Charcoal cap; 21-piece bundle format on Home Depot listing
Key features
Dual Shadow Line ultra-dimensional laminate (Timberline UHDZ per GAF)
Confirm bundle labels for UltraMat Class 4 and StainGuard Plus PRO eligibility
Technical specifications
| Thickness | 2.4 in |
|---|---|
| Width | 13.25 in |
| Length | 39.375 in |
| Coverage | 33.33 sq ft/pack |
| Material | Fiberglass-reinforced asphalt ultra-dimensional laminate (Timberline UHDZ with UltraMat per GAF documentation) |
| Fire rating | UL Class A fire classification (ANSI/UL 790) per GAF Timberline UHDZ line documentation |
| Construction type | Laminated ultra-dimensional strip shingle (Timberline UHDZ with UltraMat per GAF) |
| Application area | Steep-slope asphalt shingle roof systems installed per GAF requirements; WindProven limited wind warranty requires qualifying GAF accessory system; UL 2218 Class 4 and StainGuard Plus PRO eligibility depend on package markings per GAF |
Product details
Charcoal UHDZ targets buyers who want a strong neutral roof statement with the ultra-dimensional shadow lines GAF markets for its premium laminate tier.
Technical accuracy requires careful packaging language: UL 2218 Class 4 impact resistance is tied to bundles that include the UltraMat logo and the UL 2218 Class 4 classification statement, per GAF’s product footnotes, and StainGuard Plus PRO warranty pathways are tied to eligible package labeling.
UHDZ documentation also includes UL Class A fire classification and published ASTM references on the UHDZ specification sheet, which is the appropriate submittal anchor for code-oriented conversations.
Listings commonly describe about 33.33 square feet per bundle with 21-piece formats; always reconcile retailer titles to the bundle label before locking quantities.
Because channel-specific listings can describe coverage differently, procurement should treat manufacturer model numbers as the authoritative link between quote and delivery.
Accessory integration and ventilation planning affect both comfort and warranty narratives; document ridge, intake and exhaust balance, and critical leak-barrier locations on plans.
If the customer is comparing UHDZ to HDZ, frame the decision around documented bundle markings, warranty program differences, and budget—not assumptions about identical impact performance across all packages.
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 4 impact resistance on packages bearing the UltraMat logo and UL 2218 Class 4 classification statement (per GAF Timberline UHDZ product page footnotes); ASTM D3462, D7158, D3161, D3018 Type I (per GAF UHDZ specification sheet)
Frequently asked questions
How many bundles are in a square for Timberline UHDZ?
How many bundles are in a square for Timberline UHDZ?
Home Depot lists these UHDZ SKUs at about 33.33 sq ft per bundle with 21 pieces, which matches the common three-bundle per square math used across GAF architectural lines. Always confirm coverage on the bundle label and add waste for cuts.
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.
Are all Timberline UHDZ bundles UL2218 Class 4?
Are all Timberline UHDZ bundles UL2218 Class 4?
GAF states that only Timberline UHDZ shingles sold in packages bearing the UltraMat logo and UL 2218 Class 4 classification statement are rated Class 4. Verify the physical bundle markings for warranty and submittal language; hail damage may still have exclusions in warranty documents.
Can I mix UHDZ colors on the same roof plane?
Can I mix UHDZ colors on the same roof plane?
For appearance and warranty continuity, use consistent product lines within a roof area. For warranty-backed projects, follow GAF's written guidance and contract documents rather than field-mixing unmatched SKUs.