Forest Mendip 5.0m x 4.0m Log Cabin - Pent Roof, Double Glazed, with Polyester Felt

Forest Mendip 5.0m x 4.0m Log Cabin - Pent Roof, Double Glazed with Polyester Felt

Create a more useful garden space with Forest Mendip 5.0m x 4.0m Log Cabin - Pent Roof, Double Glazed, with Polyester Felt. Built around a modern pent roof, this log cabin offers a flexible setting for hobbies, home working or everyday storage. It is a strong option for anyone looking at log cabins for the garden that need to feel both practical and inviting.

The Forest Mendip 5.0m x 4.0m Log Cabin is a spacious and contemporary garden building that combines premium construction with a sleek pent roof design. Offering approximately 17.5m² (188ft²) of internal floor space, it's an excellent choice for anyone looking to create a large home office, garden lounge, hobby room, gym, entertainment space, or a stylish extension to their living area. Designed with generous glazing and robust timber construction, the Mendip delivers comfort, versatility, and long-lasting performance for year-round enjoyment.

Bright, Spacious and Exceptionally Versatile

With two large front windows, a full-height side window and glazed double entrance doors, the Mendip is flooded with natural daylight, creating a bright and welcoming environment throughout the day. The spacious interior provides ample room for a variety of layouts, whether you're designing a professional home office, combining a workspace with a lounge, creating a dining area, or building your own garden games room or gym. The ¾-length side window can be installed in either the left or right-hand wall during construction, giving you added flexibility when planning the layout of your garden. Internal floor dimensions of approximately 4.7m x 3.7m provide generous wall space for desks, storage units, shelving, seating, or larger furniture.

Premium Nordic Spruce Construction

Built from slow-grown Nordic Spruce, the Mendip features substantial 45mm interlocking log walls that provide excellent structural strength, natural insulation, and long-term durability. Both the roof and floor are manufactured using heavy-duty 19mm tongue and groove boards, creating a solid and stable structure suitable for everyday use. The cabin is fitted throughout with double glazed toughened glass, while all three opening windows feature convenient tilt and turn mechanisms, allowing you to choose between secure ventilation or fully opening the windows. The glazed double doors are fitted with a secure mortise locking system, helping to keep your cabin safe and secure.

Durable Polyester Felt Roofing

This model is supplied with a 24kg polyester felt roof without underlay. The polyester-reinforced felt provides significantly greater tear resistance than traditional mineral felt and, when correctly installed, offers an expected lifespan of up to 15 years. For even greater weather protection, Forest also offers upgraded roofing options with black sand felt underlay or a heavier 34kg polyester felt. The cabin is supplied untreated and kiln dried, allowing you to apply your preferred timber preservative or decorative finish after installation. Forest recommends applying a suitable solvent-based timber preservative immediately after assembly. All deliveries are completed using a crane off-load vehicle, with optional professional installation available. For best results, the cabin should always be erected on a solid, level base, such as poured concrete.

Product Features

• Large contemporary 5.0m x 4.0m pent roof log cabin.
• Approximately 17.5m² (188ft²) of internal floor space.
• Ideal for home offices, lounges, gyms, studios, hobby rooms or entertainment spaces.
• 45mm thick interlocking log walls.
• Double glazed toughened glass throughout.
• Three opening tilt and turn windows.
• Full-height side window can be installed on either side.
• Glazed double entrance doors with secure mortise locking system.
• 19mm tongue and groove roof and floor boards.
• 24kg polyester felt roof.
• Manufactured from slow-grown Nordic Spruce.
• Manufactured using FSC® certified timber from sustainable sources.
• Supplied untreated for your preferred finish.
• Delivered by crane off-load vehicle.
• Optional professional installation available.

Product Specifications

• Overall Dimensions: 242 x 524 x 466cm (H x W x D).
• Footprint: 500 x 400cm.
• Internal Floor Area: Approximately 17.5m² (188ft²).
• Roof Style: Pent.
• Wall Thickness: 45mm.
• Roof Thickness: 19mm Tongue & Groove.
• Roof Finish: 24kg Polyester Felt.
• Floor Thickness: 19mm Tongue & Groove.
• Material: Slow-Grown Nordic Spruce.
• Treatment: None (Kiln Dried).
• Glazing: Double Glazed Toughened Glass.
• Windows: 3 Opening Tilt & Turn Windows.
• Door Type: Double Doors.
• Door Lock: Mortise Lock.
• Estimated Weight: 3,380kg.
• Country of Origin: Lithuania.
• Roofing Options:
  • 24kg Polyester Felt (No Underlay).
  • 24kg Polyester Felt with Underlay.
  • 34kg Polyester Felt with Underlay.

Why Choose the Forest Mendip Log Cabin?

The Forest Mendip is ideal for homeowners looking to create a spacious, modern outdoor living area without compromising on quality. Its generous floor space, premium 45mm log construction, double glazing, flexible window layout, and contemporary pent roof design make it a superb choice for work, leisure, entertaining, or relaxing throughout the year.

Frequently Asked Questions

Can the side window be fitted on either side?

Yes. The ¾-length side window can be installed in either the left or right wall during construction, allowing you to configure the cabin to best suit your garden layout.

Is the Mendip suitable for year-round use?

Yes. The 45mm thick log walls, double glazed toughened glass, and premium tongue and groove construction provide excellent insulation and make the cabin suitable for year-round use when properly treated and maintained.

Does the timber need treating after installation?

Yes. The cabin is supplied untreated and kiln dried, so a suitable solvent-based timber preservative should be applied immediately after assembly to protect the timber and maximise its lifespan.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.

Multiple Products from the Same Supplier

If you're ordering multiple products from the same supplier, your order will be dispatched together once all items are ready. This means the longest lead time will apply.

If you need part of your order sooner, please call us on 01202 113233. We can arrange a split delivery, although an additional shipping charge will apply.