Regulations

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All Histoglass units conform to BS EN 1279, parts 1-6 compliant.

		Thermal Performance U-value in W/m2K	Acoustic Performance db
Requirement England and Wales Building Regulations Part L*	new fittings in extensions	1.8
	replacement fittings in existing dwellings	2.0

Requirement Scotland Building Regulations Part J**	replacement windows	1.8
	replacement glazing	to a standard no worse than existing

Histoglass Thin Double Glazing	D10	1.9 (pdf)
	D11	1.9	34 (pdf)
	D12	1.5 (pdf)
	D13	1.5

Histoglass Layered Insulating Single Glazing

3.4

Single Glazing

5.4

* Source: Approved Document L1B
** Source: Scottish Government - Building Standards Division

for timber frames

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