Waterproofing Estimating Services That Cover Every Layer and Detail

A complete waterproofing estimate covers every scope component from substrate preparation through protection, primer quantities by coverage rate, membrane area by system type and application method, protection board by area, drainage composite layer by coverage area, termination bar by lineal footage, detail membrane at joints and penetrations counted individually, drain flashing counts, expansion joint flashing by lineal footage, and flood testing scope where horizontal waterproofing systems are specified. Every component is referenced to a specific drawing location and specification section, so your waterproofing contractor can verify the basis for each quantity independently.

Positive-side waterproofing is applied to the exterior of a foundation wall before backfilling — the preferred approach because it keeps water away from the structure entirely. Negative-side waterproofing is applied to the interior face of a foundation wall when exterior access isn't possible — it resists water under hydrostatic pressure but cannot prevent moisture from entering the substrate. Blindside waterproofing is a pre-applied membrane installed against the excavation shoring or lagging before the foundation concrete is poured — used when neither exterior access nor interior application is viable. Each system carries different material specifications, labor productivity rates, and drainage requirements that require separate estimating approaches.