Add value to your property with Dunster House's revolutionary "Warmalog®" insulated cabin. This extended cabin can be used in many ways, from garden office to dog grooming haven and everything in-between. The benefits to you and future home-owners are numerous, including better heat retention and more space. It's a fully fledged garden building, complete with two separate rooms.
The comprehensive combination of insulation built into the wall logs, floor and roofing make sure that your new cabin will hold its heat for longer than a non-insulated version.
This high level of heat retention means that these insulated cabins are well-suited to any number of uses. It could be the perfect place to work from home, or to work out in a home gym. If you reguarly have guests over, having a building for your very own bar would be ideal. Maybe your children need a retreat where they can play to their heart's content - or maybe that's what you need instead. Whatever you need, the Severn insulated cabin will do the job perfectly.
You will need to prepare a solid base that is square and level to allow you to build this insulated log cabin successfully on your property. You can use concrete or our RapidGrid Foundation system. We recommend a base of 5.0m x 6.0m for this large Severn Warmalog®.
The minimum extras needed are a superior quality light coloured 'Barn' paint to seal the outside of the insulated log cabin, as well as a clear silicone sealer for the joints after decorating. These are available from your local decorator supplies. Once you have got those basics organised, the possibilities are endless! Coloured treatment? Dividing walls? Rugs, shelves and paintings? Once your log cabin is built, the only limit is your imagination!
Our thermally-insulated Warmalog® cabins are built of special triple Tongue and Groove logs with a 62mm timber and polyurethane ‘sandwich’. This type of log has better thermal insulation characteristics than competing brands, but at a very reasonable price.
As well as the walls of the Warmalog® Cabin, the 50mm floor and 60mm roof are insulated. The windows are Double-Glazed, with two panes of 4mm toughened glass and a 16mm air gap in a 24mm sealed window unit. These and more thermal design factors give Warmalog® cabins a U value of 0.59. This excellent heat retention makes the Warmalog® the perfect year-round log cabin.
The Warmalog® has an Espagnolette locking system on its wide-opening French Doors, so you can store equipment and furniture safely inside. The roof is held up and strengthened by large Purlin beams, and below your feet, pressure treated floor bearers keep the main cabin raised above the ground.
The Insulated Log Cabin is simple for home owners to assemble, thanks to the insulation being built into each individual log. This is much simpler than other log cabins sold with insulation in sheets.
Log Cabins will never be the same again!
We never compromise on quality which is why the insulation that we use in our Warmalog cabins is of the highest specification. It’s called polyurethane and it is one of the best insulators available, it’s so effective that even NASA has used it to insulate the external fuel tanks of their space shuttles!
Polyurethane is a great material because not only is it lightweight and versatile, its high thermal conductivity makes it sought after. Competitors insulation might be cheaper, but they may use Rockwool or polystyrene, which are inferior materials. Polyurethane is said to be 50% more efficient than Polystyrene and up to 100% more efficient that Rockwool.
It’s not just the walls that are insulated in a Warmalog cabin! We also provide the same kind of insulation for the roof (60mm thick) and for the floor (50mm thick). As well as this coverage, the Warmalog cabin comes with 24mm thick double glazing as standard.
All of this heat-retaining technology ensures that any Warmalog cabin can achieve a U-value of 0.59. The U-value assesses the rate of heat loss / gain through all the thicknesses of the combined elements that make up a building component such as a wall, floor or roof. Simply put the higher the U-Value the worse the product performs. Our Warmalogs U-Value of 0.59 is considered to be very low, meaning you’ll save a fortune on heating bills compared to Polystyrene or Rockwool insulated cabins!
AVOID PLANNING PERMISSION
Our extended Severn Warmalog is less than 2.5m high
and therefore exempt from UK planning conditions and permitted development
, even if it is close to the boundary of the property. This frees you from legal restrictions and allows you more freedom to choose your ideal site. You can now consider more personal factors such as the amount of direct sunlight it’ll receive, how easy it is to access and its aesthetic appeal. If you want to find out more about permitted development rights see our planning guide
The 4mm toughened glass that’s used to make up the double glazing in our windows and doors of our Warmalog cabins for increased security and resilience. It's much better than the 3mm ‘Shed-Spec’ horticultural glass which is commonly found in our competitors garden buildings. It is much more difficult to scratch or bend than the plastic alternatives, such as Styrene, Acrylic and Perspex, so it'll preserve the clear view of your garden.
The tempering process makes our toughened glass far stronger than the alternatives, and harder to break than normal glass. In addition, if it does happen to break, it will shatter into many small pieces, rather than scattering dangerous, razor-sharp shards. So confident on the superior quality we tested it against the other types of glass commonly found on the market and, of course, it came out on top!
