Internal silicone sealant should be cleaned on a weekly basis to be kept free of condensation and mildew resulting in mould, especially in bathrooms and kitchens.

If the silicone begins to discolour, apply a regular mould spray to the soiled area, leave overnight then wipe clean in the morning. We recommend trying on a small area first, avoiding contact with your surrounds because the diluted bleach may react, depending on the finish.

External sealants can be cleaned with mild soapy water at the same time as the frames.

During cleaning, ensure that any hand fitted gaskets and weather seals do not become dislodged from their grooves. Should this occur, slide back into position immediately to avoid damage when the windows or doors are closed.

Following the initial installation, the weather seals may require bedding in, causing a slight resistance during operation. The application of a silicone spray will aid the smooth operation and extend their life.