Aluminium gutters

Dales Fabrications offer an extensive range of standard aluminium gutters.  Whether it is combined with one of our aluminium fascia systems or being fixed to a more traditional eaves configuration, each of our aluminium gutters will not only enhance the appearance of your eaves, but will also provide decades of guaranteed trouble free roof drainage.  In addition to our range of decorative profiles, we also offer a range of high capacity aluminium box gutters.

Aluminium Ogee Gutter

Ogee range

Traditional Ogee style aluminium
gutters in two standard sizes.

Aluminium Gutter - HR Range

HR range

High capacity aluminium gutters with the
appearance of traditional half round gutters.

Aluminium Gutter - Nene Range

Nene range

A modern style of aluminium guttering
available in two standard sizes.

Aluminium Gutter - River Range

River range

Available in four standard sizes, the River range
is suitable for almost any development.

Aluminium Gutter - Torent Range

Torent range

A range of aluminium gutters
suitable for deep roof constructions.

Aluminium Gutter - Delta Range

Delta range

An aluminium box gutter available in four
sizes to suit almost all applications.

Aluminium Gutter - DF Range

DF range

Our DF box gutter range offers two sizes
for both large and small projects.

Aluminium Gutter - Domestic range

Domestic range

Two smaller aluminium gutter profiles,
ideally suited to the domestic market.

Design & Specification Service

Project Management Design & Specification Service

Upon receiving project drawings, Dales assigns a dedicated Project Manager to oversee each project. Project managers act as a single point of contact throughout the project’s life, from its initial design to completion. Together with the specifier, project managers establish relevant criteria, such as support methods, material requirements and budget. Additionally, the Project Manager prepares CAD drawings, calculations, NBS Specifications and quotations. Overall, this provides a complete specification service. To further discuss your project’s requirements, you can contact our Project Management Team on Tel: 0115 930 1521.

Professional Indemnity Insurance

Dales prioritises client confidence and assurance. Accordingly, we hold full Design/Professional Indemnity Insurance with a first-class security in the London market, which means architects and specifiers can use our products with confidence.

BS EN ISO 9001: Design & Manufacture

Since 1993, Dales Fabrications has worked within the constraints of BS EN ISO 9001 accreditation. Click here to view our ISO 9001: Design & Manufacture certificate. 

Design considerations

Roof Drainage and Gutter System Design

At Dales, we operate a project management system with suitably qualified and experienced technicians. Project managers can provide a gutter system designed to suit your individual project requirements incorporating gutter and outlet and positioning advice in accordance with BS EN 12056-3 for a given design rate of rainfall. To use this service please contact a member of our project management team.

All published flow capacities contained in this literature are calculated in accordance with the recommendations contained in BS EN 12056-3: 2000. Dales policy is not to issue high, although genuine, experimental results which include no margin of safety.

Lead times

All the standard gutter profiles shown are available in standard polyester powder paint finishes in less than two weeks. However,  for the larger standard gutters, 152.4mm pipes (either dia or sq) and Traditional pipe systems or if lead times are of particular importance please call one of our Directors Tel: 0115 930 1521 to discuss your requirements.

Purpose-made Gutters and other Specials

Dales specialise in the manufacture of both standard and bespoke items. Although most of our bespoke gutters tend to arise through integration with our complete eaves systems, we are always happy to help specifiers achieve their design ideas. If you have a suitable project and would like one of our Technical Managers to visit you please email your request to

Lightning Conductivity

Dales aluminium gutters and down-pipes can usually be rendered electrically continuous using the Dales lightning conductivity clip, as part of a lightning protection system. This can be discussed with a Dales project manager and a detail can be provided.

However, it’s important to note that Aluminium gutters and pipes are not suitable as the sole lightning protection system for any building and should only be utilised as part of an overall lightning protection design. Specifiers should refer to the latest EN BS standard concerning the protection of structures against lightning for further information.

Associated products

Rainwater pipes

You can explore our diverse range of rainwater pipes including contemporary, traditional (Cast collars) and secret fix systems here.

Fascia Profiles

Dales are able to design and manufacture fascia profiles to almost any shape, size or proportion including curved and elliptical designs. Additionally, as part of our specification service preliminary drawings can be prepared which can be inserted directly into your own drawings. All systems are designed on an individual project basis and a 25 year guarantee may be available, subject to terms and conditions. Example drawings can be downloaded here.

