uPVC Door & Window Restrictors – Safety & Control

Restrictors limit how far a door or window opens. This page brings together our door restrictors and window restrictors.

Door restrictors

  • The uPVC door restrictor stay for French, patio and other uPVC doors. It fits the eurogroove on the door, limits the opening to a preset position or a maximum of 90°, and stops the door swinging back and knocking the sill end caps off. Most French doors need one stay per door.
  • The Home Secure door lever locks (2 pack): self-adhesive locks that stop a lever handle being pushed down, so children and pets can't open internal doors. No drilling.

Fitting a door stay? Our door restrictor stay fitting instructions cover positions, setting the angle and adjusting the friction.

Window restrictors

For cable restrictors, Jackloc restrictors and restricted window hinges, see our window restrictors page, which explains which one you need.

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Frequently Asked Questions

A door restrictor stay limits how far a uPVC, French or patio door swings — typically to about 90 degrees — stopping wind slamming it into walls, furniture or the hinge stops. Adjustable friction lets the door hold position in a breeze.

Yes — restrictor stays are one of the most popular upgrades for outward-opening French doors, which catch the wind badly. Universal handed designs fit left or right doors and mount into the frame and sash face or eurogroove.

Door restrictors manage swing to protect the door and surroundings; window restrictors limit opening to around 100mm for child safety. Different jobs — this collection covers both, so check each product's stated purpose and opening limit.

Most fix with self-tapping screws: the track or arm to the frame head, the slider or pivot to the sash, following the template supplied. Allow 15–20 minutes. On uPVC, fix into the reinforced sections and avoid over-tightening into hollow profile.

That's exactly what they're for — the friction slider absorbs gusts and the end stop prevents the door reaching the wall or wrenching its hinges. If your French doors have already dropped from wind damage, adjust the hinges square before fitting the restrictor.