The correct way to clean

Renolit explains why it is important to correctly clean and maintain film-laminated windows and building components.

Foil laminated windows have existed for over 30 years, and the volume has increased substantially during recent years.

With many people within the industry now likely to be working with laminated profiles on a regular basis, it is essential that installers, fabricators, builders and trades people understand how to clean laminated windows correctly without damaging the surface finish.

Furthermore, there could be significant cost implications if cleaning damage occurs at an installation.

These high-performance films comprise of a multi-layer construction incorporating a transparent polymethyl methacrylate (PMMA) surface layer, which protects against exposure to sunlight and weather conditions.

Some cleaning practices can damage the protective surface layer which may not be immediately noticeable but will reduce the weatherability and colour stability of the film over time.

Films that exhibit this type of damage are not covered by Renolit’s warranty.

Components laminated with Renolit Exofol films can be efficiently cleaned with water and a neutral detergent, soap or diluted washing up liquid with a soft sponge or cloth.
Do not use abrasive cleaners or abrasive sponges or cloths as they will scratch the protective top layer reducing its effectiveness.

Do not use aggressive cleaners containing solvents. These will damage the protective surface layer due to the impact of the contained solvents.

Do not use water-displacing spray – eg, WD40 or silicone spray – to enhance the appearance of the installed component. Such products are likely to contain ingredients that will adversely affect the protective surface layer.

Do not work the surface, dry or mechanically, eg, rotating brushes.

If using a detergent always comply with the instructions. Do not use the detergent if there is any doubt as to its suitability. Only ever use neutral cleaning agents (soaps), washing-up liquids or detergents in non-concentrated form that are specifically appropriate and approved for use on polymethyl methacrylate (PMMA).

Renolit has created a two-sided window hanger with ‘OKAY’ and ‘STOP’ cleaning instructions to be left on a new installation for information to homeowners. They can be ordered free of charge via the Renolit web site.

If water and soap are insufficient, window fabricators/installers can use the Renolit Exofol Professional Cleaner.

If the unfortunate has happened and the window surface is damaged enquire about Renolit’s repair films, which are available in all stock range colours and woodgrain designs. Repair film training courses are also available.