Quick Cleaning Enquiry

Passionate about providing the very best quality window cleaning services across Greater London and West Hertfordshire, including Watford, Stanmore, Rickmansworth, Denham, and Bushey.

  • Trained, uniformed, insured, and fully equipped staff.
  • During the day, or out of hours – whenever suits! Our team will be flexible around your needs, providing daily, weekly, or one-off services as required.
  • We are SafeContractor accredited, meaning you can trust us to provide rigorous standards of health and safety at all times.
  • Service to residential and commercial customers.

We’re delighted to provide the safest and highest quality jet washing to your exterior render, paving, patios, driveways and car parks, as well as cleaning bin stores, garages and brickwork.

This service can be provided in conjunction with other cleaning tasks or on its own. Arrangements can be made for a regular visit, whether quarterly or yearly, and is available alongside any task, or independently to domestic & commercial customers.


Our service uses the very latest mains power and petrol powered machines. Service can also be provided where no mains power or water supply is available.

Our staff are all trained to control mess, operate effective water containment processes to ensure the most professional results. For small areas where no drainage or disbursement is available, water extraction services are also available.

What you can expect from us

  • The ability to cover absence at short notice.
  • Cover over main holiday periods, including Easter, Christmas and the New Year.
  • We provide all chemicals and equipment for all cleaning tasks, including cloths, vacuums, sanitisers, freshners and de-scalers.
  • A comprehensive list of customers who are delighted with our service.
  • Over 14 years of experience providing bespoke office cleaning service to Watford businesses.
  • Personalised service, designed just for you.

Prices for jet washing services are very personal, and are prepared following a brief visit to discuss your requirements. Prices will be sent to you the very same day, without any obligation.

Callver is committed to providing the best, most trusted cleaning service possible, using the very best staff around, with the best materials available at a reasonable and fair price... It’s as simple as that.

Our Cleaning Blog


We’re very excited to announce our new Window Cleaning Service launches next week.