Flat Pan Roof Gutter Guard: Professional Protection for Low-Pitch Profiles

Flat-pan metal roofs require a gutter guard system designed around their wide roof pans and raised ribs. A generic corrugated-roof kit may use the wrong fixing components, while loosely fitted mesh can move, sag or leave gaps around the roof edge.

For supported flat-based metal roof profiles, Leaf Stopper uses the DEKGUARD™ system. DEKGUARD™ secures Mesh Shield to the flat roof pans with profile-specific Gripit brackets and connects the other side to the external gutter edge.

This guide explains how to choose a flat pan roof gutter guard, identify your metal roof profile, select the right DEKGUARD™ configuration and compare Standard, Premium and Fine Mesh for debris, durability and bushfire requirements.

What Is a Flat-Pan Metal Roof?

A flat-pan metal roof profile has raised ribs separated by broad, relatively flat sections known as pans. Rainwater travels through these pans toward the gutter.

Flat-pan profiles are commonly used on:

• Residential homes
• Patios and verandahs
• Extensions
• Carports
• Commercial buildings
• Warehouses and industrial facilities

The phrase “flat-pan roof” describes the shape of the roof sheet. It does not necessarily mean the entire roof is installed flat or without pitch.

Common Flat-Pan Profile Characteristics

Individual products vary, but common features include:

• Broad drainage pans
• Raised square, trapezoidal or angular ribs
• Profile-specific rib spacing
• Different sheet cover widths
• Different rib heights
• Concealed or exposed roof-sheet fastening systems

These differences matter because the gutter guard fixing layout needs to suit the supported areas of the roof sheet.

Not Every Square-Ribbed Roof Is Trimdek®

Trimdek® is one widely recognised flat-pan profile, but several manufacturers produce roofs with similar-looking ribs and pans.

Using “Trimdek” as a general term for every square-ribbed roof can result in the wrong gutter guard being ordered. The roof may instead be a Klip-Lok, Metlok, Speed Deck, Monoclad or another manufacturer-specific profile.

For information focused specifically on Trimdek®, read our Trimdek gutter guard buying guide.

Why Flat-Pan Roofs Need a Profile-Specific Gutter Guard

Traditional curved corrugated roofing and flat-pan metal roofing have different shapes and supported fixing locations. A component designed to sit on rounded corrugations will not necessarily suit a broad roof pan or angular rib.

A purpose-designed flat pan roof gutter guard should account for:

• The width of the roof pans
• The position of the ribs
• Suitable roof fixing locations
• The distance between fixing points
• The gutter-edge configuration
• The mesh span between the roof and gutter

Problems with Generic Mesh

A generic or incorrectly selected system may:

• Leave unsupported sections of mesh
• Sag into the flat roof pans
• Move during strong wind
• Leave openings around the roof edge
• Create low areas where debris can collect
• Use unsuitable roof fasteners
• Make future gutter inspection difficult

A roll of mesh being wide enough to reach the gutter does not automatically make it compatible with the roof.

Why Insert-Style Products Are Different

Foam, brushes and similar products sit inside the gutter. They do not cover the transition between the roof surface and gutter edge.

Because these products occupy part of the gutter channel, leaves, sediment and organic material can collect within or around them. They may also need to be removed before the gutter can be inspected properly.

DEKGUARD™ uses an over-the-gutter approach that helps reduce larger debris entering the gutter channel in the first place.

How DEKGUARD™ Works

DEKGUARD™ is the Leaf Stopper gutter guard system for supported flat-based metal roof profiles.

Mesh Shield extends from the lower roof area to the external gutter edge, creating a barrier above the gutter channel.

Gripits on the Flat Roof Pans

DEKGUARD™ uses Gripit brackets secured to supported flat pans on compatible roof profiles.

Gripits provide dedicated roof-side fixing points for the Mesh Shield. The number of Gripits required per metre depends on the manufacturer and roof profile.

This means there is no single universal DEKGUARD™ fixing layout for every flat-pan roof.

Trimets at the External Gutter Edge

For compatible external gutters, Trimets secure the Mesh Shield to the outer gutter edge.

The finished system should form a supported transition between the roof and gutter without excessively loose or unsupported mesh sections.

How Mesh Helps Reduce Debris Entry

The Mesh Shield helps keep leaves, twigs and larger debris above the gutter channel.

