Waterproofing old stone basement walls
Stone and rubble foundations behave differently from modern concrete. A conservation-minded sequence that puts diagnosis before any treatment and avoids blanket coatings.
Field guides
Waterproofing field guides
Each guide answers a specific masonry-moisture question first, then works through the evidence, the limits, and the point where a building-specific professional assessment is warranted. All are drawn from cited public technical and preservation sources — not from lab testing we did not do.
Waterproofing basement walls from inside
Interior coatings, targeted crack repair, and interior drainage are three different interventions. What each addresses, and where an inside-only approach reaches its limit.
Efflorescence on basement walls
The white deposit is dissolved salt carried to the surface by water. How to read it as a moisture signal without over-reading it as mold, toxicity, or structural failure.
Damp proofing vs waterproofing
Codes and technical sources separate the two by whether hydrostatic pressure is expected. A comparison across exposure, pressure, continuity, drainage, and site limits.
Basement wall–floor joint leaks
Water at the cove is the point of emergence, not proof of the point of entry. How to observe timing and extent, and why cove sealant alone rarely settles the question.
Masonry wall flashing: a continuous drainage path
How flashing, weeps, and end dams form one continuous collect-and-discharge path in an above-grade cavity wall — and why that is not a below-grade barrier.