you might say "Why would I want to clean my roof? That's the way
a roof is supposed to look...right?. Why "waste" the money?" Well,
there a couple of reasons why it is important to clean a slate
roof. The first reason is that it simply looks fresh and bright
but the most important reason is Winter Weather in New England.
Almost without exception, slate problems occur where snow, moss
or algae has lain on the slate surface for prolonged periods.
In cases where trees are not hanging over a roof, the surface
is problem free (trees create a fertile environment beneath them
that fosters moss, algae and lichen growth which holds moisture
and snow in place). In winter as the daytime sun melts some of
the snow, the water falls into the slate through fissures and
cracks and absorbs into the slate. At night it freezes and expands,
widening the cracks and pores, providing larger cavities for the
next days melting water. The cycle continues with tremendous expansion
and contraction of the slate around the cracks. A once strong
and solid surface has become broken and flakey. This situation
will requires expensive repair or replacement. The best way to
eliminate or reduce this problem is to eliminate the algae, moss
Note: Proper surface cleaning involves
either physical scrubbing or some level of pressure to remove
the plaque and fertile substrate. There are several enterprises
out there marketing products that they claim do not require rinsing.
"Spray and Forget" and other "No Rinse Roof Treatments"
are good starts but do not remove the foundation which will only
invite regrowth in a very short time, sometimes in only a few
months. We all know that mouthwash alone doesn't make for healthy
oral hygiene, and that brushing and flossing are necessary. It's
no different with roofs, siding, decks, or any other surface.
There is lots of documentation
on this. Common sense also works.
|While not illustrated here, lichen
will completely digest the silica grit, exposing bare asphalt. This will not
be visible on a darker surface. It is important
the silica granules remain on an
roof so that they can do the job of reflecting the sun's rays.
Use of proper cleansers and a low pressure
rinse will ensure that your silica granules remain intact.
|| There was enough lichen and moss
on this 25 year old roof in Northern New Jersey to support a habitat
for tree frogs. Once cleaned, this roof looks nearly new even after
all these years. This is mostly due to two factors. One; the lack
of strong sun at the location of this particular home and two; these shingles were handsplit
tapered shakes. Nothing really can compare to these. They will absorb
a lot of abuse. Nonetheless, there were some rotting edges.
|If we all lived on
sea salt would cure and
the cedar shingles for
| If you want your
up to our New England
then it's time to
a maintenance plan.
| Our technique is
gentle on roofs
at all harmful to plants
maintenance free roof protector. Protect the appearance of that
or just cleaned roof with Shingle Shield
Roof Protector zinc strips. These strips are engineered to provide
long term protection from fungus, moss, and
algae. Simply install one row at or near the roof ridge line
to protect the entire roof.
Shingle Shield zinc strips react
with rain water to release powerful,
non-toxic, fungistatic compounds of
zinc oxide. For best results, thoroughly clean and disinfect
the roof prior to installing
strips. 20+ years is
is the expected period of protection.
for more info call us or go to www.shingleshield.com