by Fmeaddons

TapcoSlate Classic

slate… but not as you know it!

Whether you have a conservatory, modern house or a listed building, TapcoSlate Classic adds splendour, elegance and tradition to your home. It is authentically shaped with textured surfaces and riven edges moulded from authentic slates that make TapcoSlate Classic almost indistinguishable from natural slate – yet it has an even more refined appearance. TapcoSlate Classic will not crack, break or delaminate, and its product formulation and manufacturing processes provide durability, performance, and longevity for many years to come. By providing a lightweight and easily-installed product, installation costs are lower, with less waste!

  • Lightweight – as low as 12kg per square metre.
  • Easy to install with pre-marked nailing and exposure guides and spacers.
  • Easily cut with a fine-toothed saw or sharp utility blade.
  • Built-in camber for tighter fit when fixed in situ.
  • No sorting, clipping, or drilling prior to roof loading. Packaged in bundles of 25 for easy handling.
  • Fittings (ridges and hips) are mechanically fixed.
  • Choice of colours (6 standard colours stocked for immediate availability).
  • 40-year warranty.
  • Local Authority Building Control (LABC) Registered Details product.
  • Fully tested to BBA, ETA and CE standards, including fire rating, wind, driven snow & rain, and water absorption.
  • TapcoSlate Classic is not made from recycled plastics but is manufactured from recyclable virgin limestone and polypropylene.
** The ONLY BBA approved synthetic slate with minimum pitch capability of 14.5° on felt and batten and fully boarded roof applications **
Want a thicker, HAND CARVED slate look? Then check out our new
TapcoSlate ALEDORA product
LABC Registered Details is a one-off certification process proving compliance with building regulations and standards across England and Wales.
*CLICK HERE* to view our TapcoSlate Classic Registered Details


Ideal for New Build, Self-build, Modular Buildings, Renovation, Extensions, Conservatories, and Garden Rooms

Roofing slate has for centuries been desired for its durability and aesthetic appeal, but it does have drawbacks with its weight, pitch restrictions and brittleness. British Board of Agrément (BBA) certified and LABC Registered Details TapcoSlate Classic combines all the positive features of this beautiful, natural product, but adds practicality and enhanced performance to create a gorgeous roof that won’t break or delaminate, survives substantial impact, is very light in weight, easy to install, no sorting, clipping or drilling, has a 40-year warranty, can be used on lower pitches than those achievable with natural slate and overall roof costing is very competitive.

TapcoSlate Classic Mixes are another feature of our unique colour choices, they deliver uncommon elegance through boldly-appealing multiple colours to turn your roof into a work of art.

Ask about obtaining a FREE sample tile today and see for yourself why more and more people are turning to synthetic slate!

Depending on lighting conditions, our roof tiles will reflect varying levels of color intensity. Actual colors may vary from those shown on the screen, free samples are available on request.

TapcoSlate Classic Roofing Accessories



Download our Product Brochure
Download our Fixing Guide
Download our LABC Registered Details Fact Sheet
Download our LABC Registered Details Certificate
Download our BBA Certificate
Download our Warranty
Download our ETA Certificate
Download our Declaration of Performance
Download our TapcoSlate Fire Safety Report Part 1
Download our TapcoSlate Fire Safety Report Part 2
Download our LEED Specification
Download our Wind Performance
Download our Chemical Compatibility
Care and Maintenance of your TapcoSlate Roof




Q. How is it fixed?

A. Galvanised steel nails driven through the slate, either manually or by nailgun. No drilling, clipping or hooks required.

Q. How many are needed. What’s the coverage?

A. Depends on the pitch of the roof, please see our Measuring Guide tab.

Q. How shallow a pitch can they be used on?

A. 14 degrees (on a fully-boarded roof). This is very useful for extensions and other applications where the available roof slope may be limited.

Q. Why are they curved? A natural slate is flat.

A. This is intentional. The induced camber flattens and creates a tight fit when nailed in situ.

Q. Is an eaves (soldier course) needed?

A. Yes. Standard slating principles apply.

Q. Does TapcoSlate Classic have third-party accreditation?

A. Yes. BBA certified. Copies readily available.

Q. How are the ridges/hips fixed?

A. Nailed in situ and overlapped. Dry-fix system much more secure than a bedded ridge. Cement does not adhere well to TapcoSlate Classic.

Q. Is it colourfast or does it fade or go white?

A. No TapcoSlate Classic is UV stable and through coloured. It will weather, as does any roof covering, depending on location and exposure.

Q. How is it cut?

A. Fine-toothed saw, disc cutter, or it can be scored with a utility knife.

Q. Will moss/algae grow on TapcoSlate Classic?

A. Once again, this depends on the location and exposure of the site. Algae grows better on a laminar material, TapcoSlate Classic is not laminar. To deter growth, string a copper wire across the length of the ridge.

