We are one of the UK's leading manufacturer of high quality composite doors. Suppliers to domestic, trade and the commercial market, our doors are manufactured within 15 working days. All our products are made using a Solid Core Material covered with a tough coloured ABS skin giving both a highly secured external door with the added bonus of being virtually maintenance free. Sigma have flexibility in manufacturing to offer both a 44mm and 48mm allowing all doors to fit into numerous profiles.