Parts and Labour Guarantees

We are pleased to offer a guarantee on all of our sash and case windows and workmanship and this applies to all divisions of our company:

Edinburgh Sash and Case (ESC), Highland Sash and Case (HSC) and Aberdeen Sash and Case (ASC)


In these Conditions of Sale “we”, “ESC”, and “us” and “our” will mean EJ Manufacture Limited and/or its agents. “You” and “yours” will mean any person, firm, company or authority that order or buy the goods. “the goods” will mean any goods or materials sold by us in terms of any individual contract and “the Contract” will mean the contract for the sale or supply of the goods by us to you.

“Supply only” refers to the service whereby ESC provides products for installation by a 3rd party.

These Conditions of Sale govern complete our contract with you unless we have expressly agreed in writing to accept additional or contrary conditions from you.

The Edinburgh Sash And Case Guarantee

The ESC guarantee covers all standard double glazed units, replacement timbers, and ironmongery.


In the event of failure of any piece of window ironmongery supplied by ESC, we will offer a free of charge replacement. Failure is the item breaking beyond use or failing to provide the intended function. This includes pulley wheels, cord clutches, sash eyes, sash fasteners, sash lifts, simplex fittings, height restrictors, window bolts, sash bars, shutter bars, butt hinges, flap hinges and shutter knobs as long as reasonable care has been taken and the fittings have been used for the uses they were designed for.

For materials supplied to third party installers, the item will be returned to ESC for inspection. We will issue a replacement FOC if the item is found to be faulty. The third party is then responsible for re-fitting, and ESC offers no site inspection in this instance.


In the event of new timbers rotting through after installation by ESC these will be replaced FOC within a ten year period from installation. This includes cills, pulley stiles, double glazed upgrades and full replacements as long as standard painting maintenance has been carried out.

Standard maintenance would be repainting every 2-3 years depending on the elevation. As a general guideline, repainting would be required less often on more sheltered elevations, and the higher up the building you go more frequent painting is required. Some dormer windows, south-facing windows, and exposed seaside properties may require annual maintenance.

Repainting of the whole window is often not necessary and the lower areas of your sash windows are always seeing higher levels of wear due to weathering.
We cannot stress highly enough that painting is the key to the longevity of your windows. As soon as signs of paint deterioration are seen we advise contacting us with the details so we can assess whether repainting is required or a simple touching up.
For “supply only” jobs where installation has been carried out by a 3rd party, we can have no liability for claims for this as we have no control over the installation process or the painting service applied to our products.

Double Glazed Units

We offer a 7 year guarantee on all standard double glazed units. Glazing industry “standard” double glazed units are sealed units that have a sightline of approximately 11mm. The unit depth, whether “slimline” or thicker, does not affect the warranty on these units. Neither does the gas type used, be it Argon Gas, Krypton gas or air-filled.

In the unlikely event of a failure due to a manufacturing fault, ESC will replace the units free of charge. This guarantee covers the cost of the units and the labour costs for the installation. Re-decoration of the affected area will only be included within 5 years of the original date of works.

If the units have been supplied by a third party, they may be employed by ESC to carry out remedial works.

Units that have been broken or cracked due to impact, are not covered by this guarantee.

For low sightline units, we offer a five-year guarantee. Our low sightline unit has a perimeter seal of 8mm (including spacer bar) and allows double glazed installations to historic standards. These are currently available in 6mm and 8mm cavity depths.

For windows supplied to third party installers, any failed units must be returned to ESC for inspection. If ESC finds that the unit is faulty, it will be replaced under guarantee and supplied to the installer for installation. ESC will not take any liability for installation costs or redecoration costs associated with this work.

Scratched Units. GGF guidelines (Glass and Glazing Federation). A glass unit is deemed as scratched if the scratch is visible with the naked eye from 3m at 90 degrees to the glass in normal daylight and if you can’t see the scratch then it is deemed acceptable.

General issues

Sash and case windows are not maintenance-free and do require regular maintenance and require to be well looked after and maintained.
When works are complete, the fitters and painters will go over the job with the client, and, at that stage, any issues should be noted on the sign-off sheet or reported to the office in writing within a reasonable timescale.