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EPDM Rubber Roofing Kits
Shop MGN’s EPDM roof kits for suitable flat and low-slope roofs on sheds, garages, garden rooms and similar buildings. Each rubber roof kit includes a one-piece 1.2mm EPDM membrane, adhesives, trims, corners and fixings for a straightforward roof installation. Compare the membrane dimensions with the finished roof measurements and allow for edges, upstands and other roof details before ordering.
EPDM Rubber Roofing Kits for Sheds, Garages and Garden Rooms
MGN’s rubber roof kits contain the main materials needed for suitable flat and low-slope roofs on sheds, garages, garden rooms, extensions, porches, canopies and more. Each rubber flat roof kit includes a one-piece EPDM membrane, adhesives, trims and corners. Choose the kit from the finished roof measurements and details, not the building type alone.
How to Choose the Right EPDM Roof Kit Size
Measure the roof at its longest and widest points before comparing EPDM roof kits. Check how much membrane is needed for raised edges, wall upstands and other roof details. Do not choose a kit from its square-metre coverage alone.
For example, a roof measuring 2.5m × 3.5m covers 8.75m², but the 3m × 3m kit would still be too short in one direction.
| EPDM roof kit | Nominal kit area | Supplied membrane size | Typical Applications |
|---|---|---|---|
| 3m × 3m EPDM Roof Kit | 9m² | 3.05m × 3m | Small sheds, porches and compact outbuildings |
| 3m × 4m EPDM Roof Kit | 12m² | 3.05m × 4m | Medium sheds, canopies and small garden rooms |
| 4m × 4.5m EPDM Roof Kit | 18m² | 4.58m × 4m | Larger sheds, garden rooms and compact garages |
When choosing an EPDM shed roof kit, measure the finished roof deck rather than relying on the advertised shed size. If none of the preset kits fits, compare our EPDM Rubber Roof Membranes to find a more suitable membrane size.
What Is Included in an EPDM Roofing Kit?
The current EPDM roofing kits available from MGN include:
- one continuous 1.2mm EPDM membrane;
- 5 litres of water-based roof deck adhesive;
- two 750ml contact adhesive aerosols;
- edge trims and two gutter trims;
- four external corners, joining clips and trim fixings.
The water-based adhesive is used on the main compatible roof deck, while the contact adhesive is used at suitable edges, upstands and roof details. Rubber roofing kits contain set amounts of adhesive. If the roof needs more adhesive or a compatible primer for extra tape or flashing, visit our EPDM Adhesives & Primers range.
When Does an EPDM Roof Kit Need Extra Components?
The kits cover the main requirements of a straightforward roof, but extra products may be needed for repairs, wall connections, pipes or different drainage arrangements.
- If your project only needs a small repair and the remaining membrane is in good condition, look at EPDM Roof Tapes & Flashing. This may be quicker and cheaper than replacing the whole roof covering.
- If rainwater must pass through an internal or horizontal outlet, choose the correct product from EPDM Roof Outlets & Drainage.
- If the roof meets a wall or parapet, or needs a different edge finish, compare EPDM Roof Trims & Edge Profiles instead of assuming the standard kit trims will fit.
Before Installing a DIY Rubber Roof Kit
A DIY rubber roof kit can be suitable for a straightforward project, but check the roof and working conditions before installation:
- Confirm that the roof structure and deck are suitable.
- Make sure the roof has a suitable fall for rainwater drainage.
- Check that the roof deck is smooth, clean and completely dry.
- Check that the weather and temperature meet the adhesive requirements.
- Allow the membrane to relax before applying the adhesive.
- Prepare the required roofing battens, tools and safety equipment.
Suitable rollers and extra fixings are available from our EPDM Roof Tools & Fixings range. Use each membrane, adhesive and trim for its stated purpose, and get professional advice if the roof design or structure is unclear.
Buy EPDM Roof Kits from MGN Builders Merchants
Whether you are choosing an EPDM garage roof kit or a rubber roof kit for garden room construction, compare the membrane dimensions, listed coverage and included parts before ordering. Check whether the roof also needs extra trims, flashing or drainage products.
Shop the live EPDM roof kits above and enter your postcode to check current availability and delivery options, or choose Click & Collect at checkout.
FAQs
What weather and temperature conditions are suitable for installation?
Install the EPDM membrane in dry weather when the air and roof-deck temperatures are between 5°C and 30°C. Do not apply the adhesives to damp surfaces, standing water or condensation. Avoid installation if rain is expected before the adhesives have cured or if freezing temperatures are expected within 24 hours. The water-based adhesive must be protected from frost.
How much extra membrane should be allowed for edges and upstands?
It is recommended to allow approximately 150mm of extra membrane at each edge or upstand where the membrane needs to be dressed, turned or trimmed. Measure each roof section carefully and include this recommended allowance when selecting the membrane size, as the amount required can vary depending on the roof design and edge details.
Which roof deck materials are suitable for these EPDM kits?
The membrane can be bonded to suitable plywood or compatible OSB roof decking. The deck must be firm and free from damage, with a smooth, clean and completely dry surface without sharp edges. Confirm compatibility before using the supplied adhesive on any other deck material.
What is not included in an EPDM roof kit?
Roof-deck boards, 25 × 50mm perimeter battens, insulation, vapour-control layers, gutters, downpipes and roof outlets are not included. Specialist tapes, primers, flashing materials, installation tools, access equipment and safety equipment must also be purchased separately where required. Only the components listed in the selected kit contents and shown in its product image are supplied.
Will the supplied trims fit every roof layout?
No. The supplied trim quantities are intended for a straightforward rectangular roof with one gutter edge. Roofs with additional drainage edges, wall junctions, parapets, penetrations, internal corners or irregular shapes may require extra trims and specialist detailing products.
Does the supplied gutter trim replace the guttering?
No. The gutter trim finishes the membrane at the drainage edge, but it does not replace the gutter, downpipe or roof outlet. The required rainwater system must be selected and installed separately.
Can an EPDM kit be installed over an existing roof covering?
An EPDM kit can be used for roof refurbishment when the existing roof base is suitable, but it should not automatically be bonded over every old covering. The roof must be inspected for moisture, damage, movement and contamination. The existing covering may need to be removed or covered with a suitable replacement deck. EPDM must not come into contact with oils, petroleum products, grease or hot bitumen.
How long should the EPDM membrane relax before bonding?
Lay the membrane loosely over the prepared roof and allow it to relax for approximately 30 minutes before applying the adhesive. This gives the folded membrane time to settle naturally before it is bonded to the deck.