Maintenance and guarantee for your new composite door from Yorkshire Doors & Windows.


Although all composite doors provided by The Lockwood Window Company are guaranteed (as outlined below), it is important to clean and maintain them on a regular basis.


  • All profile and neoprene seals on doors are guaranteed for 10 years.
  • All glass carries the manufacturer’s 5 year warranty.
  • All fittings also carry the manufacturer’s 5 year warranty.
  • All of the above is dependent on the cleaning and maintaining of your new composite doors.


  • Please do not use abrasive materials on your doors, or strong corrosive detergent.
  • We recommend cleaning frames with a soft damp cloth using a mild cleaning solution and clean warm water.
  • The rebates of the doors should be kept clean and dust free.
  • We also recommend the lubrication of all hinges and locks (all moving parts) at least once a year using a silicone spray or 3 in 1 oil for example. (We would not recommend the use of WD40 for moving parts as it is a cleaning agent and dries out the product very quickly).

Please Note:

  • General wear and tear is not covered under your guarantee.
  • Storm damage is also not covered.

If you have any questions regarding your guarantee or cleaning and maintenance of your composite doors please get in touch.