mono single glazing queens house

Table of options: MONO single glazing

The table below will help you select the MONO single-glazing system which best suits your historic property, and there’s also guidance on how to choose the right period glass.

We offer 2 types of single-glazing system:

  • MONO Laminate – a laminate system available in float or period glass
  • MONO RT+ – a single pane of glass (hand-drawn glass only) with a thermal coating.
Rebate size required
U value
Approx weight kg/m2
Safety options Historic glass types available
Toughened Laminated Hand-
MONO Laminate Float glass 9-10
Hand-drawn 8-9
Cylinder 8-9
5×16.5mm 3.6 34dB Float glass 23.75
Hand-drawn 21.25
Cylinder 21.25
N Y* Y Y
MONO RT+ 4mm 5×11.5mm 3.6 10 On request N Y N
Standard single glazing 3-5mm 5×11.5mm 5.6-5.8 N/A 7.5-12.5mm

All toughened MONO RT+ glazing is supplied without Kitemark stamp to keep the visual interference in existing windows as low as possible.

(separate certification of toughening to standard can be provided)

* Safety Pendulum Class 1B1 (BS EN 12600), Safety P1A-P2A (BS EN 356)

Glass options


A word about putty

Please ask about our high-quality non-linseed-based sealant and putty.


Would Thin Double Glazing be a better option?

Histoglass offers a superb range of slimline double-glazing units designed to fit the existing windows in period properties, from pre-Georgian through Victorian to twentieth-century buildings. Find out about Thin Double Glazing.