The bottom line: Grade B shingles are architectural asphalt shingles with minor cosmetic variations — overstock, discontinued colors, or slight color inconsistency between bundles. They perform identically to Grade A: same wind ratings, same fire ratings, same waterproofing. Florida contractors who use Grade B on the right jobs save $200–$500 per roofing square compared to retail Grade A pricing.
What Exactly Is a Grade B Shingle?
The roofing industry does not have an official universal "Grade A / Grade B" standard defined by ASTM or building codes. In practice, the terms are used by distributors and contractors to describe shingles based on their origin and cosmetic condition:
Grade A — First Quality
Grade A shingles come directly from the manufacturer meeting every specification: consistent color, correct dimensions, full granule coverage, and first-run packaging. These are what you find at retail roofing supply houses at standard pricing.
Grade B — Overstock & Cosmetic Seconds
Grade B shingles fall into a few categories:
- Overstock: Manufacturer produced more than the market absorbed — perfectly new shingles, sometimes stored longer than typical.
- Discontinued colorways: A popular shingle color that's been phased out. Full performance, just no longer in the active catalog.
- Cosmetic seconds: Slight color variation between bundles or minor surface inconsistency that doesn't affect waterproofing or wind resistance.
- Excess inventory: Material from canceled large orders or builder surplus.
What Grade B shingles are NOT: damaged, compromised, wet, or structurally defective shingles. Shingles with actual performance defects are not sold as Grade B — they're discarded.
Performance: Grade A vs Grade B Side by Side
| Rating / Feature | Grade A | Grade B |
|---|---|---|
| Wind resistance | ✅ 110–130 mph | ✅ 110–130 mph |
| Fire rating | ✅ Class A | ✅ Class A |
| Waterproofing | ✅ Full | ✅ Full |
| Florida Building Code | ✅ Compliant | ✅ Compliant |
| Lifespan | 25–40 years | 25–40 years |
| Color consistency | Exact match guaranteed | Slight variation possible |
| Packaging | Current standard | May vary |
| Price at JJJ Supplies | From $90/sq | From $77/sq ✅ |
The only real difference between Grade A and Grade B is cosmetic. For any job where the homeowner or inspector isn't going to be counting individual shingles and comparing color swatches, Grade B performs exactly the same.
The Real Numbers: How Much Do You Save?
On a crew running 3-4 jobs per week, that's $1,170–$1,560 in material savings every week — without changing anything about how you work or the protection you deliver to your customers.
Scale that over a full season and Grade B shingles can add $50,000+ to your bottom line annually compared to buying Grade A at retail for every job.
When to Use Grade B — and When Not To
Does Grade B Pass Florida Inspection?
This is the most common question from contractors who haven't used Grade B before. The answer is yes — and here's exactly why.
Florida building inspectors evaluate shingle installations based on:
- The product's wind resistance rating (must meet local requirements)
- The nail pattern used (6-nail in high-wind zones)
- Proper underlayment installation
- Correct starter course application
- Flashing and penetration sealing
What inspectors do NOT check:
- Whether the shingles are classified as Grade A or Grade B
- Whether the color is from a "current" colorway
- Whether all bundles match each other perfectly
Grade B shingles have the same product approvals, UL ratings, and ASTM certifications as Grade A. The "Grade B" designation is a supply chain / commercial term — not a building code classification. Your installer license and your crew's installation technique matter far more to the inspector than where in the supply chain the shingles came from.
How to Order Grade B Shingles at JJJ Supplies
JJJ Supplies keeps Grade B architectural shingles in stock for same-day delivery across the Bradenton-Tampa-Sarasota corridor. Here's how it works:
Step 1 — Check availability
Grade B inventory changes based on what's available from manufacturer overstock and discontinued lots. Call or WhatsApp 941-580-4243 to check what's currently in stock and what colors are available.
Step 2 — Confirm quantity
Tell us the number of squares you need. We'll confirm we have enough from the same lot to cover your job — important for color consistency across the roof.
Step 3 — Same-day delivery
Order before noon and we deliver to your jobsite the same day. No minimum order. We deliver directly to the roof — not just to the curb.
When using Grade B, always order enough to complete the entire roof from the same lot. This ensures maximum color consistency. If you need to order more later, the next lot may vary slightly in color.
Add 10-15% waste factor when calculating your order. It's better to have a few extra bundles than to run short mid-job.