Correct maintenance of our quality timber products will ensure they give years of trouble free service and operation.

We hope the following installation and maintenance suggestions are of assistance.

Storage and Installation:

Frames should be stored off the ground in a dry environment and fitted as soon as possible following delivery. Fixing with straps is recommended and care must be taken to ensure the surface paint is not damaged.

Windows that have received a base coat only should have additional coats applied as soon as possible, and certainly within three months of delivery. Care should be taken to ensure that the joinery is not allowed to get wet.

Factory finished windows should be stored upright and installed with the wrapping in tact to protect against dirt and debris. Should damage to the surface occur, the area should be "made good" by using a two part filler, and repainted using Arch Coatings restoring paint.


These must be kept free of contamination, especially paint, as this will seriously impair the draught seal properties. Remove any paint with a cloth soaked in white spirit.

All that is required to maintain weatherseals, is to clean them with warm soapy water to remove any build-up of dirt and grease. Any worn or torn seals should be eased out of the retaining slot and replaced with fresh seals, which can be obtained from Benlowe Windows.

Trickle Ventilators:

Ensure the operating plate is kept clean and free of paint. The directional plate can be positioned to alleviate draughts but still allowing air circulation.

From time to time, removal of the ventilator and cleaning-out the vent slot will prove beneficial. This is achieved by prising off the end caps to reveal the retaining screws. The vent can then be prized out of the housing after the removal of the screws. Re-fit in reverse order.


Standard "butt" hinges will give lifelong service with very little maintenance. An occasional spray of silicone-based oil will ensure trouble free operation.

"Reflex" hinges (scissor type) do benefit from regular cleaning and removal of debris from the metal scissor-action operating arms. A small amount of silicone-based oil will ensure smooth operation.

The friction (restraining ability) of the hinge can be adjusted by turning the brass grub screw, located within the hinge. Adjust by a half turn only as over-tightening will damage the hinge.

Handles and Restrictor Stays:

These items require very little maintenance other than occasional cleaning with warm soapy water. Do NOT use abrasive cleaning agents, as this will remove the protective coating. A tiny drop of silicone-based oil occasionally applied to the spindle, will keep the operation and security benefits unimpaired.

Espagnolette Bolt Locks:

Ensure all paint and debris is removed and apply a liberal coating of silicone-based oil within the mechanism. Ensure that "keeps" are kept tight as this will result in difficulty being experienced in operating the lever.

Sliding Sash Balances:

If the sashes are not closing correctly or do not stay in the closed or part open position, this indicates that the spring balances require re-tensioning. This may require a special tool or a flexible screwdriver, depending on the type of balance installed.

Insert the key/screwdriver into the ratchet fitting (located under each sash at the bottom corner, between the sash and frame). Turn the ratchet 2 clicks at a time ONLY. Try the sashes before further tensioning. OVER-TIGHTENING WILL RESULT IN DAMAGE TO THE SPRINGS at considerable replacement cost.

A small amount of silicone-based oil sprayed into the top of the spring, will ensure trouble free operation.

Benlowe products come complete with extensive guarantees:

  • 30-years against fungal attack.
  • 10-years on material and workmanship.
  • 10-years on factory glazing.
  • 10-years on factory painting (the guarantee is against the need to completely redecorate, but any localised damage must be made good).
  • 5-years on factory staining (the guarantee is against the need to completely redecorate, but any localised damage must be made good).
  • 25-years on aluminium cladding.

Maintenance of Sliding Sash Windows

These windows have been inspected for quality and fully checked for smooth, correct operation prior to leaving our factory. In order to ensure they remain in good working condition and give trouble-free performance, the following maintenance recommendations must be observed.


Care must be taken at all times to ensure that no paint comes into contact with the weatherseals or sliding track and channels. To achieve this, it is necessary that painting is carried out in two separate operations, so as to avoid closing any part of the window whilst still wet against the weatherseals.

Operation and Adjustment:

The spiral balances are pre-tensioned at our works allowing for a smooth operation when glazed. Final adjustment, if required, can be carried out as follows:

Each pair of balances may be adjusted by inserting either a special key or a flat screwdriver into the ratchet fitting at the bottom of each balance (located at the corner and bottom of each sash). Turn the ratchet as described below, two clicks only at a time. Do NOT over tighten as this will result in damage to the balance and operation of the window.

Eye Type:

At the bottom of this type of balance is an "eye". By inserting the special key, pulling down and twisting in an anti-clockwise direction, tension is increased.

Slot Type:

There is at the bottom of this type of balance, a slot into which you insert a screwdriver. Turning in an anti-clockwise direction will increase the tension.


Depending on the location and frequency of use, lubrication of the internal mechanism of the spring balances is recommended. A few drops of light oil spray, applied via the top end of the balance tube, will always improve the life and operation of the balances.