Anti Ponding Board 50m x 250mm

Anti ponding board is a rigid board fixed at the eaves of a roof to lift the sarking or underlay so water runs off into the gutter instead of ponding in a dip behind the fascia. This roll is 50 metres long and 250mm wide, which is the size used to run continuous support along the eave line. It is a standard part of keeping a metal or tiled roof draining properly at the edge.

Key Features

• Rigid board that supports the sarking at the eave line
• 50 metre roll in a 250mm width for continuous runs
• Lifts the underlay so water discharges to the gutter
• Prevents water ponding behind the fascia
• Suits metal and tile roof installations
• Cut to length on site with normal tools

Specifications

• Product: anti ponding board
• Length: 50 metres per roll
• Width: 250mm
• Application: eave line, over the fascia or tiling batten
• Function: rigid sarking support to prevent water ponding
• Material: confirm with supplier for the exact board spec

Why Anti Ponding Board Is Used

At the eave, the fascia can sit slightly higher than the roof deck, which creates a low point where water pools on the sarking before it reaches the gutter. Anti ponding board fills that gap and raises the underlay to a gentle slope, so water keeps moving toward the gutter instead of sitting against the roof structure. It is a simple fix that prevents a common source of roof edge leaks.

Applications

• Eave support on metal and tiled roofs
• Lifting the underlay to discharge water to the gutter
• New roof installations and re-roofing
• Repairing a roof edge that is ponding water

What You Need To Complete The Job

Pair the anti ponding board with the rest of the roof edge system. Fix it in place with galvanised clouts, seal the joints with reinforced foil tape, and use sarking as the underlay. Browse the Roof Fixing Supplies range for more.

Frequently Asked Questions

What is anti ponding board used for?

It is fixed at the eaves to raise the sarking or underlay so water runs off into the gutter instead of ponding in a dip behind the fascia. It is a rigid support that keeps the eave line draining properly.

How much do I need?

Measure the length of the eave line you need to support and order the 50m roll to cover it. The 250mm width is the standard size for running along the eave.

Does it suit metal and tiled roofs?

Yes. It is used on both metal and tile roof installations wherever the underlay needs lifting at the eave to prevent ponding. The installation detail varies slightly with the roof type.

Can I cut it to length?

Yes. The board cuts to length on site with normal hand tools. Cut each piece to fit the run and fix it in place along the eave.

Can I order for delivery or pickup?

Yes. You can order online and choose Australia-wide delivery or pickup from our Truganina trade counter in Melbourne’s west. Delivery windows depend on your postcode, and we send a confirmation once your order is ready. For any questions call (03) 93941400 or email orders@singhroofingsupplies.com.au.