Fixing chimney stucco and its water source in Whisper Walk
Cracks are treated by type, with flexible material where they move and repair mortar where they do not.
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How failing chimney stucco shows itself
- Hairline cracks across one chimney face
- A bulge or swelling in the plaster
- Rust marks bleeding through the finish
- A vertical crack where chimney meets wall
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Stucco repair details that decide the result
The weep screed at the base of framed stucco
Stucco on a framed wall should end at a weep screed, a metal or plastic strip that lets water behind the plaster drain out at the bottom. The code requires it on exterior stud walls and sets how the barrier and lath lap onto it.
A buried, blocked or missing screed can trap water at the base of the chase. We check the bottom edge of the stucco during the inspection. If the screed needs work, we explain what is involved, because the lowest part of the plaster may need cutting back to reach it.
Control joints on larger stucco faces
Large stucco surfaces can crack as the plaster shrinks while it cures. Control joints are planned lines that give that movement a place to go, so the cracking happens where it is meant to.
The standard for plaster application sets how control joints are spaced, and base coat makers refer back to it. A small chimney patch rarely needs one. A full restucco on a wide chimney face may. Where an existing joint is present, we keep it in the same place rather than plaster over it.
Questions to ask before approving stucco work
A few questions make a stucco estimate easier to judge. Ask what sits behind the stucco, how the edges of the repair will be cut and how the patch will be cured between coats.
Ask how the color and texture will be matched and whether painting is included. Ask what happens if the repair area grows once the wall is open, and what the warranty covers. We expect these questions and answer them before you approve anything, in writing where it helps.
The strip of plaster just below the crown
The strip of stucco just below the crown or cover takes water first. When the crown sheds water poorly or the cover leaks, that band is where cracks, stains and loose plaster often begin. It is also the hardest part to see from the ground.
We examine it closely even when the damage looks worse lower down. Repairing the lower face while the top band stays open tends to waste the work. If both need attention, we sequence the repair from the top down and explain why that order matters.
Stucco work we separate on the estimate
- Finish coat texture matched
- Sealant at stucco transitions
- Full-face refinish priced as an option
- Protection for paving and plants
What people ask about chimney stucco
How do you tell stucco over block from stucco over framing?
We look at the top first, because a metal cover usually means a framed chase and a concrete crown usually means masonry. Tapping, the bottom edge and the attic view add more. Where the clues disagree, we suggest a small opening you approve.
How does the discount after the free inspection work?
If you approve the work within 72 hours of your own free inspection, a 10% discount applies to it. The window counts from your inspection, not from a calendar date. Ask us about any line on the estimate during that time.
Is chimney parging the same thing as stucco?
On the outside of a chimney they are closely related, and people use the words loosely. Both are cement coatings over masonry, and we repair them the same way. Parging inside a smoke chamber is a separate job with different materials.
More Ways to Care for Your Fireplace
- Wood-Burning Fireplace Insert InstallationFit a wood-burning insert after assessing its host fireplace and full connection requirements.
- Hurricane and Storm Damage Chimney RepairAssess storm-related chimney concerns and distinguish temporary protection from permanent component repair.
- Top-Sealing Damper InstallationFit a top-mounted damper only after checking the fireplace, product restrictions and control route.
- Chimney WaterproofingTreat suitable chimney masonry after checking the surface, repair needs and product requirements.
- Chimney Flue RepairAssess repairs to damaged existing flue linings and distinguish them from a new liner installation.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo