Remove creosol from chimney

Hi Folks, I'm looking for a way to remove creosol from the outside of my chimney. It's cinder block also there's some on the roof shingles.
Thanks Dick
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.