Atlas StormMaster Slate
DiscontinuedAtlas no longer makes StormMaster Slate. The exact end-of-production date has not been confirmed from an Atlas document.
SBS polymer-modified asphalt shingle on a fiberglass mat.
About StormMaster Slate
StormMaster Slate was part of Atlas's StormMaster family of SBS polymer-modified asphalt shingles on a fiberglass mat. The rubberized asphalt is what earned it a UL 2218 Class 4 impact rating, which is why so many Oklahoma homeowners chose it for the hail discount.
The look imitates slate: a wide, flat tab pattern rather than the ragged shadow line of a standard architectural shingle. Later production carried Scotchgard algae protection. Colors included Weathered Slate and Chalkstone Slate.
How to recognize it
From the street the roof reads as evenly spaced rectangular tabs, closer to a three-tab pattern than a dimensional shingle, but with a heavier, flatter slate-style shadow.
Up close, each shingle has four long tabs with about an eight-inch exposure. That extra tab length is the tell, and it is also the weak point: the tabs unseal and tear back in wind before the rest of the roof shows wear.
Wind damage on this product usually shows as creased or missing tabs on the windward slopes with the rest of the shingle still intact.
What to photograph
- Whole front slope from the curb, straight on, in daylight.
- A tight photo of one shingle course showing the tab shape and the exposure (a tape measure in frame helps).
- Any lifted, creased or missing tabs, with the slope they are on noted.
- The wrapper or a leftover bundle in the garage if you still have one. That settles the product name.
Have these ready. The request form takes your details and notes; Matt replies personally and tells you where to send the photos.
Can it be repaired with matching material?
Atlas does not make new StormMaster Slate. A spot repair depends on whether a lab or discontinued-materials service can locate matching stock, and that is decided by sending a physical sample, not by the name alone.
When no stock exists, the repair conversation becomes a matching conversation: how much of the roof can be repaired with a different product and still look and perform like one roof. Matt documents that with photos and a sample before anyone argues about it.
What the manufacturer offers now
Atlas's current Class 4 lines (StormMaster Shake and Pinnacle Impact) are different profiles. They keep the impact rating but they do not blend into a StormMaster Slate slope.
If the roof is replaced, staying with a Class 4 product keeps most insurers' impact-resistant discount in place. Confirm the specific product against your carrier's approved list before ordering.
Where Matt sees it
Matt has inspected StormMaster Slate roofs in the Oklahoma City metro that were only five to ten years old and already showing tab damage on the windward slopes.
Because it was sold as a hail-rated upgrade, it shows up in neighborhoods built or re-roofed in the 2010s where Class 4 discounts were being pushed.
Insurance claim, manufacturer warranty, or a cash repair
Wind or hail damage is a claim against your homeowner policy. Matt photographs the damage slope by slope, sends a sample for independent identification when the product is in question, and builds the scope from what the evidence supports. Whether the outcome is a repair or a replacement is decided case by case from your policy and the documentation, not from the word discontinued.
Atlas's limited warranty still applies to a discontinued product; discontinuation by itself does not void it. Whether tab failure is a warranty matter or a storm matter is a documentation question, and Matt keeps the two separate. A manufacturer warranty review is a separate process from an insurance claim. It starts with the original purchase or installation records and the manufacturer's own inspection, and each claim is reviewed on its own facts. Matt can document the roof condition for it; he cannot promise how the manufacturer will decide or what, if anything, the homeowner will pay.
For a few damaged pieces with no storm and no defect pattern, a straightforward paid repair with the closest available material is often the sensible call. Matt tells you when that is the case and what the repair will look like from the ground before he does it.
Atlas StormMaster Slate questions
My StormMaster Slate roof lost a few tabs in a storm. Does that mean a whole new roof?
Not by itself. It means the repair has to be documented properly: a sample goes to an independent lab to confirm whether matching stock exists, the storm damage is photographed slope by slope, and the scope follows what the evidence supports. Sometimes that is a repair, sometimes it is a slope or full replacement.
Is a discontinued shingle a defective shingle?
No. Discontinued means the manufacturer stopped making it. StormMaster Slate does have a known weak point in its long tabs, but that is a separate question from why Atlas retired the line, and Matt does not claim to know Atlas's reasons.
Should the replacement be Class 4 again?
Usually yes. If your policy gives you an impact-resistant discount, replacing Class 4 with Class 4 keeps it. Matt checks the replacement product against your carrier's list before it is ordered.
Sources checked
Product status changes. Each item below is dated to when it was published or last checked. Roofing 101 field records are Matt's own inspections and claim files with customer details removed.
- ManufacturerAtlas Roofing: StormMaster product family (name change notice for StormMaster LM / Shake) (2026-09-27)
- ManufacturerAtlas StormMaster Slate general installation instructions (product specifications) (2026-09-27)
- Trade / distributorTrade catalog listing StormMaster Slate as a discontinued product (2026-09-27)
- Roofing 101 field recordRoofing 101 field inspection notes, Oklahoma City metro, July 2026 (anonymized) (2026-07-01)
Keep going
Discontinued Shingles
How discontinued shingles are identified, documented and handled on an Oklahoma claim.
Read more →Elk Capstone
Elk's slate-look laminated shingle from the 2000s. Retired after GAF bought Elk in 2007, so a damaged Capstone roof is a matching question from day one.
Read more →CertainTeed Belmont
A luxury slate-look shingle common on higher-end Oklahoma City-area roofs, almost always the Class 4 IR version. The exact variant drives both insurance paperwork and any manufacturer warranty review.
Read more →Think this is what is on your roof?
Start a request and have the photos from the checklist ready. Matt identifies the product, tells you what the repair or claim path actually looks like, and confirms the assessment details before any visit.