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If you have a gable or apex roof, the type that looks somewhat like a triangle, you’ve likely got a verge. It’s typically the edge of your roof without any guttering. 

On older properties, roofers used cement, sand and water to close the verge to prevent water ingress and unwelcomed birds and insects having a pleasant time nesting in the roof. This technique is known as a wet verge. It’s highly effective until mother nature erodes the mortar, and repeated vibration from nearby traffic creates roof movement. At this point, cracks turn into gaps that are not only aesthetically displeasing but an invitation for birds and insects to nest in the safe place of a roof.

On the flip side, a dry verge does not contain cement, sand and water. Instead, they’re typically manufactured from a robust uPVC material, which offers a variety of benefits to homeowners and landlords. 

The verge is often the most vulnerable part of a roof

A verge can be the most vulnerable part of a roof, depending on the most common direction of wind and rain. Properties with the apex facing the wind and rain direction suffer from the fastest mortar erosion, more so than any other part of the roof. With a dry verge system, the verge is protected regardless of its position on the roof. 

A dry verge does not include mortar

Unlike a wet verge, dry verges clip to the roof tiles instead of stuck to with mortar. It can face various weather conditions in the UK without deteriorating and becoming ineffective at protecting your roof from nesting.

Less likely to fly off like ridge tiles and mortar

The idea of a clip sounds less secure, but it’s actually less likely to fly off the roof during storms if installed correctly. This makes dry verges systems safer than traditional wet verges that fly off and damage the walls, cars and people. It’s one of the main reasons it has become a legal requirement.

Due to its increased safety, any new builds must have a dry verge system installed. On older properties, wet verges can be used for repair, but it’s recommended that dry verges are installed. 

Allows for movement of the roof

Yes, you read that right. Roofs move with intense vibration from road traffic usually. Verges with mortar crack, but robust uPVC flexes with the roof. 

Discrete roof ventilation

There are usually sufficient airways to ventilate the roof sufficiently to prevent trapping moisture leading to a damp environment. Still, the gaps are smaller enough to trap birds and insects entering.

Greater durability and longevity

The materials used within the dry verge system make it more durable to weather conditions and roof movements. It also lasts longer with no maintenance required, unlike wet verges.