Maintenance and Cleaning


Gainsborough suggests cleaning knobs, roses and plates every 2 months with a soft, damp cloth.

A solution of soap and water could also be used to remove dirt from knobs, roses and other surfaces, but should not be used on cylinders. Ensure liquid does not enter cylinder at any time.

When cleaning, avoid using acidic or abrasive substances which may contain solvents, i.e cleaning products, as such substances may cause a deterioration of the finish.

Caring for Stainless Steel

Depending on the environment where the product is used, blemishes can appear on stainless steel product. To help prevent this occurring, clean once a month.

Blemishes on satin stainless steel may be removed by rubbing with a suitable stainless cleaner/polish such as Eagle One Never Dull wadding polish.

Ensure rubbing occurs in the same direction as to the grain itself.

Lubrication of Locks and Cylinders


Gainsborough products are manufactured using a quality lubricant for smooth operation.

If the product has been installed in a region subject to extreme climate or subject to a dusty environment, then such conditions may effect the original lubricant and therefore the product may require re-lubrication.

In this case, the working mechanism may be cleaned with a non-corrosive substance and then re-lubricated with a quality silicone or teflon based lubricant.

Do not use lubricant in cylinder (oil or aerosol type).


When key becomes “sticky” in cylinder, you may sprinkle a small amount of graphite onto the key and then insert the key inside cylinder.

Do not use lubricant in cylinder (oil or aerosol type).