3m x 4m Mercia Trent Garden Pergola - Pressure Treated

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3m x 4m Mercia Pressure Treated Pergola - In Situ
  • 3m x 4m Mercia Pressure Treated Pergola - In Situ
  • 3m x 4m Mercia Pressure Treated Pergola - Angle View Underneath
  • 3m x 4m Mercia Pressure Treated Pergola - Front View Underneath
  • 3m x 4m Mercia Pressure Treated Pergola - Side View Underneath
  • 3m x 4m Mercia Pressure Treated Pergola - Corner View Close Up
  • 3m x 4m Mercia Pressure Treated Pergola - Dimensions
  • 3m x 4m Mercia Pressure Treated Pergola - Footprint

Key Features

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15 Year anti-rot guarantee
15 Year anti-rot guarantee

Pressure Treated

Pressure Treated

Long-lasting protection against rot and fungal decay. No treatment is required,

3m x 4m Mercia Trent Garden Pergola - Pressure Treated

NEW - Guarantee - 15 year - gold

Product Code - 20070008

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excludes installation option

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  • 3m x 4m Mercia Trent Garden Pergola - Pressure Treated£599.99


            The Mercia 3m x 4m pergola is a magnificent and multifaceted adornment for any garden, offering an expansive base for alfresco dining or a peaceful retreat. Its robust wooden construction not only delivers generous sun protection but also gracefully supports climbing plants and hanging decorations, elevating its utility and visual charm.

            This model features sturdy 4x4” posts and substantial 1.5x5” beams that interlock to form a resilient and enduring garden feature. Designed with ease of assembly in mind, the Mercia pergola promises to swiftly transform your outdoor area into a haven of relaxation and enjoyment.

            Crafted in the UK from timber sourced with the utmost consideration for sustainability and regulatory standards, the pergola undergoes a meticulous pressure-treatment process. This essential treatment ensures the pergola is safeguarded against rot, decay, and pest infestation, offering peace of mind with a 15-year Anti-rot Guarantee. An initial waterproof treatment after assembly, followed by yearly upkeep, is required to maintain this guarantee. Upon delivery, the structure requires assembly on a stable, level base, ensuring a foundation for countless moments of garden pleasure.

            Also Available: 3m x 3m Mercia Trent Pergola Pressure Treated Pergola, 

            4m x 4m Mercia Trent Pergola Pressure Treated Pergola


            Guarantee - 15-year anti-rot

            Framing finish - smooth planed timbers

            Treatment - pressure treated for longevity

            Delivered flat-packed for easy assembly

            Make the Most of Your Pergola:

            Your 3m x 4m pergola becomes a canvas for boundless imagination, enabling you to curate a bespoke outdoor sanctuary. Picture a refined dining area under its spacious canopy, where elegant furniture sets the scene for intimate meals or leisurely morning coffees. Illuminate your evenings with strands of soft, glowing fairy lights or enchanting lanterns, creating an inviting ambience that beckons relaxation.

            Embrace the natural world by integrating various plants, such as potted ferns or cascading ivy, which breathe life and tranquillity into your haven. Cultivate climbers like wisteria or honeysuckle along its posts; their spectacular blooms and sweet fragrances will enhance the beauty and allure of your pergola.

            For those passionate about entertainment, reimagine your pergola as the ultimate alfresco theatre or concert hall. A durable outdoor screen or projector and comfortable seating offer a memorable cinematic experience beneath the night sky. Add premium outdoor speakers to envelop your guests in rich, dynamic sound, ensuring every event becomes memorable. This versatile structure invites you to explore a world of possibilities, from serene relaxation to lively social gatherings, all within the comfort of your 3m x 4m pergola.

            About Your Order:

            Every Mercia pergola is a testament to sustainable elegance as it is crafted with precision right here in the UK, utilising sustainably sourced and rigorously regulated timber. The pergolas undergo a meticulous pressure-treatment process to ensure enduring beauty and structural integrity. It protects the timber from rot, decay, and the ravages of insects and also secures your peace of mind with a robust 15-year Anti-rot Guarantee. Please note to maintain this guarantee; the pergola will require waterproof treatment upon assembly and annually after that. Upon delivery, the structure must be constructed and positioned on a stable and level foundation.

            Please note: Images show accessories and furnishings for display only and are not included in your purchase.

