Slate Roof Stains

Stains and wear indicators on slate roofing a photo guide.

Slate roof stains.

This quality is what distinguishes slate as a suitable roofing material. The white markings shown on these roofing slates is a mineral deposit left behind as water evaporates. Once turned into roofing material slate absorbs water and can naturally de laminate during the freeze and thaw cycles of winter. Here is a diagnostic guide to types of stains and staining materials found on roof surfaces black red green brown or other coloured stains on asphalt roof shingles or on other roofing materials need first an accurate diagnosis of the stain cause and then proper steps to remove the stain or to prevent future staining on roof shingles surfaces.

You can spot a sloped slate roof tile more easily from the ground. Take a flashlight and check for water stains on the roof timbers especially after a long period of rain. Slate edges showing moisture absorption but generally good condition these slates have a good remaining life. Slate is a sedimentary rock with miniscule layers that easily cleave.

That warranty should contain a guarantee that if the slate develops pyrite stains ugly. A slate roof can cost from 12 to 40 per square foot according to websites and roofers i consulted. 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. Staining on roofing slates.

If your slate is looking a little worse for wear do not be alarmed. White efflorescence on roofing slates.