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Flat Roof Materials

From Classic Bond’s EPDM membranes to Mardome’s skylights, we offer a broad selection of flat roofing materials. Each have been hand-picked by our team to withstand the unique challenges of flat r...

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Common Questions

What is a Flat Roof? 

Any roof with a pitch below 10° could be considered ‘flat’. This is opposed to a pitched roof, which has a pitch above 10° and has a noticeable slope. The difference is important, as you’ll need to use different materials on a flat and pitched roof.

You’ll often find a flat roof on a garage, extension, or garden building. This is due to them being both easy and cost-effective to construct. Although, selecting a material for a flat roof can be a little more challenging.

What Material is Used on a Flat Roof? 

Due to the low angle of a flat roof, you’ll need to use materials designed for low pitched applications. These materials will need to withstand challenges such as ponding water and debris build-up. 

Below are a few the best flat roofing materials. Each has been ‘tried and tested’ for decades, ensuring your roof is watertight and demands little maintenance. These choices suit various budgets and skill levels. 

EPDM

The most common type of flat roofing material is EPDM, a rubber membrane manufactured from ethylene and propylene. This membrane is fully waterproof, very tough, and incredibly long-lasting. 

Unlike other materials, EPDM can be easily installed by both homeowners and tradespeople. Once installed, you can expect your rubber membrane to provide a lifespan of up to 50 years with virtually no maintenance.

Fibreglass 

Another popular solution for flat roofs is fibreglass, a wet-applied membrane that combines glass fibres and polyester. This membrane is fully waterproof, easily maintained, and a long-term solution. 

In addition to offering a lifespan far shorter than alternatives, GRP supplies they can be far more challenging to apply. This is as the various resins must be formulated on-site and conditions must be perfectly suited.

Tar and Gravel

Whilst tar and gravel roofs are more common in the United States, you may find them throughout England, Wales and Scotland too. You build up multiple layers of tar and gravel to achieve a fully sealed, incredibly tough and low maintenance flat roof. 

By far the most difficult material to install, tar and gravel roofs typically demand the help of an experienced tradesperson. It is also accompanied by unpleasant smells and, in some cases, will demand several applications. 

How Much Does a Flat Roof Replacement Cost?

Whilst the cost of flat roofing materials can vary, you can expect to spend between £10 - £20 per square meter. However, this does not take into account the labour costs or equipment associated with installation. 

EPDM and fibreglass membranes are widely considered to be the easiest material to install for both homeowners and tradespeople. Often making them the most cost-effective material with no specialist tools being needed either. 

Tar and gravel, on the other hand, is a far more challenging material to apply. You can, therefore, expect to spend far more on labour and, if undertaking the task yourself, also expect to invest in specialist tools for the job.

What is the Lifespan of a Flat Roof?

The lifespan of your flat roof is largely determined by the material used and the installation process followed. Whilst an EPDM membrane could last as long as 50 years, a fibreglass membrane could last as little as 10 years. 

To maximise the lifespan of any flat roofing material, it’s important to undertake regular maintenance. This is to prevent the build-up of debris, pooling water as well as other nightmare issues.

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Items 1-24 of 228

Skyguard - EPDM Shed Cover Kit

Skyguard - EPDM Shed Cover Kit

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3-5 Days

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Multiple Sizes

Price From:

£53.14

price per item inc vat

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Firestone RubberCover EPDM Membrane - 1.14mm

Firestone RubberCover EPDM Membrane - 1.14mm

Delivery Truck

2-3 days

£11.14

price per item inc vat

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Firestone RubberCover EPDM Membrane - 1.52mm

Firestone RubberCover EPDM Membrane - 1.52mm

Delivery Truck

2-3 Days

£14.32

price per item inc vat

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Best Seller
Classic Bond - Cut to Size 1.2mm One Piece EPDM Rubber Membrane