A correctly positioned sloping mesh surface can expose dry debris to wind and weather, which may help some material move away naturally.

However, no gutter guard can guarantee that every leaf will blow away. Wet leaves, branches and matted organic debris may still require periodic removal.

Water Entry and Drainage

Rainwater passes through the mesh into the gutter below. Actual performance depends on several factors, including:

• Roof pitch
• Rainfall intensity
• Mesh type
• Gutter condition and capacity
• Downpipe and outlet condition
• Surface debris on the mesh
• Installation angle and positioning

Gutter guard should not be used to correct an undersized gutter, unsuitable downpipe arrangement, incorrect roof fall or existing drainage problem.

For technical background on low-slope drainage considerations, see the IIBEC guidance on roof drainage design.

DEKGUARD™ vs Other Leaf Stopper Systems

DEKGUARD™ is one of several profile-specific Leaf Stopper systems. Understanding the differences helps prevent the wrong kit being ordered.

DEKGUARD™

Designed for supported flat-based metal roof profiles.

• Uses Gripits on flat roof pans
• Uses Trimets on compatible external gutter edges
• Selected according to manufacturer and profile

DEK-762™

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

• Uses DEKAFast saddles at compatible roof ribs
• Does not use Gripits
• Uses Trimets at compatible external gutter edges

DEKGUARD™ and DEK-762™ are separate products despite their similar names.

CORROGUARD®

CORROGUARD® is designed for traditional curved corrugated metal roofs.

• Uses corrugated saddles on the high points of the corrugations
• Uses Trimets at the external gutter edge

TILEGUARD™

TILEGUARD™ is designed for concrete and terracotta tiled roofs.

• Mesh Shield is positioned beneath the appropriate row of tiles
• Trimets secure the mesh to the gutter edge

COMGUARD™

COMGUARD™ is designed for internal box gutters.

• Uses Clampers at the wall or vertical upstand
• Uses Gripits on the adjoining supported flat-based roof profile
• Available in 250mm, 500mm, 750mm and 1000mm Mesh Shield widths
• Does not use Trimets
• Has no separate valley option

Compatible Flat-Pan Roof Profiles

DEKGUARD™ is available for a range of supported metal roof profiles from major Australian manufacturers.

Examples may include selected profiles from Lysaght, Metroll and Stramit.

Lysaght Profiles

• Trimdek®
• Klip-Lok 406
• Klip-Lok Classic 700
• Klip-Lok 700 Hi-Strength
• Spandek
• Flatdek
• Flatdek II
• Longline 305
• Integrity 820
• Spanrib
• Permalite profiles

Metroll Profiles

• Metlok 700
• Metlock Cyclonic 680
• Hi-Deck 650
• Metrospan
• Spanplus 500
• Trimclad

Stramit Profiles

• Speed Deck 500
• Speed Deck Ultra
• CapacityPlus 660
• Megaclad
• Monoclad
• Longspan

This does not mean that one DEKGUARD™ kit fits every profile in the list. Each profile may require a different number or arrangement of Gripits.

Confirm the Profile Before Ordering

Useful sources for identifying the roof include:

• Original building plans
• Roof installation invoices
• Manufacturer documentation
• Markings on accessible roof sheets
• Measurements of the pans, ribs and cover width
• Assessment by a roofer or installer

Do not rely only on a roof looking similar to a product image.

Choosing Standard, Premium or Fine Mesh

Leaf Stopper provides three Mesh Shield options for different debris and property requirements.

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.

Standard Mesh may suit properties where broader leaf matter is the main concern and BAL-rated protection is not required.

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 option. Its primary difference is its increased aluminium thickness.

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
• Small leaf matter
• Narrow blossoms and organic debris

Fine Mesh is also the BAL-rated mesh option in the Leaf Stopper range.

Will Fine Mesh Exclude All Sediment?

No. Dust, pollen and microscopic sediment can still pass through mesh with rainwater or collect on its surface.

Finer mesh can reduce smaller physical debris, but it does not make the gutter maintenance-free.

Read our aluminium vs plastic gutter guard guide for a broader material comparison.

Bushfire and BAL Considerations

All three Leaf Stopper mesh options are made from non-combustible aluminium. However, non-combustible and BAL-rated do not mean the same thing.

