Choosing shed roofing materials starts with the roof’s slope and construction—not just the color or price of the covering.
Asphalt shingles, metal panels, roll roofing, and membranes have different installation requirements. A product that works on one shed may be unsuitable for another, even when the roofs look similar.
The practical approach is to shortlist products that suit your roof, then compare the complete system: covering, supporting deck, underlayment, edges, flashings, fasteners, and installation.
That helps you avoid buying an inexpensive covering and discovering later that it needs additional materials or a different roof arrangement.
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Still choosing your shed design? Explore My Shed Plans. Check the roof slope, framing, and specified covering before purchasing roofing materials.
Start With These Five Details
Before comparing products, identify:
- Roof slope: How steep is the roof?
- Supporting surface: Does it have continuous sheathing, purlins, or another specified arrangement?
- Design loads: Which roofing materials does the structure allow?
- Roof shape: How many slopes, edges, intersections, and penetrations need detailing?
- Installation method: Can you carry out the complete system, or will you hire a roofer?
Our shed roof framing guide explains the structure beneath the covering.
Do not change the roof’s weight, support arrangement, or slope without checking that the design remains suitable.
Shed Roofing Materials at a Glance
| Material | What makes it worth considering | Main checks |
|---|---|---|
| Asphalt shingles | Familiar appearance and individual overlapping units | Minimum slope, deck, underlayment, and fastening |
| Exposed-fastener metal panels | Large panels with defined matching accessories | Exact profile, slope, supports, laps, and screw details |
| Concealed-fastener metal systems | Concealed attachment in compatible systems | Product-specific slope, clips, seams, and installation equipment |
| Mineral-surfaced roll roofing | A roll-applied covering available for some small roof projects | Permitted slope, substrate, laps, and edge treatment |
| EPDM or another specified membrane | A possible option for a suitable low-slope design | Complete system, substrate, seams, adhesives, and drainage |
| Corrugated bitumen panels | Lightweight-format panels in proprietary systems | Product-specific support, slope, laps, and fasteners |
These are categories, not interchangeable products. Read the instructions for the exact material you intend to buy.
1. Asphalt Shingles
Asphalt shingles may suit a shed where the roof design permits them and you want a familiar pitched-roof appearance.
The covering consists of overlapping units installed over the specified deck and underlayment system.
Check the Minimum Slope
Do not assume shingles work on every sloping roof.
For example, GAF’s guidance permits almost all of its shingles on slopes as low as 2:12, subject to the product instructions and additional low-slope requirements. That is not permission to use every shingle product in every situation.
Check the current instructions for your chosen shingles.
Price the Complete Shingle Roof
Your order may need to include:
- Specified roof deck.
- Underlayment and any required leak barriers.
- Starter components.
- Field shingles.
- Ridge components, where applicable.
- Edge metal and flashing.
- Required fasteners.
- Ventilation components shown in the design.
Do not price only the visible shingle bundles.
For a small shed, accessories and packaging quantities can make a noticeable difference to the total.
2. Exposed-Fastener Metal Panels
Exposed-fastener panels use visible fasteners as part of their attachment system.
They can cover a substantial area per panel, but the installation still requires careful layout and the correct accessories.
Check the specified:
- Support arrangement.
- Minimum slope.
- Panel coverage width.
- Side and end laps.
- Fastener pattern and installation.
- Closures, trim, and flashing.
- Sealants where required.
Metal Roofing Has No Single Minimum Slope
The permitted slope varies by profile and system.
For example, MBCI lists a minimum slope of ½:12 for its PBR profile, while its Slimline system lists 3:12. These figures illustrate why “metal roofing” is too broad a description for selecting a product.
Use the exact profile’s complete installation requirements.
Plan Panel Handling
Long panels can be awkward to transport and control. Check delivery, storage, cutting, and lifting arrangements before ordering.
Include appropriate help and safe access in the installation plan.
3. Concealed-Fastener Metal Systems
Some metal roofs conceal the attachment beneath seams or use clips designed for the selected system.
This is a different installation arrangement from simply screwing a corrugated sheet to the framing.
Before choosing one, ask:
- Is it suitable for this roof slope?
