Aluminium Decking & Balcony Components
Call Now: 01622 235 672

Architects & Specifiers

Developers & Contractors

H.A. & Local Authority

Class B Board2020-06-22T11:05:40+01:00

AliDeck Aluminium Decking Class B Board

The AliDeck Class B Balcony Decking Board is our original slip-resistant aluminium balcony decking product, offering unrivalled slip-prevention and B-Rated for fire safety. It has all the same product features as our other boards including quick installation times, a fully aluminium construction, and our 30-year warranty, but its B Fire Rating means it should only be used for ground-level decking projects.

These aluminium metal decking boards are treated with a special powder-coating process which colours the boards in a choice of our full range of AliDeck colours. This finish along with the aluminium construction gives the boards an excellent fire rating and these are non-combustible except for the rubber slip-resistant insert which received a B Fire Rating.

Rating Combustibility
A1 Non-combustible/No contribution to fire
A2 Non-combustible/No contribution to fire
B Very limited contribution to fire
C Limited contribution to fire
D Acceptable contribution to fire
E Acceptable contribution to fire
F No performance requirements
Rating Smoke Emission
S1 Smoke emission absent or weak
S2 Smoke emission of average intensity
S3 Smoke emission of high intensity
Rating Flaming Droplets
D0 No dripping
D1 Slow dripping
D2 High dripping
View Fire Test Results

Slip Resistant Aluminium Metal Decking for Decks, Terraces and Walkways

AliDeck Non-Combustible Aluminium Metal Decking
  • Dimensions:
    Length: 4 metres & 6 metres | Width: 120mm | Depth: 30mm
    Maximum Overall Decking Area: Unlimited
    Allowable Span: 1200mm on 4kN load
  • The AliDeck Class B Balcony Decking Boards are constructed from aluminium and feature a rubber insert for slip-resistance, therefore making them a B Fire Rated decking solution. These aluminium decking boards are treated with a durable Qualicoat powder-coating to add colour to the boards.

Speed and ease of installation are key to any project, so we have designed a board that is easy to work with and fix to structures. The board can also be trimmed down the length to match any projection of balcony and still be structurally stable across the whole plank. The boards can be cut to size along both the length and width.

The AliDeck Aluminium decking boards are 50% quicker to install compared to other decking systems on the market. These boards are fixed from the top down so requires no fancy, fiddly fixings. It can also span 1200mm between joists on a 4kN loading.

The Class B Boards must be installed with a fall (recommended 1:80) for drainage.

Aesthetics are key to a great finish; our boards are designed to look like decking but not to feel like aluminium.

Colour Options
The decking boards are available in the full AliDeck range of Qualicoat powder-coat colours.

All AliDeck aluminium decking boards are fully compatible with all AliDeck Joists.

The boards are constructed completely from 100% aluminium (6063 T6 grade), up to 30% of which has been recycled to make these boards eco-friendly and much better for the environment.

Due to the fact that AliDeck is aluminium and finished using the 5 stage Qualicoat system, little or no maintenance is required. General grime can be removed simply with a damp, lint free cloth or mop with warm soapy water.

Protective Finish
The planks are coloured using the Qualicoat powder coating finish. Qualicoat is a quality label organisation committed to maintaining and promoting the quality of coating on aluminium and its alloys for architectural applications.

The decking is supplied with a 30 year warranty against splitting, cracking, warping, splintering, rotting, twisting and material or manufacturing defects. It has a minimum 60 year life expectancy.

AliDeck Aluminium Decking Installation Videos

Are the End Plates supplied with the AliDeck boards?2020-07-29T15:34:32+01:00

No. If you wish to close the board ends you will need to purchase AliDeck End Plates when you place your order.

What grade of stainless steel fixings should I use?2020-07-21T16:15:00+01:00

We strongly recommend that fixings are stainless steel grade A2 or A4. Fixings made from other materials such as nickel-plated brass or zinc are not advised.

Can I drill fixings straight through the decking boards?2020-07-21T16:13:53+01:00

We strongly recommend that clearance holes are pre-drilled in the decking board. This will help to ensure that the fixing will have minimal interaction with the aluminium and minimise the risk of galvanic corrosion.

Can I use impact drivers to tighten fixings?2020-07-21T16:12:00+01:00

We strongly recommend that impact drivers are not used to tighten fixings when installing our products. The use of impact drivers can over-drive the fixing and cause damage to the head, weakening or potentially breaking the fixing altogether.

If we are able to use self-drilling screws on our project to fix to steelwork, what kind can we use?2020-07-21T16:04:08+01:00

When you are sure that stainless steel self-drilling screws are suitable for your application, we recommend the following;

  • For steelwork less than 3mm thick, coarse-thread self-drilling screws should be used
  • For steelwork greater in thickness than 3mm, fine-thread self-drilling screws should be used

It is essential that self-drilling screws with thermal washers are used. The rubber washer provides a thermal break between the screw and the decking board and reduces the risk of cross-contamination between steel and aluminium. Self-drilling screws with washers of the correct size to comfortably fit within the central fixing area of our decking boards are readily available.

