Slate Roof Stains

Slate edges showing moisture absorption but generally good condition these slates have a good remaining life.

Slate roof stains.

Stains and wear indicators on slate roofing a photo guide. Take a flashlight and check for water stains on the roof timbers especially after a long period of rain. You can spot a sloped slate roof tile more easily from the ground. You can also do a fair amount of checking at ground level.

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. If the tiles have water stains check for any hairline cracks. White efflorescence on roofing slates. If your slate is looking a little worse for wear do not be alarmed.

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. A slate roof can cost from 12 to 40 per square foot according to websites and roofers i consulted. The white markings shown on these roofing slates is a mineral deposit left behind as water evaporates. Slate is a sedimentary rock with miniscule layers that easily cleave.

This quality is what distinguishes slate as a suitable roofing material. Once turned into roofing material slate absorbs water and can naturally de laminate during the freeze and thaw cycles of winter.