Lichen holds moisture against the surface thus speeding up the wear and tear.
White spots on concrete roof tiles.
Although mold can grow in your roofing materials if water gets trapped somewhere if you see any of the following on top of your roof, algae are more likely your problem:
The term covers a number of phenomena and various forms can occur.
The deposits found on different materials vary significantly in chemical composition and method of formation.
Foxhole , 24 mar 2017 #5
Take a clean bucket and fill it with warm water and add about 300 ml bleach to it.
Details are at white stains on roofs.
When the water evaporates, a white, fluffy structure is left behind.
Most times, the mold grows after prolonged dampness or flooding.
The lichen can also penetrate your roof’s exterior causing the shingles to separate and spell disaster for your roof!
Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete.
Generally speaking, the materials roofing tiles are made from are chosen for the look that you are trying.
Efflorescence describes white deposits found on building materials such as concrete roof tiles, block paving, clay bricks, calcium silicate bricks, mortar and concrete.
Efflorescence is a white crystalline deposit that is composed of salts, lime and/or other minerals.
The trick now it’s time to start your fight with the white stains!
Roof tiles in the tucson area, and most areas for that matter, fall mainly in two categories;
You can easily identify it by its characteristic white cottony mycelium.
This will remove all the moss and lichen as well as any built up dirt.
Clay tiles must be dry to avoid slipping.