Performance

Testing, Thermals and Performance

All Origin products are built to last, and thorough tested, which is why we offer an industry-leading guarantee of up to 20-years on parts.

OW-80 has been designed for maxmised thermal efficiency, and has been engineered with a 35mm polyamide thermal break that features interlocking barriers to minimise airflow through the system. Additionally, a bespoke cavity gasket in the internal chamber between the sash and frame is fitted as standard.

OW-80 is available with Aerogel as an optional upgrade. Aerogel is the most insulating material on the planet.

Slim frames, maximum viable glass coverage, airtight seals, and Aerogel all contribute to ensuring that OW-80 can achieve a highly efficient 0.8 U-Value and an Energy Rating of A++.

Building Regulations*
New Build Limiting Value	1.6 W/m²K
Replacements	1.4 W/m²K
Energy Rating	B or better

Testing

PAS 24:2016 Certified (Document Q Compliant)

BS EN 10088-2 Grade Certified Hinges

Secured by Design accredited

Passed 50,000 operational cycles

Impact tested to 2633Pa (Casement) and 3591Pa (Fixed)

Thermal Performance	Standard	Aerogel
1.2 Centre Pane	1.4 W/m²K	1.3 W/m²K
1.1 Centre Pane	1.4 W/m²K	1.2 W/m²K
1.0 Centre Pane	1.4 W/m²K	1.2 W/m²K
0.9 Centre Pane	1.2 W/m²K	1.1 W/m²K
0.8 Centre Pane	1.2 W/m²K	1.0 W/m²K
0.6 Centre Pane	1.0 W/m²K	-
0.5 Centre Pane	0.9 W/m²K	0.8 W/m²K

Performance
Air Permeability	Class 4, 600Pa
Energy Rating	B - A++
Water Tightness	Class E1500, 1500Pa
Wind Loading	Class B5, 2000Pa
Guarantee	<20-Years on Parts

Egress Application

Approved Document B of the Building Regulations 2010 specifies the following provisions with regards to egress application:

Section 2.8 Emergency egress windows and external doors

Any window provided for emergency egress purposes and any external door provided for escape should comply with the following conditions:

The window should have an unobstructed openable area that is at least 0.33m2 and at least 450mm high and 450mm wide. In practice, this means the opening should be at least 450mm high by 750mm wide or 750mm high and 450mm wide (the route through the window may be at an angle rather than straight through). The bottom of the open-able area should be no more than 1100mm above the floor.
The window or door should enable the person escaping to reach a place free from danger and free from fire. This is a matter for judgement in each case, but, in general, a courtyard or back garden from which there is no exit other than through other buildings would have to be at least as deep as the dwelling house is high to be acceptable.

Note 1. Approved Document K protection from falling, collision and impact specifies a minimum guarding height of 800mm, except in the case of a window in a roof where the bottom of the opening may be 600mm above the floor.

Note 2. Locks (with or without removable keys) and stays may be fitted to egress windows, subject to the stay being fitted with a release catch, which may be child resistant.

Note 3. Windows should be designed such that they will remain in the open position without needing to be held by a person making their escape.

Aerogel: The Ultimate Insulator

Aerogel is a highly porous, synthetic solid derived from silica dioxide gel, where the liquid is replaced with air. Despite its name, aerogel is a dry, rigid, or elastic foam-like material.

History and Applications

Discovered in 1931 by Samuel Kistler, aerogel emerged from a bet to replace liquid in jelly with gas without shrinkage. Since then, it has been used in space exploration, insulation, clothing, tennis rackets, supercapacitors, and cosmetics. Its commercial viability only became feasible in the 21^st Century due to costly production processes.

Why is Aerogel a great insulator?

Composed of 99.8% air, Aerogel limits heat transfer by preventing conduction (since gases are poor heat conductors) and convection (due to its lattice structure). While it is a poor radiative insulator, aluminium window frames can block infrared radiation, enhancing its effectiveness. Aerogel provides 39 times more insulation than fibreglass and withstands extreme temperatures.