(860) 421-6068 Charter Oak Roofing Co. Hartford, CT Request a free quote

Hartford, CT · Mon–Sat 7am–6pm

Flat roof installation: building the slope that isn't there yet

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Answered Mon–Sat 7am–6pm
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What the job involves

Flat Roof Installation in Hartford, CT

Why no flat roof is flat

Call it a flat roof, but nobody actually wants to build one flat. A perfectly level roof surface has nowhere for water to go, and standing water on a low-slope roof accelerates membrane deterioration, so ponding is treated as a defect to correct through drainage or slope rather than a condition to coat over. On new construction that principle gets applied before a single roll of membrane ever gets unrolled: the roof is designed with a small amount of slope built in from the start, aimed at whatever drains or scuppers will carry the water off, so ponding is never something the finished roof has to be forgiven for.

The structural deck underneath, though, is often close to level by design — that's usually the cheaper, simpler thing to frame or pour, and it's a fine starting point as long as slope gets added somewhere above it before the membrane goes on. Some decks even slope slightly the wrong way in spots, toward a parapet wall instead of a drain, which is a normal condition to correct rather than a sign anything was built wrong. Either way, the deck itself is rarely where the finished roof's slope actually comes from on a new low-slope installation.

What that means in practice is that 'flat roof installation' is really a drainage design project with a membrane on top of it, not a membrane installation with drainage as an afterthought. Getting the slope plan right before insulation goes down is what keeps the finished roof from ever needing a coating or a drainage retrofit just to correct water that should never have been allowed to sit there in the first place.

Tapered insulation and slope design

Tapered insulation is how most new low-slope roofs get their slope without touching the structural deck at all. The boards are manufactured with a built-in taper — thicker at one edge than the other — and laid out in a planned pattern across the roof so that stacking them side by side creates a gradual, engineered slope running toward wherever the drains or scuppers actually sit. The deck stays flat; the insulation layer is what does the sloping.

That layout has to be planned against the building's actual drain locations, not assumed. A roof with drains spread across the field needs a taper pattern with multiple low points, each one funneling its own section of roof toward the nearest drain, rather than a single slope running the whole roof toward one corner. Small tapered crickets get built between two nearby drains, or behind a rooftop curb, specifically to prevent a low spot from forming where two drainage areas meet or where a piece of equipment interrupts the slope pattern — without that detail, water collects right at the base of whatever is sitting in its path, which is exactly the kind of standing water a well-designed roof is built to avoid.

Insulation thickness on a commercial roof also does double duty: it's the same layer that creates slope and the layer that insulates the building below it, so the taper design and the insulation plan for the building get worked out together rather than as two separate decisions. A cover board typically goes over the tapered insulation before the membrane, giving the membrane a smoother, more consistent surface to lay onto and adding a layer of protection between the insulation and whatever gets set or walked on above it.

Membrane selection

Once the slope and insulation layer are planned, the membrane on top is the last major decision in a new installation, and it comes down largely to how the finished roof needs to be seamed and maintained. EPDM is a thermoset membrane, so its seams must be bonded with adhesive or seam tape, while TPO and PVC are thermoplastics whose seams are heat-welded instead — a welded thermoplastic seam, correctly made, is as strong as the membrane field itself. That single chemistry difference carries through the whole life of the roof, not just the installation day, since it also determines how every future repair or patch gets made.

Color plays into the choice too, though it's a secondary factor rather than the deciding one. A membrane's surface color affects how much solar heat the roof absorbs versus reflects, which in turn affects the building below it, but that consideration sits alongside seam method, equipment load, and budget rather than overriding them — a building with heavy rooftop equipment and constant service traffic may value a durable, easily repaired seam far more than it values reflectivity, and the reverse can be just as true for a building with a wide-open, rarely-accessed roof.

We cover each system's own installation detail in full elsewhere: our EPDM rubber roofing installation page walks through the thermoset option and what its bonded-seam construction means for the finished roof, and our TPO roofing installation page covers the thermoplastic option and what heat welding demands of the crew doing it. Both are legitimate choices for a new low-slope roof; which one fits a given building depends on factors like roof color and reflectivity goals, how much rooftop equipment and foot traffic the finished roof will see, and budget, more than either system being categorically better than the other.

