Can Ivy Damage Brickwork?

Misconception

• Ivy cannot damage solid brick or stone. An opening such as a fracture or gap must exist for the tendrils of the ivy plant to work themselves in. Ivy tendrils work like tree roots in that they are not strong enough to break through solid surfaces but are strong enough to work behind a surface and push it out of position. Another misconception is that the ivy alone causes damage to brick and mortar. As openings develop, moisture builds up within the mortar. The moisture can cause the mortar to soften or erode. When the mortar erodes, it creates more cavities, which in turn create more spaces for the tendrils to move in.

Existing Damage

• The tendrils from ivy vines seek out gaps and cracks to help them grab onto structures. If a structure has existing damage, the tendrils use it to gain a better hold. The tendrils are what the ivy uses to support itself. If brickwork or stone is already loose, the tendrils work themselves into, under and around the brick through the masonry. As the tendrils expand and extend, they push the loose brick or masonry out of the space they take up. This is what causes further damage to weaken the structure. As the tendrils work further into the masonry, they widen gaps already exposed to them.

Hidden Problems

• Several problems can occur that are not directly caused by ivy but can lead to damage. As brickwork and mortar are covered by the ivy they become hidden. The hidden surface becomes suitable habitat for termites and other insects. Should the brickwork surround wooden framework such as doors or windows, the ivy can work between the wood and brick, causing damage as it works itself behind the frame.

Control

• Contain ivy to solid brickwork and mortar by regularly trimming it to maintained areas. Trim back several feet as ivy in general grows quickly, covering several feet in a short time. If you notice cracks or fractures forming, remove the ivy from the area to prevent further damage. Cut the section of ivy near the damage and wash the brickwork with soapy water. Remove the tendrils with a wire brush. Keep all species of ivy away from windows and doorframes. Avoid using invasive species such as English ivy that can grow quickly and soon cause problems. If you are worried about ivy on brickwork, consider using alternative vines such as climbing roses, Morning Glory or Oakleaf hydrangea.