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Alumasc Cast Aluminium Half Round Guttering
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17 products
17 products
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{"id":57972609614155,"title":"125mm (5”) \/ 100 x 75mm \/ Mill Finish (Unpainted)","option1":"125mm (5”)","option2":"100 x 75mm","option3":"Mill Finish (Unpainted)","sku":"HR3\/384","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Running Outlet Double Spigot Socket 100 x 75mm - 125mm (5”) \/ 100 x 75mm \/ Mill Finish (Unpainted)","public_title":"125mm (5”) \/ 100 x 75mm \/ Mill Finish (Unpainted)","options":["125mm (5”)","100 x 75mm","Mill Finish (Unpainted)"],"price":6587,"weight":0,"compare_at_price":10247,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £65.87
£102.47
-36%
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{"id":57972609220939,"title":"100mm (4”) F Variation \/ 75 x 75mm \/ Mill Finish (Unpainted)","option1":"100mm (4”) F Variation","option2":"75 x 75mm","option3":"Mill Finish (Unpainted)","sku":"HR1\/381\/F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Running Outlet Double Spigot Socket 75mm2 - 100mm (4”) F Variation \/ 75 x 75mm \/ Mill Finish (Unpainted)","public_title":"100mm (4”) F Variation \/ 75 x 75mm \/ Mill Finish (Unpainted)","options":["100mm (4”) F Variation","75 x 75mm","Mill Finish (Unpainted)"],"price":5778,"weight":0,"compare_at_price":8988,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £57.78
£89.88
-36%
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{"id":53389868826955,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/1","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Gutters 1.83m Length - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":4245,"weight":0,"compare_at_price":8652,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £42.45
£86.52
-51%
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{"id":53389869252939,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/153","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Gutters 0.61m Length - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":2275,"weight":0,"compare_at_price":4639,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £22.75
£46.39
-51%
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{"id":53389874299211,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/R\u0026F\/ASSY","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Old Style Rise \u0026 Fall Bracket - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":1657,"weight":0,"compare_at_price":3378,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £16.57
£33.78
-51%
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{"id":53389871350091,"title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","option1":"100mm (4”) F Variation","option2":"63mm","option3":"Mill Finish (Unpainted)","sku":"HR1\/8\/F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Running Outlet Double Spigot Socket - 100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","public_title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","options":["100mm (4”) F Variation","63mm","Mill Finish (Unpainted)"],"price":1642,"weight":0,"compare_at_price":3348,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £16.42
£33.48
-51%
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{"id":53389873381707,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/4","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Internal 90 Degree Angle - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":1425,"weight":0,"compare_at_price":2905,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £14.25
£29.05
-51%
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{"id":53389873840459,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/6","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Internal 135 Degree Angle - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":1425,"weight":0,"compare_at_price":2905,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £14.25
£29.05
-51%
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{"id":53389873119563,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/5","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium External 90 Degree Angle - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":1425,"weight":0,"compare_at_price":2905,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £14.25
£29.05
-51%
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{"id":53389873643851,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/7","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium External 135 Degree Angle - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":1425,"weight":0,"compare_at_price":2905,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £14.25
£29.05
-51%
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{"id":53389870825803,"title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","option1":"100mm (4”) F Variation","option2":"63mm","option3":"Mill Finish (Unpainted)","sku":"HR1\/10\/F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Internal Socket with Outlet Pipe - 100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","public_title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","options":["100mm (4”) F Variation","63mm","Mill Finish (Unpainted)"],"price":1357,"weight":0,"compare_at_price":2765,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £13.57
£27.65
-51%
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{"id":53389870301515,"title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","option1":"100mm (4”) F Variation","option2":"63mm","option3":"Mill Finish (Unpainted)","sku":"HR1\/9\/F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium External Socket with Outlet Pipe - 100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","public_title":"100mm (4”) F Variation \/ 63mm \/ Mill Finish (Unpainted)","options":["100mm (4”) F Variation","63mm","Mill Finish (Unpainted)"],"price":1357,"weight":0,"compare_at_price":2765,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £13.57
£27.65
-51%
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{"id":53389874561355,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/RB\/TF","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Cast Aluminium Gutter Half Round Top Fix Rafter Bracket - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":847,"weight":0,"compare_at_price":1727,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £8.47
£17.27
-51%
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{"id":53389874823499,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/RB\/SF","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Cast Aluminium Gutter Half Round Side Fix Rafter Bracket - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":847,"weight":0,"compare_at_price":1727,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £8.47
£17.27
-51%
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{"id":53389869777227,"title":"100mm (4”) \/ Mill Finish (Unpainted) \/ External","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":"External","sku":"HR1\/13","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage Half Round Cast Aluminium Non Handed Stopend - 100mm (4”) \/ Mill Finish (Unpainted) \/ External","public_title":"100mm (4”) \/ Mill Finish (Unpainted) \/ External","options":["100mm (4”)","Mill Finish (Unpainted)","External"],"price":693,"weight":0,"compare_at_price":1412,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £6.93
£14.12
-51%
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{"id":53389869515083,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/11","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Union Clip - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":693,"weight":0,"compare_at_price":1412,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £6.93
£14.12
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{"id":53389874037067,"title":"100mm (4”) \/ Mill Finish (Unpainted)","option1":"100mm (4”)","option2":"Mill Finish (Unpainted)","option3":null,"sku":"HR1\/14","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Alumasc Heritage - Half Round Cast Aluminium Fascia Bracket - 100mm (4”) \/ Mill Finish (Unpainted)","public_title":"100mm (4”) \/ Mill Finish (Unpainted)","options":["100mm (4”)","Mill Finish (Unpainted)"],"price":408,"weight":0,"compare_at_price":832,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}
Alumasc
From £4.08
£8.32
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ALUMASC CAST ALUMINIUM HALF ROUND GUTTERING · COMMON QUESTIONS
Something not answered here? The technical desk takes calls on 0330 0539354Why is half round the most common gutter shape?+
It’s simple, versatile and provides efficient water flow for most roof types. Easy to install and compatible with circular downpipes.
What lengths do they come in?+
Standard 1.83 metre (6 ft) sections are typical and align with traditional cast iron spacing for easy retrofit.
Can I join half round aluminium to existing plastic gutters?+
Yes, using transition connectors, though full replacement is usually preferred for a consistent look.
Do they need expansion joints?+
Not usually on domestic runs. Leave a 3 to 4 mm gap at joints for thermal movement in hot or exposed conditions.
What is the best bracket to use?+
Fascia brackets are suitable for most applications; rise and fall brackets for open eaves. Alumasc’s cast brackets are strong and match the finish.
Can they be installed by one person?+
Yes. Aluminium is light enough for one person, although long runs are easier with two for alignment.
How do I touch up cut ends?+
Use Alumasc’s colour-matched paint and apply two thin coats before sealing.
What finishes are most popular?+
Black and anthracite remain the most popular, but heritage greens and lead greys are increasingly used on listed buildings.
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