‘A‘ Rated Rehau Upvc Window

To achieve an A Rating with our profile the outer frame would be 70mm to 72mm.

The Spec of glass would be;

4mm Pilkington KS  /20mm Thermobar, Argon Filled/ 4mm Low Iron

             

Pilkington KS - Is one of the most energy efficient glass products available today.

Thermobar Is a high performance engineering plastic with a gas diffusion barrier to minimise gas loss from the edge of the unit. The composition of Thermobar ensures that the unit is stucturally sound while helping to reduce the heat loss at the edge of the glazing unit.

Argon Filling - Is a lesser dense gas than air and enables us to achieve higher thermal performance levels with our double glazed units.

Low Iron - Is an extra clear glass which is valued for its attractive appearance and optical qualities. The low iron content produces a higher light transmittance and a reduced green tint inherent of other glasses.

 

Unit Make up

Now for the bit that other company’s won’t tell you

15mm Add-ons
45mm Add-ons

In some cases when a frame is installed, there has to be add-ons added to the frame
(Please note the diagrams above)

This is due to the plaster line on the inside of the building being a smaller measurement than the outside. As when you measure up for a new frame you always measure the outside & inside.

Because all our frames are internally beaded for added security, we must be able to have full access to the beads when fitting or removal of the glass.

The only drawback to this is that the frames viewed from outside with add-ons on, especially the 45mm add- ons can look unsightly to some people & this is what other company’s won’t tell you until they want their money. Here at Liversidge Windows we believe in telling the customer everything there is to know and all possible pitfalls, if any. We will then discuss all available options to help work around any such matters that may arise.

 

In some cases when a frame is installed, there has to be add-ons added to the frame
(Please note the diagrams above)

 

 

This is due to the plaster line on the inside of the building being a smaller measurement than the outside. As when you measure up for a new frame you always measure the outside & inside.

Because all our frames are internally beaded for added security, we must be able to have full access to the beads when fitting or removal of the glass.

The only drawback to this is that the frames viewed from outside with add-ons on, especially the 45mm add- ons can look unsightly to some people & this is what other company’s won’t tell you until they want their money. Here at Liversidge Windows we believe in telling the customer everything there is to know and all possible pitfalls, if any. We will then discuss all available options to help work around any such matters that may arise.

‘C‘ Rated Rehau Upvc Window

Rehau Total70 window systems make your home more attractive and comfortable, and, if you choose the right style for your property, they can also add great value.

To achieve a C Rating with our profile we will use a 70mm Frame section, the benefits of this are;

  • 70 mm depth allows for the replacement of 3" timber frames with less trimming up.
  • Triple chambered profiles ensure good thermal insulation.
  • Security enhanced and approved to BS7950.
  • Document L compliant.
  • Larger reinforcement chambers allow for additional strength/rigidity when necessary.
  • Hardware is fixed into steel to improve the technical performance and security of the window.

       

The spec of glass is – 4mm Pilkington ‘KS’ /20mm Spacer Bar, Argon Filled/ 4mm Low Iron

Pilkington ‘KS’ - Is a low emissivity glass which allows free heat from the sun to pass through and bounces back the heat from your radiators, making it easier & more cost effective to keep your house warm. It is also one of the most energy efficient glass products available today.

Argon Filling - Is a lesser dense gas than air and enables us to achieve higher thermal performance levels with our double glazed units.

Aluminium Bar - Is a standard spacer bar used by all glass manufactureres

Low Iron - gives High clarity with a crystal clear appearance; it has a very high light
Transmittance of 92% and has a high solar transmittance for solar energy.
Low Iron glass was originally used in Museum’s due to its ultra clear appearance which improved the viewing of artefacts significantly. It is now being used by Aquarium manufacturers worldwide to increase the viewing aspect of beautiful Marine/Tropical fish 

 
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