What do sliding rooflights in Altrincham involve?
Our sliding rooflights service in Altrincham covers box rooflights whose glass lid slides back for walk-out roof access. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Converted mills and warehouses in the North West often have large rooflights or glass roofs that need specialist replacement. In Altrincham, as anywhere, sliding rooflights are the usual choice for staircases that rise to a roof terrace.
Altrincham is around 13 km from Manchester, and we survey and fit throughout that part of Greater Manchester, including the WA14 district.
Specification options
- Integrated balustrade on some ranges
- Rain sensor
- Anthracite, black or RAL frames
- Double or triple glazing
- Box (glazed sides) or flat sliding lid
- Lockable from inside
- Replaces a dormer or stair enclosure on some roofs
What to check first
- Electric units need a dedicated supply and commissioning
- Needs space on the roof for the lid to slide clear
Do you need permission in Altrincham?
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
See our building regulations guide for U-values, glazing limits and self-certification.
Sliding rooflights prices in Altrincham
These are typical supply-and-fit ranges. For an address in Altrincham, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large box slider with electric drive | £11,995 – £20,395 | £9,995 – £16,995 |
| Standard box slider Typical | £8,995 – £13,195 | £7,495 – £10,995 |
| Flat sliding lid | £7,195 – £9,595 | £5,995 – £7,995 |
What happens next
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Neighbouring towns
More we do in Altrincham
Questions about sliding rooflights in Altrincham
How heavy is it?
Box sliders weigh hundreds of kilograms, so delivery may need a crane or lifting gear, and the structure must be checked.
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
Can children open it?
Controls can be key-switched or placed out of reach. We will set the controls up to suit the household.
Will I need planning permission in Altrincham?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof.
Do I need to be at home for the survey in Altrincham?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
