Mercia 19mm Grizedale Log Cabin - 4m x 3m

Mercia 19mm Grizedale Log Cabin - 4m x 3m

Product code
Mercia Grizedale Log Cabin - 4 x 3m is rated 3.5 out of 5 by 6.
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£2,499.99 £2,199.99
Save £600.00
In Stock

FREE Delivery to most of UK Mainland

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  • Overview
  • Reviews (6)
  • Delivery
  • Returns

Make the most of your garden space by adding a stylish, practical and high-quality log cabin from Mercia Garden Products.

This Grizedale Log Cabin is a stylish, focal point for your garden. Big enough for a home office or simply a space to relax. It's made from high quality, durable, interlocking 19 mm thick timber. The single-glazed, double doors and three opening windows let light stream into the room, and allow for a nice breeze.

This unit utilises a strong and robust 19mm log plank design with a single tongue joining system. This durable and sturdy construction offers excellent value as well as a traditional style finish but with a contemporary feel. Great for adding that something special to your garden while also making the most of your outdoor space.

(Please note: Images are dressed and painted for display purposes only)

Features and Benefits

  • Durable – This sturdy and strong garden building is constructed from robust timber and joints giving you a long-lasting and resilient structure.
  • Made in the UK – This garden building is made here in the UK, by Mercia's highly skilled workforce. Mercia manufacture this building using only ethically sourced timber, coming from responsibly managed forests.
  • Self-assembly – This is a two-person job but can be completed without any professional help needed. All assembly instructions are included.


  • 10 Year Anti Rot Guarantee
  • Heavy Duty Mineral Felt Included
  • Secure Lock & Key Double Doors
  • 19mm Tongue & Groove Walls
  • 12mm Tongue & Groove Floor and Roof
  • High Strength SAN Styrene


Grizedale Log Cabin – 4m x 3m

Overall Width (Inclusive of Roof Overhang)


Base Width


Overall Depth (Inclusive of Roof Overhang)


Base Depth


Ridge Height


Eave Height


Width (Bottom Board)


Depth (Bottom Board)


Internal Width


Internal Depth


Internal Ridge Height


Internal Eave Height


Wall Cladding Thickness



12mm T&G

Bearer Direction

Side to Side

Bearer Size

44mm x 44mm


12mm T&G


Double Door Half Board

No. of Doors




Glazing (Type)

High Strength SAN Styrene

Felt Type

Green Mineral Felt


Black Antique

Installation Service

Merica offer an installation service on selected garden buildings to make your new garden addition a hassle-free investment.

Installation service



Mercia's aim is to make your installation experience as easy as possible, with minimal disruption as possible to your normal routine. To enable this their garden building installation service is as follows...

Once your order has been processed Mercia will send you an email to confirm your order and all the necessary information to ensure your garden is suitable and prepared for installation. It's vital to make sure you have a firm, level base ready to install onto.

Once evidence has been provided of your firm, level base, our friendly customer service team will call you to book in a delivery and installation date that suits you. This will typically be the same day, however, for some buildings it may be different days.

On the day of delivery, we will send you a text to confirm your two-hour delivery slot and a link to the delivery portal, where you will be able to track the exact location of the driver.

Your new garden building will be delivered on a flatbed van. Please make sure there is adequate access to the build site without going through your house, garage or neighbouring property. Providing all is OK, the installation team will move the building into the installation position.

The team will then install your new building as per the product instructions. Once completed, the team will make sure to clean up afterwards, leaving you to relax and enjoy your new garden building.