Classic Bond - Cut to Size 1.2mm One Piece EPDM Rubber Membrane

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1-3 Days

£11.40

price per item inc vat

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Fast Delivery
Classic Bond - Cut to Size 1.5mm One Piece EPDM Rubber Membrane

Classic Bond - Cut to Size 1.5mm One Piece EPDM Rubber Membrane

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1-3 Days

£14.16

price per item inc vat

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Resitrix - Self Adhesive Reinforced EPDM Membrane 2.5mm (10m Roll)

Resitrix - Self Adhesive Reinforced EPDM Membrane 2.5mm (10m Roll)

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2-3 Weeks

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Multiple Sizes

Price From:

£140.56

price per item inc vat

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Fast Delivery
Classic Bond - EPDM Rubber Flat Roof Kit with Trims

Classic Bond - EPDM Rubber Flat Roof Kit with Trims

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1-3 Days

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Multiple Colours

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Multiple Sizes

Price From:

£329.70

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Fast Delivery
Classic Bond - EPDM Rubber Garden Building Roof Kit

Classic Bond - EPDM Rubber Garden Building Roof Kit

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1-3 Days

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Multiple Colours

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Multiple Sizes

Price From:

£175.74

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Wallbarn - M-Tray Wildflower Green Roof Kit with Geotextile Fleece

Wallbarn - M-Tray Wildflower Green Roof Kit with Geotextile Fleece

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3-5 Days

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Multiple Sizes

Price From:

£596.70

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Wallbarn - M-Tray Sedum Green Roof Kit with Geotextile Fleece

Wallbarn - M-Tray Sedum Green Roof Kit with Geotextile Fleece

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3-5 Days

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Multiple Sizes

Price From:

£581.40

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Mardome Trade - Polycarbonate Domed Rooflight - Clear

Mardome Trade - Polycarbonate Domed Rooflight - Clear

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3-7 Days

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Multiple Colours

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Multiple Sizes

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£118.07

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Firestone Wall and Metal Edge Trim Fixings - 6 x 38mm

Firestone Wall and Metal Edge Trim Fixings - 6 x 38mm

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1-3 Days

£1.07

price per item inc vat

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Firestone Aluminium Termination Bar - 3m

Firestone Aluminium Termination Bar - 3m

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1-3 Days

£13.72

price per item inc vat

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Firestone Metal Edge Trim - 50mm x 75mm

Firestone Metal Edge Trim - 50mm x 75mm

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1-3 Days

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Multiple Sizes

Price From:

£15.10

price per item inc vat

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Firestone 12

Firestone 12" Quickseam Formflash - Per Linear Meter

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1-3 Days

£33.23

price per item inc vat

£108.95

per m²

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Firestone 5

Firestone 5" Quickseam Cover Tape - Per Linear Meter

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1-3 Days

£13.55

price per item inc vat

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Firestone Rubber Drain Outlet

Firestone Rubber Drain Outlet

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1-3 Days

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Multiple Sizes

Price From:

£18.22

price per item inc vat

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Firestone Leaf Guard

Firestone Leaf Guard

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1-3 Days

£5.59

price per item inc vat

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Firestone Paving Support

Firestone Paving Support

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1-3 Days

£1.68

price per item inc vat

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Firestone Water Block Sealant

Firestone Water Block Sealant

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1-3 Days

£7.48

price per item inc vat

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Firestone Universal Sealant

Firestone Universal Sealant

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1-3 Days

£7.68

price per item inc vat

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Firestone Penny Roller

Firestone Penny Roller

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1-3 Days

£21.38

price per item inc vat

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Fast Delivery
Classic Bond - Horizontal Drain Water Outlet  - 100mm x 100mm x 500mm

Classic Bond - Horizontal Drain Water Outlet - 100mm x 100mm x 500mm

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3-5 Days

£16.55

price per item inc vat

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Fast Delivery
Harris - 9" Medium Pile Roller Set

Harris - 9" Medium Pile Roller Set

Delivery Truck

3-5 Days

£3.16

price per item inc vat

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Items 1-24 of 228

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