Heavy roof moss infestation done right by JNR for roof cleaning in portland or. by JNR Industries | Jan 8, 2013 | Portland Roof Cleaners | 0 comments Heavy roof moss infestation done right by JNR for roof cleaning in portland or. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Please enter an answer in digits:3 × one = Current ye@r * Leave this field empty Δ