Our pure water window cleaning methods clean frames as well as windows and are suitable for all windows, conservatories, solar panels and cladding. Payment: Payment for domestic work is required within 7 days. Payment for commercial work is required within 14 days. This applies if you are paying by cheque (domestic customers must add £0.50 to invoice if paying by cheque), Paypal, cash or BACS. Customers paying via BACS have the option to arrange payment to suit their own payment cycle. Late payment: If you cannot make payment on time, please contact us. Repeated late payment is unacceptable and you will be given notice that we no longer wish to continue cleaning your windows. If payment is not received within 30 days statutory interest will be charged on the outstanding amount, this is currently 8% plus the current Bank of England base rate. The daily rate of interest will be calculated and a new invoice will be sent.