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++.

Product Performance

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

Performance
PAS 24	2022
Secured By Design	Yes
Air Permeability	Class 4, 600 Pa
Energy Rating	A++ / A / B
Wind Loading	Class BS, 2000 Pa
Water Tightness	Class EISOO, 1500 Pa

Testing

BS EN 10088-2 Grade Certified Hinges

Passed 50,000 lead sash cycles and 10,000 full cycles, equating to 25-years of use.

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

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 made from silica gel, where liquid is replaced with air. Despite the name, it’s dry and rigid or foam-like.

History and Applications

Discovered in 1931 by Samuel Kistler during an experiment to replace jelly’s liquid with gas, aerogel has since been used in space exploration, insulation, clothing, tennis rackets, supercapacitors, and cosmetics. Its commercial use became viable in the 21st century after production costs fell.

Why is Aerogel a Great Insulator?

Made of 99.8% air, aerogel limits heat transfer by blocking conduction and convection. Though it’s a poor radiative insulator, adding aluminium can improve performance. It insulates 39× better than fibreglass and handles extreme temperatures.