CLEARLY THE BEST CHOICE FOR GLAZING
Double glazed window and door sealed units replaced. we cover all of Cornwall
Are your windows fine but the glass sealed units in them are misty or broken?
Do you live in Cornwall and do you have any misted or broken double glazed sealed units in your UPVC, aluminum or wood windows or doors? Does that misting or condensation in between the panes of glass stop you enjoying the view out of your windows or doors?
Of course it spoils the appearance of your lovely home but it also devalues it and makes it more difficult to sell should you want to move. Don’t put up with or be embarresed by those horrible foggy windows any longer. We can easily and quickly replace those ugly misty glass units in your existing frames for you and it won’t cost as much as you think
You have two options when purchasing sealed units from Flash Glass.
- Supply and fit – With this option we visit your home, measure the faulty units then supply and fit them. Ten year year guarantee.
- Supply only – (Cheaper Option) With this option you do the measuring and we will deliver the units to your home for you fit them. Five year guarantee because of the self fitting.
If you would like our surveyor to measure the glass units and then you fit them yourself there will be an extra cost to be agreed for that (cost dependent on property location).
Just indicate supply only on the enquiry form

Before

After

- Double glazed
- Triple glazed
- Toughened glass
- Georgian bars
- Leaded lights (diamonds or squares)
- Soft Coat – Low E heat saving glass
- Laminated
- Obscure Pilkington decorative glass
- Stained glass overlay patterns
- We can even offer various colours in Georgian bars and glass spacers (as for details).
We may even be able save any existing stained glass or leaded work in sealed units that you may already have. We may be able to incororate that into a new sealed unit (success with that depends on the original glass water damage and the existing lead artwork condition).
Give your house a facelift. Should you want to incorperate new leadwork, georgian bars, stained glass or obscure glass into the new replacement units we can do that as well.
Save energy and keep warmer. We could even replace your faulty double glazed units for triple glazed sealed units in the existing frames. Another option is to use a Plikington Soft Coat – Low E heat saving glass in the new sealed units so that can save you even more money on your gas or electric heating bills.
Sealed units can be made with energy saving features such as Warm Edge Spacer Bar and Argon Gas Filling to help keep the gas and electric bills down.
Quick Service
Immediate free quotations, measuring, ordering and then fitting by trained glazing engineers..

