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04 803 34 79

Roof moss


Information about Roof Moss

 Crown Roof Moss Removal

Call 04 803 34 79


Does roof moss damage a roof?

Roof moss and lichen will attach firmly to the roof substrate. On metal roofing this will eventually blister the paint or remove the coating. The unprotected metal will rust in Wellingtons marine enviroment. On concrete tile roofing the moss destroys the mortar that holds the ridge tiles on. It also occasionally causes pitting and cracks in the tiles. Roof moss finds its way into drainage channels on interlocking tiles causing roof leaks. Removing roof moss and lichen will extend the life of your roof and save you a considerable amount of money. A good treatment applied every three to five years will keep your roof safe.Call for a free quote or for an online estimate click here..


Roof mold on a building.

 The Roof mold above shows up as black stains running down the roof surface. It looks unsightly but it will not cause any damage to the roofing materials.

A metal roof tile damaged by roof moss.

Roof Moss on Metal Roofing. 

The roof moss and Lichen above has already started to damage this Metal tile. The moss and Lichen attaches itself to the roof coating causing it to lose its bond with the metal. This will seriously damage the tile. Metal roofing should be treated every 3-5 years to prevent moss and lichen growth.      

 Roof moss damage to a metal roof flashing.

Roof moss on concrete tile roofing.

Roof moss has damaged this concrete tile roof. The moss has destroyed the pointing and has started to pit the roof tiles. This roof will need to be re-pointed and some of the tiles will need replacing. A good moss treatment every three to five years will prevent this damage and extend the life of your roof. Call now or get an online estimate here.        

Removing Roof Moss

To remove roof moss and lichen the growth must be killed off first. If it is removed with a brush or waterblaster, the roof surface may further be damaged. Lichen is a symbiotic growth of fungus and bacteria. As part of its life cycle the cortex (root) embeds itself in the sub structure of the roof. This is what causes the damage. If you try to manually remove the cortex before the growth is dead, part of the roofing will further be damaged. The root should be treated and killed to prevent further damage. All that is required is one chemical treatment applied to your roof on a dry day. The moss and lichen will then harmlessly die.  Call the number above for a free estimate. Or get an online estimate.    site