CHIMNEY LEAK REPAIR - How to seal a CHIMNEY from LEAKING
Channel: Fixing and Patching Leaks
Date: 2019-10-19

Chimney Leak Repair - Turbo Poly Seal -https://bergstromm.com/product/turbo-poly-seal-roof-repair-kit-5-ft/
A common problem with chimneys is the flashing that causes leaks. The copper or aluminum flashing is used for counter flashing by inserting it into a slot cut into the chimney. After inserting the metal flashing into the slot ( 1/2" to 1" deep), caulking is used to fill the groove and seal the flashing from leaking.
For the most part, this caulking does not last, and in turn, the chimney leaks.
Cracks in the brick or stucco of the chimney can also cause it to leak.
One major issue is the mortar grout that deteriorates over time. On many occasions, the repointing of a chimney is necessary to prevent the chimney from leaking.
To prevent the chimney flashing from leaking, Turbo Poly Seal can be used instead of caulking. Turbo Poly Seal is a combination of Polyurethane and bituminous resins and stays flexible after curing.
Turbo Poly Seal will bond to metal, brick, cement, and plastic.
Steps how to apply Turbo Poly Seal to stop a chimney leak:
Step 1: Clean and remove excess caulking from the flashing and brick or cement wall. (do not remove the caulking inside the groove, keep as a filler)
Step 2: Mask off the metal flashing and the brick leaving about two inches on either side of the transition
Step 3: Use a disposable brush and pint a thick coat of Turbo Poly Seal between the masked off area
Step 4:Install the polyester fleece over the freshly painted Turbo Poly Seal embedding it covering about two inches of each side of crack or groove
Step 5: Paint a second layer of Turbo Poly Seal making sure to cover the entire fleece
Step 6: After waiting 10 minutes, remove the masking tape