Glass Cleaning

  • Standard ‘clear’ units – The glass used in most double-glazed units can be easily scratched and so we recommend that you remove hand jewellery prior to cleaning. Heavy external grime should be removed with a simple soap/water solution followed by the use of any proprietary household glass cleaner with a soft cloth. Laminated glass or glass containing Georgian bars between the sealed units is cleaned in exactly the same manner.
  • Conservaglass and other ‘true’ self-cleaning glass – Conservaglass is a self-cleaning glass which has been specially designed to remain cleaner for longer than conventional glass. A transparent coating on the external surface of the glass harnesses the power of ultra-violet rays and rain (or water) to break down dirt and grime then wash it clean away. The coating is totally integrated into the surface of the glass and is highly durable. However, as with all coated glass, a certain level of care must be exercised when handling and maintaining Conservaglass.
  • Activation of self-clean – During the week after initial installation the self-cleaning property will be progressively activated, triggered by exposure to UV light. The length of time required to activate the coating by UV rays can vary depending on the season and the orientation of the glass, but is normally within a week. When the glass is wet a small border of water droplets may appear around the perimeter surface of the glass. This is perfectly normal.
  • Labels – If any labels are still attached to the glass carefully peel them off. Care must be exercised when removing the label from the glass to ensure that the special coating is not damaged. Do not use a razor, scraper or wirewool to detach the label.
  • Leaded Glass – Extra care must be taken when cleaning leaded windows so as not to dislodge the lead from the surface of the glass. Warm soapy water applied with a soft cloth is adequate for cleaning leaded glass. PLEASE NOTE THAT EXTERNAL LEAD WILL OXIDISE. THIS IS A NATURAL PHENOMENA AND CANNOT BE AVOIDED.
  • Scratches – Scratches can be removed with jeweller’s rouge or equivalent rubbing compound. (Ask your us for further advice)


Recommended Cleaning Products –

  • Clean water will normally suffice. Standard supermarket mild glass cleaning products can also be used such as Mr Muscle Window Cleaner or Windowlene Wipes for glass/ shiny surfaces.
  • ‘Soft’ water is best for cleaning glass. In hard-water areas a small amount of washing-up liquid can be used to soften water.



Do not use any glass treatment products containing silicones or abrasive particles. Do not use any commercial cleaning products which are intended specifically for cleaning
elements other than glass.

Do not use chemical products: soda, bleach, washing powder, white spirit, etc. Avoid contact with all sharp or abrasive objects including jewellery, buckles, tape measures, razor blades, Stanley knives, scouring pads, steel wool, sandpaper, etc. Never attempt to clean off a specific mark on the surface of Conservaglass without applying water first.


Below is some information to help you carry out the necessary cleaning and maintain your doors.

  • Glass cleaning – When cleaning glass use soap and water to remove any external grime. To produce a better finish you can use a household window cleaner and a soft cloth. Please be aware that any jewellery worn whilst cleaning the doors could scratch the glass if it comes into contact, removing the jewellery or wearing rubber gloves would prevent scratching. Also be careful not to drop cloths as stones or other debris picked up may also scratch the glass. Most scratches in glass can be removed with jeweller’s rouge or an equivalent rubbing compound.
  • UPVC frame cleaning – The faces of UPVC frames should be cleaned every three to four months with warm water and a mild liquid detergent. Clean with non-abrasive detergents as abrasive detergents may damage the frames.
  • UPVC frame cleaning – The faces of UPVC frames should be cleaned every three to four months with warm water and a mild liquid detergent. Clean with non-abrasive detergents as abrasive detergents may damage the frames.
  • Drainage – Eurocell products are produced with a built in drainage system. To ensure this system works efficiently the drainage slots must remain unblocked. To make sure the door is draining correctly remove any dirt or debris. Clear drain holes and check drainage operation by flushing through with water.
  • Weather Seals – Please ensure that you do not dislodge any weather seals. If this occurs immediately return to correct position. If the product is damaged or broken ensure to prompt replacement by contacting your installer.

