Skip to content

All Alumasc Skyline Cills & Closers

Discover our range of Alumasc Skyline Cills & Closers, designed to provide a durable, weather-resistant finish around windows and doors. Manufactured in the UK from premium aluminium, these systems offer excellent corrosion resistance, low maintenance and a sleek architectural appearance for residential and commercial projects. At Aluminium Gutters Direct, we stock genuine Alumasc Skyline Cills & Closers with expert advice, competitive prices and fast UK delivery.

Filters

Alumasc Skyline Aluminium Windowsill - 4 Bends x 3 Metre Length - Aluminium Gutters Direct Save up to £8.64 Save £0.00

Alumasc Skyline Aluminium Windowsill - 4 Bends x 3 Metre Length

£64.24 - £86.45
£64.24 - £86.45
£64.24
£57.82 - £77.81
£57.82 - £77.81
£57.82 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£64.24 - £86.45
£64.24 - £86.45
£64.24
£57.82 - £77.81
£57.82 - £77.81
£57.82 ex VAT
Save up to £8.64 Save £0.00
Alumasc Skyline Aluminium Windowsill - 4 Bends x 2 Metre Length - Aluminium Gutters Direct Save up to £6.53 Save £0.00

Alumasc Skyline Aluminium Windowsill - 4 Bends x 2 Metre Length

£50.25 - £65.29
£50.25 - £65.29
£50.25
£45.23 - £58.76
£45.23 - £58.76
£45.23 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£50.25 - £65.29
£50.25 - £65.29
£50.25
£45.23 - £58.76
£45.23 - £58.76
£45.23 ex VAT
Save up to £6.53 Save £0.00
Alumasc Skyline Aluminium Closer Channel - 3 Metre Length - Aluminium Gutters Direct Save up to £6.03 Save £0.00

Alumasc Skyline Aluminium Closer Channel - 3 Metre Length

£37.91 - £60.30
£37.91 - £60.30
£37.91
£34.12 - £54.27
£34.12 - £54.27
£34.12 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£37.91 - £60.30
£37.91 - £60.30
£37.91
£34.12 - £54.27
£34.12 - £54.27
£34.12 ex VAT
Save up to £6.03 Save £0.00
Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 3 Metre Length - Aluminium Gutters Direct Save £3.63 Save £0.00

Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 3 Metre Length

£36.30
£36.30 - £36.30
£36.30
£32.67 ex VAT
£32.67 - £32.67
£32.67 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£36.30
£36.30 - £36.30
£36.30
£32.67 ex VAT
£32.67 - £32.67
£32.67 ex VAT
Save £3.63 Save £0.00
Alumasc Skyline Aluminium Windowsill - 4 Bends x 1 Metre Length - Aluminium Gutters Direct
Save up to £4.39 Save £0.00

Alumasc Skyline Aluminium Windowsill - 4 Bends x 1 Metre Length

£36.11 - £43.88
£36.11 - £43.88
£36.11
£32.50 - £39.49
£32.50 - £39.49
£32.50 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£36.11 - £43.88
£36.11 - £43.88
£36.11
£32.50 - £39.49
£32.50 - £39.49
£32.50 ex VAT
Save up to £4.39 Save £0.00
Alumasc Skyline Aluminium Closer Trim - 3 Bends x 3 Metre Length - Aluminium Gutters Direct
Save up to £5.83 Save £0.00

Alumasc Skyline Aluminium Closer Trim - 3 Bends x 3 Metre Length

£35.89 - £58.29
£35.89 - £58.29
£35.89
£32.30 - £52.46
£32.30 - £52.46
£32.30 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£35.89 - £58.29
£35.89 - £58.29
£35.89
£32.30 - £52.46
£32.30 - £52.46
£32.30 ex VAT
Save up to £5.83 Save £0.00
Alumasc Skyline Closer Channel - 2 Metre Length - Aluminium Gutters Direct
Save up to £4.61 Save £0.00

Alumasc Skyline Closer Channel - 2 Metre Length

£30.96 - £46.11
£30.96 - £46.11
£30.96
£27.86 - £41.50
£27.86 - £41.50
£27.86 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£30.96 - £46.11
£30.96 - £46.11
£30.96
£27.86 - £41.50
£27.86 - £41.50
£27.86 ex VAT
Save up to £4.61 Save £0.00
Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 2 Metre Length - Aluminium Gutters Direct
Save £3.00 Save £0.00

Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 2 Metre Length

£30.04
£30.04 - £30.04
£30.04
£27.04 ex VAT
£27.04 - £27.04
£27.04 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£30.04
£30.04 - £30.04
£30.04
£27.04 ex VAT
£27.04 - £27.04
£27.04 ex VAT
Save £3.00 Save £0.00
Alumasc Skyline Closer Trim - 3 Bends x 2 Metre Length - Aluminium Gutters Direct
Save up to £4.40 Save £0.00

Alumasc Skyline Closer Trim - 3 Bends x 2 Metre Length

£28.88 - £43.99
£28.88 - £43.99
£28.88
£25.99 - £39.59
£25.99 - £39.59
£25.99 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£28.88 - £43.99
£28.88 - £43.99
£28.88
£25.99 - £39.59
£25.99 - £39.59
£25.99 ex VAT
Save up to £4.40 Save £0.00
Alumasc Skyline Closer Channel - 1 Metre Length - Aluminium Gutters Direct
Save up to £3.19 Save £0.00

Alumasc Skyline Closer Channel - 1 Metre Length

£24.14 - £31.86
£24.14 - £31.86
£24.14
£21.73 - £28.67
£21.73 - £28.67
£21.73 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£24.14 - £31.86
£24.14 - £31.86
£24.14
£21.73 - £28.67
£21.73 - £28.67
£21.73 ex VAT
Save up to £3.19 Save £0.00
Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 1 Metre Length - Aluminium Gutters Direct
Save £2.38 Save £0.00

Alumasc Skyline Aluminium Windowsill Channel - 3 Bends (75x2x30) x 1 Metre Length

£23.85
£23.85 - £23.85
£23.85
£21.47 ex VAT
£21.47 - £21.47
£21.47 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£23.85
£23.85 - £23.85
£23.85
£21.47 ex VAT
£21.47 - £21.47
£21.47 ex VAT
Save £2.38 Save £0.00
Alumasc Skyline Closer Trim - 3 Bends x 1 Metre Length - Aluminium Gutters Direct
Save up to £2.96 Save £0.00

Alumasc Skyline Closer Trim - 3 Bends x 1 Metre Length

£21.99 - £29.63
£21.99 - £29.63
£21.99
£19.79 - £26.67
£19.79 - £26.67
£19.79 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£21.99 - £29.63
£21.99 - £29.63
£21.99
£19.79 - £26.67
£19.79 - £26.67
£19.79 ex VAT
Save up to £2.96 Save £0.00
Alumasc Skyline Aluminium Windowsill Union Clip - 4 Bends - Aluminium Gutters Direct
Save up to £1.01 Save £0.00

Alumasc Skyline Aluminium Windowsill Union Clip - 4 Bends

£9.48 - £10.06
£9.48 - £10.06
£9.48
£8.53 - £9.05
£8.53 - £9.05
£8.53 ex VAT

The Alumasc Skyline Soffit range provides high-quality aluminium soffit solutions for a clean, durable roof underside finish. Manufactured from str...

View full details
£9.48 - £10.06
£9.48 - £10.06
£9.48
£8.53 - £9.05
£8.53 - £9.05
£8.53 ex VAT
Save up to £1.01 Save £0.00

More about All Alumasc Skyline Cills and Closers

Here you will find Skyline aluminium cills and closers designed to provide a neat transition around windows and openings. They support good weather protection while improving the overall continuity of the façade in both new builds and refurbishment projects.

FAQ

What do Skyline cills and closers actually do?

Skyline cills and closers form a precise, weatherproof joint beneath windows or cladding and prevent water tracking into the façade.

Do Skyline cills and closers come pre-drilled for fixings?

Yes, cills and closers are supplied pre-drilled to speed up fitting and maintain accuracy on site.

Can cills and closers be made to custom lengths?

Yes, Alumasc manufactures cills and closers to any required length for accurate on-site fitting.

Are fixings for cills and closers included with supply?

Yes, cills and closers are supplied complete with stainless-steel fixings and joint covers.

How do aluminium cills improve façade performance?

Precision-cut aluminium cills control drainage and prevent staining below windows. Their integral drip grooves direct rainwater clear of the structure, extending the lifespan of brickwork and render.

What’s the correct method for fixing aluminium cills to prevent distortion?

Install cills and closers using non-ferrous fixings and ensure drip edges are correctly positioned to avoid run-back onto façades.

What’s the best way to avoid thermal bridging under window cills?

Fit insulation breaks or isolating shims under cills to minimise thermal bridging and condensation risk.

How do I inspect cills and closers for wear or seal degradation?

Inspect under-cill drip edges annually and clear debris to stop water staining on façades.

FEATURED LINKS

INFO LINKS

OUR POLICIES

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

© 2025 Aluminium Gutters Direct

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare