Charcoal cap color; ~33.33 sq ft per bundle (per major retailer listings)
Key features
LayerLock / StrikeZone platform features carried through HDZ RS line (per GAF)
Documented for cool roof pathways via HDZ RS literature (verify jurisdiction)
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 with cool-roof reflective surfacing (Timberline HDZ RS / Reflector line per GAF documentation) |
| Fire rating | UL Class A fire classification (ANSI/UL 790) per GAF Timberline HDZ RS line documentation |
| Construction type | Laminated architectural strip shingle (Timberline HDZ Reflector / HDZ RS) |
| Application area | Steep-slope asphalt shingle roof systems installed per GAF requirements; WindProven limited wind warranty requires qualifying GAF accessory system; cool roof compliance is project- and jurisdiction-specific per published datasheets |
Product details
Charcoal remains a dominant architectural roof color because it frames painted siding, brick, and metal accents with strong contrast while still reading as a conventional residential choice.
On the HDZ RS line, the same aesthetic comes with reflective granule technology positioned for cool-roof documentation pathways; anchor those discussions to the HDZ RS specification sheet and GAF’s published CRRC and Title 24–oriented language for the line.
Bundle coverage is commonly listed near 33.33 square feet per bundle; treat that as a planning input and confirm with bundle labeling before final ordering.
Because similar color names can appear across multiple channels with different item numbers, inventory control should prioritize manufacturer model numbers and physical bundle markings.
System components—starter, leak barrier strategy, ridge cap, and ventilation—should be planned as an integrated assembly rather than as isolated SKUs.
WindProven eligibility is program-specific; align sales language with GAF’s current accessory requirements to avoid over-promising warranty outcomes.
For insurer or code questions about reflective performance, separate marketing tone from the actual datasheet tables and approvals applicable to the installed product.
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; CRRC rated; ASTM D3462, D7158, D3161, D3018 Type I (per GAF Timberline HDZ RS specification sheet)
Frequently asked questions
How many bundles are in a square for Timberline HDZ Reflector?
How many bundles are in a square for Timberline HDZ Reflector?
GAF documents Timberline HDZ RS (Reflector) shingles at about 33.33 sq ft per bundle with three bundles per square (100 sq ft) for the line. Always confirm coverage on the physical bundle label and add waste for cuts and details.
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.
Do Timberline HDZ Reflector shingles satisfy cool roof or Title 24 requirements?
Do Timberline HDZ Reflector shingles satisfy cool roof or Title 24 requirements?
GAF markets Timberline HDZ RS as CRRC rated and references pathways such as California Title 24 Part 6 cool roof requirements in its product literature. Final compliance depends on color SKU, climate zone, and the exact code edition—use the current HDZ RS specification sheet and local amendments for submittals.
Can I mix Reflector colors or SKUs across the same roof plane?
Can I mix Reflector colors or SKUs across the same roof plane?
For appearance and warranty continuity, use consistent product lines and approved blends within a roof area. For warranty-backed projects, follow GAF's written guidance and contract documents rather than field-mixing unmatched SKUs.