What doesn't change between systems is the sequence: deck, slope design, insulation, cover board, then membrane, in that order. Skipping ahead to membrane selection before the drainage plan is settled is how a brand-new roof ends up with a ponding problem on day one, which is exactly the outcome the slope design in the first place exists to prevent.

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Hours

  • SundayOpen 24 hours
  • MondayOpen 24 hours
  • TuesdayOpen 24 hours
  • WednesdayOpen 24 hours
  • ThursdayOpen 24 hours
  • FridayOpen 24 hours
  • SaturdayOpen 24 hours

Calls are answered live, including overnight, weekends, and holidays. Dispatch times vary with traffic and how far the van has to travel.

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Need flat roof installation in Hartford?

Urgent jobs are quickest by phone — someone picks up around the clock, and the price you hear before dispatch is the price you pay.

(860) 421-6068

What type of job is this?

Prefer to talk to a person? (860) 421-6068

Part of our commercial roofing services work — related: flat roof repair, flat roof membrane replacement.

Through the year

How Hartford weather changes this job

Winter in Hartford

Ice dams build along the eaves when attic heat melts snow that then refreezes at the colder edge, backing water up under the shingles. Sustained snow load also stresses older framing and flat sections built with a lighter deck.

Spring in Hartford

Freeze-thaw cycling through late winter works ice into small cracks in flashing and sealant, so the first heavy spring rain is usually when a slow leak turns visible. Wind during spring storms lifts shingles that ice already loosened.

Summer in Hartford

UV exposure and heat cycling dry out asphalt shingles faster on south- and west-facing slopes. A roof that looked fine in June can show granule loss and curling edges by August.

Autumn in Hartford

The season for getting ahead of winter — gutters cleared, flashing checked, and a full inspection scheduled before the first hard freeze locks in whatever damage went unnoticed over summer.

What we handle

Roofing services in Hartford

  • Roof Installation

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    Full new-roof installation on additions, new builds and full tear-offs.

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  • Roof Replacement

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    Complete removal and replacement of a worn or storm-damaged roof, from deck inspection through final cleanup.

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  • Shingle Replacement

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    Section or full-roof shingle replacement matched to existing coursing so the repair doesn't stand out from the street.

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  • Roof Decking Replacement

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    Replacing rotted or delaminated plywood decking discovered during a tear-off, before new shingles or underlayment go down.

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  • Roof Re-Pitching

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    Reframing a low-slope or flat section to a working pitch so water sheds instead of pooling and leaking.

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  • Roof Structural Reinforcement

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    Sistering rafters and reinforcing framing that has sagged under snow load or years of undersized original construction.

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  • Roof Truss Reinforcement & Repair

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    Repairing or reinforcing damaged trusses so the roof carries its rated load through the next big snowfall.

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  • Solar Panel Roof Installation

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    Roof preparation that carries a solar array's weight and penetrations without voiding either the roofing or panel warranty.

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  • Residential Roofing Services

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    Residential roofing service covering material selection, installation and long-term care for every roof type Hartford homes use.

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  • Asphalt Shingle Roof Installation

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    Standard three-tab or architectural asphalt shingle installation, the most common re-roof for Hartford's postwar capes and colonials.

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  • Cedar Shake Roof Installation

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    Hand-split or taper-sawn cedar shake installation for owners restoring or preserving a period roofline.

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  • Slate Roof Installation

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    New natural slate installation on colonials and capes where the original roof has finally reached end of life.

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  • Historic Slate Restoration

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    Repair and selective replacement for Hartford's original slate roofs, matched to the existing stone.

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  • Metal Roof Installation

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    Standing-seam or exposed-fastener metal roofing installation, sized for New England snow load and long-term durability.

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  • Tile Roof Installation

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    Concrete or clay tile roof installation for owners who want a distinct roofline and decades of service life.

