Our range of Triple glazed windows & doors
Established in 1982, KJM is an award-winning expert in high quality double and triple glazing installations. Based in Andover, we cover a wide area including Newbury, its surrounds, and beyond. Our sales team are non-commissioned so our customers enjoy a low-pressure purchase process when searching for their new triple glazing.
At a Glance
We work with a broad range of triple glazing ranges in uPVC, Aluminium and Hardwood materials. This enables us to fulfil projects involving doors, windows, roofs and conservatories. We provide and install products for private and trade clients. As we are so long-established, we have developed partnerships with many local builders and contractors.
The Quotation Process
Our free and no obligation quotation process is bespoke to our customer’s needs. So when we visit your property, we will advise you of your options taking into account all your local factors. Primarily this includes building style, light and noise levels. We strive to be respectful to our clients. This is why we keep our prices low and avoid illusionary discounts.
Triple Glazing Options
The triple glazed units that we provide are 44mm units which offer over 40% improved thermal efficiency when compared to ‘A’ rated double glazed windows. These units have also displayed more than 25% better insulation performance than 36mm units provided by alternative suppliers. Some product lines require a slimmer triple glazed unit. In these circumstances, our 28mm tripled glazed unit is a more expensive, but effective solution. This unit uses Krypton gas to fill the gaps in between glazing rather than Argon gas which is standard in our 44mm sealed units.
How it works?
Clearly, the gas which fills the gaps in between glass is important. The triple glazing of old would be filled with either air or dry nitrogen prior to sealing. Argon is a slower moving gas which minimises convection currents within the gap and reduces heat conduction through the gas. In this way, the transfer of heat between the inside and outside of the panes is decreased.
Around the glass are Swisspacer bars. Alternatively known as ‘warm edge spacers’, these features ensure that less heat is conducted at the edge of the glass. This reduces condensation and improves insulation performance.
Our products feature a soft coat low emissivity glass. The soft coating offers better light transmission, enhanced clarity and improved diffusion of light.
Download our free Triple Glazing brochure.
Our Green Credentials
The superior energy efficiency of our triple glazing units carries huge benefits both to the environment and to your ongoing energy bills. What else are we doing though? We are proud suppliers of the Veka Infinity Window & Door profile system. The core of these casements is manufactured with recycled material. Another line, Profile 22 uses recycled composite material (RCM) for its internal reinforcements. On installation, we separate and recycle removed waste materials, including uPVC, aluminium, paper and card packaging and glass panes.
Peace of Mind
Through all these commitments, we hope to offer environmental peace of mind here are KJM. Not only this, though, we strive to provide our customers with personal peace of mind too. We are approved by Hampshire Trading Standards and Which? reports and offer a full 10-year warranty on products.
Improved security over double glazed windows, due to the extra pane of toughened glass. Internally glazed windows offer added security and prevents the removal of the glass from the outside.
There is no major gain having triple glazing with three equal thicknesses of glass. The best solution would be with a thicker centre pane, please enquire for further information.
44mm sealed units filled with two 16mm cavities of argon gas. Argon gas is heavier than air, so acts as an insulator
Warm edge spacer bars made from a composite material to stop the cold-bridge across the unit.
Two coatings of low-emissivity glass (Low E). This is a microscopically thin coating that stops the heat from your house going outside.
Triple Glazing Prices Newbury
We can supply both trade and offer supply only costs for our triple glazing range. We also are in partnership with local builders, who can tackle extensions and new-build projects. At KJM we don’t just sell “White PVC Windows” we offer a huge range including the handcrafted Beaumont & Residence 9 PVCu systems, Deceuninck Style-Line 70mm fully sculptured and bevelled windows from Veka & Profile 22 complete the PVC line-up. We also offer a full range of conservatories, doors including composite front doors and bi-folding doors.
Frequently Asked Questions
Will installing triple glazed windows cause overheating in the summer?
This is a common misconception, the level of solar gain is actually less than a double glazed unit due to the extra pane of glass and cavity. The overall energy balance of a triple glazed window will ensure that more heat is retained in the room in the colder months of the year.
This can cause a small problem in the winter months as the external pane of glass is not being heated from the house and this will result in external condensation in certain conditions. This will generally happen on a cold, clear and still winter’s nights and will normally clear quickly in the morning.
Are triple glazed windows worth it?
The cost of triple glazing is obviously more than double glazing. The u-value of a triple glazed window with the correct spacing between the panes of glass and argon gas offers up to a 50% improvement over A rated double glazing. If you are replacing your windows, building a new house or an extension then it is certainly worth considering.
The truth is it would take many years to repay the additional cost, but it will help save on your energy bills immediately and some would argue it would make your house more attractive to potential buyers if you decided to sell it. Houses in the UK have to have an energy performance certificate when being put up for sale.
How much do triple glazed windows cost?
As a rough guide triple glazing will cost on average around £150 extra per window over double glazing, based on one square metre of glass. This would be the average window size of a 1.2m square (4ft) UK window as it would have around one square metre of glass.
Are triple glazed windows better than double glazing?
Good quality triple glazed windows are up to 50% more thermally efficient than ‘A’ rated double glazed windows, so you would see an immediate effect on energy savings. If you home has older double glazed windows or even single glazing then the improvement would be huge, as an example the u-value of a single pane of glass is 5.5, the u-value of a 44mm triple glazed unit is around 0.5. This would considerably reduce condensation on the internal face of the glass and cold spots around the window and in your room.
What do triple glazed windows do?
For a long time windows in the UK were single glazed, in the 1980’s double glazing really took off. Back in the day the best double glazed window had a u-value of around 3 w/m²k. The glass units were made of two panes of normal glass with a metal spacer holding them apart. Triple glazed windows have changed the thermal performance hugely.
Today, the units are manufactured with three panes of glass, two of them will have a low-e coating, the gaps between the panes are filled with an inert gas commonly argon. Finally the triple glazed unit will have two warm edge spacers that stop cold transferring through the edge of the glass. This will normally reduce the overall whole window u-value down to less than 1 w/m²k. Do remember all triple glazing is not the same, generally with argon filled units, the gaps between the panes should be 16mm, any smaller and the efficiency will be less.
Are smaller triple glazed units available?
We can offer 28mm triple glazed units (2 x 8mm gaps) filled with krypton gas and 3 layers of 4mm glass, which achieves a centre pane U-value of 0.50 W/m2K. We offer this smaller unit to accommodate for the smaller units that we offer and for our customers who prefer the bead detail on the 28mm system. Krypton gas works better on smaller air-gaps than argon, but is MUCH more expensive than argon filled units. Either way KJM can provide a triple glazed unit to suit your requirements.