Meta-Slate has been designed and developed by Steadmans to provide a roofing sheet that has the appearance of a natural slate but embodies the advantages of a modern lightweight but strong buidling material.
Meta-Slate is extremely easy to fit and boasts a beautifully simple secret fix and joint system. Because of the lightweight nature of the system (6 kg/m2) less sub structure is required when compared to a traditional slate roof and supports can be up to 1 metre apart.
Meta Slate is an innovative steel slate effect roofing material. It is used in a wide and varied range of applications including industrial buildings, offices, shops and showrooms and residential properties. Due to its unique slate effect appearance it has been approved for use on listed and historic buildings where a product that is required to blend in with traditional roofing materials has been required.
Meta Slate provides an alternative to traditional roof finishes and due to its light weight, ease of application and custom sheet sizes it can be used in a wide range of situations and fitted in a time efficient manner. Meta-SlatePlus is a combination of Meta Slate with Steadmans AS35 insulated panels, which are available in a range of thicknesses, giving a high performance roof coverage system with a traditional appearance.
Meta-Slate Roofing Sheets are manufactured in a process certified to ISO 9001:2008.
Steadmans offer an independent audit-based warranty for the Meta-Slate Roofing Systems. The QA+ warranty, from Auditing Workshop & Materials Ltd., provides pre-site and on-site quality inspections and audits to ensure the high standards of construction and finishing which will maximise service life and reduce maintenance costs.
The QA+ warranty can be extended to a ten year insurance backed warranty covering defects arising from poor workmanship, defective materials and damage resulting from design defects. Contact Steadmans for more information about the warranties.
Substrate: Hot dipped galv. to BS EN 10143:2006
|Table 04: Unfactored roof loads for Meta-Slate profiles (kN/m²)|
|Span Condition||Deflection Limit||
Meta-Slate is manufactured from 0.7mm galvanised coil with a slate blue matt polyester paint finish to the outer surface and a grey epoxy based primer to the inside. The sheet is specially embossed with a regular slate pattern and finished to appear like natural slate. Other external colours and finishes are available by special order subject to quantity and coil availability.
Meta-Slate is ideal for use in environmentally sensitive locations where box profile sheeting may not be acceptable to local
Meta-Slate sheets are available up to 6 metres long and a full range of accessories is available including starter clips, joint pieces, ridge, hip and barge flashings, end closures, sealants and fixings. The use of joint plates combined with the regular slate pattern of the Meta-Slate sheet allows for economic use of the material thus providing a very cost effective system.
Meta-Slate is available in standard lengths. Using a combination of these, together with the joining plate it is possible to clad any length and shape of roof. The joining of two lengths does not have to coincide with a truss/rafter as the joined lengths form an extremely rigid joint.
Meta-Slate roofing sheets can be fixed to either timber trusses, traditional rafters or metal purlins. The distance between each fixing point should not exceed 1000mm (800mm being optimum). Steadmans always recommend the use of roofing felt to act as a vapour barrier.
The lengths of Meta-Slate are easily cut using a standard power circular saw, jigsaw or hacksaw.
In order to achieve a 'tile hung' effect across the roof, the 'tile' pattern has to be staggered to its neighbour. For instance, in this example, length 2 has been cut at half a 'tile' pattern (marked A). The off-cut has been re-positioned at the other side of the roof to make up the 'tile hung' effect, and so on up to the depth of the roof as illustrated. For further information please contact our technical department.
Steadfast locking system
Steadmans unique Lap Locking System. Once locked into position, this ingenious design provides a weather tight joint whilst also allowing repositioning.
No special fixings are required, but care must be taken not to compress the scroll. Each length is fixed at up to 1000mm centres and is covered by the length above it.
Every Meta-Slate sheet has a location marker beneath the locking system on the top edge of the sheet: the sheet is correctly positioned when the location marker becomes visible.
Supply and Site Handling
Meta-Slate sheets are available directly from Steadmans. Meta-Slate sheets are delivered to site in packs. Steel stillages are used at the bottom of the packs to provide protection and the ends of the packs are wrapped with plastic. Maximum pack weight is 2 tonne.