Soffit Systems

Dales offer a wide variety of different soffit types, from secret fix panels to secret-fix planks, more details are available here.

Rainscreen panels

Dales design and manufacture aluminium rainscreen panels on a bespoke basis to suit each individual project, more detail available here.

Support Systems

More information of the various support systems that Dales can provide is available here.

Wall Copings

Dales design and manufacture aluminium wall copings on a bespoke basis to suit each individual project, more detail available here.


Fire: Aluminium & Finishes

Dales Aluminium Products are non-combustible

Dales manufactures products in either plain aluminium, Anodised Aluminium or Architectural Polyester Powder Coating finishes, all of which meet non-combustible standards (A1 or A2, s1 d0).

Compliance with Building Regulations:

Building Regulations Part B: Fire Safety (June 2022 Amendments apply from 1st December 2022) mandate the exclusive use of non-combustible materials that are either A2 s1, do or A1 for specific building elements:

  1. for walls and ‘specified attachments’ of relevant buildings over 18m, and;
  2. on the external surfaces of external walls for all ‘residential’ purpose group buildings over 11m (Groups 1 & 2)

Only materials achieving classification as either A2, s1 d0 or A1 non-combustible under Fire Classification: Reaction to Fire EN BS 13501-1:2018 are deemed suitable.

A European Commission Directive* forms part of the structure of legislation**, upon which the English Building Regulations including Part B rests. It lists construction materials that belonging to Class A and that make no contribution to fire. This includes steel and aluminium and non-organic treatments of the same (such as zinc-galvanising for steel and anodising of aluminium).

Aluminium, steel and non-organic treatments of the same (including zinc-galvanising for steel and anodising of aluminium) are A1 non-combustible and make no contribution to fire. This is confirmed in a European Commission Directive that forms part of the UK legislation that the English Building Regulations including Part B rests upon. Subsequently, these materials do not require testing under BS 13501-1:2018.

Dales Fabrications Ltd utilises Architectural Polyester Powder Coatings from all the major manufacturers including Syntha Pulvin (Sherwin Williams), Interpon D (Akzo Nobel) , Drylac (Tiger), Axalta, Powdertech. These powder coatings are independently tested under Fire Classification: Reaction to Fire EN BS 13501-1:2018 and achieve A2 s1, d0. Independent test classification certificates are available, if required.

Useful resources:

Dales Fabrications Ltd has also undertaken independent tests (Warrington Fire) – WF 432374 – EN 13501-12018 that confirmed A2 s1 d0 classification for an architectural powder coated Dales Fabrications Ltd system. A video taken during the test can be viewed above.

* Details of the commission decision can be found here 96/603/EC: Commission Decision

**Details of legislation can be found here SI 2019/ 465

Fire & Aluminium Solar Shade Systems

See also ‘Solar Shade Systems’ above.

Dales provides RIBA Approved Material seminar on this subject: More information on the full title, content and how to book is available here.

Fire: General

Regarding all aspects of detailing for fire-prevention and prevention of spread of fire, as with all projects, specifiers, developers and their main contractors should employ and consult a suitably qualified and experienced fire safety engineer. The engineer should ensure that all details submitted, specifically including those details which may involve Dales PPC or anodised aluminium products are considered appropriate, suitable and compliant with current building regulations & the overall fire strategy for the project.

We invite Specifiers, Developers and Main contractors to consider the RIBA Fire resources web page.

The design liability of Dales is limited to the reasonable skill and care of a specialist sheet-metal fabricator.

Quotations provided by Dales include for the items expressly listed and do not include for the supply (or design) of any supplementary items such as, but not limited to; insulation, plywood, vapour barrier, fire protection, insect mesh or mastic/sealant (other than gutter sealant). Therefore, any reference to bill pages, specifications or drawings is listed for information only.

Colour & Finish


Details of the colours and finishes available can be found here.


