Fixing chimney stucco and its water source in Knoll Ridge
Cracks are treated by type, with flexible material where they move and repair mortar where they do not.
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Clues hidden in a cracked stucco finish
- A long crack near the roof line
- Stucco pulling away at a corner
- Cracks that return after painting
- Gaps where stucco meets the roof
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Chimney stucco, one layer at a time
Repainting a stucco chimney after the repair
If your chimney was painted before, it will likely need paint again once the repair has cured. New paint should be compatible with the coating already on the surface. Loose and peeling paint needs to come off first, by hand scraping or brushing.
Fresh stucco also needs time before some paints can go on, depending on the product. We tell you when the repair will be ready for paint and whether painting is in our scope or a separate item. The written record lists the patch areas, which helps whoever paints later.
Store-bought patching products on a chimney
Many patching products sold for stucco are meant for small, sheltered repairs. On a chimney, some of them bond poorly to the old plaster or behave very differently in sun and rain.
If you have tried a patch yourself, tell us what you used and roughly when. We may be able to leave it, or it may need to come out before a lasting repair can bond. Either way, knowing what is there saves time during the inspection and makes the estimate more accurate.
What chimney parging means on the outside
Parging is a coat of cement mortar spread over masonry, often block, to give it a smooth, even face. On the outside of a chimney, parging and stucco are closely related, and people use the words loosely.
The name matters less than the condition. We treat an exterior parge coat like stucco over masonry, finding the loose areas, repairing the base and rebuilding the coat. Parging inside a fireplace smoke chamber is a different job with different materials, and it is not part of this scope.
Stucco cracks that come from movement
The National Park Service lists settlement among the causes of stucco cracking. When the structure beneath moves, rigid plaster over it cracks along the lines of stress, often from corners or openings.
A crack that widens, runs diagonally or appears alongside other signs of movement needs more than a cosmetic fix. We describe what we see. Where the movement looks structural, we tell you it needs its own assessment before the stucco is repaired, so the patch is not asked to hold the chimney together.
Stucco items written into your estimate
- Repair boundary cut to sound edges
- Top band under the crown or cover
- Exploratory opening with your approval
- Open top covered at each day's end
Common questions on stucco chimneys
Will the repaired stucco match the rest of the chimney?
Texture can usually be matched closely. Color is harder on unpainted stucco, because the old surface has weathered. We explain the likely result before you approve, and we can make small samples so you can judge the match yourself.
Does rain affect when new stucco can be applied?
Yes. Heavy rain can damage fresh stucco, so we cover the work or move a coat to another day when rain threatens. Strong heat matters too. We tell you in advance if the forecast changes the schedule.
What should I mention when I call about stucco damage?
Tell us which face is damaged, how large the area looks, whether pieces have fallen and whether there are damp marks inside. Mention any earlier patches. You can reach us by phone to arrange the free inspection.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo