How to Measure for Gutter Guards: A Practical Guide for Australian Roofs

Ordering gutter guard is much easier when you know what to measure before you start. The most common mistake is focusing only on the total gutter length and forgetting the roof profile, gutter type, valleys, corners, downpipes and maintenance access points.

Learning how to measure for gutter guards helps you choose the correct Leaf Stopper system, avoid running short on mesh and ensure the finished installation suits your roof and gutter configuration.

This guide explains how to measure gutter length, identify your roof profile, plan for EasyAc access panels and choose the right product family for corrugated roofs, tiled roofs, DEK-762 profiles, DEKGUARD profiles and internal box gutters.

Before You Measure: Safety First

Measuring for gutter guards often involves working near roof edges, ladders and uneven ground. If you are not confident working at height, do not climb onto the roof or lean out from a ladder to take measurements.

Instead, use building plans where available, measure safely from accessible areas, take clear photos from the ground, or arrange help from a professional installer.

You can find a Leaf Stopper installer if the roof is high, steep, multi-storey or difficult to access.

Useful Measuring Tools

Before starting, gather:

• A tape measure suitable for longer gutter runs
• A notepad or printed roof sketch
• A pencil or marker
• A smartphone for photos
• Safe ladder equipment if access is required
• A second person to assist where appropriate
• Existing building plans, if available

Photos are especially useful when you are unsure about the roof profile, gutter shape, downpipe location or whether a section requires a different Leaf Stopper system.

Do Not Guess From the Ground

Ground-level estimates can be useful for a rough starting point, but they often miss short returns, verandah sections, internal corners and small roof additions.

For ordering purposes, measure each gutter run separately where it is safe to do so, or use accurate plans and photographs to confirm the layout.

Create a Roof Map

A roof map is a simple sketch of the gutter lines around your property. It does not need to be architectural quality. It only needs to show each gutter run, roof section and important feature clearly enough for ordering.

On your roof map, mark:

• Each separate gutter run
• External corners
• Internal corners
• Downpipes
• Roof valleys
• Gables or returns
• Box gutters, if present
• Different roof materials or profiles
• Areas with heavy overhanging trees
• Potential EasyAc access panel locations

Label each run with a simple name such as “front gutter”, “left side”, “rear patio”, “garage” or “box gutter 1”. This makes it easier to check your final order before purchasing.

Separate Different Roof Types

If the home has more than one roof type, measure and label each area separately.

For example, a property may have:

• A tiled main roof
• A corrugated metal verandah
• A flat-based metal roof extension
• An internal box gutter on a commercial section

Each of these may require a different Leaf Stopper system.

Measure Your Total Gutter Length

The main measurement you need is the total linear metres of gutter to be protected.

Measure each run from one end to the other, following the gutter line rather than estimating the roof size. Record each run separately before adding them together.

Example Linear Metre Calculation

If your roof map shows the following:

• Front gutter: 14.2m
• Rear gutter: 13.8m
• Left side gutter: 8.5m
• Right side gutter: 8.5m
• Garage gutter: 6.4m

The total measured length is:

14.2 + 13.8 + 8.5 + 8.5 + 6.4 = 51.4 linear metres

This is your starting point before allowing for overlaps, cuts and trimming.

Measure in Metres, Record Clearly

Record measurements in metres or millimetres consistently. Avoid mixing rough numbers such as “about 8m” with precise measurements in the same tally.

If one section is difficult to measure accurately, mark it clearly on your roof map and take photos so it can be checked before ordering.

Allow for Corners, Overlaps and Cuts

Most gutter guard installations require some extra mesh beyond the exact measured length. Corners, joins, overlaps, mitres and trimming can all use additional material.

A practical allowance is often added to the measured linear metres, especially for DIY installations. Around 10% extra is a common planning allowance, but the right amount depends on the roof complexity, number of corners and installer experience.

When You May Need More Allowance

Allow more material when the roof includes:

• Many short gutter runs
• Multiple corners
• Complex verandah or patio returns
• Valley sections
• Several roof profiles
• Box gutters
• Unusual roof shapes
• A DIY installer who wants extra margin for cutting errors

When You May Need Less Allowance

A straightforward roof with long, simple runs and few corners may need less waste allowance, especially when installed by an experienced professional.

