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Environmental Design

Moisture

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Full-Text Articles in Architecture

The Causes Of Surface Condensation And Mould, And The Responsibility Of Relevant Parties To Alleviate Them, Joseph Little Jun 2021

The Causes Of Surface Condensation And Mould, And The Responsibility Of Relevant Parties To Alleviate Them, Joseph Little

Reports

All over Ireland large numbers of people live in unsanitary conditions suffering poor indoor air quality, surface condensation and mould. Where the occupants are tenants the cause of the conditions and identification of the parties responsible can cause much stress. Condensation and mould growth on the internal surface of a room are caused by a combination of factors due to specific conditions. In severe cases, one of these factors may lead to surface condensation and/or mould growth, but in general, surface condensation and/or mould growth occurs when two or three of these occur together. Even though multiple causes and shared …


Managing Moisture - The Key To Healthy Internal Wall Insulation Retrofits Of Solid Walls, Joseph Little, Benat Arregi Apr 2013

Managing Moisture - The Key To Healthy Internal Wall Insulation Retrofits Of Solid Walls, Joseph Little, Benat Arregi

Conference papers

This study investigates the appropriateness of internally insulating solid walls to the Passivhaus standard. A number of variables are assessed using numerical hygrothermal simulation (under EN 15026) to check (1) associated risk of mould growth on original substrate and (2) if they result in a greater likelihood of timber decay at built-in joist ends. While air and vapour control layers (AVCLs) perform well regarding mould risk in low absorption walls, the results question their appropriateness where joist ends are built-in: when AVCLs are used, moisture levels at joist ends can potentially rise above critical thresholds, even in low absorption walls. …