Forest Chiltern 4m x 3m Log Cabin (34mm) - Double Glazed

Product Code: BAM25174
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The double-glazed version of the Forest Chiltern, this beautiful log cabin is an ideal garden office or garden retreat, elegantly designed and constructed from top-quality materials throughout.

  • 110ft² of internal floor space ready to be transformed into a garden office, garden studio or retreat.
  • 34mm kiln-dried, interlocking log walls
  • 19mm tongue and groove roof and floor with pressure treated floor bearers
  • Glazed double doors with a key-operated lock
  • 2 further 3/4-length windows – double glazing throughout
  • Includes Premium Felt - tear resistant roof felt with a 15-year lifespan

Please ensure a solid, level base is constructed BEFORE your installation date. Installation does not include plastic bases, electrics or other accessories. Please see the installation section below for more details.


Our Premium Felt is twice as tear resistant than standard industry felt and has a 15yr life expectancy. Underlay enhances weather-protection and protects the felt from being disturbed by natural timber movement. Our Superior Felt is three times as tear resistant with a 25yr life expectancy.

  • Accessories
  • x
    Solartech Premium Garden Building Solar Lighting Kit 8 - Suitable for Buildings upto 4m x 4m (14' x 14')

    Solartech Premium Garden Building Solar Lighting Kit 8 - Suitable for Buildings upto 4m x 4m (14' x 14') - £305.99

    The Solartech Premium Solar Lighting Kit 8 is the simplest, safest, most attractive way to light a summerhouse or log cabin, using the latest solar technology for effective interior lighting. This solar kit features 2 floor lamps and 1 table lamp.

    A powerful system, using advanced solar technology and the latest lithium battery know-how, allows these floor and table lamps to run for up to 5 hours every evening with a brightness equivalent to 350lm and 80lm mains bulbs. The battery hub can also charge other mobile devices, a 12v TV, or laptop with 12v adaptor, whilst the fully weather-resistant solar panel is effective all-year-round, ensuring that these garden lights will never go out unexpectedly.

    This solar lighting kit includes 1 x 10w solar panel, 1 x panel bracket, 1 x 10Ah battery hub, 2 x floor lamps, 1 x table lamp, 2 x 3.5w vintage bulbs, 1 x 0.8w vintage bulb, 1 x splitter cable, 1 x fixing pack and an instruction manual.

    Simple to install, using a plug and play system, and supplied with a reassuring 2-year warranty, these solar summerhouse lights are suitable for the Sudbury summerhouse, as well as the Chiltern and Melbury log cabins.

    Installation of solar powered products is not included with any garden building installation service.

    9 different kits are available, so there is advanced Solartech lighting to suit almost any garden building.

    Delivery is free to most UK addresses.

    • 2 floor lamps & 1 table lamp
    • Equivalent to 350lm & 80lm bulbs
    • Advanced, weather-resistant solar and lithium battery technology
    • Plug and play system
    • Battery can charge other mobile devices, a 12v TV or laptop
    • 2-year warranty
    • Suitable for summerhouses and log cabins
    • Installation of solar powered products is not included with any garden building installation service
    • Lamp shades are not included
    • Free delivery to most UK addresses within 15 working days
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Forest Chiltern 4m x 3m Log Cabin (34mm) - Double Glazed Technical Drawing
Brand Forest Garden
Cladding Interlocking logs
Cladding Thickness 34
Construction Type Tongue and Groove
Door Type Double Doors
Size 14' x 11'
Internal Depth 2730
Internal Width 3730
Log Thickness 34
Roof Covering 24kg Polyester Felt
Roof Style Reverse Apex
Guarantee 1 year
Depth at Base 3000
Depth including Overhang 3400
Height at Highest Point 2500
Width at Base 4000
Width including Overhang 4240
Door Height 1730
Door Width 1400
Glazing Material 4mm Toughened Safety Glass
Locking System Key-operated Lock
Number of Windows 2 windows
Floor Material Tongue & Groove
Floor Thickness 19
Packaged Weight 1465kg
Roof Material Tongue & Groove
Roof Thickness 19


Making an ideal garden office or garden retreat, the beautiful Forest Chiltern 4x3m Log Cabin – Double Glazed is elegantly designed and made from top-quality materials throughout.