Q. Is it a “green” recycled product? What’s it made from?

A. It’s not recycled… but it’s RECYCLABLE. TapcoSlate Classic is made from limestone and virgin resins. Consequently there is greater control over the mix and the manufacturing process. The main problems experienced with using reclaimed inconsistent raw materials are due to the lack of control in the manufacture which can result in splitting, curling, etc. There are no such problems with TapcoSlate Classic.

Q. How is it packaged/delivered?

A. Individually strap-banded bundles of 25 slates… 1600 per pallet (or less). There is a delivery charge depending on location.

Q. Can it be used for vertical cladding?

A. Yes.



Please note: TapcoSlate, TapcoShake, and Tapco Roofing Products are known as the InSpire Roofing Products line in the USA. Installation techniques differ between the US and other countries, please view our Installation Guide for UK techniques.


When you contact us, our representative will guide you as to how many TapcoSlate Classic units you will need to cover your roofing project. However, the general idea is to measure how many square metres your roof covers and what pitch (and therefore which gauge) your roof is. The following table explains how this is calculated:

14.5* to 25 degrees (fully boarded or felt & battens) 6″ (152mm) 22
25 to 27.5 degrees (fully boarded or felt & battens)6.5″ (165mm)20
27.5 to 30 degrees (fully boarded or felt & battens)7″ (178mm)19
above 30 degrees (fully boarded or felt & battens)7.5″ (191mm)18

* The minimum recommended pitch and lap may be influenced by special circumstances, please contact our technical department for advice.
Note: Advice from our technical department should also be sought when installing on high buildings and/or in exceptionally windy areas.


Roof pitch (slope really, but it is known as pitch) refers to the amount of rise a roof has compared to the horizontal measurement of the roof. The picture opposite shows the pitch of a 7:12 roof slope meaning that for 12″ of horizontal measurement (roof run) the vertical measurement (roof rise) is 7″. This measurement is best done on a bare roof, but If this isn’t practical then perform the same measurement on the underside of the roof (loft).

So what does the 7:12 in the example to the right mean? The 7 means that the roof rises 7″ for every 12″ it runs, simply mark a level at 12″, hold it perfectly level and measure from the roof surface to your 12″ mark, this will give you the rise. To convert this measurement to degrees, please see the table below:

Roof Pitch – Rise and Degrees
Roof Pitch – Rise and Degrees


Each TapcoSlate is marked with a fitting gauge which is determined by the Roof Pitch (see above). The gauge is pictured on the right. How many slates you need to cover your roof per square metre depends on the gauge and increments according to your roof pitch.

Once that you have the first layer of slates on your battens, the next layer (and onwards to the ridge) should be layered on top. The gauge, on both sides of the slate, is then placed onto the very top of the laid slate and moved up or down according to your roof pitch. The gauge has 4 markers – 6″ (14 to 25 degree pitch), 6.5″ (25 to 27.5 degree pitch), 7″ (27.5 to 30 degree pitch), and 7.5″ (above 30 degree pitch).


A square metre is a metric measurement of area. If the area involved in your roofing project is square or a rectangular, measure the length and width of the area, using a metric tape measure or a meter stick. Multiply the length, in metres, times the width, in metres. That will give you the area of the square or rectangle in square metres.

If the area involved is not square or rectangular, sketch the area to scale on a piece of graph paper. You can make sure that it is to scale by allowing each division on the grid to equal a certain number of metres. Break up the sketch into rectangles, squares, triangles, and even circles, if necessary. Apply the appropriate metre-based formulas to each shape on the graph to determine the area of each shape in square metres. Multiply length times width for squares and rectangles. Multiply base times height and divide by two for triangles. Measure from the centre of a circle to its outer edge to find the radius; then multiply the radius times itself and multiply that figure by 3.14, which is “pi.” Add the areas of each shape to find the square metres of the entire area.

To recap, if your roof is 8 metres high by 10 metres long, this equals 80 square metres, times this by 2 sides of the roof equals 160 square metres in total. If your roof is 24 degrees, and therefore the TapcoSlate gauge is set at 6″ increments, you will fit 22 TapcoSlates to every square metre – 160 x 22 – you will therefore require 3,520 TapcoSlate Classics in total. TapcoSlate Classics are bundled in packs of 25 and so you will need 141 bundles (in total 3,525 units would then be ordered). Please note that you will also need a starter or eaves course. TapcoSlate Classic uses a cut three-quarter TapcoSlate Classic tile (see fixing instructions), 3.5 tiles per linear metre, so in this example you would also need to cover 2 x 10m = 20 linear metres, times 3.5 tiles per metre = 70 extra TapcoSlate Classic slates to use as starter tiles. These are sold in bundles of 25 so you will need 3 bundles (in total 75 starter tiles would then be ordered). Overall this example roof would need 166 bundles (3600 units) of TapcoSlate Classic slates.

Please Note: The details on this page are for guidance only, and the Tapco Group will not be held responsible for any incorrect measurements undertaken by you or your architect or roofing contractor. It is your sole responsibility to ensure that any measurements and quantities ordered are correct.


