Quote:
Originally Posted by Descant
There is concern that power washing or pressure application with a hose may damage shingles or force water under the shingles. Same goes for brushing with a broom or similar.
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Seriously, washing your roof with a hose will damage shingles? If you're on well water, I doubt you have that much water pressure.
OK, maybe don't pressure wash if you're afraid it will ruin your shingles.
What about torrential downpours?