Pouring Concrete Chimney Cap

My solution was to pour the cap in place and then remove the formwork with the help of my car jack.

Pouring concrete chimney cap.

Contents bia recommendations construction of concrete chimney crown1. Then fill the form with concrete. This article describes the construction of the concrete crown or weather cap found at the top of masonry chimneys and flues. If the chimney has clay flue liners the crown or top concrete material should never touch the flue liners.

3 rebar leaving it 2 inches in from the edges of the form. Otherwise the concrete will not bond to the brick surfaces. Construction of cast in place concrete chimney crown2. This article series illustrates common chimney cap crown types choices defects and we cite pertinent chimney top cap crown building codes standards for fire and other safety concerns.

Construction procedure of chimney crowns made of concrete is discussed below. The stones in concrete are what really give it its strength. Chimney crown also termed as chimney cap or chimney top plate is a cover provided on the top of chimney chase to prevent the entrance of rainwater into the chimney. Chimney weather cap or chimney crown construction suggestions.

The mortar mix rarely has any stones in it. The cap is designed to protect and shed rain water away from the. A chimney cap sometimes referred to as a crown is a reinforced concrete cap placed over the top of a brick and mortar chimney. Mix the concrete you will pour into the form using small aggregate.

The chimney crown should be made using real concrete not the mortar mix used for the brick or stone. This sweep said that when he does a replacement he.