- What substrate or supports are required?
- How are panels attached?
- Does installation require specialist seaming equipment?
- Which edge and penetration details apply?
- Are there installer requirements for the proposed warranty?
The appearance may be appealing, but assess the complete installation rather than choosing from a photograph alone.
4. Mineral-Surfaced Roll Roofing
Roll roofing is available for some small residential roof applications, including sheds.
However, the phrase “roll roofing” does not mean that every product is suitable for a flat roof.
For example, GAF’s Mineral Guard product page specifies applications at 2:12 slope and greater. Other rolled systems have different requirements.
Check the exact product rather than relying on the packaging format.
What to Compare
Review:
- Permitted slope.
- Deck requirements.
- Underlayment instructions.
- Lap dimensions.
- Attachment method.
- Edge details.
- Installation conditions.
Do not confuse a finished roof covering with an underlayment or base sheet that is intended to be covered by another layer.
5. EPDM and Other Roofing Membranes
A specified membrane system may be appropriate for a suitable low-slope shed roof.
EPDM is one option, but membranes are not all installed the same way. Systems can differ in attachment, substrate, seams, accessories, and installer requirements.
Buy a Compatible System
Check the requirements for:
- The supporting deck or substrate.
- Adhesives and primers.
- Seams and flashing.
- Perimeter attachment.
- Penetrations.
- Drainage.
- Installation temperature and surface condition.
Do not mix adhesives, tapes, and membrane products without confirmation that the combination is permitted.
Some systems also have approved-applicator requirements. Establish those before assuming the work is a beginner DIY task.
Low Slope Still Needs Drainage Planning
A membrane is not a reason to ignore roof drainage.
Use the roof design and selected system’s requirements to establish how water leaves the surface. Address depressions, outlets, and edge details before installation.
6. Corrugated Bitumen Panels
Corrugated bitumen panels are another product category to investigate for an appropriate shed design.
Their installation requirements are specific to the product and region.
For example, Onduline’s ONDURA guidance identifies different support arrangements depending on slope and snow load.
Confirm the exact panel’s:
- Roof slope limits.
- Support requirements.
- Laps.
- Fasteners and fixing positions.
- Ridge and edge accessories.
- Handling instructions.
Do not substitute instructions from another similarly named corrugated product.
Comparing roof options before choosing a shed? Take a look at My Shed Plans. Check the covering specified for your shortlisted design and review any proposed substitution before buying materials.
Compare Total Cost, Not Just Price per Sheet
The cheapest visible covering may not create the cheapest completed roof.
Prepare a complete order for each suitable option.
| Cost category | What to include |
|---|---|
| Main covering | Bundles, panels, rolls, or membrane |
| Supporting layers | Required deck, underlayment, or other specified layers |
| Edges and intersections | Flashing, trim, closures, ridge components |
| Attachment | Fasteners, clips, adhesives, primers, or tapes |
| Installation | Tools, equipment, access, and paid help |
| Delivery and waste | Transport, package rounding, and cutting allowances |
Use our shed materials list guide to organize the order.
Then add the complete roofing total to your shed-building budget.
Calculate the Actual Roof Area
The shed’s floor area is not the same as its roof area.
Include the slopes and overhangs shown in the drawings.
For a simple rectangular roof plane:
Area = roof length × sloping roof width
For a roof with two rectangular planes, calculate each plane and add them.
Use dimensions from the design or measurements taken with a safe method. Do not climb onto an unfinished roof just to obtain a measurement.
Check Effective Coverage
Product dimensions and installed coverage can differ.
Metal panels overlap. Rolled products have laps. Shingle quantities depend on the selected product and roof layout.
Use the manufacturer’s effective coverage information and account separately for edges, ridges, and other accessories.
Avoid applying the same waste percentage blindly to every system.
Check Weatherproofing Details Before Installation
Roof edges, wall intersections, and penetrations deserve attention before the main covering is installed.
Ask how the design handles:
- Eaves and roof edges.
- Ridges.
- Connections to an adjoining wall.
- Vents or other penetrations.
- Water discharge near the shed entrance.
Use the specified flashing and accessories. A bead of general-purpose sealant is not an automatic replacement for a missing detail.
