House age DNA
Construction-period and house-type profiles that change what a symptom is likely to mean.
1920s house
Early cavity construction, solid floors and later retrofits often coexist.
1930s house
Cavity walls, suspended floors and original ventilation details may have changed over time.
1940s house
Material shortages, repairs and later upgrades can create mixed assemblies.
1950s house
Post-war construction commonly combines simple envelopes with decades of alterations.
1960s house
New materials, flatter roofs and services concealed in assemblies become more common.
1970s house
Energy changes, slab construction and mechanical extract systems require period-aware interpretation.
1980s house
Increasing insulation and air control changed condensation and ventilation behavior.
1990s house
More engineered products and tighter construction place greater importance on detailing.
2000s house
Modern membranes, complex roofs and mechanical systems create different failure interfaces.
2010s house
High insulation and airtightness increase the importance of commissioned ventilation and moisture management.
Apartment
Shared systems and neighboring units complicate source location and responsibility.
Brick-veneer house
A drained cavity and flashings should manage water behind the outer brick leaf.
Coastal house
Wind-driven rain, salt, corrosion and high outdoor humidity shape common symptoms.
Flat-roof house
Drainage slope, outlets, membranes, penetrations and concealed wetting dominate investigation.
House with a basement
Below-grade moisture, drainage and air pathways become central.
House with a crawl space
Ground moisture, ducts, air leakage and seasonal humidity influence the floor above.
Manufactured home
Lightweight assemblies, underbelly systems and transport joints create specific pathways.
Mountain or high-snow house
Snow loading, ice dams, freeze-thaw and large temperature swings matter.
New-build house
Construction moisture, settlement, commissioning and defects must be separated from normal drying.
Pre-1900 masonry house
Traditional solid masonry, timber floors and later alterations require moisture-compatible diagnosis.
Slab-on-grade house
Slab edges, ground moisture, services and floor finishes require a distinct diagnostic model.
Solid masonry house
Thick vapor-open walls behave differently from modern framed assemblies.
Timber-frame house
Cavity drainage, sheathing, air barriers and moisture-sensitive framing interact.
Victorian terrace
Party walls, suspended floors, chimneys and incremental services create characteristic pathways.
