Entu (UK) PLC is engaged in the sale of replacement windows, double glazing, entrance doors, patio doors and exterior improvement products within the United Kingdom. The Company's segments include Home Improvements, Energy Saving & Insulation, and the Repair and Renewal Service Agreements (RRSA). The Home Improvement segment products, doors, windows, conservatories and roofline, are sold through separate brands. The Energy Saving & Insulation segment products include solar photovoltaic installations, air-to-air heat pumps, voltage regulators, remote heating controls and boilers, as well as cavity wall insulation, external wall insulation and loft insulation. The Company's brands include Astley Facades, ZEST, Zenith, Weatherseal, Penicuik, Europlas, St Andrews, St Helens, Eco Piggy and Job Worth Doing. Astley offer external wall insulations and render systems, lightweight external wall framing, composite and timber cladding, as well as specialist terracotta and aluminum rain screens.