Reviews (6)
Rated 2 out of 5 by from You get what you pay for! Says on instructions 2 men 1 day to build .....it's 2 days at least!! A lot of the wood had knot holes , some tongues broken off and splits, some quite badly warped including one of the doors! Suggest buying your own bolts for the slave door they're a bit piddly, on the whole it's a posh shed but does actually look good.
Date published: 2021-06-29
Rated 5 out of 5 by from Great value product Great value for money. If you've got a solid level base this building is great. 1 day to build from start to finish, easy to erect, clear instructions and loads of materials to complete. You cannot buy the materials to build one from scratch any cheaper. Very happy customer.
Date published: 2021-01-26
Rated 3 out of 5 by from Average If like me you intend on insulating and boarding out the internal walls of this then it will be fine, if not the it is extremely flimsy, especially the long 4m wall. I think if you pushed on it hard enough the wall would collapse. It really needs strengthening. The "windows" are also very flimsy as they are just sheets of acrylic slotted in so they will also need to be doubled up which I intend to do. On a positive note it is easy to construct despite the very vague instructions and can be done alone as I did, I built it in around 15 hours. There seems to be plenty of spare buts too incase some pieces are split it damaged. Delivery was also great and the driver was polite. All in all you get what you pay for so at £1200 you're not going to get £3000 quality
Date published: 2021-01-01
Rated 5 out of 5 by from Mercia 19mm Grizedale log cabin 4m x 3m Well thought out cabin and very professionally constructed .
Date published: 2020-12-16
Rated 5 out of 5 by from Easy peasy Arrived earlier than we expected. Lots of extra wood, felt and screws provided. Very happy with our log cabin. Took 2 days to complete (one man and his wife :) ) We're using it to replace our gazebo bar and after adding a heater we are snug as bugs in a rug.
Date published: 2020-12-09
Rated 1 out of 5 by from Very flimsy My dad and husband have now spent over a week putting this together- it is so flimsy and we have had to buy extra 4by2 timbers to reinforce the floors and walls- pieces don’t fit together, some where broken and it’s been an absolute shambles due to the poor quality of the product! I would definitely avoid! Everything is weak- there’s no way you could attach anything to the walls, it moves about in even the slightest of wind! Absolutely awful product! Do not buy!
Date published: 2020-11-14
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Vendor Direct Products:

This product is delivered by our approved supplier on a Standard Delivery Service.

Please be aware that we currently cannot arrange for delivery of this product to the following postcodes: AB, FK, HS, IV, KA, KW, PA, PH, ZE, LL58-LL78, IM, TR, BT, PO30-41.



In the UK you have a legal right, under the Consumer Contracts Regulations June 2014, to cancel your order within fourteen (14) days following your receipt of the goods. Refunds for orders cancelled under the provisions of the Consumer Contracts Regulations will be processed in accordance with your legal rights.

You may not cancel orders for the following types of products:

  • Electrical/Technical products which have been unsealed
  • Customised or bespoke Products
  • Anything of a nature that for hygiene or associated health and safety - this includes the Outdoor Spas, Mattresses and Divan Sets
  • Fresh food

Under the Consumer Contracts Regulations June 2014 you have a duty to take reasonable care of Products whilst they are in your possession. You will receive a full refund of the purchase price of the Products.

This is not intended to be a full statement of your rights under the Consumer Contracts Regulations. Full details of your rights are available from your Local Authority’s Trading Standards Office.

How To Return A Product

If you wish to return your item to Robert Dyas, you can do so by the following method:

1. Request a Collection via Robert Dyas Customer Services

Contact our Customer Services team on 0333 103 6677 (Monday- Friday 08:00 - 19:00, Saturday & Sunday 09:00 - 17:00, Closed Bank holidays. - call charges may vary by network) or via email to: customerservices@robertdyas.co.uk who will be able to arrange a collection for your item with the supplier. Please ensure that you provide your order number when contacting customer services.

If you are returning the item under your 14 day right to cancel, then a collection charge will be applied:

  • Products < 20kg: £7.50
  • Products > 20kg: £30

If you are not at home when we try to collect we reserve the right to deduct from your refund or charge your credit card the direct costs to us of the failed return in accordance with the Consumer Protection (Distance Selling) Regulations 2000.