Need to engage a someone to clean the roof which has quite a bit of lichen on it, but first am seeking some advice on this forum about the process I should agree to. Is there a preferred method? I see some info on certain sprays and chemicals being used, but are they bad for the roof in the long term. What about water blasting?
More interested in getting it done correctly than the cost.
Thanks in advance.
More interested in getting it done correctly than the cost.
Thanks in advance.
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