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  • EPDM Rubber Roofing Installation

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    EPDM rubber membrane installation for flat and low-slope sections, welded and flashed to shed standing water.

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  • TPO Roofing Installation

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    TPO single-ply membrane installation for flat commercial and residential additions, reflective and seam-welded for a tight roof.

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  • Energy-Efficient Roofing Solutions

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    Reflective shingles, ridge ventilation and insulation upgrades chosen to cut attic heat loss through a Connecticut winter.

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  • Roof Repair

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    Diagnosis and repair for leaks, flashing failures and storm-damaged sections before small problems become full replacements.

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  • Roof Leak Detection

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    Locating an active leak's true entry point, which is often feet away from the stain on the ceiling.

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  • Roof Leak Diagnosis

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    Every failure point contributing to a leak identified through a full roof assessment before any repair is scoped.

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  • Roof Leak Prevention

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    Flashing and sealant work at known failure points so this winter's freeze-thaw cycle doesn't reopen last year's leak.

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  • Roof Sealing

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    Sealing seams, penetrations and transitions with roofing-grade sealant to stop water intrusion at a specific point.

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  • Chimney Flashing Repair

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    Rebuilding step and counter flashing around a chimney, the single most common source of a roof leak.

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  • Chimney Crown Repair

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    Chimney crown cracks patched and sealed before water gets behind the flashing and into the attic.

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  • Roof Flashing Installation

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    Installing flashing at valleys, walls and penetrations, the metal detailing that keeps water moving off the roof.

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  • Roof Drip Edge Installation

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    Drip edge fitted along eaves and rakes so runoff clears the fascia instead of rotting it from behind.

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  • Roof Eave Flashing Repair

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    Eave flashing rebuilt where ice dams do the most damage on older Hartford roof lines.

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  • Roof Skylight Repair

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    Resealing or replacing failed skylight flashing and glazing seals that let water track down into a ceiling.

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  • Roof Skylight Installation

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    Cutting in and flashing a new skylight, curb-mounted or deck-mounted, without compromising the surrounding roof deck.

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  • Solar Panel Roof Repair

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    Removing and resetting solar panels to repair the roofing underneath, then re-flashing every mounting point.

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  • Emergency Roof Repair

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    Storm, hail and wind damage — stabilizing the roof first, then scoping the permanent repair.

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  • Roof Storm Damage Repair

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    Repairing roof damage from a specific storm event, documented and itemized for an insurance claim.

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  • Roof Hail Damage Repair

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    Replacing hail-bruised or fractured shingles identified during a post-storm inspection, matched to the existing roof.

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  • Roof Wind Damage Repair

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    Resetting or replacing shingles lifted or torn loose by high wind before the next storm gets underneath them.

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  • Roof Wind Damage Inspection

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    Post-wind-event inspection finding lifted shingles and compromised seals before they turn into an active leak.

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  • Storm Damage Roof Inspection

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    Roof condition documented after a storm and written up for an insurance adjuster before repairs begin.

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  • Ice Dam Removal & Prevention

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    Steam removal of active dams plus the ventilation and shield work that stops the next one.

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  • Roof Snow Removal

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    Raking or shoveling heavy snow load off a roof before it exceeds the structure's rated capacity.

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  • Roof Maintenance

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    Scheduled inspection, ventilation and drainage work that catches freeze-thaw damage before winter turns it into a leak.

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  • Roof Inspection

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    Every visible roof system checked, covering shingles, flashing, ventilation and decking, with photos and a written condition report.

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  • Roof Ventilation Installation

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    Ridge and soffit ventilation added so attic air moves the way it needs to in every season.

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  • Roof Ventilation Repair

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    Repairing blocked or undersized attic ventilation that is driving ice dams or premature shingle wear.

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  • Roof Insulation Installation

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    Adding attic insulation to the level needed to keep the roof deck cold and stop ice dams.

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  • Roof Moisture Barrier Installation

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    Installing a moisture barrier under roofing materials to block vapor intrusion before it reaches the decking.

