Ivy lends any home touch of old English charm, but while this creeping vine may look distinguished, its invasive root structure can cause serious damage to materials not strong or solid enough to handle the intrusion.
A recent Oxford University three-year study concluded that ivy’s leafy web actually acts as a “thermal shield” that insulates the brick from extreme temperatures and moisture which are more often associated with causing cracks and fissures in weak masonry finishes. Their study also found that ivy can help protect brick work against damage from pollution.
But while an ivy covered facade may be the aesthetic you’re hoping to achieve, the vine is not right for every house. Ivy tendrils push their way into soft mortar and cracks, shifting loose bricks and allowing moisture to penetrate. The list of surfaces not suited for ivy growth is relatively extensive:
– Weakened Brick
– Dry-Stacked Walls
– Wooden Walls & Fences
– Siding
– Stucco
– Painted Surfaces
– Unsound Structures
Though it may enhance the character of an older brick home, ivy is a definite no no. Homes built in the early 1900s are particularly at risk, since the mortar used was often lime-based and softer than modern, cement-based mortar.
If you do plan on cultivating an ivory covered wall, make sure you grow it on a well-built and solid masonry wall that doesn’t have cracks of loose bricks. Try to avoid the more invasive species, such as English ivy – which is so invasive that it has been banned in some communities. Less invasive species, like Boston ivy or alternatives like climbing roses, won’t threaten neighboring trees, woods, or houses. Protect your wood trim, gutters and windows from ivy tendrils by pruning it back and removing any invading stems. And do your best to keep ivy growth contained, as tendrils take hold and can leave a hard to remove residue behind.
Ivy doesn’t have to be a bother, with a little care and a lot of patience, this oft maligned vine can give your home the touch of class it might be missing.
