Timberline HD and Timberline HDZ shingles typically cost about $100-$180 per roofing square for shingles alone, with HDZ often costing slightly more when both are available. Installed roof prices commonly run $450-$850 per square, and roof size, tear-off, pitch, and local labor rates drive most of the difference.
The comparison below assumes standard architectural shingles on a typical U.S. home with normal access. A roofing square covers 100 square feet; quotes can differ because the full roofing system includes more than shingles.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Timberline HD shingles | $100 per square | $130 per square | $165 per square | Shingle material only; availability varies |
| Timberline HDZ shingles | $110 per square | $145 per square | $180 per square | Shingle material only |
| Installed roof, either product | $450 per square | $650 per square | $850 per square | Typical tear-off and replacement conditions |
| 2,000-square-foot roof area | $9,000 | $13,000 | $17,000 | About 20 squares before waste adjustments |
Typical Timberline HD and HDZ roof prices
For materials alone, a homeowner may see roughly $100-$165 per square for Timberline HD and $110-$180 for HDZ. A bundle covers about one-third of a square, so indicative bundle prices are approximately $33-$55 for HD and $37-$60 for HDZ. Retail pricing, color, delivery, and contractor purchasing agreements can shift those figures.
For a complete replacement, a 20-square roof commonly totals $9,000-$17,000 before unusual structural repairs or major code upgrades. The price generally includes underlayment, flashing, starter shingles, ridge materials, labor, and disposal. Assumptions: standard architectural shingle installation, ordinary roof access, and no extensive decking replacement. The HDZ material premium is usually smaller than the labor and tear-off portion of the total quote.
What labor, tear-off, and roofing materials add
Contractors price the roof as a system rather than charging only for the visible shingle. The ranges below show typical contributions per roofing square; they are not guaranteed line-item rates, and bundled contractor bids may group several tasks together.
| Quote component | Typical price | What changes the amount |
|---|---|---|
| HD or HDZ shingles | $100-$180 per square | Product availability, color, waste |
| Installation labor | $180-$350 per square | Pitch, height, access, crew rates |
| Underlayment and flashing | $60-$130 per square | Leak barriers, valleys, wall details |
| Removal and disposal | $50-$120 per square | Existing layers, local dump fees |
| Starter, ridge, and ventilation materials | $30-$90 per square | Roof edges, ridge length, vent scope |
Roofing labor often works out to about $45-$85 per worker-hour, though contractors commonly quote by area or project instead. Ask whether the estimate includes tear-off, disposal, underlayment, flashing, and ridge materials before comparing totals.
How roof pitch, waste, and shingle availability change the quote
Roof geometry can matter more than the HD-to-HDZ price gap. A simple roof may need about 5%-10% extra shingles for cuts; a roof with several hips, valleys, dormers, or irregular sections may require 10%-15% or more. That additional material applies to either product.
Steep roofs—often those around 8:12 pitch or higher—can require more setup and slower installation, adding roughly 10%-25% to labor in some markets. A second existing shingle layer may add about $40-$100 per square for removal and disposal. Timberline HD may be harder to source in some areas because HDZ is the more current product, so limited color selection or special ordering can erase any apparent savings. Confirm the exact product name, color, and quantity on the written quote.
Does HDZ’s added price pay off over HD?
When both shingles are locally available, the material difference is often about $5-$20 per square, or roughly $100-$400 on a 20-square roof. Some stores or contractors may price them nearly the same; scarce HD stock can also cost more than HDZ. The installed price difference is typically modest because both use similar tear-off, preparation, and installation labor.
HDZ has product features such as the wider nailing area and LayerLock technology, while Timberline HD is an older product that may appear in remaining inventory. Warranty terms and wind coverage depend on the product, installation method, and any qualifying GAF system components. Compare the exact warranty and installation requirements, not just the shingle line on the estimate.
Three roof sizes show the likely total difference
These examples use a straightforward roof with normal access and include standard replacement work. Actual roof area, local rates, and repair needs can move a quote outside the ranges.
| Roof scenario | HD installed estimate | HDZ installed estimate | Basis |
|---|---|---|---|
| 12 squares, small roof | $5,400-$10,200 | $5,500-$10,400 | About 1,200 square feet of roof area |
| 20 squares, typical home | $9,000-$17,000 | $9,100-$17,300 | About 2,000 square feet of roof area |
| 30 squares, larger roof | $13,500-$25,500 | $13,700-$26,000 | About 3,000 square feet of roof area |
Assumptions: standard tear-off, basic underlayment, and no deck replacement; complex roofs can cost more. The overlap between these estimates is much larger than the typical product-only difference.
Regional labor rates can outweigh the HDZ premium
Roofing quotes in high-cost coastal metros may be about 15%-30% above comparable work in lower-cost rural markets. Suburban rates often fall between those extremes, while storm-related demand can raise prices in any region. Local disposal fees, building codes, and contractor availability also affect the bid.
For example, a $13,000 mid-range quote in a lower-cost market might be closer to $15,000-$17,000 in a costly metro, even with identical shingles. These are broad comparisons, not fixed regional price lists. Compare at least three local estimates based on the same roof measurements and scope.
Ways to lower the Timberline replacement quote
Keep the scope consistent before negotiating. Ask each roofer to state the number of squares, waste allowance, tear-off layers, underlayment type, flashing replacement, ventilation work, and disposal charges. A low bid that omits these items may not be cheaper after change orders.
If HDZ costs only a small amount more, choosing it may be simpler than searching for discontinued or limited HD inventory. Savings are more likely to come from scheduling outside peak storm demand, avoiding unnecessary upgrades, or repairing sound decking rather than replacing it. However, rotted or unsafe decking should not be covered to reduce the initial bill. Request separate prices for required repairs and optional upgrades so the material comparison stays clear.
Questions to settle before signing an HD or HDZ bid
Ask whether the contractor is quoting shingles only or a complete roofing system, and whether the stated price includes tax, permits, delivery, and cleanup. Confirm how extra decking is priced, such as a per-sheet charge, and whether the estimate includes a workmanship warranty. Local permit fees can range from about $100-$500 or more, depending on jurisdiction and project scope.
For a 20-square roof, a $1,000 difference between bids equals $50 per square, far more than the common $5-$20-per-square HDZ material premium. That difference may reflect labor, disposal, warranty coverage, or omitted work rather than shingle choice. Use a written, itemized scope to identify what is actually driving the price.