There is no maximum thickness for TotalBoat Polyester Fairing Compound. The amount of MEKP catalyst should be reduced proportionally for larger masses and thicker applications to prevent the reaction from overheating.

Use discretion when deciding whether to use this product. It is designed for fine fairing applications, not for filling large gaps or deep crevices. Applying it too thickly may reduce the product’s flexibility, which can lead to cracking under stress.