Modern aluminium gutter profiles, offering style and high capacities with two sizes allowing use on both large commercial and smaller domestic roofs. The pressed aluminium gutters are both direct fixed, meaning gutter brackets are not required. This allows swift installation bringing clean contemporary gutter lines to the roof eaves. Jointing is by Dales over-strap with Dales low-modulus silicon sealant that offers long trouble-free joints for years to come.

ProfileNene 1

Nene 2

Nominal Size (mm)150x100
Wall thickness2mm3mm
Gutter capacity3.29 l/s8.08 l/s
Outlet type and capacity
76.2mm round2.46 l/s2.91 l/s
76.2mm square3.06 l/s3.64 l/s
101.6mm round5.29 l/s
101.6mm square6.51 l/s
152.4mm round
101.76 x 76.2mm4.14 l/s4.92 l/s

Specification clauses

Nene 1 components
Nene 2 components



Dales manufacture standard gutters & pipes in either Anodised Aluminium or Architectural Polyester Powder Coating finishes. Details of the huge range of colours and finishes available can be found here.

Anodised Aluminium Colour Range

Details of the anodised colour ranges available can be found here. Please also refer to Dales terms and conditions relating to anodised aluminium finishes.

Polyester Powder Coatings:

Dales recommend Syntha Pulvin (Sherwin Williams) architectural polyester powder coatings for aluminium products coated at its Syntha Pulvin Approved & ISO 9001:2015 Quality Assured coating facility in Ilkeston. All powder coated items are coated in accordance with the stringent standards demanded by Syntha Pulvin as part of their accreditation process which meets or exceeds the minimum requirements of BS 12206-1 2004.

Dales also supply aluminium products in Interpon D (Akzo Nobel) and Drylac (Tiger) Architectural Polyester Powder Coatings using only each manufacturer’s Third Party Approved Applicators.


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

Marine Specification:

It is the specifier’s responsibility to ensure that Marine Specification is specified in the contract particulars, and our Project Managers can assist by advising on and providing appropriate NBS Specification clauses.

Any guarantee which the polyester paint manufacturer or anodiser will offer is determined 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 any order being placed. It should be borne in mind that if the goods are on the seafront, or within 1km of the sea, then a paint manufacturer may not offer a guarantee, but anodisers might.

In locations with high levels of UV light, such as the coast, anodised finish is recommended purely from a performance criteria. If a polyester powder coating finish is preferred then Dales recommend Qualicoat 2 Marine specification should be used.

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 stainless steel fixings are required throughout.

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 contact one of our Directors or Project Managers to discuss this further. Please bear in mind it is not always possible to guarantee products installed in harsh environments.


Fire: Aluminium & Finishes

Dales Aluminium Products are non-combustible

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

Building Regulations Part B: Fire Safety (June 2022 Amendments apply from 1st December 2022) require that only non-combustible materials that are either A2 s1, do or A1 must be used:

  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)

Suitable materials are only those that successfully achieve classification as either A2, s1 d0 or A1* non-combustible under Fire Classification: Reaction to Fire EN BS 13501-1:2018

A European Commission Directive* forms part of the structure of legislation**, that the English Building Regulations including Part B rests upon and that lists construction materials that belong to Class A and 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 and 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 and these materials do not require testing under BS 13501-1:2018.

Dales Fabrications Ltd utilise Architectural Polyester Powder Coatings from all the major manufacturers including Syntha Pulvin (Sherwin Williams), Interpon D (Akzo Nobel) , Drylac (Tiger), Axalta, Powdertech whose 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.

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.

Specifiers, Developers and Main contractors are further invited to consider the RIBA Fire resources web page.

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

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



The visual effect of a finished curved system, whilst technically demanding and costly, always gives a finished project a ‘landmark’ quality. Dales have a long heritage of designing and manufacturing curved products since the business was first established in 1977.

When specifying curved systems, it is recommended that one of our Directors or experienced Project Managers meet with the project design team to discuss the possibilities, use the chat facility or call us on t.0115 930 1521

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. 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. 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.


On receipt of project drawings, we assign a Project Manager to each project. They provide a single point of contact throughout the life of the project, from initial design to completion. To discuss the requirements for your project, our Project Management Team can be contacted on Tel: 0115 930 1521.

Roof Drainage and Gutter System Design

Dales 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 on t. 0115 930 1521.

Professional Indemnity Insurance

Dales Fabrications hold full Design/Professional Indemnity Insurance with a first-class security in the London market. This allows architects and specifiers to use our products with confidence.

BS EN ISO 9001: Design & Manufacture

Dales Fabrications have been working within the constraints of BS EN ISO 9001 accreditation since 1993. Our ISO 9001: Design & Manufacture certificate is available to view here.

Flow Capacities

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.

Pricing, Ordering & Lead times

For a quotation, Dales will need the details of the profiles and the quantity required (if known). If you don’t know the quantity needed, please send the roof plans, elevations and roof eaves section to: Should you wish to speak to a member of the Dales Project Management Team please contact Dales on t.0115 930 1521.

Should you wish to place an order, please email Depending on the size of your order, you may be eligible to apply for a credit account.

Current lead times for all the standard gutter profiles shown in this literature are available in Dales Standard Colours in less than two weeks and in the extended BS and RAL Colours in approximately two weeks. Other colour ranges (Metallic, Anodite and Special) may take longer. For these gutters in an Anodised finish please give us a ring on t. 0115 930 1521.

For 152.4mm pipes (either dia. or sq.), SecretFix VR pipe systems or if lead times are important, please call us on Tel: 0115 930 1521 to discuss your requirements.

Purpose-made hoppers and other Specials

Dales are a specialist manufacturer of both standard and bespoke items and we are happy to help specifiers achieve their design ideas.

If you have a suitable project please email drawings to

Preferred Installer Network

Our network of Preferred Installers are available to provide a full supply and fix package. When a price is requested Dales can advise which Preferred Installers will be suitable dependant on the size and type of products to be installed.

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 details can be provided.

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.


Fascia Profiles

Dales design and manufacture fascia profiles to almost any shape, size or proportion including curved and elliptical designs. As part of our specification service preliminary drawings can be prepared for integration into your project 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 variety of soffit systems, 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 details are available here.

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 advice on marine environments please see above.

Installation, Operation & Maintenance Information

As part of the Dales Project Management: Design & Specification Service a full technical guide is issued 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. This also includes a comprehensive ‘Fixings Identification List’ that identifies where each fixing is supposed to 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 will include 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 induced when the system is operating at full capacity in line BS 9101:2017. Snow guards are recommended where snow loads are anticipated. (see BS EN 12056-3: 2000 National Annex NB clause NB.4)

Thermal movement

Dales design 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.


Aluminium: The sustainable choice

More on the sustainability of aluminium is available here.

Environmental Policy

Our environmental policy is available to view here.

Responsible Sourcing

Our Responsible Sourcing policy is available to view here.


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