Vertical Sliding Sash Windows

The Tilt inwards sashes mean they are easily cleaned from the inside. UPVC requires very little maintenance to keep your windows looking as good as new. No painting or preservative treatments
are required. An occasional wipe down with a cloth is all that’s needed to keep the frames looking bright and attractive as the day they were fitted.


  • Service Aluminium recommends professional cleaning companies be employed to perform initial cleaning process.
  • Clean units at times when they are shaded and never when it is colder than 50° Fahrenheit and never clean glass surfaces in extremely hot weather.
  • Never allow caustics (stucco or other concrete materials), corrosives, solvents, or wet packing material to set on the frames or glass as they will permanently damage the surface.
  • Glass surfaces, especially tempered glass, can be permanently damaged or scratched with improper cleaning.
  • All surfaces should always be cleaned with mild soapy water or a mild non-abrasive window washing solution (on the glass) with a soft cloth or sponge.
  • Rinse lightly, but thoroughly with clean water.
  • Dry with a soft cloth to remove all moisture from glass, gaskets, sealant and frames to avoid any deterioration.
  • If the above method does not remove some of the debris from the frames or the glass, isopropyl alcohol and a soft cloth can be used in a circular motion while applying moderate pressure.
  • If the frames still have debris, a “non-abrasive” cleanser such as Soft Scrub can be tried. Always test prior to using in an inconspicuous location.
  • To remove stubborn stickers easily, soak them with water for 5 minutes before attempting to remove them.
  • Make sure all weep slots, drain holes, roller assemblies, and tracks are unclogged as well as the door thresholds and window sills. (Door thresholds and window sills are especially susceptible to surface corrosion if not kept clean.)
  • Hardware components, roller assemblies, and tracks can be lubricated with a wet silicone spray using a straw applicator.
  • Always keep stainless steel parts that are exposed to the elements clean and dry since stainless steel relies on the passive protection of chromium-oxide.
  • Inspect the lock to make sure it pulls the sash tight to the frame. Contact the installer to adjust the lock if the sash does not pull tight to the frame.
  • Origin Windows

    Care & Maintenance

  • Maintenance –
    Your Origin window contains mechanical moving parts that will need to be lubricated – annually these include; hinges; bidirectional lock; handles. Lubricate using a light oil or spray oil and wipe away any excess with non-abrasive cloth once you have finished


The period between maintenance applications will vary and is dependent upon the degree of exposure, elevation, aspect, design of the component, quality of timber and original application. The need for maintenance is indicated by a lightening in colour and reduction in sheen as the coating erodes, and a loss of water repellence. Special attention should be paid to the top of the doors and windows and bottom of doors where glass meets timbers, which are exposed to the weather when in the open position. The cill is exposed to the highest volume of water and door traffic, it should be cleared from all surfaces and not allowed to remain in contact with the product. Please note that the lighter the colour the quicker the UV rays will break down the finish; this may result in more frequent maintenance.

Herts Bifold Doors timber products are coated with Sikkens micro porous coating system and all products referenced below can be purchased from Sikken stockists. You may need to contact Herts Bifold Doors to confirm your colour reference.

If the above mentioned deterioration occurs please maintain the product as follows: If the coating is in a sound condition – clean down with a stiff nylon bristled brush, wash down with mild detergent solution. If surface mould or algal growth is present – use a fungicidal wash (follow manufacturer’s advice on use), rinse with clean water and allow to dry fully. Then apply one coat of Cetol 31 (apply further coats if required).

If there are bare areas the process is slightly different. The bare areas should be sanded to remove weathered timber (dark or grey areas), degreased if required and patch primed/ brought forward using Cetol BL21 PLUS TO MATCH SURROUNDING AREAS. Degrease thoroughly using methylated spirits and a lint – free cloth, frequently changing the face to avoid smearing. Allow to dry fully. Apply one coat of Cetol BL21 plus, allow to dry and then apply two coats of Cetol BL31 in full, flowing and even coats.

