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  2. Damp (structural) - Wikipedia

    en.wikipedia.org/wiki/Damp_(structural)

    Common sources may include cooking, bathing, dishwashers, etc. The moisture in the air condenses on cold surfaces, sometimes inside the walls called interstitial condensation. Buildings with poorly insulated walls are very prone to this problem. It often causes damage similar to damp in a building and often appears in similar places.

  3. Interstitial condensation - Wikipedia

    en.wikipedia.org/wiki/Interstitial_condensation

    Interstitial condensation is a type of condensation that may occur within an enclosed wall, roof or floor cavity structure, which can create dampening. When moisture-laden air at dew point temperature penetrates inside a cavity of the structure, it condenses into liquid water on that surface. The moisture laden air can penetrate into hidden ...

  4. Condensation - Wikipedia

    en.wikipedia.org/wiki/Condensation

    Condensation on a window during a rain shower. Condensation in building construction is an unwanted phenomenon as it may cause dampness, mold health issues, wood rot, corrosion, weakening of mortar and masonry walls, and energy penalties due to increased heat transfer. To alleviate these issues, the indoor air humidity needs to be lowered, or ...

  5. So, You Have a Water Stain on Your Ceiling—Here's What a ...

    www.aol.com/water-stain-ceiling-heres-plumber...

    If the cause of a water stain on a ceiling is condensation from an HVAC system, you need to work with a contractor to improve ventilation in your home and add insulation in the affected area.

  6. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    Condensation can pose a safety risk as it can promote the growth of mold and wood rot as well as possibly freezing emergency exits shut. Certain production and technical processes and treatments in factories, laboratories, hospitals, and other facilities require specific relative humidity levels to be maintained using humidifiers, dehumidifiers ...

  7. Cavity wall - Wikipedia

    en.wikipedia.org/wiki/Cavity_wall

    A cavity wall is a type of wall that has an airspace between the outer face and the inner, usually structural, construction. [1] The skins typically are masonry , such as brick or cinder block . Masonry is an absorbent material that can retain rainwater or condensation.

  8. Damp proofing - Wikipedia

    en.wikipedia.org/wiki/Damp_proofing

    A DPC layer is usually laid below all masonry walls, regardless if the wall is a load bearing wall or a partition wall. A damp-proof membrane (DPM) is a membrane material applied to prevent moisture transmission. A common example is polyethylene sheeting laid under a concrete slab to prevent the concrete from gaining moisture through capillary ...

  9. Thermal bridge - Wikipedia

    en.wikipedia.org/wiki/Thermal_bridge

    Temperature distribution in a thermal bridge This thermal image shows a thermal bridging of a high-rise building (Aqua in Chicago). A thermal bridge, also called a cold bridge, heat bridge, or thermal bypass, is an area or component of an object which has higher thermal conductivity than the surrounding materials, [1] creating a path of least resistance for heat transfer. [2]