Onduline roofing sheets typically cost about $30-$60 per sheet before delivery, while a straightforward installed roof may run $4-$9 per square foot. Final pricing depends on the sheet model, overlap and waste, roof pitch, labor, shipping, and whether old roofing must be removed; U.S. availability can also affect the delivered price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Onduline sheet | $30 | $45 | $60 | Per sheet; model and seller affect price |
| Sheets only | $1.25 | $1.75 | $2.50 | Per roof sq. ft.; excludes overlap waste and delivery |
| Installed roof | $4 | $6.50 | $9 | Per sq. ft.; simple roof and standard access |
| 1,000-sq.-ft. roof | $4,000 | $6,500 | $9,000 | Installed; excludes major structural repairs |
What Onduline sheets cost for a typical roof
For budgeting, allow $4-$9 per roof square foot installed for a basic Onduline covering on a sound, accessible roof. A 500-square-foot outbuilding might total $2,000-$4,500, while a 1,000-square-foot roof could run $4,000-$9,000. Complex roof geometry, removal, or remote delivery can move a quote above those ranges.
A sheet is commonly about 6.5 feet long by 3.1 feet wide, though dimensions vary by product and market. The gross area is roughly 20 square feet; side and end overlaps reduce the area each sheet covers. A practical material allowance is approximately $1.25-$2.50 per roof square foot for sheets, before fasteners, underlayment, battens, and waste.
Assumptions: U.S. budget estimates, standard Onduline-type corrugated bitumen sheets, ordinary access, and no major deck repair. Verify the exact model, coverage, and availability with the seller.
These prices are estimates rather than a guaranteed national retail rate. Onduline products may be less readily stocked in some U.S. areas than common metal or asphalt roofing. A low sheet price can be offset by freight, minimum order quantities, or a longer delivery lead time. Compare delivered cost per covered square foot, not just the price per sheet.
How sheets, battens, fasteners, and labor shape the quote
A contractor’s estimate should distinguish the roofing sheets from the support materials and installation tasks. The table gives common planning ranges for a simple roof; totals vary with pitch, chosen accessories, local labor, and the condition of the existing roof.
| Quote component | Typical price | Pricing basis | What changes it |
|---|---|---|---|
| Onduline sheets | $1.25-$2.50 | Per roof sq. ft. | Model, purchase quantity, freight |
| Battens and edge timber | $0.50-$1.50 | Per roof sq. ft. | Spacing, lumber grade, roof layout |
| Underlayment and flashing | $0.40-$1.50 | Per roof sq. ft. | Roof details and water-management needs |
| Fasteners and accessories | $0.15-$0.60 | Per roof sq. ft. | Approved fasteners, caps, ridge pieces |
| Installation labor | $1.50-$4.00 | Per roof sq. ft. | Pitch, height, access, crew rate |
| Removal and disposal | $1.00-$3.00 | Per roof sq. ft. | Existing material and disposal rules |
Not every project needs every line item. For example, a new shed roof may not require tear-off, while a reroof may need disposal and deck inspection. Flashing, eaves, ridges, valleys, and wall intersections require detail work that a simple per-square-foot rate may not fully capture. Ask whether the estimate includes those pieces.
Contractors may quote labor as a total rather than an hourly charge. As a cross-check, small roofing crews may bill roughly $50-$100 per worker-hour in labor and overhead, with two or three workers on a modest job. should be considered alongside the full scope, not treated as a substitute for a written project quote. Request separate material, labor, and removal totals to identify what is driving the price.
Sheet coverage, roof pitch, and layout change material needs
The number of sheets is not simply roof area divided by a sheet’s outside dimensions. Overlaps reduce usable coverage, and the product’s installation instructions specify the required side lap, end lap, and fastening pattern. Confirm those details for the exact sheet before ordering; ordering from gross dimensions alone can leave a roof short.
Roof pitch and geometry can raise both material and labor costs. A low, uncomplicated roof with few edges is usually faster to cover than a steep roof with dormers, valleys, hips, or multiple penetrations. On a roof above about 6:12 pitch, additional fall protection, staging, and slower handling can add roughly 10%-25% to labor, depending on access and local safety requirements.
Waste commonly adds about 5%-10% to sheet quantities on a simple rectangular roof. A roof with many cuts or irregular sections may need 10%-15% extra. For instance, a 400-square-foot roof requiring 5% waste needs about 420 square feet of effective coverage—not 400 square feet of gross sheet area. Verify a takeoff that uses the actual roof dimensions and overlap.
Support spacing also matters. Onduline products require installation over an appropriate supporting structure, and the required support method can vary with roof pitch and product instructions. If the existing rafters or battens are spaced too widely, adding or replacing supports increases lumber and labor. Get the sheet layout and support spacing confirmed before buying materials.
Planning threshold: roofs with more than 10% cut waste, pitch above 6:12, or several valleys and penetrations deserve a project-specific material takeoff rather than a simple area allowance.
Removal and deck repairs can add thousands to installation
Installing sheets over an existing roof is not automatically an acceptable way to lower the price. The existing assembly must be suitable under the product instructions and local code, and hidden moisture or damaged decking can compromise the new roof. A contractor should state whether the quote assumes a sound deck and what happens if deterioration is discovered.