This log cabin is expertly built from 34mm kiln-dried, interlocking log walls, making it strong, durable and well insulated. The floor and roof are constructed from 19mm tongue and groove cladding, so the floor is suitable for heavy furniture and the roof will keep you protected from the elements.

With a handsome appearance, the reverse apex roof also features Forest's Premium Felt which is heavier, twice as tear resistant than standard industry felt and, with a life expectancy of 15yrs, will last three times as long as standard mineral felt.

In fact, there are 4 roof felt options available:

  1. The Premium Felt, mentioned above, which is included as standard
  2. An optional upgrade to add underlay to the Premium Felt which will add weather protection and protect the felt from timber movement
  3. An optional upgrade to Forest's even heavier Superior Felt with three times the tear-resistance fo standard felt and a super 20-30yr life expectancy, including free underlay
  4. An optional upgrade to felt shingles with underlay, for a more traditional appearance and a 10-year lifespan

We advise upgrading to an option with underlay so your log cabin benefits from enhanced weatherproof protection.

The interior floor space measures 10.2m² (110ft²), allowing room for furniture, computer equipment and more. You gain easy access via glazed double doors, fitted with double glazed toughened glass and a key-operated lock, which will keep your expensive equipment safe. You can position the doors to the left or right-hand side of the front aspect – the choice is yours.

With the addition of 2 further 3/4-length windows, which can be fitted either side of the doors, the interior enjoys plenty of natural light, ideal if you’re reading or working on the computer. These windows are made from double glazed toughened glass and use a tilt and turn mechanism, so can be opened from either the top or the side.

This log cabin is built using FSC®-certified wood, sourced from sustainable, well-managed forests.

You must assemble this log cabin on a solid, level concrete or paved base. As the wood is untreated, you must coat it in a quality wood preservative upon assembly. A professional installation service is available as an optional upgrade.

Free delivery is available to most UK addresses.

  • 34mm kiln-dried, interlocking log walls
  • 19mm tongue and groove floor and roof
  • Built using FSC®-certified wood
  • Includes Premium Felt - tear resistant roof felt with a 15-year lifespan
  • Double glazed double doors with a key-operated lock
  • 2 further 3/4-length double glazed windows with a tilt and turn opening mechanism
  • Windows can be fitted to the left or right of the doors
  • 110ft² of internal floor space
  • Assemble this log cabin on a concrete or paved base and apply wood preservative upon assembly
  • Professional installation service available as an upgrade
  • Roof felt upgrades available
  • Free delivery to most UK addresses

From The Supplier: Forest Garden


"We're proud to be the largest and most trusted manufacturer and distributor of garden timber products in the UK" - Forest Garden

Making British Gardens Great


At Forest, we know a fair bit about fences. And sheds for that matter. In fact, we've been one of the UK's most trusted manufacturer and distributor of quality wooden garden products for over 50 years.


With two sawmills in the UK processing locally-sourced timber, and a Head Office in Hartlebury, Worcestershire, you’ll find our range of garden buildings, fencing, decking and decorative structures for sale across many sites online and in over 3,000 retail stores. From the forest to the doorstep, we are involved every step of the way to ensure we bring you the best product and service.


Well made in Britain


The majority of the timber we use is grown and felled from managed UK forests across Scotland and Wales. After felling, the timber is cut and processed in one of our nearby sawmills and taken to our manufacturing operation in the heart of Britain. It is here our skilled workforce proudly produce the widest range of garden buildings, fencing and structures available in the UK.


All of the products that we sell are dispatched from this site. The final part of their journey is managed by our dedicated delivery department who are responsible for distribution direct to customers' homes by our fleet of vehicles.


Home Grown


We're proud to say that the majority of the timber we use is cut in our very own sawmill from trees grown in the UK.


