My Tadelakt is Blistering during application. What's wrong?Updated 2 years ago

Blisters, often the size of a quarter, may appear during the application of tadelakt, indicating the presence of air trapped beneath the finish. There are multiple reasons why this could happen:

Insufficient base coat: If the base coat is too thin or uneven, it might not provide enough absorption to adequately dry the plaster, leading to blister formation.

Premature burnishing: Burnishing should only be undertaken once the tadelakt layers have solidified due to absorption from the base coat. Applying trowel pressure too early might cause the tadelakt coats to detach from the base coat.

Excessive working: There's a common inclination to iron out the blister by increased troweling. This tends to exacerbate the problem, enlarging the blister.

If you encounter blisters during your work, the optimal approach is to allow them additional drying time. Once the area has sufficiently hardened, you can smooth them out.

On occasion, a small crack may form at the blister site as the tadelakt dries. We recommend addressing such cracks with our  Tadelakt crack repair method.