White Stains On Slate Roof

Ltp grout stain remover is applied to the surface.

White stains on slate roof.

White stains forming on slate roofs photo above are interpreted by many slate roofers as an indication of remaining roof life. Trees plant debris stains. White stains on a roof can be pigment wash down from something above salts from flashing corrosion and on slate white stains that form on individual slates beginning usually as a roundish spot at the center of individual slates are a sign of aging and wear. After the slate is clean and back in its normal natural surface you should consider using a breathable enhancer sealer.

The area can be cleaned. On concrete roof tiles and fibre cement slates efflorescence is often categorised as lime bloom which appears either as white patches or as a more general lightening in colour. Here are some clues to follow. With the latter it is often misinterpreted as a fading or washing out of the colour of the material.

As the stained area increases from the perimeter or periphery of the roofing slate towards its center slate roofers reason that more of the slate area is absorbing water or becoming softer or more porous. Aesthetically these deposits are not always appealing so the following is a guide which should help aid their removal. This is normally visible on the surface of slate after it has been split. Rust or chimney soot stains red or brown rust stains around chimneys is a common roof stain.

The breathable sealer might allow the moisture to pass through avoiding the whitish staining.