More than likely it is spreading from your attic into your roof.
White mould on roof tiles.
Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.
Roof mould is.
Graphic left courtesy spray and forget mildew and moss remover.
Roof cleaning is a topic that draws yawns in new england but causes shudders and screams of agony from florida and points south where vegetable life seeks world domination.
How do we keep that fungus among us under control.
If your roof was simply covered in dust it would be very easy to clean but due to the presence of the algae mold and so forth cleaning a roof becomes much more involved.
If possible up the insulation at ceiling level and seal off the down lighters as previously advised.
Replace cracked and loose tiles uncovered during cleaning.
To make up 2 gallons of the bleach solution use 1 cups of bleach.
Next mix 1 quart of bleach 1 gallon of water and cup of trisodium.
Several natural remedies can kill the lichens and restore the look of your roof tiles.
Common areas of white mold growth include attic sheathing and crawlspace framing.
Most dirty roofs are covered in various molds algae fungus and lichen.
This growth while harmless can appear very similar to white mold growth.
Install ventilation tiles in the roof slopes or if the property has perimeter ventilation generally a thin wire mesh at soffit level or circular vents cut into the soffit.
A dirty roof is actually full of more than just dirt.
There is also the possibility that you might unintentionally damage some tiles walking on the roof.
Lichen on terracotta roof tiles is particularly unappealing to the eye and is best handled before it has a chance to cake in and ruin the tiles.
While lichens don t damage the structure of roof tiles they can stain the surface of the roof as well as trap moisture.
This will be used in buffing the roof in order to remove the.
To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals.
Clean and dry cloth rugs.
There s less daylight and lousy weather making it easier to put off dealing with until you can t any longer.
Mold and mildew builds up a little at a time over the winter.
A trained mold inspector can readily determine if the growth structure is from white mold or efflorescence.
White mold can be found anywhere conditions conducive to mold growth are present.
Moisture increases the chance of mold growth which can damage the roof tiles.