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  • Ice & Water Shield Installation

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    Self-adhering ice-and-water shield goes down at eaves and valleys, the underlayment that actually stops an ice dam leak.

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  • Roof Drainage System Installation

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    Installing or re-routing roof drainage so runoff clears the foundation instead of pooling against the house.

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  • Gutter Installation & Replacement

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    New or replacement gutters and downspouts sized to actually carry Hartford's spring runoff away from the foundation.

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  • Tile Roof Maintenance Inspection

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    Periodic inspection of a tile roof for cracked or slipped tiles and failing underlayment.

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  • Commercial Roofing Services

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    Flat and low-slope roofing for Hartford-area commercial buildings, from new membrane installs to restoration and waterproofing.

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  • Flat Roof Installation

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    A commercial building gets a new flat roof, membrane selected for the building's use and traffic.

  • Flat Roof Repair

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    Patching or resealing a failed section of flat roof membrane before ponding water finds its way inside.

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  • Flat Roof Membrane Replacement

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    Full tear-off and replacement of an aged flat roof membrane that has outlived its service life.

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  • Low-Slope Roof Waterproofing

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    Membrane waterproofing for low-slope sections that don't shed water fast enough for standard shingle roofing to work.

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  • Commercial Flat Roof Waterproofing

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    Waterproofing a commercial flat roof at seams, penetrations and parapet walls where leaks actually start.

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  • Elastomeric Silicone & Acrylic Roof Coating

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    Applying an elastomeric, silicone or acrylic roof coating to extend the life of an existing commercial membrane.

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  • Metal Roof Thermal Barrier Coating

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    A reflective thermal barrier coating applied to a metal roof to cut cooling load and slow corrosion.

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  • Commercial Roof Restoration

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    Restoring an aging commercial roof system to extend its service life without a full tear-off and replacement.

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  • Infrared Roof Leak Detection

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    Infrared scanning of a commercial roof to locate trapped moisture under the membrane before it spreads.

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Free quote

Get a fixed price before anyone sets off

Urgent jobs are quickest by phone — someone picks up around the clock, and the price you hear before dispatch is the price you pay.

(860) 421-6068

What type of job is this?

Prefer to talk to a person? (860) 421-6068

Where we go

Hartford and the surrounding towns

Mobile service, so the van comes to you. Hartford is the base; these are the neighboring communities we cover on the same call-out.

Hiring in one of these towns?

A separate guide for each town on what to check before you sign with any roofing contractor there — license and insurance, written scope, and what the warranty actually covers.

Straight answers

Common questions about roofing costs and service

Can a slate roof last 200 years?

That is a pitched, steep-slope residential material, and this page covers new low-slope membrane installation, so it isn't really the same conversation. What we'd say in general is that we're cautious of any single lifespan number stated with more confidence than the material supports — a roof's actual service life depends on the specific material, the installation, and how the flashing tying it together has held up, not a number alone.

How do roofers get rid of ice dams?

Ice dams are a pitched-roof, shingle-and-eave problem where meltwater refreezes at a cold edge — a new low-slope commercial roof, built with engineered drainage and no shingle courses, doesn't form ice dams the same way. If a low-slope roof is icing up in a way that concerns a building owner, that usually points to a drainage or insulation question specific to that roof, not a removal method that applies generally, and it's worth having that specific roof looked at rather than applying a pitched-roof fix to a system that sheds water on a completely different principle.

How much do new gutters cost in CT?

We don't have a verified pricing figure, and it's a residential question outside what a low-slope installation page covers anyway. Worth noting: a new low-slope roof usually moves water through drains or scuppers built into the tapered insulation layout rather than a gutter run along the edge, so gutter pricing generally isn't part of a flat roof installation scope at all — that's a separate trade decision on a building that also happens to have pitched sections somewhere on it.

What is the cheapest siding I can buy?

Siding is a different trade and outside what we install — we build roofs, and on the commercial side specifically low-slope membrane systems. The one thing worth carrying over from roofing to that question: the cheapest option up front isn't always the cheapest one over the life of the material, which is as true of siding as it is of any roofing choice.

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