Chimney Crown Repair & Waterproofing in SeaTac, WA

What crown repair & waterproofing involves in SeaTac

The crown is the concrete slab on top of the chimney that sheds rain away from the brick. When it cracks — which it eventually does in SeaTac's climate — water pours straight into the masonry, and freeze-thaw cycles turn small cracks into major damage.

We repair and replace crowns and apply breathable waterproofing that keeps rain out while letting trapped moisture escape. In King County, crown repair and waterproofing are the single best way to prevent expensive masonry damage.

Signs you may need crown repair & waterproofing

• Cracks on topVisible cracks in the concrete crown.
• Concrete fragmentsPieces of crown in the firebox or on the roof.
• Water stainsMoisture marks near the chimney inside.
• EfflorescenceWhite staining on the brick from water.
• Damp masonryBrick that stays wet or grows moss.
• Spalling brickBrick faces flaking from freeze-thaw damage.

How we handle it — our simple process

1. Assess the crownWe check the crown, brick and water entry points.
2. Repair or rebuildSeal cracks or replace a failed crown.
3. Waterproof the masonryA breathable sealer that stops rain, not vapor.
4. Protect long-termAddress the cause so damage doesn't return.

Serving SeaTac

We provide crown repair & waterproofing throughout SeaTac and the surrounding King County area, including McMicken Heights · Bow Lake · Angle Lake · Riverton Heights · Madrona · Des Moines Creek · Tyee · North SeaTac. Whatever the age or style of your home, we explain what we find in plain language before anything is decided — no pressure.