Secondary Glazing

Secondary Glazing

secondary windows example

Secondary glazing is a fast and simple solution for homes, offices, schools, business premises, places of worship, and listed buildings. It is the perfect solution for buildings where planning restrictions are enforced and original windows cannot easily be replaced, and it wont compromise the aesthetics of existing windows and frames. (permission subject to listing detail)

Secondary Glazing Examples - Homes

What is secondary Glazing?

Secondary glazing consists of an additional pane of glass which is installed on the inside of an existing single glazed window. Installing secondary glazing improves security, provides noise insulation, and increased thermal efficiency, making it a cost effective way to reduce energy bills.

Our Secondary windows are white as standard, but are also available in standard RAL colour finishes to suit any decor, and can operate as vertically or horizontally opening windows.

Cross-Section of Secondary Glazing Window

Glazing Options available:

4mm Float or Toughened glass or panel / 6mm Float or Toughened glass or panel
6.4mm Laminated glass
6.8mm Laminated acoustic glass

Why Choose secondary glazing?

There are a variety of reasons why you may not want to replace existing windows. The windows may be in a listed building and protected by conservation laws, you may not want to remove beautiful traditional windows, or perhaps the single glazed units are still in good condition.

Our secondary glazing units are made to fit inside your existing windows and are practically invisible from the outside of the property and the slim line frames ensure that they are unobtrusive on the inside.

Examples of Homes with Secondary Glazing Installed

Advantages of secondary glazing:

  • Secondary windows are an inexpensive alternative to double glazing
  • Secondary glazing is perfect when existing windows must be maintained
  • Choices of fixed, hinged, lift out, vertical & horizontal sliding units
  • Secondary windows offer easy and clean installation
  • Secondary glazing improves thermal insulation
  • Secondary windows help eliminate draught
  • Secondary glazing provides better sound proofing than single glazing

Noise pollution reduction

secondary glazing noise reduction graph

Secondary glazing can help to reduce unwanted noise such as traffic where a building is situated on a busy main road. The gap created between the existing single glased window and the installed secondary unit can make a significant noise reduction as the two panes of glass are not coupled together as in double glazed units but act as independent barriers. A minimum gap of 100mm is recommended between the external window pane and the fitted secondary glazing. The bigger the gap left between the two panes, the more effective the noise reduction will become.

To view the heavy duty 60 and 95 series please click link below:

Heavy Duty Secondary Glazing Series

 

 

An Overview of Secondary Glazing Features

Why not give us a call on 0117 9667661 to get your quote or alternatively fill in our online request form on our contact us page and we will get back to you shortly.

Click on the image below to view the Secondary Glazing pdf downloads:

PDF on Secondary Glazing Secondary Glazing Data Sheet

Secondary Glazing Technical data sheet (right)

Secondary Glazing general pdf download (left)

Heavy Duty Series

The Series 95 Vertical Sliding System

The Series 95 Secondary Glazing System is suitable for traditional sash windows and is a vertical sliding unit offering access for ventilation and cleaning. It has a concealed fixings to provide a clean appearance and operates on a pre-tensioned Torso spring balances which fully support a sash window weight up to 65kg in all positions.

Features:

Multi point locking to meet stile
Pre-tensioned Torso spring balances fully support a sash weight up to 65kg in all positions
Anti-Jemmy features
Concealed fixings provide a clean appearance
Glazing options: 10mm to 12mm

Size guidelines

Maximum size: 1600mm (w) x 3600mm (h)
Minimum size: 700mm (w) x 1300mm (h)

heavy duty secondary glazing

The Series 60 Tilt-in Sash System

This is the Series 60 sash system that allows the panels to tilt-in to the room to facilitate cleaning and is particularly suited to treating traditional sash windows with offset meeting styles.

Features:

Adjustable spiral spring balances fully support a sash weight up to 20Kg in all positions
Slim 28mm meeting rail
Spring release catches allow sashes to tilt in
Stainless steel stay arms safely hold the sash in the open position
Friction brake mechanism prevents the sash sliding in the tilt position
Twin seals ensure high sealing efficiency
Concealed fixings provide clean appearance
Glazing options: 4mm to 6.8mm

Size guidelines (subject to glass thickness)

Maximum sash size: 1500mm x 1300mm
Minimum sash size: 500mm x 400mm
Sash height to width ratio should not normally exceed 1:3

Noise pollution reduction

Secondary glazing can help to reduce unwanted noise such as traffic where a building is situated on a busy main road. The gap created between the existing single glased window and the installed secondary unit can make a significant noise reduction as the two panes of glass are not coupled together as in double glazed units but act as independent barriers. A minimum gap of 100mm is recommended between the external window pane and the fitted secondary glazing. The bigger the gap left between the two panes, the more effective the noise reduction will become.

The Series 80 Horizontal Sliding System

The series 80 Secondary Glazing system is suitable for treating large windows including Patio Doors.

Features:

Available with 2 or 3 sliding sashes
Sashes run on heavy duty stainless steel ball races
Moulded pull handles on white or black
Sashes readily removable for maintenance and cleaning
Twin brush seals ensure high sealing efficiency
40mm wide interlock style
Frames may be linked with a colour matched aluminium transom/mullion section
Glazing options: 6mm to 12mm

Size guidelines

Maximum individual sash size: 1500mm (w) x 2600mm (h)
Minimum indivdual sash size: 500mm (w) x 600mm (h)

The Series 41 Hinged Casement System

This heavy duty hinged casement Secondary Glazing system is suitable for large windows and doors when glazed with sealed units. They are available as a single side hung, top hung or bottom hung casement, or a double side hung that provides unrestricted access to the outer door or window and a stable door format particularly suited to sash and case designs.

Features:

Clean flush lines
Single and double leaf forms
Bead options for heavier glass & sealed units
Concealed multi-point locking
Stay are adjustable up to 90°
Twin compression seals
Unrestricted access to french doors
Strong purpose designed colour matched flush hinges
Fixings concealed within frame to provide a clean appearance
Non-locking handles powder painted & colour matched* to the frame

*closest paint match offered for anodised finishes

Size guidelines

Maximum single casement: 1500mm (w) x 2700mm (h)
Minimum single casement: 500mm (w) x 800mm (h)

Maximum double casement: 300mm (w) x 2700mm (h)
Maximum stable door: 1400mm (w) x 3000mm (h)

Area’s we cover

Bristol, Bath, Chippenham, Swindon, Reading, Guildford, Brighton, Eastbourne, Worthing, Portsmouth, Southhampton, Winchester, Basingstoke, Salisbury, Poole, Bournemouth, Weymouth, Yeovil, Glastonbury, Taunton, Weston-Super-Mare, Minehead, Ilfracombe, Barnstable, Bideford, Exeter, Exmouth, Torquay, Plymouth, Cornwall, St Austell, Truro, Falmouth, Newquay, St Ives, Penzance, Newport, Cardiff, Bridgend, Swansea, Monmouth, Gloucester, Hereford, Cheltenham, Worcester, Coventry, Northampton, Bedford, Luton, Milton Keynes, Cambridge, Norwich, Skegness, Birmingham, Shrewsbury, Leicester, Lincoln, Chesterfield, Sheffield, Derby, Nottingham, Chester, Wrexham.