Lichen, Moss and Mould: Are They Bad For My Roof?

Your roof is your first line of defence when it comes to protecting you from the elements. That being said, regular roof cleaning and maintenance is crucial to keep it performing at its best

There is not a single roof that is fully immune to the growth of moss and mould, no matter the type of roofing material you have. Lichen, moss and mould growth is more than an unsightly build-up that detracts from your property’s appeal, but, if left untreated, can quickly cause damage that is costly and time consuming to repair.

To keep your roof from premature repair and replacement here is why lichen, moss and mould grow should be regularly cleaned and removed.

How Does It Grow?

Moss, mould and lichen grow in warm, damp conditions. From heavy rains, one day to blazing hot the next, Australian roofs makes for the perfect environment where these plants can thrive.

While roofs protect you from the rain, they still retain moisture. This is caused by a variety of factors including, neglected gutters, a build-up of leaves and debris and poor drainage. If left unchecked, this combination of dust, trapped moisture and ample sunlight quickly encourages the growth of moss, mould and lichens.

How Does This Hurt My Roof?

The damage caused by moss and bacteria growth is more than just unappealing, trapped moisture, rapid growth and various health hazards are all detrimental to your roof.

Moisture Build Up

Trapped moisture can cause detrimental amounts of rot and damage. Due to their thick growth, lichen, moss and mould build-up prevents water from properly running into the gutters, further trapping moisture and allowing it to pool and eat away at the roof. This damage can cause holes, thinning spots and leaks.

Warping and Cracking

With the right conditions, moss, lichen and mould can spread quickly and grow steadily. If left untreated, it can push under tiles and shingles, causing them to warp, shift and crack. Large areas of growth can be surprisingly heavy, especially when trapping water. This puts unnecessary weight and strain on an already weakened roof.

Health Hazards

As mould, lichen and moss grow on your roof, there is a risk of leaks inside the home, which quickly becomes a breeding ground for further mould growth. Mould and bacteria growth is especially dangerous when airborne, and can cause a range of health issues and allergic reactions.

Removing Lichen, Moss and Mould From Your Roof

Deciding to clean your roof and remove the build-up of moss, mould and lichen can seem like a hefty decision. With the danger of a compromised roof and the risks of slipping, it is best to leave your roof cleaning to the professionals. 

Water Attack Pressure Washing is a full service company that offers a comprehensive range of pressure washing and roof cleaning services to homes and businesses across the Sunshine Coast. With years of experience, the technicians at Water Attack are able to determine the best cleaning solution for you, that is safe, reliable and affordable.

Quickly and efficiently restore your roof with Water Attack Pressure Washing. Get your free estimate today.

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