Patching A Chimney

Patch cracks in the large crown area.

Patching a chimney.

To begin restoring the brick mortar joints a process commonly known as tuck pointing first prep the area to ensure good mortar adhesion image 1. Cover the area where the chimney used to be with tar paper. This will make a good base for the shingles and create a barrier for moisture and heat loss. New mortar is smooth and solid but as the seasons go.

Apply second coat photo by reena bammi. Pour the mortar into a. If there is no leak on the front or low side of the chimney move the water one shingle at a time up along the side of the chimney. Mix up a batch of stucco following the second coat recipe and trowel.

Mix your mortar according to the manufacturer s label instructions. Apply the mortar to the joint using a pointing trowel if one is available. Wait seven days then remove the plastic and mist the patch with water. Always run the water downhill.

Install a chimney cap which. Repair or replace the chimney crown the top part of the chimney if it s damaged. Don t worry if it drips a little or. Caulk around the flue and the crown.

Next install the shingles starting at the top of the area you are patching. Mortar holds bricks together. Depending on the size of the area you are repairing you may need to refill your bag with more mortar. Repointing crumbling mortar 1.

Tape a plastic sheet over the patch to keep it from drying out. Chisel cracked or crumbling mortar from the joints with a hammer and cold chisel. When the patch loses its wet sheen score its surface to improve the bond to the next coat. It is a good idea to use some roofing tar between the shingles to make sure they adhere to each other.

Because it may be several days before the repairs are done mark the spot firmly since water or rain will fade the lumber crayon quickly. Follow the steps on how to waterproof a chimney. Squeeze the bag hard enough so that the gaps are slightly bulging with mortar. Clean each joint of loose mortar.

Make only enough to work for 15 to 20 minutes at. Try one or all of the following. Repair or replace the flashing. Waterproof the chimney with a specially designed solution that is vapor permeable and allows the brick to breathe out.

One major avenue for water to enter your home and cause damage is at the joint.