Delta Spiral Staircase – Sleek Anthracite Style for Modern Indoor Spaces

Elevate your interior space with the Delta Spiral Staircase – a premium design from DOLLE, engineered for elegance, comfort, and long-term durability. Finished in rich anthracite grey, this space-saving staircase brings striking modern style to any home, apartment, or mezzanine conversion.

The Delta staircase includes 11 wide treads plus a triangular landing platform, allowing a maximum floor-to-floor height of 300cm. Ideal for tight interiors, it’s available in 120cm or 140cm diameters, with adjustable riser heights from 20.4 to 22.5cm.

✅ Key Features – Delta Spiral Staircase

• ✅ Max landing height: 300cm

• ✅ 11 anthracite-finished treads + triangular landing platform

• ✅ Riser height adjustable from 20.4cm to 22.5cm

• ✅ 120cm or 140cm diameter options

• ✅ Powder-coated anthracite grey steel construction (RAL 7016)

• ✅ Aluminium handrail with matching anthracite finish

• ✅ Modern, continuous railing for comfort and security

• ✅ Ideal for square or round ceiling openings

• ✅ Modular design for quick DIY installation

• ✅ Optional matching landing banister (1m sections)

• ✅ Tested to European building standards EN 1991 & EN 1993

• ❌ Not suitable for outdoor use

• ❌ No unsightly external fixings or low-quality materials

• ❌ No timber components – full metal finish for ultra-modern look

🔍 Delta vs. Standard Indoor Spiral Staircases – See the Difference

🏡 Make a Statement Indoors – Stylish, Safe & Compact

The Delta staircase is made for modern living. With its compact footprint and minimalist anthracite finish, it’s perfect for:

• �  Loft conversions & mezzanines

• 🏢 Apartments & urban spaces

• 🎨 Design-led home projects

Only 125cm x 125cm ceiling space is required for the Ø120cm version. The modular system allows for a quick, secure build with no specialist tools required. Spacer rings enable precise riser height alignment to your specific needs.

🚚 Standard UK Delivery – Reliable & Timed

Your staircase kit is carefully prepared and shipped for fast delivery:

• ✅ Free Standard Mainland UK Delivery

• ✅ Delivered in approximately 5–15 working days

• ✅ Flat-packed for secure, damage-free transit

• ✅ All fittings, riser rings, and instructions included

💳 Flexible Payment Options – Trusted & Convenient

Choose a payment method that works for you:

• ✅ Pro Forma Invoicing – ideal for trade, architects, schools & projects

• ✅ Klarna – pay in 3 interest-free instalments or later (subject to status)

• ✅ PayPal – fast and secure checkout

• ✅ Credit & Debit Cards – Visa, Mastercard, American Express

• ✅ Apple Pay – one-tap checkout on Apple devices

🏆 Our Verdict – Contemporary Design, Timeless Quality

The Delta Spiral Staircase is a perfect marriage of minimalist design and long-term reliability. Whether you're creating access to a loft or adding a feature to a modern extension, the Delta delivers on safety, visual impact, and performance – all in one elegant spiral.

👉 Order your Delta Spiral Staircase today from Ladders UK Direct – where innovation meets interior excellence.