The important point is not to order exactly the measured length with no margin. Running short by one or two metres can delay the installation and may result in extra freight or a return trip.

Identify Your Roof Profile

Knowing how to measure for gutter guards also means knowing which roof profile you are measuring for.

The roof profile determines the correct Leaf Stopper system, fixing components and mesh layout. Do not choose a kit based only on the total linear metres.

Common Roof Types

Australian properties commonly include:

• Traditional curved corrugated metal roofing
• Concrete or terracotta tiled roofing
• Compatible DEK-762-style metal roof profiles
• Supported flat-based metal roof profiles such as Klip-Lok, Trimdek or similar profiles
• Internal box gutters on commercial, industrial or modern residential buildings

If you are unsure of the profile, take clear photos of the roof sheets from above and from the gutter edge, then compare them with the available Leaf Stopper systems.

The installation instructions page can help you understand the different product families before ordering.

Measuring for Each Leaf Stopper System

Leaf Stopper uses different systems for different roof and gutter configurations. The measuring process should therefore identify both the total length and the correct product family.

CORROGUARD® for Corrugated Metal Roofs

CORROGUARD® is designed for traditional curved corrugated metal roofs.

Measure the total linear metres of external gutter attached to the corrugated roof section. Also take photos showing the corrugation shape, gutter edge and any corners or valleys.

CORROGUARD® uses corrugated saddles to secure Mesh Shield to the high points of the roof corrugations, while Trimets secure the mesh to the outer gutter edge.

When preparing your order, check:

• Total gutter length on corrugated sections
• Number of separate runs
• External and internal corners
• Valley areas, if applicable
• Downpipe and EasyAc access locations
• Mesh colour
• Whether Standard, Premium or Fine Mesh is required

TILEGUARD™ for Tiled Roofs

TILEGUARD™ is designed for concrete and terracotta tiled roofs.

Measure the total gutter length along tiled roof sections. Take photos showing the tile shape, gutter edge and how the tile sits near the gutter.

The Mesh Shield is positioned beneath the appropriate row of tiles and secured to the gutter edge using Trimets. Some high-profile tiles may require carefully placed expansion cuts so the mesh follows the tile profile correctly.

When measuring a tiled roof, note:

• Tile type and profile
• Total gutter length
• Valley areas
• Corner locations
• Downpipe locations
• Any cracked, loose or fragile tiles near the gutter edge
• Whether professional installation is safer

Do not force tiles or drill into them without understanding the installation method. If tiles are fragile, steep or difficult to access, use an installer.

DEK-762™ for Compatible DEK-762-Style Profiles

DEK-762™ is designed for compatible DEK-762-style metal roof profiles.

Measure the total gutter length for sections using that profile and take photos showing the roof ribs and gutter edge.

DEK-762™ uses profile-specific DEKAFast saddles to secure Mesh Shield to the roof ribs. It is not the same system as DEKGUARD™ and does not use Gripits.

When measuring for DEK-762™, confirm:

• Total gutter length
• Roof profile compatibility
• Corner and return locations
• Downpipe locations
• Whether EasyAc access is required
• Mesh colour and mesh type

DEKGUARD™ for Supported Flat-Based Metal Roof Profiles

DEKGUARD™ is designed for supported flat-based metal roof profiles.

These roof profiles require more than a simple length measurement. You need to identify the manufacturer and profile name so the correct DEKGUARD™ product and Gripit quantity can be selected.

DEKGUARD™ uses Gripit brackets to secure Mesh Shield to the flat pans of the roof. Different profiles may require different Gripit spacing.

When measuring for DEKGUARD™, record:

• Total gutter length
• Roof manufacturer, if known
• Roof profile name, if known
• Photos of the roof pans and ribs
• Corner and return locations
• Downpipe locations
• Mesh type and colour

If you are not sure whether a roof is DEK-762™ or DEKGUARD™, do not guess. Take photos and confirm the profile before ordering.