• Standard Mesh: Non-combustible aluminium but not BAL-rated
• Premium Mesh: Non-combustible aluminium but not BAL-rated
• Fine Mesh: The BAL-rated option within the Leaf Stopper range

Fine Mesh Aperture

Fine Mesh has a 1.8mm x 1.8mm aperture.

Where mesh is being used as an ember guard or to protect openings, a maximum aperture of 2mm is commonly required. The exact requirements depend on the project, application, BAL assessment and approval pathway.

Confirm the Requirements for Your Property

Before ordering gutter guard for a bushfire-prone property, confirm the applicable requirements with an appropriate builder, certifier, bushfire consultant or local authority.

Visit the Leaf Stopper Bushfire Protection page and read the BAL 29 Gutter Guard Buying Guide for additional information.

Measuring for Flat-Pan Roof Gutter Guard

Ordering DEKGUARD™ requires more than measuring the total gutter length.

Before ordering, record:

• Total linear metres of gutter
• Roof manufacturer
• Exact roof profile name
• Number of separate gutter runs
• Internal and external corners
• Roof valley locations where applicable
• Downpipe locations
• Potential EasyAc positions
• Preferred Mesh Shield type
• Preferred colour
• Whether BAL-rated Fine Mesh is required

Measure Different Roof Profiles Separately

A property may have a flat-pan metal main roof and a traditional corrugated verandah or patio.

These areas should be measured and recorded separately because the main roof may require DEKGUARD™, while the corrugated section may require CORROGUARD®.

Allow for Cuts, Corners and Overlaps

Order some additional mesh for joins, corners, cutting and trimming.

Around 10% is a common planning allowance for DIY projects, but the appropriate amount depends on roof complexity and installer experience.

Take Clear Profile Photographs

Photographs should show:

• The broad roof pans
• The rib shape
• The gutter edge
• The lower roof-sheet area
• Corners and valleys
• Transitions between roof profiles

For the complete process, read How to Measure for Gutter Guards: A Practical Guide for Australian Roofs.

Installation Considerations

DEKGUARD™ should be installed according to the instructions for the selected manufacturer and roof profile.

The general system uses Gripits at supported flat roof pans and the appropriate components at the external gutter edge.

Prepare the Roof and Gutters

Before installation:

• Remove leaves and larger debris
• Clear existing gutter sediment
• Check downpipe openings
• Inspect the gutter for visible damage
• Check lower roof sheets for damage or corrosion
• Address known drainage or roof-leak problems

Do not install gutter guard over an unresolved gutter, roof or stormwater defect.

Use the Correct Gripit Configuration

Gripits are fixed to supported flat pans. They are not rib saddles and should not be installed as though they were DEKAFast or corrugated saddles.

The required Gripit spacing depends on the selected roof profile.

Avoid Unsupported Mesh

The Mesh Shield should form a supported transition between the roof and gutter edge.

Avoid:

• Loose mesh sagging into the roof pans
• Large unsupported spans
• Gaps at the ends of gutter runs
• Obstructing downpipes or overflow provisions
• Walking directly on Mesh Shield
• Using generic fasteners without confirming compatibility

DIY or Professional Installation?

DIY installation may be suitable for a confident property owner with a correctly identified, safely accessible roof.

Professional installation is generally more appropriate for:

• High or steep roofs
• Multi-storey properties
• Commercial and industrial roofs
• Complex roof transitions
• Long or difficult-to-access gutter runs
• Projects requiring certification
• Anyone without suitable height-safety equipment

Review the Leaf Stopper installation instructions before starting.

Maintenance and EasyAc Access

A flat-pan roof gutter guard can help reduce the amount of leaves and larger debris entering the gutter, but it cannot eliminate all maintenance.

Periodic checks may still be needed for:

• Branches resting on the mesh
• Wet or matted leaves
• Fine gutter sediment
• Loose components
• Storm or impact damage
• Downpipe restrictions
• Debris around roof corners and valleys

EasyAc Access Panels

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

EasyAc may be useful near:

• Downpipe outlets
• Long gutter runs
• Gutter corners
• Areas beneath heavy vegetation
• Locations where sediment is likely to collect

It can provide access to inspect the gutter channel, check the entrance to a downpipe or direct a garden hose into the gutter without removing a long section of mesh.

