Algae-resistant listing; ~33.33 sq ft coverage per bundle
Key features
Designer-forward blue-gray colorway in HDZ platform
UL 2218 Class 3 impact for HDZ line (per GAF docs)
Technical specifications
| Thickness | 2.4 in |
|---|---|
| Width | 13.25 in |
| Length | 39.375 in |
| Coverage | 33.33 sq ft/pack |
| Material | Fiberglass-reinforced asphalt architectural laminate |
| Fire rating | UL Class A fire classification (ANSI/UL 790) per GAF Timberline HDZ line documentation |
| Construction type | Laminated architectural strip shingle (Timberline HDZ High Definition) |
| Application area | Steep-slope asphalt shingle roof systems installed per GAF requirements; WindProven limited wind warranty requires qualifying GAF accessory system |
Product details
Biscayne Blue is a designer-forward roof color: it works best when the elevation palette is intentionally coordinated so the roof reads as a designed element rather than an accidental bold accent.
Despite the more expressive color, the underlying product family remains Timberline HDZ, and technical references should still trace to the HDZ specification sheet for line-level UL Class A fire classification and UL 2218 Class 3 impact resistance language.
Bundle coverage is commonly listed near 33.33 square feet per bundle; on saturated granule colors, lot-to-lot shading can be more noticeable across large planes, so ordering full squares from consistent production runs is a practical quality control step.
Accessory compatibility should be confirmed early: starter, ridge, and leak-barrier selections need to match the system assumptions behind warranty narratives and installation instructions.
Wind warranty programs are system-dependent; if WindProven is part of the sales discussion, align the installed accessory set with GAF’s current written program requirements.
StainGuard Plus applies to eligible packages; keep claims conservative and documentation-forward.
For permitting and inspections, lead with manufacturer-published test and classification language rather than retailer marketing blurbs.
Documents & certifications
Technical data sheet
Manufacturer-tested R-value, coverage, fire notes, and handling—use for submittals, RFIs, and field QA.
Download PDF (opens in new tab)Certifications & compliance
UL 790 Class A fire; UL 2218 Class 3 impact resistance; ASTM D3462, D7158, D3161, D3018 Type I (per manufacturer spec sheet for Timberline HDZ line)
Frequently asked questions
How many bundles are in a square for Timberline HDZ?
How many bundles are in a square for Timberline HDZ?
GAF specifies three bundles per roofing square (100 sq ft) for Timberline HDZ with about 33.33 sq ft per bundle. Always verify coverage on the bundle label and add a waste factor for cuts, hips, and valleys.
What is WindProven and does it apply automatically?
What is WindProven and does it apply automatically?
WindProven is GAF's limited wind warranty with no maximum wind speed when the roof is installed with four qualifying GAF accessory products per current GAF program rules. Eligibility is not automatic from the shingle alone; it depends on the full installed system and registration requirements.
Are StainGuard Plus algae warranties the same in every region?
Are StainGuard Plus algae warranties the same in every region?
StainGuard Plus coverage is described by GAF for protection against blue-green algae discoloration on eligible products in packages bearing the StainGuard Plus logo. Final warranty terms, exclusions, and regional availability are defined in GAF's current warranty documents.
Can I mix this bundle SKU with a different color on the same roof plane?
Can I mix this bundle SKU with a different color on the same roof plane?
For appearance and warranty continuity, GAF typically expects consistent product lines and approved color blends within a roof area. For warranty-backed projects, follow GAF's written guidance and your contract documents rather than field-mixing unmatched SKUs.