COMGUARD™ for Internal Box Gutters

COMGUARD™ is designed for internal box gutters.

COMGUARD™ is measured differently from standard external gutter systems. You need both the length of the box-gutter run and the required Mesh Shield width.

COMGUARD™ is available in four Mesh Shield widths:

• 250mm
• 500mm
• 750mm
• 1000mm

The width is not just the bottom of the gutter channel. Measure the required span from the wall, parapet or vertical upstand fixing point across to the adjoining roof fixing point.

COMGUARD™ uses Clampers to secure the mesh to the wall or vertical upstand and Gripits to secure the opposite side to the adjoining supported flat-based roof profile.

COMGUARD™ does not use Trimets and has no separate valley option.

When measuring for COMGUARD™, record:

• Total box-gutter length
• Required mesh width: 250mm, 500mm, 750mm or 1000mm
• Wall or vertical upstand location
• Adjoining roof profile
• Sump and downpipe locations
• Overflow locations
• Possible EasyAc access panel locations
• Mesh type and colour

For more detail, read our guide on industrial gutter guard solutions.

Planning EasyAc Access Panels

The EasyAc gutter access panel provides a removable inspection point within a Leaf Stopper Mesh Shield installation.

It can make future inspection and flushing easier without removing a long section of mesh.

Where EasyAc May Be Useful

Consider EasyAc near:

• Downpipe outlets
• Box-gutter sumps
• Long gutter runs
• Gutter corners
• Areas below heavy vegetation
• Locations where fine sediment is likely to collect
• Sections that would be difficult to inspect after installation

You do not necessarily need an EasyAc panel at every downpipe on every property. The right number depends on the gutter layout, debris load and how future maintenance will be performed.

Mark Access Points on Your Roof Map

Mark proposed EasyAc positions before ordering. This helps ensure access panels are planned into the system rather than treated as an afterthought.

EasyAc is an access panel, not a replacement for gutter guard and not a standalone drainage solution. It also cannot clear a blockage further down a downpipe or underground stormwater pipe.

For maintenance planning, read Low Maintenance Gutter Guards: Your FAQ Guide to Reducing Gutter Cleaning.

Choosing the Right Mesh

After measuring the length and identifying the roof system, choose the mesh type.

Standard Mesh

Standard Mesh has a 3.5mm x 3.5mm aperture and is manufactured from 0.55mm aluminium.

It is designed for general leaves, twigs and larger debris.

Premium Mesh

Premium Mesh uses the same 3.5mm x 3.5mm aperture as Standard Mesh but is manufactured from 0.80mm aluminium.

It is approximately 46% thicker than Standard Mesh and may be selected where increased mesh strength and durability are preferred.

Premium Mesh is not a finer-aperture product.

Fine Mesh

Fine Mesh has a 1.8mm x 1.8mm woven aperture and is manufactured from 0.40mm aluminium.

It is designed to help reduce smaller debris such as pine needles, fine seeds and small leaf matter entering the gutter.

Fine Mesh is the BAL-rated mesh option in the Leaf Stopper range. Standard and Premium Mesh are non-combustible aluminium but are not BAL-rated.

If the property is in a bushfire-prone area, review the Leaf Stopper bushfire protection page and confirm whether Fine Mesh is required.

For BAL 29 applications, see the BAL 29 gutter guard buying guide.

Choosing Your Colour

Once the system and mesh type are selected, choose the colour.

For most homes, the goal is to make the gutter guard blend into the roofline. Depending on the roof and gutter arrangement, this may mean matching the mesh to the gutter, fascia or roof sheet.

When choosing colour, consider:

• Which surface the mesh is most visible against
• The roof colour
• The gutter colour
• The fascia colour
• Visibility from the street
• Whether darker or lighter mesh will be less noticeable

For more on colour-matched finishes, read The Homeowner’s Guide to Powder Coated Gutter Guards in Australia.

Final Ordering Checklist

Before placing an order, check your roof map against the following list.