All coatings should be worked well into the joints (pay special attention to the tops and bottoms of the doors, bottom of doors where glass meets timber and undersides of cills and exposed end grain). Avoid over brushing and overlapping to eliminate brush marks and achieve a high quality finish. A good quality synthetic bristle brush, specifically designed for use with water-borne products, should be used for application. Ensure the coatings are not brushed out too thinly. Do not apply by cloth. Allow full drying time between coats.

G&N Bespoke Timber Products

  • Mechanism & Hardware – All mechanisms are subject to deterioration from everyday use, and also from environmental attack die to atmospheric and other conditions. Maintenance of mechanisms is even more important in severe environments such as coastal marine localities, and some industrial areas. Even stainless products require maintenance to prevent deterioration in some environments. Minimum maintenance must be followed to validate the warranty.
  • Hangers, pivots and Brackets – Exposed surfaces should first be wiped down with warm soapy water and a soft rag, and then rinsed can before applying new surface protectants. A light spray application of a corrosion preventative such as CRC Marine 66, Innox or WD40, followed by a light wipe with a dry cloth to remove excess is recommended for all hangers, pivots and brackets. Hinges – Wipe down the visible surfaces with warm soapy water and a soft rag, then rinse off and dry by wiping with a clean ray. Application of a thin film of light machine oil or one of the corrosion preventative sprays mentioned above will help to maintain the original lustre of the metal finish and lubricate the moving contact surfaces. Be careful not to get these components on the timberwork itself as they may cause staining. For hinges with an oil-rubbed bronze finish, care should be taken when cleaning or re-applying surface protection. This finish is chosen because of its ability to be selectively removed to reveal the underlying base material, which will show through as a copper or brass colour highlight. It can also be removed unintentionally by vigorous rubbing or abrasion with certain compounds, so maintenance should always be undertaken with the materials softness in mind.
  • In salt water environments apply a protective coating to the stainless steel external ironmongery as specified by the coating manufacturer, e.g.
  • Drop bolts – Sprayed application of a suitable lubricant such as CRC Merine 66, Innox or WD40 to the sliding pin inside the bolt and to the lock cylinder is recommended. A tube attached to the nozzle will help to concentrate the liquid with minimal over spray. There are access holes or slots on all drop bolt products so that this can be done without removing the locks from the doors.
  • Glazing – Check for defects or damaged glass/ signs of moisture inside the cavity.
  • Surface finish – Timber – As timber is a natural product and expands and contracts slightly it is possible for cracks to appear. These are easily repaired and providing the maintenance guide below is followed correctly.
  • Perimeter Silicone Sealant – The glazing, frame, bottom track and other areas are sealed with silicone. The silicone should be inspected for signs of damage and replaced immediately.



  • Condensation occurs when water vapour comes into contact with a cold surface such as glass and the vapour turns to water droplets. Condensation can only ever be minimised and never completely eradicated. Newly constructed conservatories need an initial ‘drying out’ period. Many hundreds of litres of water are used during its construction, i.e. dwarf walls, concrete bases and plasterwork. In winter they will take longer to dry out.
  • Ventilation – Provide natural ventilation to help minimise condensation and maintain a comfortable interior temperature whenever possible by: Opening windows/doors, Ensure trickle vents in the ridge are open at all times – slide the control to open setting, Ensure trickle vents at the eaves (where fitted) are open at all times, Open the roof vent (if fitted). Be sure to consider security when leaving open an easily accessible window or roof vent.
  • Heating – This can also assist with controlling condensation and should be marginally increased in any areas where condensation is a problem. Maintain some heat in the conservatory during cold weather and if possible, place heating appliances under windows to maintain the temperature of the inside pane of the double-glazing. If your conservatory is fitted with a fan unit which fails, always consult a qualified electrician or your installation company.