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Building Fabric

Drainage Maintenance for Care Homes

Internal and external drainage, grease traps, inspection chambers and the risks of blocked drains.

4 min readCareHomeDesk Knowledge Base

Why drainage matters in care homes

Blocked or defective drains in a care home create: flooding risk (slip hazards, equipment damage, structural damage), odour and hygiene issues in resident areas, and potential backflow of wastewater into drainage furniture. Grease accumulation from commercial kitchens is the most common cause of blockage and the most preventable.

Kitchen grease management

Commercial kitchens must have grease trap or grease interceptor systems in place to prevent fat, oil and grease (FOG) from entering the drainage system. Grease traps must be cleaned by a licensed waste contractor regularly -- typically monthly or quarterly depending on volume of food prepared. Records of grease trap cleaning should be retained and may be requested by the local authority.

Drainage survey

A CCTV drainage survey should be commissioned when there is any suspicion of root intrusion, collapse or significant misalignment, following any major ground movement or nearby construction, and as part of pre-purchase due diligence. The survey produces a report coding defects to MSCC4 (Manual of Sewer Condition Classification) standards.

External drainage maintenance

Gullies, grates and inspection chambers must be kept clear of leaves, debris and build-up. A twice-yearly programme of gully clearance -- typically spring and autumn -- prevents blockage during heavy rainfall. Inspection chamber covers should be checked annually for structural integrity.

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