Building Social Value through Double Glazing

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How can we help you?

The residents’ zone has been created for you to find more information about the process of installing your new windows or doors, digital brochures to help you use and care for your new products, a link to complete the customer satisfaction survey and more information on how our organisation can help you.

Our commitment to you

We are committed to placing customers at the heart of our service. We pride ourselves on the service that we give. Our goal is to set the highest standards in our industry, maintaining a reputation for quality and service in all we do.

We Will:

  • Always show you our photographic identification cards and ask permission before entering your home
  • Treat your home with respect
  • Act in a professional way and be polite, helpful and friendly at all times;
  • Keep you informed at every stage of the process;
  • Organise and keep mutually convenient appointments;
  • In circumstances beyond our control, tell you at the earliest opportunity if we need to change your appointment
  • Respond and deal with any enquiries promptly;
  • Have a well-trained workforce with the skills and knowledge to do the job;
  • Check the windows or doors are fitted well and work properly
  • Clear all rubbish each day; and
  • Always keep your home secure.

We Ask You To:

  • Always check our identification cards:
  • Treat our team politely and with respect:
  • Tell us about any special needs you may have;
  • Be ready for us by moving curtains, blinds, furniture and valuables where possible
  • Keep your children and pets away from the work area;
  • Make sure someone over 18 is present throughout the work;
  • Do not touch tools, equipment or materials; and
  • Help us to improve by giving us your views and suggestions

We Monitor:

  • undertaking satisfaction surveys;
  • recording customer complaints, comments and suggestions; and
  • using feedback to help identify improvement actions

Contact Us:

Our customer service standards will:

  • strive to resolve your query at the first point of contact or provide you with the details of who can help, together with timescales, and
  • aim to acknowledge receipt of any complaints within three working days and respond within five working days.

Providing high levels of customer service is the duty of all members of our team. Our Customer Service details are below:

  • Phone: 020 8665 1331
  • Email:
  • Post: Cosyseal (DG) Ltd, Lynton House, 304 Bensham Lane, Thornton Heath, Surrey CR7 7EQ

How can we help you?

Get in touch to see how our experts can help you.

Contact us