Anodising vs Architectural Polyester Powder Coating

Anodised Aluminium:

Anodising offers a low maintenance, high performance product with practically no UV fade. Subsequently, it is ideal for aggressive environments, including locations with high levels of UV light such as marine and coastal areas. Additionally, it offers a wide range of colours and an attractive metallic sheen that changes with the angle of view, making it a fantastic premium product that many aspire to. While it may stretch, or even break the budget, many clients nevertheless choose anodised finish in preference to architectural polyester powder coating due to the low maintenance characteristics and lifetime guarantee offered.

Anodising provides a naturalistic finish, meaning every anodised item will vary in appearance and achieving a consistently uniform finish is almost impossible. This echoes the way pieces of natural stone, wood or slate vary. This is a fundamental characteristic of anodising and represents a primary difference between it and paint finishes such as architectural polyester powder coating. In fact, the variance and shading differences that occur across anodised products of a chosen colour are a primary reason to choose anodising to protect your building. Ultimately, if a uniform colour finish is desired then anodising is probably not the right finish for you.

Architectural Polyester Powder Coatings:

Alternatively, if you want a low maintenance, robust finish in a staggering colour palette offering different gloss levels even for relatively small production runs of bespoke products, then architectural polyester powder coating is the solution. The colours and finishes for polyester powder coating are developing all the time and now there are even special effect powders that simulate timber, stone, corten, verdi gris and more.

Dales use only Syntha Pulvin powders in their second factory, which houses their Syntha Pulvin Approved Applicator facility. However, Dales are happy to provide our products in Interpon D1036 & D2525, Tiger Drylac, Axalta and Powdertech Special Effect powders using each manufacturer’s Approved Applicator, as necessary.


Dales products, whether supplied in anodised or architectural polyester powder coated finish can usually be provided with guarantees. However, this depends on their geographical location and specific environment and is subject to terms and conditions.

Marine Specification

The specifier must include Marine Specification in the contract particulars. Our Project Managers can help by giving advice on and providing appropriate NBS Specification clauses.

The comparison between Anodising and Polyester Powder Coating in the “Colour” section above highlights that in locations with high levels of UV light, such as the coast, we recommended an anodised finish purely from a performance criteria. However, once budget, contract size, and production issues are considered, marine specification polyester powder coating may be the more practical choice.

If the intention is to use architectural polyester powder coating in a coastal or marine situation then a marine environment paint specification should be considered, especially in aggressive environments such as industrial and marine environments, i.e.. within 2km of the sea or tidal estuary.

In non-marine environments, we apply polyester powder coating to give an average 60 microns paint film to visible faces only and that can be guaranteed for up to 40 years, terms and conditions apply. On the other hand, for a Marine Specification guarantee to be considered, a minimum of 60 microns of paint must be applied to both internal and external surfaces and A2 stainless steel fixings used.

The polyester paint manufacturer or anodiser will determine any guarantee offered by them on an individual project basis upon completion of a questionnaire submitted by the customer and possible site visit, both of which must be completed prior to placing any order. It should be borne in mind that if the goods are on the seafront or within 1km of the seafront then a paint manufacture may not offer a guarantee, but anodisers might.

Acutely Exposed or Industrial Environments

For acutely exposed marine or industrial environments Marine Specification can be further upgraded in several ways, which includes one or more of the following:
• changing the base aluminium alloy to a ship-building alloy,
• changing the powder coating to Qualicoat 2 specification,
• amending secondary supports to all aluminium,
• changing fixings to A4 stainless steel (provided such suitable fixings are available) or
• moving to an anodised finish.

If you consider that your project may be in an acutely exposed marine or industrial environment, please get in touch with one of our Directors or Project Managers to discuss this further. However, please keep in mind guaranteeing products installed in harsh environments is not always possible.


Dales products, whether supplied in anodised or architectural polyester powder coated finish can usually be provided with guarantees. However, this depends on their geographic location and specific environment and is subject to terms and conditions.



Durability, Loadings & 3D Modelling


Dales systems are designed to give a low maintenance life of 60 years in rural and suburban conditions & up to 25 years in industrial conditions, dependant on the exact environment. For marine environments see above.

Operation & Maintenance Information

As part of the Dales Project Management: Design & Specification Service, we issue a full technical guide to site that includes A3 copies of all Dales detail proposal drawings in full colour and generic system fixing instructions as a comprehensive Technical Guide. Furthermore, the guide also includes a comprehensive ‘Fixings Identification List’ that identifies where each fixing is supposed to be used, the same information is noted on the detail proposal drawings too.

