Forecast in Dallas Fort Worth the next few days is RAIN, causing chimneys leaks. Every masonry, stucco, and stone chimney needs waterproofing, every single one! Chimney Saver is the best product on the market. Masters Services uses the solvent base. This stops every chimney from leaking through its core material. If the cap, crown, or flashing is bad waterproofing will only slow the leak. My experience has proven 70% of most chimney leaks are caused to never being waterproofed. Chimney waterproofing is a 10 year warranty and it works!