Cleaning and Maintenance Instructions

The aluminium windows will keep their own performances of air-water tightness and beauty of surfaces, In order to keep these qualities, the exposed profiles and surfaces must be subject to regular cleaning and maintenance cleaning and maintenance instructions are given below.

The frequency of intervention depends on the building surrounding and must be higher when located near the coast, in industrial and highly polluted areas. The cleaning of aluminium profiles is very simple: it is enough to pass carefully over them with a soft sponge moistened with the proper detergent. The detergent must not be abrasive, not with a basis of ammonia, not with a basis of chlorine (ex: bleach) or alkaline or acid products.

The maintenance of the profiles for opening frames is often combined with the glass cleaning; We deeply recommend to clean the surfaces when they are not exposed to heat sources nor to the rays of the sun.


The aluminium anodised and painted cannot be in contact with damp mortar or chalk. Then, during the masonry work, we always recommend to protect the opening and sash frames in order to avoid any possible damaging.

  • Aggressive alkaline chemical products (ex. ammonia).
  • Strong acids
  • Hypochlorite (ex. bleach).
  • Oxidizing products.
  • Nitro-acetone solvents.


Water at max 30°C temperature and specific detergent for the cleaning of the aluminium parts of doors and windows anodised or painted.


  • 1. Cleaning Inside the Window
    In order to guarantee a correct working, your window should be inspected at least once a year to check that no residue or extraneous body are in the grooves and in the slides of the frame itself. This operation prevents the eventual obstruction of the drainage holes, enabling the window to keep its performances. –
    • Surf Water – for routine cleaning
    • Turpentine Oil – once in 6 months
    • Wax Polish – for color and shine
  • 2. Cleaning of the Drainage Holes
    Clear away the dust and dirt with a vacuum cleaner and, should the drainage holes be obstructed, remove the occlusion with the help of a tool similar to a rod.
  • 3. Maintenance of the Accessories
    Apart from cleaning the profiles, it is necessary to provide for the maintenance of the weather gaskets and of the accessories and repair, if necessary, the damaged parts. All opening frames and relevant lock points must be subject to maintenance, using a silicone or Teflon spray, and any wearing level must be checked.
  • 4. Spray for Hardware
    The opening parts and all lock points must be lubricated with oil or anti-acid grease. The spray leaves a protective film over the treated parts, improving the movement and attenuating any possible troublesome noise.
  • 5. Product for Gasket
    Cleaning the gaskets by a cloth damped with the indicated product at least twice a year, will enable the gaskets to keep their correct elasticity.

In case of damages due to negligence or insufficient maintenance, any possibility to appeal to the warrantee is excluded. The utilisation of a non-recommended product releases ALCOI from the responsibility of any damage caused to the frames.

Ventilation Of Windows

The lack of air exchange between indoor and outdoor can cause the increase of the relative humidity ratio of which, vice-versa, in order to limit the condensation, must be kept at a normal level, operating as per figures A and B.

Other possible sources of humidity in the houses could be water boiling, food cooking, washing, shower, indoor plants, number of persons in the rooms, etc.

The humid air deposits itself on the windows and non-porous materials (ex: glass) in form of condensation and on the walls in form of eventual moulds and stagnation stains. The condensation starts to form when the temperature of the walls in the room is lower than the temperature called “temperature of dew”.

The temperature of dew is determined by the two following factors:

  1. Relative humidity ratio inside the rooms
  2. Temperature inside the rooms

The ventilation of the rooms brings the air humidity to regular values.

Frost vs. Condensation

Frost varies from condensation in a few ways. Perhaps the biggest difference is that condensation can occur regardless of whether or not the window frame is insulated whereas frost seldom occurs with insulated frames. In new construction it is common for building materials to have a “drying out” period for at least a year. During this time the humidity levels are high because the building materials are out gassing water vapor. What exacerbates the condensation is that areas nearest the windows are typically the coldest places in the room and may not have enough air circulation. These areas are therefore susceptible to humidity condensing on the frames and/or glass. Most can relate to this condition as it relates to car windshields. Drivers battle condensation (inside and outside) until the surface temperature changes, and/or more air moving across the surface.

Preventive Design

Though metal windows and doors may never perfectly avoid frost and/or condensation, builders and architects can minimize the affects. Below are steps that you can take to reduce the conditions that cause condensation and/or frost.

Increase Air Temperature
  • Raise the temperature inside the house.
  • Insulate under the seat and over the head of bay, bow, and garden windows to keep the window area warmer. Air circulation around these types of windows is usually more restricted, and since they hang away from the insulted house wall, could be a few degrees cooler in temperature.
  • Direct warm-air supply ducts toward windows or use a fan for increased air circulation at windows.
  • Radiant heating in walls and floors.
Increase Ventilation
  • Open windows after steam-producing activities such as showering, laundry, and cooking. This allows the stale, humid air to escape, and fresh dry air to enter.
  • Run kitchen, bathroom, and other fans more frequently and for longer durations.
  • Improve or add a ventilation system in your home. Ensure that everything vents to the outside.
  • Open blinds and drapes. Heavy window coverings restrict the flow of warm air over the interior glass surface.
  • Operate ceiling fans to improve air circulation.
Reduce Moisture Source
  • Stop or severely limit the use of humidifiers, or adjust them to an appropriate setting.
  • Run a dehumidifier if needed.
  • Limit plants, aquariums, and pets.
  • Have your gas appliances checked. Malfunctioning gas appliances can deliver excessive water vapor into the air along with more dangerous contaminants. Be sure you have a carbon monoxide alarm.
  • Store firewood outside.
  • Don’t air dry clothes indoors.
  • Correct grading and drainage problems around the exterior of your home.