It is the customer’s responsibility to request a full O&M pack from Dales, which includes a complete detail drawings pack and the relevant generic fixing instructions complete with the maintenance schedule and any guarantee originally requested in the original customer order.

Loadings: General

Dales gutter systems are designed to accommodate loadings in excess of those induced when the system is operating at full capacity and are compliant with BS 9101:2017. Snow guards are recommended where sliding snow may cause impact loading in excess of normal design criteria. (see BS EN 12056-3: 2000 National Annex NB clause NB.4)

3D Modelling

Where Dales are required to design their systems, for whatever reason, using 3D modelling software, typically AutoDesk Revitt, lead times for the preparation of detail design drawings (Dales proposal drawings) or 3D models may increase. In turn, this may affect overall lead times for the provision of manufactured products and Dales are not liable for any costs however they may arise due to the increase in design time that results from the need for 3D computer modelling. Dales reserves the right to charge for any such increased design time incurred in their design office that results from the need for 3D modelling.

Thermal movement

Dales designs all systems to accommodate the extremes of temperature typical in the UK. For overseas projects, please contact Dales to discuss the requirements of your project.

Curving systems, Joint Modulation & Fixings

Curved or Facetted Gutters

While technically demanding and costly, the visual effect of a finished curved system always gives a finished project a ‘landmark’ quality. Dales has a long heritage of designing and manufacturing curved products since the business was first established in 1977. When specifying curved systems, Dales recommends that one of our Directors or experienced Project Managers meet with the project design team to discuss the possibilities. You can use the chat facility or call us on t.0115 930 1521. 

Where a curve in plan involves a non-rectangular or square gutter profile, i.e. raking or moulded front face, a facetted gutter may provide a most satisfactory solution.

Modulation to Grid or Curtain-walling

Gutter systems are most often supplied in standard lengths, usually 3m, and modulation with grid or curtain-walling mullions is not normally considered necessary. Therefore, if modulation is required, it should be identified in the NBS Specification clause and Dales Project Managers can assist and advise on any costing implications that may arise due to modulation.


Fixings present a potential weak link in any system. As such, Dales take the process of fixing selection as seriously as the design of the system itself. Therefore, all fixings have been selected after careful consultation with manufacturers and rigorous testing for both ultimate strengths and potential incompatibility issues. All necessary fixings are supplied as part of the complete package from Dales.



Dales operates within the constraints of BS EN ISO 9001 accreditation and and have done so since 1993. Our ISO 9001: Design & Manufacture certificate is available to view here.


Dales Fabrications work within the constraints of BS EN ISO 14001, having gained certification in December 2023. Our ISO 14001 certificate is available to view here.

Aluminium: The sustainable choice

Aluminium is recognised as one of the most sustainable materials for use in the building industry. This is due to the vast natural deposits of bauxite (aluminium ore) and product longevity, combined with low recycling costs. Around 98% of the aluminium used in UK construction projects is recycled.

Environmental Policy

Our environmental policy is available to view here.

Responsible Sourcing

Our Responsible Sourcing policy is available to view here.

Preferred Installer Network

Our network of carefully selected preferred installers are on hand to provide a full supply and fix package. These companies specialise in the install of our materials and fit them on a regular basis. They vary in size from large facades installers to smaller eaves and rainwater goods specialists.


Rainwater systems brochure

Request a sample

Request a sample

Profile, colour and surface finish samples available to order.

Visit our factory


Dales welcomes all specifiers, engineers and clients to see our solutions being manufactured first hand.

Send your drawings

Send your drawings

Involve our design team early for optimum solutions by uploading your 2D drawings or provide a link to your 3D model here.

Request a site visit

Request site visit

We can bring our experience and expertise directly to you at your site.

Request a sample

Request a sample

Profile, Colour and surface finish samples available to order.

Request factory tour


Dales welcomes all specifiers, engineers and clients to see our solutions being manufactured first hand.

Send your drawings

Send your drawings

Involve our design team early for optimum solutions by uploading your 2D drawings or provide a link to your 3D model here.

Request a site visit

Request site visit

We can bring our experience and expertise directly to you at your site.

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