Multifamily and Apartment Roofing on Occupied Buildings

The building is full of people and it stays that way

Everything difficult about multifamily roofing follows from one fact: the residents are not going anywhere. There is no shutdown window, no weekend when the building is empty, no way to take a wing out of service. Every hour of the project happens above somebody's living room, and the things that determine whether the job goes well are mostly not roofing decisions.

They are decisions about staging and parking, about how much roof gets opened in a day relative to the forecast, about whether residents were told what would happen and when, about noise hours, about what falls onto a patio, and about who a resident calls when something goes wrong. Get those right and a full portfolio replacement generates almost no complaints. Get them wrong and the roofing can be flawless while the owner spends a month handling escalations.

We plan the resident-facing side of a multifamily project with the same seriousness as the technical side, and we put it in the contract. Working hours. Written notice per building on an agreed lead time. A daily dry-in commitment so no unit is ever exposed overnight. Magnetic sweeps and ground clearance at the end of every day. Balcony, patio and vehicle protection. A named contact whose number goes on the notice.

Garden apartments: a portfolio problem, not a roof problem

The region's garden apartment stock — overwhelmingly built between the late 1940s and the early 1970s and heavily concentrated in Silver Spring, south Arlington, Alexandria's West End and the older Prince George's and Montgomery corridors — presents a recurring pattern. A community has eight, twelve or twenty near-identical buildings, all roofed in the same year by the same contractor, and all therefore reaching end of life within the same eighteen months. That is a capital event, not a repair.

The answer is almost never to do them all at once. A phased program sequenced by measured condition spreads capital across budget years, lets ownership hold pricing across phases in the contract, and gives everyone a real performance record on the first buildings before the rest are committed. It also spreads the resident disruption, which matters for renewals.

These roofs are also usually hybrid. Shingle over the residential wings, low-slope modified bitumen or EPDM over flat sections, breezeways, stair towers and additions, and the transitions between the two are where the leaks are. Any assessment that treats such a community as a steep-slope job has missed the part that will fail.

What is actually behind an old multifamily leak

A significant share of the leak calls we take on older multifamily property are not roof leaks. Buildings of this vintage typically have little insulation by modern standards and marginal ventilation, and the result in winter is condensation forming in the roof assembly or on cold surfaces and appearing as a ceiling stain that is indistinguishable from a leak. Add HVAC condensate, plumbing above ceilings, and wall and window failures that track down inside the assembly, and misattribution is routine.

This matters commercially because replacing a roof does not fix a condensation problem. An owner who spends heavily on new roofs and keeps getting the same maintenance tickets has bought the wrong thing. We diagnose before we quote, and where the finding is ventilation, insulation or mechanical rather than roofing, we say so — and, as a licensed general contractor, we can often fix that instead.

Where the roof is the problem, a re-roof is also the cheapest opportunity you will ever get to correct the ventilation and insulation deficiencies, because the assembly is open. Skipping that during a replacement to save a small percentage is a decision owners regret for the following twenty years.

Mid-rise, podium and the things residents can see

Mid-rise multifamily brings a different set of constraints. Roof access is through occupied common areas or by crane, material has to be hoisted rather than carried, and the roof frequently carries amenity space — pavers, decking, planters, seating — over the membrane, which has to be dismantled and reinstated as part of the scope and is often the largest single cost item nobody included in their first estimate. Podium and plaza decks over parking or occupied space below are a waterproofing discipline in their own right and should be scoped as such rather than as roofing.

Balconies, walkway coatings and stair tower waterproofing sit adjacent to roofing work and frequently share the same failure history. Where they do, doing them under one contract while the equipment and access are already in place is materially cheaper than mobilizing twice.

Owners, NOI and the number that is not on the invoice

The roofing line item is the visible cost. The costs that are usually larger and never quantified are unit downtime while water damage is repaired, resident concessions and goodwill credits, turn cost on units damaged by leaks, insurance deductibles and the claims history that follows them, and the renewal effect of residents who spent a winter with a bucket in the bedroom. On a portfolio, deferred roof maintenance shows up in operating expense and turnover long before it shows up as a capital request.

That is the case for a scheduled maintenance program on multifamily specifically. Twice-yearly inspection and drainage clearing across a portfolio costs a fraction of a single water intrusion event through occupied units, and it converts roof capital from a series of emergencies into a forecastable line in the plan.

How a multifamily project runs

1. Portfolio condition survey. Every building walked and photographed, steep and low-slope sections assessed together, with a per-building remaining-life estimate and a ranked replacement order based on measured condition rather than on build date.
2. Phasing, budget and resident plan. Costed phases that fit your capital years with pricing held across them, plus the resident-facing plan: notice, working hours, parking, protection and the contact whose number goes on the notice.
3. Building-by-building execution. One building fully completed and cleaned before the next opens, daily dry-in so no unit is ever exposed overnight, daily ground clearance and magnetic sweep, and balcony, patio and vehicle protection in place before work starts.
4. Closeout and handover. Per-building completion documentation, warranty registration, photographs, and a roof file per building so the next asset manager inherits a record instead of a mystery.

Multifamily scope

• Garden apartments
• Mid-rise multifamily
• Podium and plaza decks
• Phased portfolio replacement
• Held pricing by phase
• Resident notice
• Parking and access management
• Daily dry-in
• Magnetic sweeps
• Balcony and patio protection
• Ventilation and insulation correction
• Interior water damage repair
• Walkway and stair tower coatings

The obligations that keep residents from becoming your problem

On occupied residential property the contractor's compliance file matters less to residents than the contractor's behavior, but the owner needs both. Before mobilizing we provide a certificate of insurance naming the ownership entity and the management company as additional insureds, general liability and workers' compensation limits confirmed against your requirements, bonding where a contract calls for it, a documented safety and fall protection program, and licensure held where the property is — MHIC #111971 in Maryland.

What residents experience is governed by the contract terms we accept: defined working hours, written notice per building on an agreed lead time, a daily dry-in commitment so no unit is exposed overnight, protection for balconies, patios and vehicles, ground clearance and a magnetic sweep at the end of every day, and a named contact whose number goes on the resident notice rather than a general office line.

The owner gets one project contact throughout, which on a phased portfolio program running across budget years is the difference between continuity and re-explaining the property every time a phase starts.

Where the multifamily stock is

Our heaviest multifamily concentrations are in Silver Spring, Arlington, Alexandria, Woodbridge and Gaithersburg, with mid-rise and podium work concentrated in Bethesda, Washington DC and Tysons. Where the property is association-governed rather than owner-operated, see HOA and condominium associations.

Related commercial pages: commercial roofing systems, TPO, EPDM, modified bitumen, flat roof repair, coating and restoration, maintenance programs, roof asset management, emergency response. By audience: property managers, HOA and condominium associations, multifamily and apartments, retail and office buildings, churches and nonprofits. Residential and adjacent work: roofing, aluminum siding.

Multifamily roofing questions