- Postcode district
- BT71
- Survey
- Free, area covered by arrangement
- Typical lead time
- Typically 4–6 weeks for aluminium and 2–4 weeks for uPVC after survey sign-off
- Guide price
- From £3,295 inc VAT
- Nearby
- Coalisland, Cookstown, Armagh
- Building rules
- Northern Ireland
What replacement sliding doors offer homes in Dungannon
These are the points a surveyor will go through with you when you choose replacement sliding doors for a home in Dungannon:
If the existing opening in your Dungannon home is sound and a sensible size, simply replacing the door gives the biggest improvement for the least disruption.
Before booking a survey for a Dungannon flat, check your lease or title deeds and speak to the managing agent, factor or other owners, because doors in flats may need consent that houses do not.
- Most two-panel replacements are completed in a single day, so the house is secure again by the evening without the room being out of use for long.
- Removal and disposal of your old patio door is included in our guide prices, so there is no separate skip or tip run to organise.
- Slimmer modern frames often give a larger area of glass within the same opening, letting more daylight into the room than the old door did.
Sunlight, glass and orientation in Dungannon
Sun angles matter for big glazed doors. Around Dungannon, midday sun reaches about 59° in summer and drops to about 12° in winter. That low winter sun is free heat through south-facing glass; high summer sun is easier to shade with a roof overhang, and solar-control glass helps where there is none.
Guide prices for replacement sliding doors in Dungannon
The table shows guide prices for common sizes, supplied and fitted, including VAT. Your exact price is fixed in a written quote once the opening in your Dungannon home has been measured.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 2.1 m | 2 panels | £3,995–£4,895 |
| 3.6 m | 3 panels | £5,595–£6,895 |
| 6.0 m | 4 panels | £8,295–£10,095 |
See every size on the replacement sliding doors page or try the guide price tool.
From survey to fitted door in Dungannon
Surveys in the BT71 district are booked at a time that suits you. After you approve the quote, manufacture is typically 4–6 weeks for aluminium and 2–4 weeks for uPVC after survey sign-off; on fitting day the old door comes out, the new frame is set level and sealed, and the panels are adjusted so they glide properly. Fitting usually takes 1 day for a straight two-panel swap; 1–2 days for larger doors. Dungannon is in an area we cover by arrangement: the survey is still free, and survey dates, delivery and any travel cost for delivery and fitting are confirmed in your quote before you order.
Rules for replacement sliding doors in Northern Ireland
In Northern Ireland, the Building Regulations (Northern Ireland) apply through your district council's building control service, with energy guidance in Technical Booklet F1. Work in Northern Ireland is by arrangement, and we confirm the approval route for your property at survey.
Choosing the specification
- Slimline upgrade. Narrow interlocks for the maximum glass area the existing opening allows.
- Upgraded glass. Triple, laminated, solar-control or obscure glass to suit the elevation.
- Lower threshold. A reduced-height sill where floor and outside levels allow, with suitable drainage.
Questions about replacement sliding doors in Dungannon
Do you fit replacement sliding doors in Dungannon?
Yes, by arrangement. Dungannon is in an area we cover by arrangement: the survey is still free, and survey dates, delivery and any travel cost for delivery and fitting are confirmed in your quote before you order.
Can I get a bigger door in the same opening?
You can usually get more glass in the same opening, because modern frames are slimmer, but the overall door size stays roughly the same as the old one. Making the door wider or taller means widening the opening, which is structural work with a steel beam, calculations and a Building Regulations application. Our new openings page covers that.
What happens to my old patio door?
We remove your old patio door and take it away for disposal as part of the job, and that is included in our guide prices, so there is nothing for you to arrange. If you would rather keep the old door, for example for a shed or greenhouse project, tell us before the fitting day and we will leave it safely on site.
Will the new door have a lower threshold?
A lower threshold may be possible on a replacement, depending on the floor level inside, the height of the patio or ground outside and how the opening was built. Low thresholds are typically 15–25 mm. A flush threshold needs a drainage channel outside so rain cannot run in. We check levels at survey and tell you what is realistic.

