Below Grade Walls

Common Problems:

• Grade slopes toward building

• Inadequate waterproof membrane

• No protection board

• No extension of waterproof membrane above grade or over footing

• No foundation drain

• No gravel or filter fabric around drain

• No waterproof membrane under slab

Potential Damage:

• Efflorescence and water stains on walls

• Ponding against building and on basement floors

• Moisture migration though slabs

The Five Basic Elements For Waterproofing Below Grade Walls:

• Waterproof membrane

• Protection board

• Gravel Fill

• Foundation Drain

• Filter Fabric

Recommended Solutions:

• Slope the finish grade away from the building

• Install a membrane under the concrete building slab

• Provide a cant strip to transition the waterproof membrane at any 90 degree angle

• Install ultraviolet protection for the above-grade waterproofing.