Not only that, but our range is certified by the Forest Stewardship Council and the majority of our products carry the FSC logo - so you know that our timber is ethically sourced from well-managed, sustainable forests that are replanted for future generations.


(Certification number TT-COC-001790, Issue date 5 March 2015)


Helping Everyone Thrive


We like to do our bit for charity and are proud to support Thrive. Thrive uses gardening as therapy to bring about positive changes in the lives of people living with disabilities or ill health, or those who are isolated, disadvantaged or vulnerable.





"We are excited and proud to be a carbon neutral business. We work with Carbon Neutral Britain, the UK’s leading offsetting initiative provider to offset our environmental impact."

- Forest Garden

We Are Now Carbon Neutral!


We believe that a successful business is also a responsible business. This includes being dedicated to playing our part in protecting the environment, supporting our community and making sustainable choices. It also means that we value our colleagues and their welfare, putting policies into practice to make sure we are an employer of choice in our field. For us, this is a passionate commitment that runs through everything we do.


All of us who work with Forest Garden can be proud of what we do and this is embodied in the 3 fundamental principles - Keeping It GreenSupporting Our Colleagues and Supporting Our Community.

Log Cabin Installation


Forest Log Cabin & Garden Office Installation


Forest Garden provide their own expert fitters to install your log cabin. With dedicated experience installing Forest Log Cabins, they will provide a professional service that is second to none. They aim to carry out installation within 10 working days of the delivery of the log cabin and it is usually quicker than this estimate.


After your order, Forest Garden will send you a detailed document covering the requirements of a suitable base for a log cabin.


Forest Garden do not provide a service for the preparation of the base area or for installation of electrics, wi-fi, solar lighting or plastic bases. If you require assistance with these, we recommend the use of for locating a reputable tradesperson in your area. Solar lighting packs are designed to be easy DIY assembly.


If you choose to install the log cabin yourself, you can use the detailed guide which includes step by step images to help you. Forest Garden also have a Technical Helpline if you have any questions along the way.


If you are using an independent tradesperson to install your log cabin, please allow enough time for the log cabin to be delivered and the parts inspected before booking your tradesperson.


Please inform customer service BEFORE you order, if you believe there are restrictions which could impact the delivery and installation of the garden room.


Forest Log Cabin DeliveryForest Log Cabin Delivery
Delivery VanDelivery Van


We offer FREE Delivery to the majority of mainland postcodes but some areas may incur an additional carriage charge (see below). Please use our postcode checker further up the page (below the add to basket button) or within checkout to check delivery is available to your area.

£49.99 - BH, BN, CA, CT, DH, DL, DT, EX, IP, LA, LL, ME, NE, NR, PL, PO, SA, SO, SR, TA, TN, TQ, TS

£119.99 - DD, DG, EH, FK, G, IV2,12-13,30-32,36, KA1-25, KY, ML, PA1-19,21-27,32-33,35-38, PH1-31,36-40,49-50, TD. Please allow an additional 5-10 working days for delivery into these postcode areas.

£124.99 - AB

UK MapUK Map


Your delivery will be made between 8am and 6pm on your pre arranged delivery date; our delivery team will contact you to book via phone.

Our service is a Kerb side pallet drop delivery by a crane off-load vehicle. Unfortunately we will not be able to unpack your log cabin and take your goods to the back of the property. We typically plan to deliver to the front garden or drive.

Log cabins are delivered in two packages, flat packed, direct to your home and supplied with a comprehensive set of instructions to help you get started.

Please Note - delivery is NOT available to the following postcode locations: BT, GY, HS, IM, IV1-11,14-28,40-63, JE, KA26-28, KW, PA20,28-31,34,41-80, PH32-35,41, PO31-41, TR 

This example represents the typical costs of using PayPal Credit as a standard funding method. Interest on your instalment offer is fixed for it's duration. See terms for more details.
Representative Example
  • Purchase Rate 23.9% p.a. (variable)
  • Representative 23.9% APR (variable)
  • Assumed Credit Limit £1200