Secondary glazing noise and sound insulation properties





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North London Secondary Glazing
Unit 4
Noke Lane Business Centre
Noke Lane
St. Albans, Herts



Secondary glazing noise and sound insulation properties



Secondary Glazing Products


Find out more information about the different types of secondary glazing we can provide



Fly Screens



Most of our secondary windows can be fitted with fly-screen mesh instead of glass. Many of the secondary windows can be supplied with interchangeable inserts - with flyscreens for summer pest & insect control - and secondary glazed for winter thermal insulation.


The glass fibre fly-screen mesh is translucent, providing excellent visibility and ventilation, as well as being both corrosion and combustion resistant.Woven from glass fibre yarn, the mesh has a protective vinyl coating that is resistant to staining and easy to clean.The standard fly screen mesh colour is a very light grey and once fitted it is virtually invisible. Standard gauge is 18 x 16 - 18 threads in one direction and 16 in the other - per square inch.



fly screen glazing hinge fly screen roller fly screen fly screen panels

Click to enlarge





Vertical sliding secondary glazing units can be used for a number of different applications.



  • fixed inserts
  • turnbuckle secured inserts
  • hinged inserts
  • standard and slimline lift outs



  • horizontal sliders
  • hinged units - standard range
  • Heritage hinged units
  • vertical sliders - standard units only


Sizes, Guidance & Restrictions


Our translucent light grey woven glass fibre 18 x 16 gauge mesh fly screens are custom made to the shape of your secondary glazing.



Contact the NLSG team to find out how we can help you.