Below Grade Waterproofing


Everything we do to protect our buildings from water, below ground level.

Like above grade waterproofing, below grade waterproofing is a highly important step in your building project.  If you want your structure to last, you have to keep it dry.  Below grade, or basement waterproofing, keeps your building standing tall by keeping out unwanted moisture and draining away unwanted water.  This type of waterproofing can be found from underslab bottom of footing to top of wall at grade.

Types of below grade waterproofing include:

positive side

sheet waterproofing

liquid waterproofing

negative side


epoxy injections

blind side

sheet applied

liquid applied


Below Grade Waterproofing is greatly important in prolonging the life of your building.    To see all of what we do, visit our services page.

Let us know how we can help you

We service all above grade and below grade projects.

Let us know how we can help you.

Call Washington Waterproofing, Inc. today. 253-445-1448