Location: Burford High Street, Cotswolds
Type of property: Mid-terraced Grade II Listed cottage, constructed of solid rubble-filled stonework, overlaid with a stone-tiled roof covering
Services used:
Materials Used:
Problem: Internal observations resulted in the findings of elevated moisture readings above the floor level to an average height of 1.3m. There was also visible dark staining and blown wall plaster evident. Skirting boards that were tested in these areas also showed moisture readings of 22-26%, making them vulnerable to fungal decay. Evidence at the time of the survey indicated the predominant source of moisture was lateral water ingress from the raised abutting flower beds and front step. Discolouration of wall plaster is symptomatic of moisture and ground salt. Salts are carried in solution into the masonry, and they migrate to the surface of the plaster as the groundwater evaporates from the wall. These salts: chlorides and nitrates, can be ‘hygroscopic’ meaning that they will readily absorb moisture from the atmosphere, exacerbating the damp problem. During external observations it was confirmed that the ground level was approximately 100mm above the internal floor level, and that the downpipe from the kitchen was discharging directly onto the ground surface rather than into a drain or soakaway.
Works completed: the condition of below-ground drains. This is a service provided by drainage contractors, which typically costs anywhere in the region of £400-£800. The CCTV will identify defects in the drainage system which may result in the escape of water and subsequent dampness. Visual inspection by a professional of the foul and rainwater drains was also recommended. Our works included:
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