top can hold water at the bottom, and wet insulation loses most of its value. A scan or a set of core samples tells us where the water is, and the map determines whether we can keep part of the roof or must remove it all. We would rather learn that during the survey than after the first section is open.
Parapets, coping and wall tie-ins
Where a building finishes its roof against masonry parapet walls, they are the most common place for water to enter. A cracked coping stone, open mortar joint or failed counterflashing lets rain run behind the membrane and down inside the wall.
We check the parapet from the roof and, where possible, from the ground: coping joints, mortar condition, base flashing height and the reglet or termination at the top of the membrane. Repairs may involve repointing, new counterflashing or a metal coping system that sheds water away from the wall. Work like that is often done alongside the roof project because the same lift and the same weather window serve both.
Wind adds weight to the case for good parapet and edge work. The June 1, 2011 EF3 tornado in Springfield, documented by the National Weather Service, hit large commercial brick structures and removed roofs from some. Coping that is loose, or a parapet cap that is unsecured, is where wind lifts first. Fastening metal coping to the wall with proper cleats and fasteners is a small cost compared with the damage from a section that tears loose.
Working near historic assets
Where a building is listed or sits in a historic area, owners should confirm early whether review applies to roof changes visible from the street. Even where it does not, a sensitive approach pays off: low-profile edge metal, colors that suit the wall and flashing that does not obscure masonry detail. We prepare drawings and product data that a reviewer would expect, and we discuss options that meet both performance and appearance.
Under the 780 CMR 10th Edition, Springfield's Building Division handles plan review and inspection, and energy requirements for commercial work come from IECC 2021 as amended by the state. For a reroof, that often means insulation thickness is part of the review, and we state the proposed value in the scope.
Color and profile choices are usually simple to settle once the building's constraints are clear. A low-slope roof behind a parapet is invisible from the street, and the membrane color is a performance choice. A visible metal roof is another matter, and the finish, seam spacing and trim all matter to how it reads on the building.
Snow, ice and aging drains
The 2023 ResilientMass plan treats severe winter storms as a high-likelihood event for the state, and it lists snow and ice weight on roofs and structures among the impacts. Older roofs can have fewer drains than current practice would use, and the ones they have may be small or corroded. A thaw that overwhelms a single drain puts water on the surface for days.
We check drain bowls, clamping rings, leaders and the discharge point. Where capacity is thin, an added drain, an overflow scupper or tapered insulation to direct water is the fix. Those upgrades belong in a replacement or recover, since the roof is open then and the slope can be corrected.
Phasing and tenant access
On an occupied older building, access is often the tightest constraint. Stairs may be narrow, roof hatches small and the street frontage close to the sidewalk. We walk the access route with the building manager and decide how material will be lifted, where the dumpster will sit and which entrances stay clear. Where the street is busy, we ask about permit needs for staging and lane closures early, since those approvals can set the start date.
The roof is divided into sections, each closed daily with a temporary tie-in if needed. The daily closeout covers debris, material security and photographs. Tenants receive notice of the day's noise, and sensitive rooms below are protected before tear-off begins.
Repair, recover or replace
A repair addresses a located defect on a sound roof. A recover fits a dry roof that can carry another layer. A replacement fits a roof with wet insulation, multiple layers or a damaged deck. Tear-off depth, deck repair, parapet work, penetrations and access move the cost.
Because older roofs hide surprises, deck repair is priced as a unit rate and carried as an allowance until the roof is open. That way the owner knows how a surprise would be priced before it appears. The written options also note what each path leaves in place and when the next decision would come.
Closeout records for older buildings
On an older building the closeout record carries extra weight. It documents the layers found, the deck condition, the repairs made and the product data for the new system, and a facility manager keeps it as the turnover file for the next project. The format also suits McKnight and Upper Hill, and a fall maintenance visit keeps drains and flashing in order.
Commercial Roofing Questions
How do I know whether a recover is possible on an older roof?
Core samples show how many layers are there and whether they are dry. A recover needs dry insulation and a structure that can carry the added weight.
What happens if the deck is damaged under the old roof?
We replace the affected sections, priced as a unit rate and confirmed once the roof is open. The scope states how that allowance works.
Do parapet repairs need a separate permit?
That depends on the extent of the work. The Building Division can say whether masonry repair is covered under the roof permit or needs its own.
Can roof work be done near historic buildings without harming them?
Yes, with attention to access, staging and fastening. We protect walls and detail work, and we choose edge metal that suits the building.
How many drains should an older roof have?
Enough to carry design rainfall with an overflow route. We compare existing drains to the roof layout and recommend additions where water ponds.
