Window lubrication – all materials

You need to regularly lubricate the moving parts to keep the windows operating properly. You should carry out the following lubrication and maintenance checks once a year.

Please use a general light engineering oil with corrosion inhibitors such as 3-in-one® Multi Purpose Oil (available in aerosol can for convenience).

Please do not use solvent-based aerosol sprays such as WD40®. These contain chemicals that attack parts of the window. This can result in weakening and breaking parts of the window and may stop them working. They will also damage decorative finishes.

Casement windows – hinges

Lubricate all pivot points with oil and
wipe away the excess.

Casement windows – locks

Lubricate all moving parts in the window to help them to operate easily.

Tilt and turn windows

The diagram below shows the exact points that need lubricating every year.

A Top arm (the shear)
B Top hinge (shear hinge)
C Keep
D Roller

A Top arm (the shear)

The top arm must be oiled at all pivot points. Spray a small amount of oil on the points shown above.

B Top hinge

These are only fitted to tilt and turn windows that open to 180º. The top hinge (above left) must be oiled at all pivot points.

Spray a small amount of oil on the points shown. Remove the plastic cover if fitted, and spray a small amount of oil onto the top of the hinge (above right).

C Keeps

Lubricate keeps by applying industrial
Vaseline or other suitable grease on the contact areas or leading edges (marked in red above).

D Rollers

To help the smooth running action of the locking mechanism, apply a small amount of oil to each side of the rollers.


Door lubrication

For hinged doors, apply industrial Vaseline or other suitable grease to the hook and latch and striker surfaces (shown below). The lock gearbox has grease applied when it is made, which is designed to lubricate the lock for its life span.

You should keep lock and keep surfaces that you can see clean from dust and dirt by wiping with a clean, damp cloth.

Please do not add oil to the gearbox as this will dissolve the grease and reduce the life span of the lock.

Hook and latch.

Striker surfaces.



PVCu and composite door hinges are made with self-lubricating material and do not need oiling.


Using a Phillips screwdriver, tighten the cylinder screw, which is on the faceplate of the lock.

Sliding patio door pins

Apply a 3-in-1® oil to the mushroom pins and anti-slam pin.

Door closers – Fire doors

Apply a light machine oil such as 3-in-one® oil to the arm knuckle joint and moving parts, this will ensure the mechanisms work freely, allowing the door to close.

Door closers – Fire doors