Historic slate roofs should be repaired rather than replaced whenever possible.
Slate roof discoloration.
That ll prevent the cleaner from drying out too quickly.
When cleaning a slate roof don t use chemicals like ammonia or chlorine bleach.
If your slate is looking a little worse for wear do not be alarmed.
Often the damage is hidden under overlapping slate courses and becomes apparent only when the roof starts to leak.
If the tiles have water stains check for any hairline cracks.
But there are other roof stain colors and causes.
Before applying the cleaner spray the roof with water to cool it down.
Slate is a beautiful and popular medium for fireplaces and patios but it is highly susceptible to stains from water and hard calcified deposited stains under pots and other items.
You can also do a fair amount of checking at ground level.
Then spray the cleaner onto the shingles photo 1.
You can spot a sloped slate roof tile more easily from the ground.
Before replacing a slate roof check for isolated damage corroded and worn flashings leaky gutters poor ventilation in the attic and other possible sources of moisture.
Slate shingles do not lie flat against each other and can easily snap under pressure.
Here we give photographs of slate roof conditions including normal wear on slate roofs worn out slate roofs types of slate roof wear and damage and stains or discoloration on slate roofs.
Also slate is slippery when wet.
Buildup of moss and debris on slate roofs hold moisture in the slates that can split them during winter.
White stains on slate roofs efflorescence or salt stains from rain water sometimes appear on slate shingles.
This slate roofing photo series shows all kinds of roofing slate defects.
You can t walk on a slate roof no matter how shallow its pitch.
Pour it into a pump sprayer strap yourself into a full body harness tie it down and climb to the roof.
Moss often grows in the shade of trees too.
Slate roof defect photo library.
Trees plant debris stains stain patches under trees or nearby may be due to seeds berries leaves and other debris falling and decaying.
The remedies for and means of preventing stains on roof shingles are discussed as well.
