Payment is due on completion of work.
Payment can be made by Bank transfer, Cash or credit/debit card (fee applies).
Guarantee as follows:
2 years on parts 
5 years on sealed units
10 years on frames
6 months on repairs to existing installations.
Any cancellations made after a quote has been accepted will incur a fee equal to the cost of materials but not including labour costs. This applies to quotes issued by email, WhatsApp, text message or verbal agreement made at a customers property or business premises. 
Sealed units are made to measure and therefore chargeable in full should a cancellation be made.