Q&A – Color-matching conundrum

When it comes to repairing part of a roof, it's important to blend it with the original material. For advice on doing this, a homeowner recently reached out to the AskARoofer experts.

William, a homeowner from Maine, reached out for some help identifying a shingle. This is what they asked: 

I am trying to identify a roof shingle from a roof installed by the former owners of my building three to five years ago (approx 2023). The roofing company told me it they used GAF Fox Hollow Gray, but those are decidedly lighter in color than the current shingles (see photograph). We contacted GAF with the code on back BA 4371, and they responded that wasn't an identifying code and they could not provide any information as to what model shingles they were. It's also hard to match shingles at Home Depot, etc, unless you want to rip into the bundles as there aren't samples to look at. We just want to get something close if we can't find the correct match. Any ideas what we can do?

We had a few experts chime in with advice for William. The first response was from the team at Pinnacle Roofing and Skylights: 

First, I would trust the roof you gave you the color name as that would be the best source. Unfortunately, the codes on the back of the shingle, like "BA 4371", are usually manufacturing batch stamps (indicating the plant, shift and date of production) rather than product SKUs. The reason the color may not "match" is that the shingles have weathered and may be slightly darker due to dust, pollen, algea, etc.

If that is not sufficient, I would recommend three other options to get a definitive answer.

1 - Skip Home Depot and go to a roofing supply house

Big box stores only stock a fraction of available colors and keep them wrapped, so unless you can tear a small corner open to see the shingle I would recommend a dedicated roofing supply house as: 

• They have sample boards: These stores have large displays of every brand and color currently manufactured.
• They have loose samples: They often have loose "drop" samples or open bundles they will let you take outside to compare in the sunlight.
• They have experts: The people at the counter look at shingles all day and can often identify a brand and color just by looking at the granule blend and shadow lines.

Ideally, take a physical piece of your shingle to a wholesale roofing distributor (like ABC Supply, QXO or SRS Distribution) so you can match it in person. Alternatively, if you cannot bring a sample to them, see if you can get a sample board to bring home to hold up to the roof shingles.

2 - Consider other GAF colors

If the roofing company was right about the brand (GAF) but wrong about the color, Fox Hollow Gray is one of GAF's lightest grays. If your roof is decidedly darker, it is likely one of these GAF Timberline HDZ alternatives:

• Oyster Gray: A medium, neutral gray that is a distinct step darker than Fox Hollow.
• Pewter Gray: A very popular, darker charcoal-gray.
• Slate: A dark gray with subtle hints of green and red granules.

3 - Send it to the ITEL Lab

If you want a definitive answer without driving around, use ITEL Laboratories. This is the independent testing facility that insurance companies use to match damaged siding and roofing.

• You mail them a physical sample of your shingle (usually a full shingle or a large piece).
• For a fee (typically under $100), they analyze it in their lab.
• They will send you a report stating the exact brand, product line and color.
• If the exact shingle is discontinued, they will list the closest available matches currently on the market.

It is also entirely possible the contractor misremembered the brand altogether. The equivalent grays in rival brands that you might want to cross-reference are Owens Corning "Estate Gray" or CertainTeed "Georgetown Gray".

Additionally, Jeremy from Stellar Roofing shared some thoughts: 

First thing — that BA 4371 code probably isn't a color code, which is why GAF couldn't do anything with it. GAF's color codes print as a name plus an alphanumeric string (something like "CHARCOAL DA180B"), where the letters point to the product line and the numbers to the color. A short code like BA 4371 reads more like a plant/production run stamp. So GAF wasn't ducking you, they genuinely couldn't ID it from that.

Before you give up on finding the exact shingle, there are three ways to trace it that work better than eyeballing:

1. Chase the paper trail on the install: Pull the building permit from your town for that 2023 roof — it'll name the roofing contractor. That contractor's supply house (QXO [formerly Beacon], ABC, SRS, whoever's local to you) keeps purchase history going back years and can pull the actual order tied to your address. That's the single most reliable way to get the exact product and color.
2. Call GAF's warranty department, not tech support: If the roofer registered a warranty, it's tied to your address and lists the exact shingle and color. Different department, different answer.
3. Check the attic, garage and shed: Leftover bundles get stashed constantly. Even a torn wrapper has everything you need printed on it.

Also — pull a shingle from a hidden spot and flip it. The back side is often printed with the color name in plain English, not just a code. Check a few, since the printing skips shingles.

Now the part nobody wants to hear: Even if you find the exact color, a fresh bundle won't match a three-year-old roof. Granules weather, lose their sheen and pick up dirt. Manufacturers also run color lots that vary slightly between production runs. So "correct product" and "visual match" are two different goals.

Here's how we handle it in the field: Harvest good shingles off a hidden slope — the back of a garage, a shed roof, behind a chimney or dormer — and use those for the visible repair. Then put the new shingles in the hidden spot where nobody's looking. When you do have to install new material somewhere visible, scatter and feather it in rather than laying a solid block. The eye catches a rectangle patch; it won't catch a few blended-in shingles.

And skip Home Depot for color matching — you're right that you can't see anything without tearing into bundles, and they only stock a handful of colors. Take an actual shingle off your roof to a real roofing distributor. They have full sample boards, they'll let you hold your shingle right up against them in daylight, and it's free.

On finding something close: Worth flagging that Fox Hollow Gray is a light, cool gray with icy undertones. If your roof reads clearly darker than that, either the roofer substituted something or the color you were told isn't what's actually up there. That's your first clue.

We're an IKO installer, so I'll point you at that line — IKO is well distributed in Maine and any dealer up there can get you samples:

• Cambridge Dual Grey: Two-tone light/medium gray, if your roof is only a shade darker than Fox Hollow
• Cambridge Harvard Slate: Medium-dark gray with a slate look, if it reads distinctly darker
• Cambridge Driftwood: Gray with warm brown running through it, if there's any tan in your blend
• Dynasty Frostone Grey or Summit Grey: Cool medium grays, and Dynasty is a heavier shingle with a Class 3 impact rating, which matters in Maine

Get physical samples in hand. Don't judge from a website or a printed brochure — neither one is accurate. Hold the samples against your roof at the same angle, once in midday sun and once on an overcast day. Colors move a lot between the two.

Last thing: If the repair area is large or sits on a highly visible slope, seriously consider redoing that whole plane out to a natural break — a ridge, hip or valley. A full slope in a slightly different gray reads as intentional. A patch in a slightly different gray reads as a patch, forever.

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