Welcome to Rock Solid Doors, Composite Door installers covering London & the home Counties. Our Solidor range of doors start at £900 fully fitted including VAT!! Whatever your requirements our current range will not disappoint in terms of security good looks and off course thermal efficiency . We take great pride in only offering the very best Doors available. and only ever use our own fitters. All of our Doors come with a minimum 12 Year Guarantee as standard.