How to Maintain your UPVC Products

As with any equipment, to obtain complete satisfaction it is advisable to carry out basic, regular maintenance. This post will contain useful tips and information to help you get the best out of your investment.

Glass Cleaning

  • Whilst cleaning your double glazed units it is recommended that you remove any hand jewellry as this will prevent scratches.
  • Any proprietary household cleaner may be used with a soft cloth and it is recommended that heavy external grime be initially removed with a solution of soap and water.
  • Laminated glass, or glass containing Georgian bars are cleaned in exactly the same manner.

Leaded Glass Cleaning

  • In this type of double glazing, lead strips are bonded to the outside and inside of the external pane of glass.
  • Take care when cleaning leaded lights as excessive pressure might dislodge the lead from the glass surface.
  • The use of warm soapy water and a soft cloth, moderatley applied will prove an adequate cleaning method.

Scratched Glass

  • If scratches occur, most can be removed with jewellers’ rouge, or an equivalent rubbing compound.

UPVC Frame Cleaning

  • Wash frames with a soap and water solution periodically to remove any grime and atmospheric deposits.
  • If required, clean with UPVC solvent or an alternative cleaner to remove any stubborn blemishes.
  • Take care not to disturb sealants.

Conservatory & Porch Roof Cleaning

  • Roofing, rafters and UPVC componenents fitted to these structures must be cleaned in a similar manner to UPVC frames (see above).
  • Clear gutters of leaves and debris as required to avoid overflow of rainwater and ensure unobstructed drainage.
  • Wash roof panels with soap and water solution periodically to remove grime and atmospheric deposits.


  • Your double glazed products are designed with an in-built drainage system, comprising slots within the thresholds that allow any water ingress to flow to the outside. To ensure an efficient system these slots must remain unblocked.
  • Periodically, remove dirt, clear the drain slots (situated in the frame rebates) and check drainage operation by flushing through with water.


  • During cleaning and general maintenance ensure that any hand-inserted weatherseals fitted to your products do not become dislodged from their grooves. Should this occur, slide back into position immediately to avoid damage when the product is closed.
  • If the weatherseals are broken or damages and draughts are felt around the product, ensure prompt replacement by contacting your insurer*.


To attain optimum performance, it is essential that all hardware is lubricated every 6-12 months.

Silicone Seal

Please not that some discolouration of the silicone seal is a natural occurance and cannot be avoided.


When installed, brasswork is fully protected with lacquer. In time and through normal wear and tear, this lacquer may peel or become tarnished. NOTE: We cannot accept responsibility for this natural occurance.

To refurbish your brasswork carry out the following procedure:

  • You are advised to protect the UPVC surfaces from chemicals etc, by masking off an area around each piece of brasswork.
  • Remove old lacquer with nail polish remover/paint stripper.
  • Clean and polish with a suitable proprietary brass polish.
  • Carefully re-lacquer with a good quality product.


In general climatic conditions water vapour is continually present in the atmosphere. In the home this natural water content is increased by normal living activities that create steam, such as cooking, bathing, washing, boiling a kettle etc.

The water vapour remains undectable while floating in warm air, but upon contact with cold surfaces, windows, mirrors, tiles etc, condensation occurs and the vapour turns to water droplets.

Fitting double glazing does not necessarily solve underlying condensation problems.

Tradition house construction allowed the escape of this water vapour through natural ventilation – open flues of coal fires, air bricks and ill-fitting windows and doors.

The drive to conserve energy and reduce heating costs has led to the sealing of homes, resulting in trapped water vapour and increased problems of condensation.

The advent of more energy-efficient double glazed units can, in certain circumstances, lead to condensation being evident on the OUTSIDE of the window.


Provide natural ventilation whenever possible by:

  • Opening a window.
  • Fitting a ventilator/extraction unit in the kitchen and bathroom.
  • Fitting wall vents to provide air flow.


  • Maintain some permanent heat in the house during cold weather. Marginally increase the temprature in the areas where condensation is a particular problem.
  • If possible, fit radiators under windows to maintain the temperature of the inside pane of your double glazing.