Service Mast Repair

We repair the owner-side service entrance and check the damage path

Service mast repair is not just straightening a pipe. The overhead service is the point where utility conductors, the mast, the weatherhead, the attachment hardware, the meter area and the main panel all work together. If one part has been pulled, twisted or water-damaged, the force often travels farther than it first appears.

City Power Electrical Services inspects the visible overhead service mast, the weatherhead, the service attachment point, the roof or wall penetration, the meter area and the conductors entering the building. Where damage may have reached the main service equipment, we open and inspect the panel area as well, then explain what needs repair and what can remain.

Common mast and service entrance work includes:

• Replacing a cracked or displaced weatherhead
• Securing or replacing a bent mast riser
• Repairing a pulled service attachment point
• Checking service conductors for abrasion or strain
• Sealing roof, soffit or wall penetrations properly
• Inspecting the meter base for movement or cracking
• Verifying grounding and bonding at the service
• Coordinating utility disconnection and reconnection when required

The key is separation of responsibility. Some equipment is utility-owned and some is customer-owned. We identify the boundary, coordinate with Toronto Hydro, Alectra, Hydro One or the local utility where needed, and keep the repair within Ontario Electrical Safety Code requirements.

If the damage includes the meter enclosure, we may recommend dedicated meter base repair. If the mast damage reveals an overloaded, corroded or outdated service, we may also discuss panel upgrades rather than putting a new mast on a failing service entrance.

You need service mast repair when the overhead line has moved, sagged or pulled on the house

Call for service mast repair when anything about the overhead electrical service looks different after wind, ice, tree contact, roofing, siding, soffit work or exterior renovations. A small change at the mast can mean the conductors are under tension, the weatherhead is no longer shedding water correctly, or the attachment point has loosened from brick, framing or fascia.

Warning signs include:

• A mast leaning away from the house
• A weatherhead cracked, missing or pointing sideways
• Wires rubbing against the roof, eavestrough, siding or tree limbs
• A service bracket pulling out of the wall or fascia
• New water staining around the mast penetration
• A meter base that looks twisted or separated from the wall
• Flickering lights after visible service damage
• An insurer, home inspector or roofer noting service entrance concerns

Do not touch the mast, service wires or any conductor near the house. Even if the power appears to be off, the overhead service can still be dangerous. If wires are down, arcing, smoking or pulled low enough to contact people, vehicles or metal objects, treat it as an emergency and call the utility first. For electrical response on the customer side, use our emergency electrician service.

Service mast damage is also common during renovations. New siding, soffit, fascia, roofing or an exterior addition can disturb the mast support, flashing or clearances. If a contractor has removed support around the service, stop work and have the service entrance reviewed before covering it back up.

ESA notification and utility coordination are part of doing the repair safely

Service mast repair often requires an ESA notification because it affects the service entrance. City Power is a Licensed Electrical Contractor, ECRA/ESA #7015314, and we arrange ESA notification and inspection where required. We do not treat service entrance repairs as cosmetic work.

Where the mast or weatherhead cannot be repaired safely while energized, the utility must disconnect power before work begins and reconnect after the repair passes the required steps. The exact sequence depends on the utility, the condition of the service and whether the repair involves the meter base, service conductors, grounding, panel or service size.

The ESA inspection may look at:

• Whether the mast and attachment are mechanically secure
• Whether the weatherhead is installed to shed water properly
• Whether conductors are protected from abrasion and strain
• Whether the meter and service raceway are sound
• Whether grounding and bonding are intact
• Whether the panel and service entrance show heat, corrosion or water damage
• Whether any altered work matches the Ontario Electrical Safety Code

If you are being asked for documentation after an insurance, real estate or utility concern, we can explain whether the situation calls for repair documentation, an ESA inspection record or a more formal ESA electrical safety certificate. The right document depends on the reason for the request and the scope of work performed.

A damaged mast is also a good time to ask whether the service capacity still fits the house. EV chargers, heat pumps, finished basements, hot tubs and major renovations can push an older service closer to its limit. If the service is already being disconnected, it may be practical to compare repair-only work with a service upgrade. Our guide to whether you should upgrade from 100-amp to 200-amp service explains the decision in plain terms.

The visit starts with safety, then a written scope and quote

Our visit starts outside. We look at the service drop path, mast alignment, weatherhead, attachment hardware, wall or roof penetration, meter area and any nearby tree, roof, siding or renovation work that may have caused the issue. Then we check inside at the service equipment where visible damage, water entry, flickering, tripping or insurance concerns suggest the force travelled into the panel area.

If the repair is straightforward and safe to quote from the site visit, we provide a free written estimate. If utility shutdown or ESA coordination is needed, we include that in the work plan. For service mast repair work, we arrange ESA permits when required and complete the necessary inspection process. We also clean up after the repair, including removed fittings, damaged mast parts and work debris.

Service mast repair is quoted in writing after a site visit. There is no honest flat price because the cost depends on access, roofline height, whether the mast is bent or fully failed, whether the weatherhead and service conductors are reusable, whether the meter base moved, whether the utility must disconnect, and whether the main panel or grounding needs correction.

If the repair turns into a service upgrade, published pricing applies. When a service mast repair is part of a 100A-to-200A panel upgrade in the GTA, the full job typically costs $3,200–$4,500 including the panel, labour, ESA permit, and inspection. If the mast work is tied to upgrading from a 60A fuse panel, expect $4,000–$6,000 because the service entrance and meter base usually have to be replaced as well.

For a deeper explanation of cost drivers, see our service mast replacement cost Ontario guide. To book, call City Power Electrical Services at 416-837-4038. We serve Toronto, North York, Scarborough, Etobicoke and the GTA from our North York office at 1800 Sheppard Ave E.