            Pergola Maintenance:

            The Mercia Pergola is made from pressure-treated timbers for excellent durability and longevity. These products have an anti-rot solution in the timber structure, improving rot resistance. Mercia Garden Pressure Treated products come with a 15-year Anti-Rot guarantee. The manufacturer recommends that if you want to paint your garden pergola with a different colour, ensure the treatment you choose is recommended for pressure-treated timber.  The manufacturer requires the pergola to be treated with waterproofing upon construction. Applying a water-repellent product to your wooden garden bar is required for even more longevity and extra protection.  

            elbec recommends Protek wood treatment. Browse our Protek Royal Exterior Wood Finish Paint range to find the best pergola paint to add your own finish.

            About Mercia:

            Mercia is one of the best UK garden building manufacturers. They have over 140 years of experience, so you get a summerhouse of the highest quality when choosing Mercia. Mercia combines the latest manufacturing techniques with the best hardwearing materials to produce British-made sheds and summerhouses built to the highest standards.

            Every product Mercia produces is made with safety and exceeding your expectations in mind. When you receive your order, you will immediately see why this is one of the best summerhouse and shed manufacturers. All products are made from ethically sourced materials. 


            ALL DELIVERIES ARE DELIVERED TO KERBSIDE OR DRIVEWAY. All of our Mercia products are delivered flat packed other than fence panels (which are delivered fully constructed), direct to your home, and are supplied with a set of instructions to support assembly.

            Booking Delivery

            You will be required to book your delivery date at the time of placing your order (except for Metal Shed). Our 'Request a Delivery Date' service is available to the majority of areas and you'll find that the majority of the UK postcodes are FREE but some areas may incur a delivery surcharge and some postcodes are not covered at all. Select a 'requested delivery date' by entering your postcode in the 'Request a delivery date' section above. You will also be notified at this time if your area incurs a surcharge or delivery is not covered in your area.

            Prior to Delivery

            On the morning of your delivery date, you'll be sent an update by text with an estimated 2-hour delivery slot (this update can only be provided where a mobile number has been supplied on the billing address section at the time of checkout) together with a link to the manufacturer delivery portal where you'll be able to track your order.

            Please note: Mercia Metal Sheds ONLY - your order is delivered by a courier you will not be notified prior to the delivery. If you are not in on the day of the delivery you will be carded and asked to contact the courier to arrange a new mutual delivery date. The estimated delivery lead time for Mercia's Metal sheds is identified on the product for the metal shed. Lead times are on working days (Monday - Friday) excludes Bank Holidays. These estimated lead times are provided by the manufacturer. Some remote areas will take a little longer.

            Upon Delivery

            Your order is delivered either kerbside or driveway and will be delivered on either a 3.5T, 7.5T or 18T Lorry. Unfortunately due to health and safety and insurance liabilities the driver will not be able to take your goods around to the back of your property but may upon request place the product at the side of the house if there are no access or restriction issues. We would not risk damaging your property whilst delivering a product to an unsafe location. Unfortunately, we will not be able to go through your property.

            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.


            Orders with Assembly 

            The lead time for our installation option is around 7 Weeks from the date of order. With the installation option, the majority of orders will have their delivery and installation on separate days; there will be a small number of orders which will have delivery and installation on the same day. You will be advised by the manufacturer's installation team which category your order falls into.

            Depending on the installation option for your order, you will be contacted within the delivery timescale and given a date for either delivery/assembly on the same date or a separate date for delivery and assembly.


            Please note: all imperial measurements are approximate, and Mercia Garden Pergolas are made from metric measurements.


            Product Name:
            3m x 4m Mercia Trent Garden Pergola - Pressure Treated
            Footprint Depth:
            3.00m (9'11")
            Footprint Width:
            4.00m (13'1")
            Ridge Height:
            2.36m (7'9")
            Eaves Height:
            Treatment Type:
            Pressure Treated
            Recommended Treatment:
            Supplied Treated
            Protek Range (please click here)
            Manufacturer's Guarantee:
            15 year anti-rot guarantee
            Roof Type:
            Floor Material:
            Currently unavailable
            Self assembly
            Optional Assembly:
            FSC Certified:
            × (Sustainably sourced and regulated timber)
            Free Delivery*:
            Manufacturer's Product Code:
            EAN Number:
            Mercia Garden Buildings
            Country of Origin:
            United Kingdom
            Click to View Alternative Sizes:


            Introducing the Mercia Trent Pressure Treated Pergola 3m x 4m, a quintessential addition for those desiring a stylish and functional garden structure. Conveniently flat-packed for ease of assembly, this pergola combines quality and practicality. Key features:

            • Pressure Treated timbers
            • Delivered flat packed
            • Easy assembly
            • 15-year anti-rot guarantee