Double glazed or triple glazing our casement windows are top rated A-Rated as standard with options to take your Swansea SA4 to a warmer energy efficient house and home. Your Local Installers in: Blue Anchor, Gorseinon, Gowerton, Hendy (Carmarthenshire), Loughor, North Gower, Penllergaer, Penclawdd, Pontarddulais, Three Crosses, Swansea SA4.