Granule Loss
- You See
- Granules piling up in gutters and downspouts.
- What It Means
- Light loss is common and coating seals the exposed asphalt. Bare patches across the field point to reshingling.

Service · Shingle Roof Coating
As a Bristol shingle roof coating contractor, we coat asphalt shingle sections on offices, churches, and mixed commercial buildings once the shingles pass inspection.
Bristol shingle roof coating has a narrow gate. The shingles must be in good shape for the coating to help.
Coating seals a shingle surface. These conditions decide whether there is a surface worth sealing.
Shingle coating covers one roof type. Mixed buildings use it next to the others.
| Option | Roof Section | Repairs First | When It Is Skipped |
|---|---|---|---|
| Shingle coating | Steep asphalt shingle | Lifted tabs, valleys, flashing | Curled or bare shingles |
| Reshingling | Worn-out shingle roofs | Deck repair | Shingles still flat |
| Elastomeric metal coat | Steel roof sections | Fasteners and laps | Rust-through |
| Silicone | Flat additions that pond | Seams and drains | Fast-draining roofs |
| Acrylic | Pitched metal sections | Laps and rust | Ponding roofs |
When the shingles pass inspection, coating gives these four results.
Exposed asphalt and worn granules get covered and shielded from sun.
A coated shingle surface ages more slowly than bare asphalt.
Existing shingles stay in place, so there is no disposal or open deck.
Work is staged around services, offices, and events.
Lighter coated shingles reflect more sun than weathered dark asphalt.
Sealed surfaces and repaired flashings stop slow drips at nail heads and laps.
The inspection notes give the board or owner a written picture of the roof.
Coating now and reshingling later spreads roof costs over more years.
Call us with the age of the shingles and what you see in the gutters. We will tell you which way the roof usually goes.
Most of a shingle job is deciding whether to coat at all. The steps reflect that.
We walk the shingle sections, check granule loss and deck movement, look at ventilation, and decide between coating and reshingling.
Lifted tabs, missing shingles, valleys, and flashings are fixed and sealed down.
A low-pressure wash removes dirt and loose granules without stripping the shingles.
Shingle coating goes on in mild, dry conditions to the specified thickness, with staging and fall protection on steep sections.
Buildings with shingles usually have other roof types too.

Steel sections on the same building get the standard metal coating.
Bristol Metal Roof Coating

On shingles that still lie flat and keep their granules, it seals the surface and slows weathering. Curled, cracked, or missing shingles and soft decks need repair or reshingling first.
Intact shingles over a firm deck get coated. Curling, cracking, blow-offs, or a flexing deck call for reshingling, and the roof walk decides.
Shingle condition matters most, then thickness, ventilation, shade, and moisture. Freeze-thaw and eave ice test every shingle roof, so those areas get checked first.
The published range is about $2.50 to $4.00 per square foot. Shingle repairs, pitch, height, valleys, penetrations, and thickness move the price within it.
Coating costs less when the shingles are intact, since there is no tear-off or new material. Once repairs spread across most of the roof, reshingling becomes the better use of money.
Yes. Each section gets a system for its slope and material, flashings are sealed where sections meet, and access is planned around services with fall protection on steep pitches.
It seals the shingle surface, while ice dams come from heat and drainage at the eave. Damaged eave rows get repaired before coating, gutters get cleared, and we point out ventilation problems that make ice worse so they can be fixed alongside the coating work.
They can. When the coated shingles eventually wear out, they come off with the coating during a normal tear-off. Coating buys time on a roof that is still in good shape, and it leaves the later choice open.
Send photos or describe the shingles. We will walk the roof and tell you whether coating or reshingling fits.