Waterproofing Exterior Brick Walls Below Grade

For fish ponds we recommend using drylok original.

Waterproofing exterior brick walls below grade.

The bottom of a veneer brick wall system should have thru wall flashing and weeps. Below ground areas are difficult to waterproof effectively. Retaining walls basements foundations. With contemporary design living areas are often at basement level or below natural ground level.

Where grade slopes down along an exterior wall the waterproofing will step down incrementally so that it continues to protect the below grade occupied space. Kilz basement masonry waterproofing paint is a premium interior exterior waterproofing paint designed for porous concrete and masonry surfaces. Waterproof interior exterior above or below grade walls including basements retaining walls and bare concrete swimming pools foundations and more. Most foundation and below grade walls are constructed from poured concrete or concrete masonry block.

If the exterior wall materials will not protect the waterproofing at grade base flashings should be used to protect the waterproofing from ultraviolet uv radiation exposure. In these cases there is always the potential for movement of ground water and surface water to run off into the building structure. In this wet weather i am finding that my cavity wall insulation is fully saturated and its bridging over to my floor timbers. It seems the rain is running down over the painted render and saturating the lower brick.

The important thing is whether or not the thru wall flashing and weeps are located above grade. This low odor masonry paint is formulated for waterproofing above and below grade basement walls masonry walls retaining walls cinder and concrete blocks stucco and brick. If the flashing is below grade the wall will not be able to drain. The exterior walls are rendered leaving approx 2 3 foot of exposed brick.

Concrete products are porous and unless treated are not waterproof allowing water to migrate into the building a damp proof coating can be applied directly to the surface of the concrete below grade walls. Basement and masonry waterproofing paint with nanoguard technology is an interior exterior waterproofer specially designed for porous concrete and masonry surfaces.