What fixings should I use to fix AliDeck decking boards to steelwork?2020-07-21T16:01:10+01:00

Stainless steel self-drilling screws are able to be used to fix AliDeck products to steel framework. However, we strongly recommend that you understand precisely the specification and construction of the steel you are looking to fix AliDeck products to and choose the appropriate fixing to suit your specific situation.

Does AliDeck supply fixings?2020-07-21T15:57:22+01:00

We supply M8 bolts, nuts, and washers to fix our aluminium decking boards to our joists, but only when our boards and joists are purchased together as a decking system. We do not supply fixings when only our boards are purchased.

What are the standard lengths of AliDeck decking boards?2020-05-19T10:05:15+01:00

All AliDeck decking boards are available in stock lengths of 4m or 6m. We are also able to cut to length for a labour charge.

What is the depth of the Lite Decking Board?2020-05-19T09:34:17+01:00

The depth of the AliDeck Lite Decking Board is 20mm.

What is the depth of the Junior Flat Decking Board?2020-05-19T09:33:27+01:00

The depth of the AliDeck Junior Flat Decking Board is 20mm.

What is the depth of the Junior Decking Board?2020-05-19T09:34:50+01:00

The depth of the AliDeck Junior Decking Board is 20mm.

What is the depth of the Senior Flat Decking Board?2020-05-19T09:35:12+01:00

The depth of the AliDeck Senior Flat Decking Board is 30mm.

What is the depth of the Senior Decking Board?2020-05-19T09:35:37+01:00

The depth of the AliDeck Senior Decking Board is 30mm.

Do you have an overview of your aluminium metal decking safety tests available?2020-05-01T15:25:33+01:00

Yes. We have produced our Certifications & Test Evidence digital booklet, which provides an overview of our fire resistance, slip resistance, wear resistance and deflection resistance testing and includes key test result data and certificates. Please visit our downloads page to access it.

Should I install the aluminium decking at a pitch for drainage?2020-05-01T12:09:15+01:00

Yes. We recommend a 1:80 fall, which is about 0.75 degrees.

In what ways can AliDeck complete and ship my aluminium metal decking order?2020-05-01T10:14:05+01:00

There are several ways that we can handle your order, as follows:

Custom Extrusion

For large orders (minimum of 350KG per extrusion) we are able to arrange for custom extrusion to the precise quantity required. These extrusions are then coated and shipped direct to customers.

Stock Lengths

We hold a stock of uncoated, mill-finish decking boards and clips in 4m and 6m lengths, and joists and gutters in 6m lengths. These are then powder-coated according to order and are shipped to customer directly from our coating facility.

Cut To Length

We can cut extrusions to length for our customers. We do this at our warehouse in Rochester, Kent, and deliver from there. This service is subject to a labour charge, which varies according to quantity.

Do you have support material for installing AliDeck aluminium metal decking?2020-05-01T08:02:16+01:00

Yes. We have prepared a comprehensive Installation Guide, which is available for download at our Maintenance and Installation page.

Is there an AliDeck metal decking product designed for retrofit projects?2020-04-30T11:04:31+01:00

All AliDeck aluminium metal decking products can be used in retrofit and replacement projects. We have also developed the AliDeck Lite Board and Lite Joist specifically for this market as a cost-effective, quick-fit, low-profile solution for timber and composite replacement projects.

What is the depth of AliDeck aluminium decking boards?2020-04-30T10:51:08+01:00
How can I find out technical details about AliDeck aluminium decking products?2020-04-30T10:48:15+01:00

AliDeck has produced in-depth technical datasheets for all of our aluminium metal decking products. Please visit our downloads page to download them.

Do AliDeck have a CPD relating to aluminium metal decking?2020-04-30T10:24:32+01:00

Yes. AliDeck has developed an online CPD with our sister company, Able Canopies. The CPD covers Fire Resistance Requirements for Balconies on Residential Buildings and will help architects gain a greater understanding of fire regulations pertaining to balcony elements and the risks of using flammable materials. Please visit our Architect’s Service page to find out more.

Are AliDeck aluminium metal decking products available in RIBA Product Selector, NBS or BIM Library?2020-04-30T10:05:44+01:00

Yes. AliDeck metal decking boards, joists and pedestals are available in RIBA Product Selector, NBS Spec and BIM Library. Find out more at our Architect’s Service page.

How do you serve architects who are interested in specifying aluminium metal decking?2020-04-30T10:03:31+01:00

AliDeck is committed to providing a second-to-none service to architects and specifiers as they specify products for the nation’s new homes. We have developed a central location for our Architect’s Service on our website.