• Total linear metres of each gutter run
• Extra allowance for overlaps, corners and cuts
• Roof profile for each section
• Correct Leaf Stopper system for each profile
• COMGUARD™ width, if internal box gutters are present
• Valley areas, if applicable
• Downpipe locations
• Proposed EasyAc access panel locations
• Mesh type: Standard, Premium or Fine
• Colour selection
• Whether bushfire requirements apply
• Whether professional installation is required

Example Order Planning Scenario

Assume your roof map shows:

• Corrugated roof gutter runs: 32m
• Tiled patio section: 8m
• One long gutter run with a downpipe at each end
• Two external corners
• Heavy gum-tree debris nearby

You may need to consider:

• CORROGUARD® for the corrugated section
• TILEGUARD™ for the tiled patio section
• An allowance for corners and trimming
• Fine Mesh if smaller debris or bushfire requirements apply
• EasyAc access near key downpipe or inspection locations
• Separate colour choices if the patio roof and main roof differ

This is why measuring only the outside perimeter is not enough. The product system, mesh type and access layout all influence the final order.

Measure Carefully, Order Confidently

Learning how to measure for gutter guards comes down to three steps: calculate the linear metres, identify the roof profile and plan the details that affect installation.

A simple roof map, clear measurements and accurate photos can help you avoid ordering the wrong kit or running short during installation.

Leaf Stopper provides roof-specific aluminium gutter guard systems for corrugated roofs, tiled roofs, compatible DEK-762 profiles, supported flat-based metal roof profiles and internal box gutters.

Browse Leaf Stopper gutter guard kits, review the installation instructions or find a professional installer if you need help measuring or installing on a complex roof.

Frequently Asked Questions

How do I measure for gutter guards?

Measure the total linear metres of each gutter run, identify the roof profile, note corners and valleys, mark downpipe locations and allow extra material for overlaps and cuts.

Should I measure the roof or the gutter?

Start by measuring the gutter length because this determines the linear metres required. You also need to identify the roof profile because that determines the correct Leaf Stopper system and components.

Can I measure gutters from the ground?

Ground measurements can provide a rough estimate, but they may miss returns, corners, profile details and obstructions. Use accurate plans, safe physical measurements or a professional assessment for ordering.

How much extra gutter guard should I order?

Around 10% extra is a common planning allowance for DIY installations, but the right amount depends on the number of corners, cuts, overlaps and roof complexity.

Do I need different measurements for different roof profiles?

Yes. Corrugated, tiled, DEK-762, DEKGUARD and COMGUARD applications should be measured and recorded separately because they use different systems and components.

How do I measure for CORROGUARD®?

Measure the total gutter length along the corrugated roof section and record corners, valleys, downpipes and possible EasyAc locations. CORROGUARD® uses corrugated saddles and Trimets.

How do I measure for TILEGUARD™?

Measure the gutter length along tiled roof sections and take photos showing the tile shape and gutter edge. TILEGUARD™ uses Mesh Shield positioned beneath the appropriate row of tiles and secured to the gutter edge with Trimets.

How do I measure for DEK-762™?

Measure the gutter length and confirm the roof is a compatible DEK-762-style profile. DEK-762™ uses DEKAFast saddles and does not use Gripits.

How do I measure for DEKGUARD™?

Measure the gutter length and identify the roof manufacturer and profile name. DEKGUARD™ uses Gripit brackets on supported flat-based metal roof profiles.

How do I measure for COMGUARD™?

Measure both the box-gutter length and the required Mesh Shield width. COMGUARD™ is available in 250mm, 500mm, 750mm and 1000mm widths and uses Clampers and Gripits.

Do I need EasyAc access panels?

EasyAc is optional but useful near downpipes, sumps, corners, long gutter runs and areas where sediment may collect. It makes inspection and flushing easier without removing a long section of mesh.

Which mesh should I choose?

Standard Mesh suits general leaf and larger debris protection. Premium Mesh is thicker than Standard Mesh. Fine Mesh has a smaller aperture and is the BAL-rated option in the Leaf Stopper range.

Can I install gutter guards myself after measuring?

DIY installation may be suitable on supported roof profiles where safe access is available. Use a professional installer for high, steep, complex, commercial or difficult roofs.