What is the most effective method for applying asphalt waterproofing on a foundation?

The most effective method for applying asphalt waterproofing on a foundation involves using a spray-on or roll-on application on a dry foundation, ensuring that the application occurs at least 2 inches below grade. This technique is beneficial for several reasons.

Firstly, applying the waterproofing material when the foundation is dry helps to ensure better adhesion and prevents moisture from interfering with the bonding of the asphalt to the foundation surface. This leads to a more effective waterproof barrier.

Secondly, the practice of applying the coating 2 inches below grade is important as it protects the foundation from water infiltration that can occur from surface water runoff. Keeping the waterproofing below the ground level minimizes the risk of hydrostatic pressure that can compromise the integrity of the foundation.

Additionally, spray-on or roll-on methods allow for a more uniform application compared to other methods such as brushing or pouring. This uniformity enhances the effectiveness of the waterproofing by ensuring complete coverage and reducing the likelihood of weak points where moisture could seep through.

Overall, this method combines optimal conditions for application with strategic placement, maximizing the waterproofing's effectiveness and longevity.