If the shed is attached to another building, coordinate the junction with that building’s construction rather than treating it as a freestanding roof.
Consider Condensation Separately From Leaks
Moisture inside a shed does not always come from a hole in the roof.
The intended use, moisture sources, insulation, ventilation, and roof assembly can influence condensation risk.
Ask how the selected assembly manages moisture, particularly if you intend to insulate or heat the shed later.
Do not assume that a roof-covering change or an added vent alone will resolve every moisture problem.
Compare Maintenance and Warranty Terms
Read the product’s maintenance and warranty documents before deciding.
Check:
- Required inspections.
- Cleaning restrictions.
- Repair methods.
- Fastener or sealant maintenance where applicable.
- Installation conditions.
- Coverage exclusions.
- Whether workmanship is covered separately.
A warranty duration is not a promise that the roof will need no maintenance for that period.
Also ask whether replacement components and compatible repair materials are readily available.
Which Roofing Material Is Easiest for a Beginner?
There is no universal answer.
A familiar product with clear instructions may be more manageable than a system requiring specialist tools. However, roof height, slope, component size, and edge details also affect the difficulty.
Read the installation manual before buying.
If you can understand the covering but cannot safely access the roof or handle the materials, hire appropriate help for that stage.
Our tools needed to build a shed guide helps you plan equipment and access needs.
Common Roofing Selection Mistakes
Choosing Before Checking the Slope
Eliminate unsuitable products first.
Assuming All Metal Profiles Are Equivalent
Check the exact panel and its installation details.
Treating Every Rolled Product as a Finished Roof
Confirm whether it is a covering, underlayment, or part of a multilayer system.
Forgetting Accessories
Edges, fasteners, flashings, and closures belong in the original order.
Changing Materials Without Checking the Structure
Confirm weight and support compatibility.
Planning to Solve Missing Details With Sealant
Obtain proper junction and flashing instructions before installation.
Frequently Asked Questions
What is the best roofing material for a shed?
Choose a complete system compatible with the roof’s slope, structure, exposure, intended use, and installation arrangements. There is no single best material for every shed.
Is metal roofing better than shingles?
It depends on the specific products and project. Compare suitable systems, complete cost, installation demands, appearance, and maintenance.
Can I put shingles on a very low-slope shed roof?
Only within the selected product’s permitted slope range and installation requirements. Below that range, choose a suitable alternative system.
Can I use metal panels without plywood underneath?
Some systems permit installation over specified supports, while others require a continuous deck. Follow the exact product and building design.
Is roll roofing suitable for a flat shed roof?
Do not assume so. Some mineral-surfaced roll products require a pitched roof. Confirm the chosen system’s requirements.
Can I install a new roof over the old covering?
Only where the design, substrate condition, product instructions, and applicable requirements permit it. Covering an existing problem does not resolve it.
Can I change the material shown in my shed plans?
Have the substitution reviewed for weight, support, slope, fastening, and weatherproofing compatibility before purchasing.
Choose the Whole Roof System
The right shed roofing material fits the roof you are building and the installation you can arrange.
Start with slope and support requirements. Compare complete systems, calculate effective coverage, and resolve edge details before ordering.
Visit Beginner Shed Guide for more help planning the project.
Ready to review a shed design and its roof requirements? Explore My Shed Plans, check the available samples, and confirm the specified covering before construction.
Resources
- GAF: Minimum Slope for Shingles — Product-related slope and installation considerations.
- GAF: Mineral Guard Roll Roofing — A specific roll-roofing product and its intended applications.
- MBCI: PBR Panels and Slimline Panels — Examples of different metal-panel slope requirements.
- Carlisle: EPDM Roofing — Membrane systems and supporting technical information.
- Onduline: ONDURA Installation Guide — Product-specific corrugated-panel guidance.
Affiliate disclosure: We may earn a commission from purchases made through affiliate links on this page, at no additional cost to you.
Building disclaimer: This article provides general product-selection information, not a complete roofing specification. Product examples are illustrative and requirements may change. Follow the current instructions for the exact roofing system, the selected shed design, and applicable requirements. Arrange qualified assistance for unfamiliar roofing or elevated work.