Union sits in Boone County where humid subtropical conditions bring steady moisture even during mild winters. Homes in Ryle and along US-42 often have brick or stone chimneys that absorb water through porous mortar and flashing joints. Left untreated, this leads to interior staining, spalling brick, and draft issues when cold fronts move through Florence and Burlington. Proper waterproofing starts with identifying every penetration point around the crown, flue, and step flashing before any coating is applied.
We use breathable masonry sealers formulated for Kentucky's freeze-thaw cycles rather than film-forming products that trap vapor. Edge cases include chimneys on split-level homes built in the 1980s where the roofline intersects the chimney at odd angles, creating hidden ledges that collect leaves and water. Code requires maintaining proper clearance at the roof deck, and we always check that existing cricket and counter-flashing remain intact before sealing. Homeowners sometimes attempt DIY sprays that fail within one season because they skip the cleaning step that removes efflorescence first.
Terrain around Union Community Park slopes gently, directing runoff toward many foundations and increasing splash-back onto lower chimney courses. We pay extra attention to these lower six feet where soil moisture stays high year-round. Application timing matters; we avoid days with high dew points common in Boone County summers so the sealer cures fully. Each job includes a final water test from the roof to confirm no new paths remain.
Technician insight
In Union, the thing that catches most people out with chimney waterproofing is how the gentle slope toward Ryle lets soil moisture wick up the lower courses even in mild winters; homeowners seal only the top and miss the bottom four feet where the real damage starts on pre-1995 homes.
Ryle Split-Level Chimney Leak
Water stains appeared on the second-floor ceiling after a humid spell. We found failed step flashing on the east face where the roof met the chimney at an angle. After cleaning and sealing the full height plus re-securing the flashing, the next heavy rain produced no new moisture inside.
How it works
- 1
Site Assessment
We inspect the full chimney height, crown, flashing, and surrounding roof from 10829 US-42 access points, noting any prior repairs common in Union homes.
- 2
Surface Preparation
Loose mortar, efflorescence, and biological growth are removed so the sealer bonds directly to sound masonry.
- 3
Sealer Application
Breathable water-repellent is applied in two coats to all exposed surfaces including the crown and flue exterior.
- 4
Verification
A controlled water test confirms the chimney sheds moisture before we leave the property.
Pricing
Cost depends on chimney height, number of sides exposed, and condition of existing flashing; we provide upfront quotes after inspection.