Years Experience
Under the new British Standards product requirements BS EN 1279 testing for sealed units becomes mandatory to achieve CE compliance.
Frequently Asked Questions (FAQ)
How can I get a quick price
If you call us now on 01209 630604 or complete the enquiry form we will answer your questions immediately. We can arrange for a surveyor to visit your home to calculate a price there and then. If you have a broken sealed unit or just want a price quickly we can even send a surveyor the same day to measure up.
What payment methods do you accept?
We accept most types of credit and debit cards, bank tranfers, cheques (for deposits only) and still cash of course.
For more details please look at our page called How To Pay Us
Payment terms when placing an order
When a consultant visits your home he will measure up and give you a price for the total job. If you decide to go ahead and place an order we will need 50% deposit paid at that stage. When the deposit has been paid we will visit again and measure up for the actual glass manufacturing sizes. Once that is complete we will immediately order the sealed units from the factory. When the sealed units are completed and arrive in our store we will require the remaining 50% balance to be paid. When that has been paid we will call to arrange a convenient day and time for the fitting work to be carried out.
What are your delivery and installation times
Glass sealed unit delivery periods depend on the type of units ordered and the time of year. There can be slight delays around Christmas, Easter and other bank holidays or when there is special glass ordered. Usually the supply and fitting of the sealed units can be completed within a month or so from the order date. When changing standard glass sealed units things can happen even quicker than that. If we are replacing broken glass we can usually get units even quicker. Should it be needed a boarding up service is available at an extra cost should.
Will there be a mess when the fitting is carried out.
The fitting of sealed units is fairly simple and mess free. The fitters will always use dust sheets if required. In some cases the windows are glazed from the outside so very little time is spent inside the house.
How long will the fitting take?
Fitting sealed units into UPVC windows is a fairy quick process so if we are fitting two or three windows it may only take an hour or so. Every case is different with the window sizes and accessibility etc. etc. so some jobs take longer than others. Replacing sealed units in older aluminum windows can take longer, sometimes significantly but we will always tell you the expected fitting time when you place the order.
Do the new sealed units have a guarantee
All sealed units are covered by our own ten year customer guarantee which covers any replacement of faulty failed units and then also the labour cost to replace them. Terms and conditions apply. See our terms of business for exact details. (5 year unit guarantee on trade and supply only customers)
About us
Why you should choose Flash Glass?
If you live in Cornwall we offer a quick, no fuss, reliable service at the right price.
Free speedy measuring service
One of our consultants can be with you on the same day as your enquiry. They will inspect the faulty sealed units, check the sizes and the unit make up (glass types and thickness etc). You will then be given a cost to replace the faulty sealed units with the new ones and dispose of the old glass units. In most cases the actual glass survey can can carried out on the initial visit, should you want to speed things up.
very competative prices
Because of our high volumes and low overheads we are able to offer very competative prices to our clients. With our low prices it makes even more sense to get those faulty sealed units replaced now before the prices rise again.
Fast professional fitting
All the glazing fitters are experienced in installing all types of glazing and sealed units into UPVC, aluminium and wood window and door frames. They are all clean and tidy professional skilled workers and will tidy up any mess before leaving. They will always carry dust sheets to use to protect your home if needed. Any old units and rubbish will be taken away when they leave.
10 Years Warranty on all products
All sealed units are covered by the manufactures five year unit guarantee to us and then our own ten year customer comprehensive warranty. This covers any replacement of faulty units and our own fitters labour cost to replace them. (5 year unit guarantee on trade and supply only customers)

Fully trained & experienced fitters
Speedy no mess fitting service by quality trained staff.
Glass Option Brochures
Contact us For Replacement Sealed Units
The Glass Plant
Our glass supplier is a large family run business with over 30 years experience in the glass industry. They operate a major glass processing and manufacturing plant situated in the South West of England.
The products they produce for us are:-
- Double Glazed Units
- Triple Glazed Units
- Leaded Units
- Georgian Bar Units
- Stained Glass Overlay Units
- Decorative glass
All sealed units are manufactured in their state of the art factory which includes a fully automated glass cutting line, glass tempering furnace, glass cleaning machine and a high speed production line. They also specialises in the processing of architectural flat glass such as balustrades, mirrors, table tops etc.
They are even able to supply us single sheet glass and they also keep a stock of standard size horticultural glass.
This enables them to offer us very competative prices and a quick turnaround service which we then pass on to our customers.
The turnaround time from us placing an order with the plant until the job completion can be as quick as a couple of weeks depending on the makeup of the units. This delivery period may be extended by another week or so with more complicated glass types. Even so, this is still much quicker than most other companies.
Every working day the plant produces hundreds of high quality bespoke sealed units using a wide variety of architectural glass types from the worlds leading manufacturers.
The highly efficient factory production system is optimised to ensure that your requirements are fully met and it enables us to provide an excellent service, top quality sealed units and glass products to all our customers.

What our customers say
David
Truro
“Our back door lock had been broken for months and we had tried many companies to fix it. Flash Glass was the only one we found to come and look at it and repair it for us. They sourced a new lock and sorted it out in 7 days. Very happy bunny,
Mary
Illogan
“We can’t understand now why we had been living with the misty windows so long. We can now see our lovely garden again in all its glory. Very quick and efficient service at a reasonable cost.”
John
St Agnes
Unfortunately whilst mowing the lawn I broke a sealed unit in our rear French doors. I tried various companies to come to board it up and order a new toughened glass sealed unit. Flash Glass was the only one who could come immediately and help us. Good price and well impressed with the service.