Can you send me samples of your aluminium metal decking?2020-04-30T09:09:22+01:00

Yes. You can order samples of our aluminium decking products here.

Do you have an aluminium metal decking brochure that I can download?2020-04-30T09:07:45+01:00

Yes. We have our latest brochure available for download here.

Are AliDeck products covered by a warranty?2020-04-30T09:03:23+01:00

Yes. AliDeck provide a 30-Year Manufacturer Product Warranty for all AliDeck System products. You can view our warranty on our downloads page.

If I affix a door stop to the balcony boards, will my warranty be affected?2020-04-30T09:03:38+01:00

No. A simple hole through a balcony board to affix a door-stop will not void your warranty.

Am I able to affix a door stop to the balcony boards to stop my door swinging?2020-04-30T08:58:29+01:00

Yes. We recommend attaching a standard door stop using a simple nut and bolt rather than a self-tapping screw, as a nut and bolt would be a more secure option.

Will there be corrosion problems if installed alongside steel?2020-04-28T07:48:07+01:00

No. Galvanic corrosion can occur when aluminium and steel are in close proximity but all AliDeck decking boards are powder-coated on all faces to ensure the aluminium is protected. As an extra precaution, we do offer a fire-retardant tape that could be used as a barrier between the decking boards and steel framework for total peace-of-mind.

Does AliDeck provide installation training?2020-04-27T09:24:08+01:00

Yes. AliDeck is proud to offer the AliDeck Training Academy to help installers understand how to use our products in the best and correct way. Training is carried out at our head office in Rochester, Kent. Please visit our Training Academy page to find out more.

Will the AliDeck System accommodate various build-up heights?2020-04-27T09:22:13+01:00

Yes. The AliDeck System has been designed as a configurable family of decking products, including boards, joists, pedestals and accessories, and all elements are inter-compatible. This allows for a wide range in flexibility as AliDeck products can be mixed-and-matched to suit your build-up height requirements.

What should I clean my AliDeck products with?2020-04-27T09:09:18+01:00

AliDeck recommend cleaning your decking and its structure with a solution of soapy warm water and a lint-free cloth, before throughly rinsing with clean warm water. No abrasive materials should be used. Never use bleach or similar chemicals to clean AliDeck decking products. Please refer to our installation guide for more information.

How often should I clean my AliDeck decking boards?2020-04-27T09:05:19+01:00

AliDeck recommends that all installed elements are cleaned at regular intervals, at least twice a year, to prevent build-up of dirt and substances which may cause damage or create an increased risk of slips and trips. In coastal or industrial settings, we recommend cleaning at least every three months.

Do AliDeck decking boards require repainting every few years?2020-04-27T09:01:35+01:00

No. The AliDeck boards are powder-coated with Qualicoat, a powder-coat process for aluminium in architectural applications, which has a lifespan of 30 years and beyond.

Can I cut AliDeck decking boards to width and length?2020-04-27T08:53:47+01:00

Yes. AliDeck boards have been designed to allow pre-installation cutting, please refer to our installation guide for precise notes.

Can I install the AliDeck System onto waterproofing?2020-04-27T08:52:47+01:00

Yes. We strongly recommend that additional spreader plates or padding are used to distribute the load and prevent penetration of the waterproof membrane. AliDeck cannot be held responsible for penetration damage to existing waterproofing. If unsure of application, please contact us.

What gap should I leave between AliDeck decking boards?2020-04-27T08:52:27+01:00

We recommend a 5mm gap is allowed between boards, but a minimum of 3mm or a maximum of 8mm is acceptable.

Are AliDeck decking products compliant with fire regulations?2020-04-27T08:39:54+01:00

Yes. All AliDeck A-rated boards, joists, pedestals and accessories are fully compliant with all fire-safety legislation, meeting and exceeding all recent updates.

What do Euroclass classifications mean?2020-04-27T08:39:10+01:00

The Euroclass ratings have several elements which each indicate a performance rating. The first element is regards combustibility and is rated from A to F, with A representing non-combustible materials. The second element relates to smoke emission level and is rated 1 to 3, with 1 indicating smoke emission as weak or absent. The third element relates to production of flaming droplets and is rated 0 to 2, with 0 indicating no droplets produced. Finally, the inclusion of “fl” indicates that the products have been specifically tested for flooring applications.

Are AliDeck decking products fire resistant?2020-04-27T08:38:34+01:00

Yes. All elements* of the AliDeck System have been tested for fire safety and are Euroclass A-rated, achieving A2,s1-do and A2fl-s1 certification.

*The AliDeck Class B board is the exception and is recommended for ground-level use only.

Click on the button below to download our free brochure:


AliDeck manufacture and supply high quality, commercial grade aluminium decking systems with slip resistant and fire resistant features to the UK domestic and trade markets.

01622 235 672  |  |

Go to Top