Window Restrictor Stays in Wellington
Glass and Window Repair Wellington supplies and fits window restrictor stays across the city. A restrictor limits how far a sash can open, usually to around 100mm, so a window still ventilates a room but nobody can get through it. We fit them to aluminium and timber joinery, and to sliding windows and doors.
- Limits opening without blocking ventilation
- Suits upper floor bedrooms and apartments
- Releasable types available for escape routes
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Wellington has a lot of housing where this matters. Hill suburbs mean upper floor bedrooms sit above steep drops, and the apartment stock through Te Aro and the central city is largely multi storey. On top of that, the Healthy Homes ventilation standard requires openable windows in habitable rooms, so blocking a window shut is not an option for a landlord. A restrictor gives you both.
Ventilation and safety at the same time
The Healthy Homes ventilation standard requires each habitable room to have openable windows, doors or skylights totalling at least 5 percent of the floor area, able to be fixed in the open position. Screwing a window shut breaches that.
A restrictor keeps the window openable and fixable while limiting the gap, so the property stays compliant and the room stays safe.
Releasable versus fixed
Fixed restrictors cannot be released without a tool. Releasable ones open with a key or a concealed catch so the window can still serve as an escape route in a fire. Which one is appropriate depends on the room and whether there is another way out.
We will talk that through on site instead of fitting one type everywhere.
Retrofitting to existing joinery
Most aluminium suites take a restrictor stay in place of, or alongside, the existing friction stay. Timber sashes usually take a cable restrictor or a sash stop. Neither is visible when the window is closed.
Choosing the right restrictor
Fixed, key releasable and cable
Fixed restrictors cannot be released without a tool and suit windows that are never an escape route. Key releasable ones open with a key or a concealed catch. Cable restrictors suit timber sashes where there is no aluminium section to fix a stay into.
Which one is right depends on the room, whether there is another way out, and who uses it. We talk that through on site rather than fitting one type everywhere.
Fitting without marking the joinery
On aluminium the restrictor usually replaces or sits alongside the existing friction stay, so it uses fixings that are already there. On timber we fit a sash stop or a cable anchor into the frame where it is hidden by the sash when closed.
Either way nothing is visible with the window shut, which matters on a character home.
Window Restrictor Stays at a glance
- Typical limit
- Around 100mm of opening
- Types
- Restrictor stays, cable restrictors, sash stops, key releasable
- Suits
- Upper floor bedrooms, apartments, rentals, homes with young children
- Compliance
- Keeps openable area available for the Healthy Homes ventilation standard
- Material
- Stainless steel, 316 grade near the coast
Window Restrictor Stays in Wellington: common questions
Will a restrictor stop my rental meeting the ventilation standard?
No. The window still opens and can be fixed open, which is what the standard requires. Screwing a window permanently shut is what breaches it.
Can restrictors be released in a fire?
Releasable types can, with a key or concealed catch. We recommend those where the window is a designated escape route.
Do they work on sliding windows?
Yes. Sliding windows and doors take a track restrictor or a limiter that stops the panel at a set gap.
Recent Wellington jobs
Got three quotes for retrofitting the front of the house. Only ones who measured every opening and explained why the north facing rooms needed different glass. Eleven windows over two days, and the road noise dropped more than I expected.
Landlord here. Had four properties assessed for the Healthy Homes ventilation rule and two needed openable sashes freed up rather than new joinery, which saved me a fortune. Straight answers, written report, no upselling.
Ranch slider had been jamming for years and we assumed it needed replacing. Turned out to be rollers and a bent track. Two hours, a fraction of the price we were braced for.
Fogged unit in the lounge, measured on the Tuesday and in by the following Monday. Fair price and they cleaned up after themselves.
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