Roof Coating and Restoration in Brockton, MA
A coating is not a leak repair. Owners buy one hoping it will seal a roof that leaks. It will not. A coating is a protective skin over a roof that is already sound. If the insulation under it is wet, the coating traps the water. If the seams are open, the coating bridges them for a few months and then splits. Restoration works when the roof is dry and the details are fixed first.
In Brockton, MA, that test matters more than the product. Winters of about 34 inches of snow and repeated freeze and thaw punish any surface that is not bonded tight. We prove the roof can take a coating before anyone quotes one.
Cut Cores Before You Quote
The first step is a core cut. We pull a small plug of the roof, usually a few inches across, and look at every layer. The plug shows membrane thickness, adhesive, insulation and deck. Wet insulation is obvious. So is rot in the board. A core takes minutes and saves a failed project.
We cut several cores across the roof, not one. Moisture hides in low spots and near drains. A scan with an infrared moisture survey narrows where to cut. If more than a small share of the field is wet, coating is the wrong tool. We say so and price the alternative.
The cores also show how many layers are on the roof. A roof with two old membranes and wet board between them cannot take a coating. A single sound membrane over dry board can. We note the count and the thickness on a roof plan, with a photo of each plug. The holes get patched the same day with a matching plug and sealant.
Any area that ponds is flagged before cores are chosen. A roof that holds water for days after rain has a deck or drain problem. Coating over it does not fix it. A ponding water repair comes first, with a sump, a cricket or a new drain.
Separate Surface Wear From Real Failure
Chalking, fading and a few small blisters look bad. They are surface wear. They do not mean the roof is finished. A coating can address them, and it can add reflectivity and years.
Open seams, split flashings and soft spots are different. Those are failures. They must be repaired before any coating goes down. A coating over an open seam fails at the seam, usually in the first winter. We probe every seam, press every termination and mark each defect. The repair list comes first. The coating comes last.
Age is the other bad guide. A twelve-year-old roof can be in better shape than an eight-year-old one. It depends on drainage, foot traffic and how many details were patched. We judge condition, not years. A roof that has been maintained and kept dry can take a coating late in life. A roof with a history of neglect may not.
Pick the Coating That Fits the Roof
Three families do most of the work. Each has a place and a limit.
- Acrylic is a water-based coat that reflects heat. It suits roofs that drain well. It does not like standing water.
- Silicone sheds water and tolerates ponding. It collects dirt and can be hard to recoat with other types.
- Polyurethane is tough under foot traffic and hail. It needs a UV-resistant topcoat.
The existing roof decides the choice. Silicone suits a roof that ponds, and silicone roof coatings are what we price first there. A roof that drains cleanly can take acrylic roof coatings at lower cost. Metal, modified bitumen, TPO and built-up surfaces each need their own primer and prep. We run an adhesion test patch before ordering material.
Prep the Surface or Lose the Job
Most coating failures are prep failures. The product is fine. The surface was dirty, damp or chalky, and the coat never bonded. Prep is the real work.
We pressure wash, let the roof dry, and treat rust on metal. We re-seal every seam and flash every penetration. We fill low spots that pond. Only then does the first coat go on. Fastener heads get sealed on a metal roof. Cracks get reinforced with fabric. The coat is applied at the thickness the manufacturer calls for, and we check it with a wet-film gauge. Thin coats look fine and wear out in a few years.
Edges and terminations get special care. Coating runs up parapets and over curbs, so those joints take the most movement. We reinforce them with fabric and extra coat. Skylight curbs, pipe boots and drain bowls get the same. A coating system is only as tight as its weakest flashing.
Schedule Around Temperature and Rain
Coatings cure within a temperature range. Too cold and they do not set. Too wet and they wash off. In Brockton that narrows the season. Work runs from late spring through early fall, when surfaces are dry and above the product's minimum.
Wind adds a second limit. Brockton averages 14.3 mph, among the windiest in the country. Spray work drifts and rolled work dries too quickly in a steady wind. We plan around forecasts and move sections when needed. A rain shower on a fresh coat can ruin a day's work, so we do not push the schedule.
Cold also shapes the repair list. Freeze and thaw works on any open seam through winter. A roof coated in October with a hidden open seam shows the failure by March. So we do not coat late in the season. If the window closes, we do the repairs, protect the roof and wait for spring. That costs a season and saves the coating.
Weigh Restoration Against Replacement
Restoration costs less than replacement. It also avoids tear-off, disposal and a long open roof. It keeps tenants in place. For a distribution roof in the Avon Industrial Park, that can mean no disruption to operations. For older brick buildings, it can add years while the owner plans the capital spend.
It stops making sense when wet insulation is widespread or the membrane is brittle. At that point, a commercial roof replacement is the sounder answer. We show the core cuts and the moisture map so the choice is not a guess. Where the roof is a candidate, a coating also lowers surface heat and slows UV wear. Done on a dry, repaired roof, it can extend service for years.
Cost per square foot is lower than replacement, but prep, repairs and coat thickness move it. A roof with many penetrations costs more to flash. A roof with heavy ponding costs more to correct. A roof over an occupied hospital, such as the Brockton VA campus near Route 24, costs more to phase. The written scope lists each item so you can see what drives the price.
Commercial Roofing Questions
Will a coating stop my roof from leaking?
Not by itself. Leaks come from seams, flashings and penetrations. We repair those first, then coat the sound roof.
Can you coat over wet insulation?
No. It traps moisture and the coating blisters. Wet board gets cut out and replaced before any coating goes down.
How many years does a coating add?
It depends on the roof, the product and the thickness applied. We tell you the manufacturer's stated range and what condition your roof needs to reach it.
Does a coating affect my existing warranty?
It can. Some manufacturers require approved coatings or applicators. Send the warranty paperwork first, and we check the terms before work begins.
Can the building stay open during coating?
Yes. Coating needs no tear-off. We section the roof, avoid air intakes and tell you which areas are active each day.