20 x 6 (5.95m x 1.79m) Shire Mayfield Summerhouse

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20x6 Shire Mayfield Summerhouse - Angle View - Doors open
  • 20x6 Shire Mayfield Summerhouse - Angle View - Doors open
  • 20x6 Shire Mayfield Summerhouse - Angle View - Doors closed
  • 20x6 Shire Mayfield Summerhouse - Front View - Doors open
  • 20x6 Shire Mayfield Summerhouse - Front View - Doors closed
  • 20x6 Shire Mayfield Summerhouse - Side View
  • 20x6 Shire Mayfield Summerhouse - Side Angle View
  • 20x6 Shire Mayfield Summerhouse - Dimensions
  • 20x6 Shire Mayfield Summerhouse - Footprint

Key Features

Bespoke and Made to Measure

Bespoke or made to measure
Bespoke or made to measure
Contact our Sales Teams for more information on our bespoke service

20 x 6 (5.95m x 1.79m) Shire Mayfield Summerhouse

NEW - Guarantee - 10 year - gold

Product Code - 10040136

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Usually delivered: Use Pick A Day delivery below for your earliest delivery date

excludes installation option

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  • 20 x 6 (5.95m x 1.79m) Shire Mayfield Summerhouse£1,959.99


            The 20 x 6 Mayfield Shire Summerhouse is a modern summerhouse with an appealing design. It has a bright interior thanks to the reverse apex roof and multiple windows. The sleek look and impressive design make this the perfect summerhouse for extensive gardens.  

            Upgrade your garden when you buy this large summerhouse. The versatile design allows you to use this big garden room in many ways. It will hold plenty of furniture so you can add a table and chair set for outdoor dining. The straight-cut tongue and groove timber walls fit on sturdy framing to make this a sturdy timber building. The wall panel design and roof overhang help with water runoff. The large wooden summerhouse comes in a flat-pack construction, so it’s a simple job to put it together.

            The reverse apex roof gives you ample headroom inside, and the wide-opening doors make the interior feel airy. The timber summerhouse has an adaptable design. You can choose where the door and windows are fixed on the front elevation.  

            You have four window panels and one door panel, so many configuration options exist. The flexibility of the design allows you to choose the finish to match your allocated space. You can opt for an additional side window for even more light. If you select the optional side window, you can place it on either the left or right side to fit the space you have allocated. 

            The flooring of the summerhouse is made with tongue and groove boards; It’s a finish that makes the interior feel high-end. It makes the floor sturdy and better for holding furniture or other items you place inside.

            Also available: Mayfield 8x6 Summerhouse, Mayfield 8x8 Summerhouse, Mayfield 12x6 Summerhouse, Mayfield 12x8 Summerhouse, Mayfield 16x6 Summerhouse, Mayfield 16x8 Summerhouse, Mayfield 20x8 Summerhouse


            Guarantee - 10-year anti-rot

            Walls - 12mm tongue and groove

            Floor - 12mm tongue and groove

            Roof - 12mm tongue and groove

            Frame - 44mm x 44mm

            Windows - acrylic glazing 4 x fixed front windows, optional side window

            Doors - double doors with full-length acrylic glazing

            Treatment - dip treated (application of preservative and waterproof coat required)

            Make the Most of Your Summerhouse:

            The Mayfield 20x6 Summerhouse is a garden building that will take your garden to a new level. You can furnish the summerhouse in various ways with ample interior space. With such a big interior, you can choose to make it dual-purpose. Make it an intimate outdoor eating area by adding a table and chairs on one side. If you have any hobbies, add a desk and chair to make it a garden craft room on the other side. Want a garden retreat? Furnish it with luxurious garden furniture so you can sip your cuppa or something stronger while enjoying your garden in style. Add gym equipment and a desk to make it your gym and garden office. Or allocate some space for toys so the kids can enjoy the garden all year. You’ll love every minute you spend in your new summerhouse, whatever you choose to do with it. 

            About Your Order:

            The Shire Mayfield Summerhouse is a British-made garden building made from FSC® certified timber. You will get a low-carbon footprint summerhouse made from ethically sourced materials. The practical design makes it straightforward to assemble. It comes with a 10-year anti-rot guarantee and a 12-month manufacturer's warranty. 

            Superior fixings, high-quality roof felt, and optional assembly from the manufacturer is available. The timber boards attach to a solid internal framing to make hard-wearing and sturdy panels. The Mayfield is flat-packed for easy handling and assembly.

            Please note: Images may depict furnishings and accessories; these are for illustration purposes only and are not included with your order. Also the side window is not included as standard and is optional.

            Summerhouse Aftercare:

            The summerhouse has timbers that have been dip-treated to protect them during transit. You must apply a preservative and waterproofing topcoat immediately after installation. Using the treatment after installation, followed by consistent annual treatment of the garden summerhouse, will maintain the high-quality finish and is a requirement of the 10-year anti-rot guarantee. A 1-year manufacturer's warranty is included as standard.

