Secure sliding doors (PAS 24) across South Glamorgan
The right door depends on the opening, the room and the way you use the garden. Here is how secure sliding doors tend to work out in practice:
Whichever door you choose for your South Glamorgan home, pair it with good habits: lock the door, remove the key and keep side gates bolted.
Replacing an old slider in South Glamorgan that has its glass beads on the outside? That is a weakness a modern internally glazed door removes.
- An anti-snap key cylinder is designed to resist the snapping attack used on many older euro cylinders, protecting the lock itself.
- Laminated glass has a tough interlayer that holds the pane together when struck, so even a cracked panel resists an attempt to break through.
- Internally glazed or secured beads mean the glass cannot be removed from the outside, closing off a route that some older doors left open.
Guide prices for secure sliding doors in South Glamorgan
These are guide prices for fitted doors at a standard height, including VAT. They run from an entry-level system to a premium one at the same size; the survey confirms which suits your opening.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.8 m | 2 panels | £3,695–£4,495 |
| 2.1 m | 2 panels | £3,995–£4,895 |
| 4.8 m | 4 panels | £6,995–£8,495 |
| 6.0 m | 4 panels | £8,295–£10,095 |
Every size is on the secure sliding doors page.
Daylight and glass in South Glamorgan
Daylight in South Glamorgan runs from about 7 h 50 min in December to 16 h 38 min in June, with the noon sun at roughly 15° and 62° respectively. Use that to choose your glass: standard low-E double glazing for north and east elevations, and consider solar-control or triple glazing for sunny south and west walls.
Where we fit in South Glamorgan
We cover Cardiff, Barry, Penarth, Cowbridge, Dinas Powys, Llantwit Major and the rest of South Glamorgan.
Approvals in Wales
In Wales, replacement doors are covered by the Building Regulations as applied in Wales, including the Welsh Part L energy requirements and safety glazing rules. Compliance is arranged through a competent person scheme installer or your council's Building Control, and the certificate is kept with your property records.
Questions about secure sliding doors in South Glamorgan
Can you match other doors and windows in my South Glamorgan home?
Usually, yes. Most aluminium and uPVC systems come in standard RAL colours and finishes, and we can quote dual colour where the inside and outside need to differ. Bring photos of existing frames to the survey.
Can I upgrade the locks on my existing sliding door?
Sometimes, but upgrading locks alone does not turn an old door into a tested one. A new anti-snap cylinder or a secondary bolt can improve security on a sound door, and our sliding door repairs page covers lock work. If the panel can be lifted out or the glass removed from outside, replacement is usually the better answer.
Is laminated glass worth it on a sliding door?
Laminated glass is worth considering on ground-floor doors that are hidden from the street, because it stays in one piece when cracked and slows anyone trying to break through. It also reduces some outside noise and filters most UV light. Toughened glass is still a safety glass but shatters into small pieces when broken.
What makes old sliding patio doors insecure?
Older sliding patio doors are often vulnerable because the sliding panel can be lifted off its track, the single-point lock can be forced, the glass beads are on the outside or the cylinder can be snapped. Modern secure sliding doors address each of those weaknesses with anti-lift devices, multipoint locks, internal glazing and anti-snap cylinders.