Double Glazing Products Maintenance Advice

How to look after your Cornhill Windows and Doors...

After a heavy shower of rain

You may find some water laying in the bottom of your door and window frames. This is nothing to worry about as this will slowly drain away through the drainage holes in the base.


Upvc Doors - Cornhill Conservatories

Cleaning uPVC Frames

Never use anything abrasive, this will scratch the surface which will trap the dirt. Wash the frames with a mild solution of washing-up liquid. If any stubborn marks remain, lightly rub with the CIF crème cleaner. DO NOT use Cif on every occasion, as this will remove the shine from the uPVC.


To ensure a draught free door, please remember to keep the door in the locked position, with the handle thrown upward at all times. This will achieve a tight fit on to the draught seals.


Twice a year, spray WD40 into all locks and on to any metal contact surfaces around your doors and windows. This will help to keep them operating smoothly.

Download Demonstration of lock operation.


Any type of proprietary glass cleaner is suitable.


Cornhill Conservatories

Conservatory Bases

As with any new building work, a period of ‘drying out’, is necessary. Please ensure maximum air circulation and ventilation during this time to assist the process. To test if a floor is ‘dry’, lay a square of carpet on the floor overnight. If the floor is dry when the carpet is lifted, the process is complete. Never be tempted to use electric or gas fires to speed-up the ‘drying out’, as this is dangerous.

Lead Work

As with any new lead work, when exposed to rain it will start an oxidisation process which shows as white or mottled staining on the lead work. When this process is complete, the lead will be dark grey in colour and will no longer stain. This process will take a few months to complete.

Please look after your new Cornhill products, after buying your house having windows fitted is probably the next biggest investment you will make!...

If you want to improve your home and save money on your bills with beautiful new windows, doors or a conservatory, contact us today!

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