Meta-Slate sheets are usually delivered to site. Off loading is the responsibility of the customer. Delivery by self off-load vehicles can be arranged.
01697 478 277
Handling and storage
The packs can be off-loaded directly to the roof, or to a storage area, which should be dry and well away from traffic. Packs may be stacked using suitable wooden bearers and packers. Bearers should be placed above each other.
Handle Meta-Slate sheets carefully to avoid marking weather sheets or liners. Lift sheets from the pack - do not drag them. Observe site health and safety procedures and the results of manual handling and other assessments.
An instructional fitting CD for the Meta-Slate Roofing Systems is available, contact Steadmans for more details.
N.B. It is not necessary to make these joints at truss/rafter as the Joining Plate does not require fixing to the roof.
Steadmans manufacture and supply a range of gutters to match the Meta-Slate profile.
Gutters are produced from a variety of materials including pre-galvanised steel (to BS EN 10143:2006) and pre-coated steel, either painted or PVC-coated on one or both sides; aluminium can be supplied to order. Complete gutter systems and accessories can be manufactured to specification, up to 10m long and 3mm thick: contact Steadmans' sales office for details of sizing.
A full range of Hunter Plastics rainwater systems is available to suit Meta-Slate: contact Steadmans for more information.
Steadmans manufacture a range of flashings to match the profiles in matt polyester. Plastisol leathergrain, Nova, Scintilla, galvanised and PVDF finishes also available. Flashings can be supplied in lengths up to 6m in traditional profiles, or can be shaped to meet special customer requirements.
Steadmans supply a range of NFRC Class A butyl sealants, profile foam fillers and expanding foams to enable profiles to be sealed to other building components, so avoiding thermal bridging and air leakage.
Meta-SlatePlus is a roofing sheet that has the appearance of natural slate but embodies the advantages of a modern lightweight but strong building material. Meta-SlatePlus is manufactured from 0.7mm galvanised coil with a slate blue matt polyester paint finish to the outer surface and a grey epoxy based primer to the inside. The sheet is specially embossed with a regular slate pattern and finished to appear like natural slate. Other external colours and finishes are available by special order subject to quantity and coil availability. Meta-SlatePlus is ideal for use in environmentally sensitive locations where box profile sheeting may not be acceptable to local authority planning departments. Meta-SlatePlus is extremely easy to fit and boasts a beautifully simple secret fix joint system. Meta-SlatePlus roofing sheets are available in lengths up to 6m.
The AS35 insulated panel consists of two coated steel profiles bonded to a core of PIR insulation. The metal sheets are made from either Z275 galvanised steel or AZ150 aluminium-zinc coated steel to BS EN 10346:2009. The top profile is 0.5mm thick, and the internal liner 0.4mm thick, and are both covered by a choice of one of several organic coatings. Panels are available in lengths of 1.8m to 12m and in thicknesses of 40, 60, 70, 80, 90, 105, 115, 120 and 137mm.
Meta-SlatePlus is designed to provide a strong, rigid slate effect roof with good thermal performance down to a 10° pitch. The system includes a comprehensive range of clips, jointing pieces, flashings, end closures, sealants and coated steel or plastic gutters and downpipes.
The Meta-SlatePlus system offers rapid coverage and swift completion of a weatherproof building envelope to give a high performance building. To download a pdf of the Meta-SlatePlus overview brochure, click here.
Performance, design & sitework
Performance data, design guidance, design details and sitework instructions for the AS35 panel is contained in the ‘AS35 Insulated Roof & Wall Panels’ technical brochure To download a pdf of the AS35 brochure, click here.
Fixing Meta-Slate roofing sheet over an AS35 insulated roofing panel
The installation of the Meta-Slate roof sheets over the AS35 panels is very similar to the installation over rafter/purlins. The roof sheets are fixed every third raised section of the AS35 panel using 5.5mm by 25mm self-drilling screws. The screws are fixed through the overlap between panels so that the screw is driven through two thicknesses of the metal top sheet (fixed at a maximum of one per metre of panel length). The frequency of fixing can be increased around the edges of the installation or where special detailing is required.
Note: the projects shown here are examples of roofs fitted with the Meta-Slate roofing sheet.