CONSTRUCTION:Manufactured from a recyclable blend of limestone and polypropylene.
SIZE (SLATE):17.5” x 11.6” (445mm x 295mm) (including horizontal spacers)
WIDTH (SLATE):0.20” (5mm)
SIZE (RIDGE CAP):5.9” x 17.5” (150mm x 445mm)
MINIMUM PITCH:14° (fully boarded roof)
14.5° (felt/batten roof)
GAUGE:6” at 14° to 25°
6.5” at 25° to 27.5°
7” at 27.5° to 30°
7.5” above 30°
Please also see coverage/gauge table on the Measuring Guide Tab above or the Fixing Guide
COVERAGE (SLATE):22 slates/sq. metre at 14° to 25°
20 slates/sq. metre at 25° to 27.5°
19 slates/sq. metre at 27.5° to 30°
18 slates/sq. metre above 30°
Please also see coverage/gauge table on the Measuring Guide Tab above or the Fixing Guide
COVERAGE (RIDGE CAP):5.5 per linear metre
COVERAGE (HIP):5.5 to 6.5 per linear metre (depending on gauge)
PACKAGING:Pallet: 1600 Slates (1.04 tonnes)
Bundle: 25 slates (16.25kg)
BATTEN SIZE:2” (50mm) by 1” (25mm) treated battens (minimum)
FIXING:Large-headed galvanised 1.2” (30mm) by 0.1” (2.5mm) steel nails (using hammer or nail-gun). Aluminium or copper nails may also be used, but driving them through the slate may cause bending. Longer 3” (76mm) nail required for fixing ridges and hips.
CUTTING:Fine-toothed handsaw, jigsaw, circular saw, or sharp utility blade.
STORAGE/TEMPERATURE:TapcoSlates should not be stored on roof decks in such a manner as to over-stress and/or damage the deck and supporting structure.
Cold Weather Installation: TapcoSlates should be stored in original packaging in a storage facility where the temperature meets or exceeds 7°C. Use protective coverage over all pallets while being temporarily stored on-site. TapcoSlates must be conditioned at a temperature no lower than 7°C for twenty-four (24) hours prior to use. TapcoSlate may be installed at temperatures as low as 0°C but must be hand fastened, the use of a pneumatic gun below 7°C will result in cracking and webbing in the fastened area. Be sure to follow the manufacturer’s installation requirements for all underlay or membrane and any other applications. Comply with any and all local building regulations. Note of Caution: The slates can be slippery under certain conditions and job site safety procedures should be enforced.
ACCELERATED ULTRA VIOLET EXPOSURE:Slate exhibited virtually no fade and with no trace of cracking or splitting.
FREEZE-THAW CYCLE:No signs of damage or cracking after 300 cycles.
WATER ABSORPTION:No appreciable weight gain.
WATER PERMEATION:late shown to be impermeable.
TEMPERATURE CYCLING:No signs of cracking, curling, deformation, or visible expansion.
WARRANTY:40-years. Please see our Warranty Document for further information.





Strength — the products have adequate strength to resist the loads associated with the installation of the roof.

Properties in relation to fire — the products will enable a roof to be unrestricted under the Building Regulations.

Liquid water penetration — the products resist the passage of moisture into the building.

Durability — under normal service conditions the products will provide a durable covering with a service life of in excess of 20 years.

Please view our BBA Certificate for further details.

ETA 16/0571 of 12/09/2016

The European Technical Assessment (ETA) is an alternative for construction products not covered by a harmonised standard. It is a document providing information on their performance assessment. The procedure is established in the Construction Products Regulation and offers a way for manufacturers to draw up the Declaration of Performance and affix the CE marking. It contributes to the free movement of construction products and the creation of a strong Single Market.

Please view our ETA Certificate or our Declaration of Performance documents for further information.

The CE marking is a visible symbol showing that the manufacturer has taken all necessary measures to ensure that the product complies with the applicable safety legislation. It plays a crucial part in the New Legislative Framework for the EU internal market for goods which entered into force at the beginning of 2010. The New Legislative Framework provides for the appropriate control of testing laboratories and certification bodies, and more importantly sets out a Union policy on surveillance of products on the market and of effective controls of products from third countries.

Please view our Declaration of Performance document for further details.


Local Authority Building Control (LABC) Registered Details is a one-off certification process proving compliance with building regulations and standards across England and Wales.

As the only scheme of its kind supported by all local authorities, Registered Details can:

  • Help ensure acceptance by all local authorities across England, Wales and Scotland.

  • Increase industry confidence in the performance and suitability of each registration.

  • Make the building control process faster, easier and cheaper by simplifying the submission route.

  • Provide a ready-made library of rigorously checked systems and products for specifiers.

Please view our LABC Registered Details Fact Sheet or our LABC Registered Details Certificate documents for further information.

Or visit our page on the LABC Website for further details.
FIRE RATING:BS476 Part 3, Boarded Roof SAA, Battened Roof SAC
WIND DRIVEN RAIN & WIND UPLIFT:Miami Dade TAS-100 (110 mph wind-driven rain) No
water infiltration through sheathing. No slate cracked, split or lifted