            To treat the summerhouse, elbec recommends Protek wood treatment. Browse our Protek Royal Exterior Wood Finish Paint range to find the best paint colour to add your personalised finish.  In the options section, we’ve also included popular colours and a Wood Preserver+ for use underneath your colour choice.

            About Shire:

            Shire is one of the UK's leading manufacturers of garden buildings. Shire is the proud manufacturer of the most extensive UK timber garden building range. Their range includes Garden Sheds, Log Cabins, Eco Homes, Home Offices, Sheds, Workshops, Summerhouses, Playhouses, Arbours, Storage units, and Pet houses.

            Their UK production facilities cover 23 acres, including stock holding facilities and an advanced high-speed timber planing mill. There is also a modern, well-equipped joinery production facility and semi-automated production lines. All Shire garden buildings are manufactured in the UK using the finest spruce timber, imported directly, and manufactured using the most up-to-date machines to ensure the best quality and best value-for-money garden sheds in the UK.



            FREE delivery is offered to the majority of mainland UK postcodes but some areas may incur a surcharge and some postcode areas are not covered at all. Please check your postcode in the ‘Delivery cost checker’ above to confirm availability and any possible surcharges.

            Delivery Leadtimes
            The estimated delivery lead time for this product is identified on the product page above. Lead times are in working days (Monday - Friday) excludes Bank Holidays. These estimated lead times are provided by the manufacturers and are not guaranteed - due to fluctuation in demand - but are provided in good faith and are representative of delivery at that time. Some remote areas will take a little longer.

            Booking Delivery
            By entering your postal code in the ‘Pick a delivery day. ENTER POSTCODE’ Box above you can select a delivery date. The evening before this delivery date you will be sent a text message (where a mobile has been provided) with an estimated delivery window.  This update can only be provided where a mobile number has been supplied on the billing address section at the time of checkout.

            Upon Delivery
            Delivery is made by Shire the manufacturer. Delivery of this item is typically made by a 17 ton flat-bed (similar size to a council refuse lorry). Delivery is typically between 7am and 7pm. The delivery drivers are only insured to deliver to kerb side or driveway. We would not risk damaging your property whilst delivering a product. Unfortunately we will not be able to go through your property. Deliveries are hand-balled off by the driver.

            We would recommend against arranging for a third party to install the building before it's been delivered and checked that all parts are present, as we cannot be held liable for any third-party costs.

            Installation option
            If you are choosing the installation option after placing your order you’ll be contacted within 5 working days by Shire the manufacturer either by a text message or automated telephone message (the latter if a mobile number is not supplied). This message will supply you with the name of the website to go on to where you will be required to accept the terms and conditions for assembly. Any delay in accepting these terms and conditions may affect your timescale. Once you have accepted these terms and conditions you will be contacted during the timescale with a date for the delivery/assembly of your order. The installation option will extend your lead time by up to 15-25 working days. This may take longer during seasonal periods. Please be aware that the installation team will require full access to your garden, 18" clearance all around the building and a firm and level base. Shire's installation team will not bring a building through your home as they are not covered by insurance to enter a customer’s home.


            Please note: all imperial measurements are approximate and Shire summerhouses are made from metric measurements. We would recommend that the base is at least 50mm bigger in each direction.

            Product Name:
            20 x 6 (5.95m x 1.79m) Shire Mayfield Summerhouse
            Footprint Depth:
            1.79m (5'11")
            Footprint Width:
            5.95m (19'7")
            Ridge Height:
            2.42m (7'11")
            Eaves Height:
            1.99m (6'6")
            Cladding Thickness:
            Treatment Type:
            Dip treated
            Recommended Treatment:
            Protek Range (please click here)
            Manufacturer's Guarantee:
            10 Year Anti-Rot Warranty
            Framing Size:
            44mm x 44mm
            Roof Type:
            Reverse apex
            Roof Material:
            Tongue and groove
            Roof Thickness:
            Roofing Felt:
            Mineral Felt
            Floor Material:
            Tongue and groove
            Floor Thickness:
            Floor Joists:
            44mm x 44mm
            Floor Joist Direction:
            Side to side
            Door Type:
            Double door
            Door Height:
            1.71m (5'7")
            Door Width:
            1.10m (3'7")
            Door Lock System:
            Mortice lock (supplied with 2 keys)
            Number of Window(s):
            4 x Fixed front windows
            Optional side window available
            Window Material:
            3mm SAN Acrylic
            Window/Door Panel(s) Interchangeable:
            Self assembly
            Optional Assembly:
            FSC Certified:
            Free Delivery*:
            Optional Wooden Base:
            Manufacturer's Product Code:
            EAN Number:
            Country of Origin:
            United Kingdom
            Click to View Alternative Sizes:


            The 20 x 6 Mayfield Summerhouse is a large garden building with lots of space for the whole family to enjoy. Multiple windows, a reverse apex roof, and a large footprint make this a versatile wooden summerhouse. The key features include:

            • Modern design with a reverse apex roof
            • 4 fixed large glazed windows  
            • Fully glazed double doors 
            • Shiplap cladding 12mm interlocking tongue and groove
            • 10-year anti-rot guarantee