EasyAc cannot clear a blockage located further down a downpipe or inside an underground stormwater pipe.

Inspection Frequency

There is no single maintenance schedule suitable for every flat-pan roof.

Inspection frequency depends on:

• Nearby vegetation
• Seasonal leaf, seed and blossom drop
• Dust and coastal exposure
• Recent storms
• Roof pitch and layout
• Bushfire preparation requirements

Read our low maintenance gutter guard guide for realistic maintenance expectations.

Flat-Pan Roof Gutter Guard Buying Checklist

Before ordering DEKGUARD™, confirm:

• The roof has a supported flat-based metal profile.
• The manufacturer and profile name have been identified.
• The total gutter length has been measured.
• The correct DEKGUARD™ profile option has been selected.
• The appropriate Gripit quantity is included.
• The external gutter edge is compatible with the system.
• Corners, valleys and roof transitions have been recorded.
• Downpipe and EasyAc locations have been considered.
• Standard, Premium or Fine Mesh has been selected.
• BAL requirements have been confirmed where applicable.
• The preferred powder-coated colour has been selected.
• DIY or professional installation has been considered.

Choose the Right System for Your Flat-Pan Roof

A flat-pan metal roof requires more than a generic roll of gutter mesh. The system must suit the roof profile, use the correct Gripit configuration and provide a supported transition to the gutter edge.

DEKGUARD™ is available for a broad range of supported profiles from manufacturers including Lysaght, Metroll and Stramit.

Explore the DEKGUARD™ system, browse Leaf Stopper gutter guard kits or find a professional installer for a high, complex or difficult-to-access roof.

Frequently Asked Questions

What is a flat-pan roof?

A flat-pan roof is a metal roof profile with broad, relatively flat pans between raised ribs. The term refers to the sheet shape rather than meaning the entire roof has no pitch.

What gutter guard suits a flat-pan metal roof?

DEKGUARD™ is designed for supported flat-based metal roof profiles. The exact product depends on the roof manufacturer and profile.

Does DEKGUARD™ attach to the roof ribs?

No. DEKGUARD™ uses Gripits secured to supported flat roof pans. It should not be confused with systems that use saddles on roof ribs.

What is the difference between DEKGUARD™ and DEK-762™?

DEKGUARD™ uses Gripits on supported flat roof pans. DEK-762™ uses profile-specific DEKAFast saddles on compatible DEK-762-style roof ribs.

Can DEKGUARD™ be used on Trimdek®?

Trimdek® is generally a DEKGUARD™ application. Confirm the manufacturer and exact profile before ordering.

Can DEKGUARD™ be used on Klip-Lok®?

Selected Klip-Lok® profiles are supported within the DEKGUARD™ range. The exact Klip-Lok® product must be identified because profiles and fixing requirements differ.

How do I identify my metal roof profile?

Check building plans, invoices, manufacturer documents and roof-sheet markings. Detailed measurements, photographs or professional assessment may also be used.

Which mesh is best for pine needles?

Fine Mesh may be preferable where pine needles, fine seeds and narrow debris are common. It has a 1.8mm x 1.8mm woven aperture.

Is Premium Mesh finer than Standard Mesh?

No. Both use a 3.5mm x 3.5mm aperture. Premium Mesh is thicker, using 0.80mm aluminium compared with 0.55mm Standard Mesh.

Which Leaf Stopper mesh is BAL-rated?

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

Will DEKGUARD™ stop every gutter blockage?

No. It helps reduce leaves and larger debris entering the gutter, but fine sediment and downstream drainage restrictions can still occur.

Will gutter guard stop water overshooting?

No gutter guard can guarantee this. Water behaviour depends on rainfall intensity, roof pitch, mesh condition, gutter capacity, drainage design and installation.

Can DEKGUARD™ stop birds and vermin?

A correctly installed mesh system can help reduce access around the protected gutter and roof edge, but no gutter guard can guarantee complete pest exclusion throughout the building.

Can EasyAc be installed with DEKGUARD™?

Yes. EasyAc can provide a removable inspection point near downpipes and other important gutter locations.

Can I install DEKGUARD™ myself?

DIY installation may be possible on a compatible and safely accessible roof. Professional installation is recommended for high, steep, complex, commercial or difficult-to-access properties.