Cleaning your roof with an approbate roof cleaner handles most of these issues including black stains, green stains and
silver/gray stains (these are often round or flower shaped in appearance). Most can handle stains that appear to be in clumps or
mats on the roof (more common in the northeast and northwest sections of the US). However most cleaners do not work on
stains caused by rust or creosote (from wood burning stoves) nor do shingle cleaners remove paint from the roof. Algae, Moss
& Lichen also Damage the Roof & Shortens Roof Life It is bad enough that roof stains are ugly, unfortunately they also lead to
roof damage. The granules which protect & color the roof are dislodged over time. The stains hold moisture to the roof's
surface and can cause decay & rot of the roof's underlayment. Not only is your roof being discolored by the stains, but life of
the roof is shortened leading to an early roof replacement. Moss and lichen do the same -however, the damage normally
occurs much faster.There are Three Ways to have a Clean Roof Again
1. Re-roof - an expensive option. Your roof likely has more useful life.
2. Power Wash or Brush Clean - damages the roof shingles by breaking away the granules that protect & color the roof shortening the life of the roof.
3. Call us at Hedberg and Son to schedule a professional inspection and evaluation of your project today.