Removing one layer of common roofing may add about $1-$3 per square foot for labor and disposal. Multiple layers, difficult access, heavy materials, or local disposal charges can push removal higher. A 1,000-square-foot reroof could therefore add $1,000-$3,000 before repairs. Hazardous materials require specialized assessment and handling, which is not included in ordinary tear-off pricing.
Localized deck repairs are often priced separately, sometimes around $75-$150 per sheet of plywood installed, depending on thickness, material, access, and regional labor. Replacing extensive sheathing can add substantially more. Confirm whether the bid includes a unit price for replacement decking and whether it includes underlayment, flashing, ridge details, and hauling.
Delivery is another potential surprise when the sheets are not stocked locally. Freight can add $100-$500 or more for a small or distant order, particularly when a dedicated truck, liftgate, or special handling is needed. Ask for a delivered quote and check whether the seller requires full-sheet quantities. Budget removal and delivery separately from the sheet price.
What changes with 500-square-foot and 1,000-square-foot jobs
Smaller buildings can cost more per square foot because setup, travel, minimum labor charges, and delivery are spread across less roof area. A contractor may apply a minimum charge even if the roof is only a few hundred square feet. Larger jobs often improve labor efficiency, but do not necessarily lower material pricing if the product must be shipped in limited quantities.
| Example job | Sheets and accessories | Labor and site work | Estimated total |
|---|---|---|---|
| 300-sq.-ft. shed, simple layout | $500-$900 | $800-$1,500 | $1,300-$2,400 |
| 500-sq.-ft. outbuilding, standard access | $850-$1,500 | $1,150-$2,500 | $2,000-$4,000 |
| 1,000-sq.-ft. home roof, moderate details | $1,700-$3,000 | $2,300-$5,500 | $4,000-$8,500 |
Examples assume sound roof framing and do not include major deck replacement. The home-roof example may require more flashing, edge finishing, setup, and fall protection than a shed. Add tear-off, unusual freight, or structural work as separate allowances. A contractor’s minimum could push a small shed project above the low end even when its material quantity is modest.
Before accepting a total, check the measured roof area, sheet count, waste allowance, and unit prices for added decking or removal. The table is useful for screening quotes, not for specifying a particular roof. A quote that explains its assumptions is more useful than a lower total with omitted work.
How U.S. location and delivery affect Onduline pricing
Pricing can vary more because of product availability and freight than because of the sheet itself. Areas near a distributor or supplier may have lower delivery charges; a buyer several states away may face a larger freight bill or fewer purchasing options. Rural addresses, islands, and sites with restricted truck access can require additional handling or delivery arrangements.
Labor commonly varies by roughly 10%-25% between lower-cost rural markets and major metropolitan areas, but local demand and contractor availability can reverse that pattern. Higher-cost markets may also require more expensive insurance, permits, or scaffolding. For an apples-to-apples comparison, ask contractors to use the same roof area, product, removal scope, and accessory list.
Delivery timing matters when the sheets are special order. A rush shipment or split delivery can cost more than a consolidated order, while a seller’s advertised price may exclude tax and freight. Request a written delivered-material total with the destination ZIP code. For a distant order, compare local alternatives using installed price and serviceability, not sheet price alone.
Onduline versus metal and asphalt roofing prices
Onduline is a lightweight corrugated bitumen roofing option, often considered for sheds, agricultural buildings, and other straightforward roofs. Its material price can be moderate, but limited local supply may make the total less attractive. Basic corrugated metal panels commonly run about $2-$5 per square foot for materials and roughly $5-$12 installed, depending on gauge, coatings, flashing, and labor.
Asphalt shingles are widely available and may cost about $1-$2.50 per square foot for shingles alone, with many standard installations around $4-$8 per square foot. Shingles are not a direct substitute on every low-slope roof or structure; minimum pitch, underlayment, and local code requirements matter. Compare the complete assembly and warranty conditions rather than just the covering material.
Onduline’s price advantage, if any, depends on the finished scope. A small outbuilding with simple framing may benefit from light sheets and relatively straightforward installation. On a complex house roof, extra detailing or scarce accessories can narrow any material savings. Ask a contractor to price Onduline and one locally available alternative for the same measured roof and detail scope. The lowest material price does not necessarily produce the lowest installed price.
Lower the bill by controlling sheet count and project scope
Measure each roof plane and include the eaves, ridges, valleys, and overhangs before requesting quotes. A scaled sketch or contractor takeoff can reduce over-ordering while avoiding a shortage that triggers a second freight charge. Do not reduce overlap or omit required fasteners to save money; follow the instructions for the selected product and roof conditions.
Compare at least three written estimates that specify the sheet model, coverage assumption, underlayment, battens, fasteners, flashing, disposal, and delivery. Confirm whether contractors are pricing the same roof area and whether tax, permits, and deck repairs are included. If one quote is markedly lower, ask what materials or tasks it excludes rather than judging by the total alone.
Where the roof is structurally sound and the existing covering can remain under applicable instructions and rules, avoiding unnecessary tear-off may save labor and disposal fees. Conversely, covering damaged decking can create a more expensive failure later. Ask for photographs of suspected damage and a clear per-sheet repair rate before work begins.
Choose accessories and finish options based on the actual roof design, not an automatic upgrade package. Consolidating delivery, ordering the full required quantity at once, and scheduling outside a contractor’s peak period may help, although savings are not guaranteed. Keep the scope complete, but remove upgrades and services that are not required for a sound installation.