Tamoseal – Waterproofs And Preserves The Chimney Crown

TAMOSEAL is a cement-based, polymer-modified material designed to waterproof concrete and masonry.

When you should have Tamoseal applied

If the chimney crown is still bonded well to the brick below, you should have Tamoseal applied (2 coats) to waterproof and preserve the crown. The crown may have several cracks in it, but if you were to try to remove the crown and pour a new one in its place, you may end up loosening up the brick that the crown is still well-bonded to:

A chimney crown, cracked, still bonded well to the top brick of the chimney.

(Cracked crown, still bonded well to the brick)

Two coats of grey Tamoseal brushed on top of the chimney crown.

Two coats of grey Tamoseal have been applied. The product is mixed to consistency using a mechanical mixer, which is the method prescribed by the manufacturer, Euclid Chemical.

Severely cracked and deteriorated chimney crown. Needs to be replaced with a new crown.

(Example of a crown that needs to be removed and replaced with a new crown.)

(Video of the author, applying Tamoseal.)