NPT Homes The refurbishment of 400 failed cavity houses in pepper potted locations across the Neath Port Talbot area. Client NPT Homes Location Neath Port Talbot Start Date January 2015 Value £3,000,000 Length Work Type Cavity Extraction, External Wall Insulation, Roofing, Associated Works Number of Properties 400+ Type of Properties Insulation Type 80mm Grey EPS U Value Finish Applied Pebble Dash