24mm double glazing
This Warmalog cabin comes complete with 24mm sealed window units for increased insulation and noise-reduction. This is a single, ready-to-install unit comprising of two sheets of 4mm toughened glass with a 16mm aluminium spacer, which allows for optimum convection current between the glass, ensuring condensation-free windows.
They are made in our own factory and fully conform to European Standard EN1279, unlike most of our competitors.
Slow Grown Spruce, Not Cheap Pine
Unlike our competitors, we only use high-quality spruce timber in our garden log cabins rather than cheap pine or mixed timber. Why do we use slow grown spruce rather than the much cheaper knotty pine alternatives?
Spruce is considered more stable as it expands and contracts less than pine. This stability means that the spruce walls of our garden buildings minimise gaps appearing as the timber changes along with the weather. We responsibly source all our timber, where it grows slowly in the cold northern regions. We all know the old adage of counting the rings to see how old a tree is, well our timber grows slower, and takes longer to get to size meaning it has more rings in it. This means it has a tighter grain, and each ring helps prevent cracks and shakes appearing in the densely packed timber.
Our garden buildings really are built to last therefore we use only the highest quality, slow-grown spruce. Spruce is much more resilient to warps and splits compared to its cheaper alternative pine. Being a whitewood, it doesn’t discolour anywhere near as much as pine so it is also much more aesthetically pleasing for a log cabin. Considered more stable, less knotty and resinous than pine, spruce will also produce a lot less sap. It is also less dense meaning it is not as susceptible to mould and rot.
Many manufacturers use a mix of timber saving them money. They will buy the lowest cost timber and then mix these up during production, often using finger joints. Ending up with a cabin, where the walls are a mix of pine (redwood) and spruce (whitewood). Not only does the log cabin then look comical, with stripy walls of different timbers, but this just shows a lack of pride about the finished product.
PRESSURE TREATED BEARERS
All of our garden buildings have pressure treated bearers as standard. As they are exposed to the damp, cold ground. This treatment will prevent them from rot, decay and insect infestation for up to 10 years. Due to this costly but effective process, we can offer our customers a genuine 10-year guarantee against rot and insect infestation on the bearers. We only suggest that you apply a good quality water repellent to prolong the longevity of the timber.
Industry Leading Walkthrough Height
We were the first on the market to provide tall walkthrough height to the UK. There's no need to 'duck' on the way in through our quality French doors. With a tall walkthrough height of 6'2" (1.88m) you’re free to move in and out of your cabin concussion free. Others have tried to copy us but decided to include the doorframe as part of the walkthrough height.
AVOID SAGGING ROOF
The extended Severn Warmalog features heavy duty 140mm or 210mm by 45 mm wide supporting roof beams prevent dangerous and unsightly sagging. Just like every other part of your cabin, this important part of the structure will never be glued or screwed together offcuts. We only use single pieces of timber for our purlins to provide you with a strong and stable roof.
4-point locking system
Windows and doors are at the heart of your Wamalog’s security, and we design ours to ensure that only welcome visitors can enter your building. We feature as standard, a secure four-point locking system, including: hook, locking latch and two roller cams. We combine this with a 6 pin Euro cylinder, the same type of lock cylinder you would find on the front door of a typical house. Why should your log cabin be any less secure than your home?
Adjustable hinges and friction stays
Our expertly joined windows come with stainless steel friction stays, typically found on the uPVC windows in your home. This eliminates the needs for the typically found stay arm openers, commonly used on log cabins.
We’ve all, at some point in our lives, left the window open and it suddenly starts to rain. Usually, this would be an issue for normal window hinges. However, there’s no need to panic about rusty hinges with our domestic stainless-steel hinges.
We also include heavy duty easy-adjust hinges for our doors which allow you to make minor changes if ever required.
To control natural expansion and contraction in the timber, the Warmalog features steel straps on the inside and outside of the cabin known as storm braces, Secured by screws and bolts, these braces are adjusted to spread the timber's natural movement equally across a much larger area, thus avoiding the worst effects of localised expansion and contraction within the wood.
The Warmalog Grande provides you with two rooms, separated by a single solid timber door. You must cut the opening for this door yourself, as the wall is not sent to you precut. This multi-room feature gives you many more options for how you can use the log cabin. The 62mm thick insulated walls and solid door means there is some privacy between the two rooms if you want to play loud games or make a telephone call.
What is a Warmalog Insulated Log Cabin?
A: A Warmalog® Insulated Log Cabin is a garden building unique to the Log Cabin industry and exclusive to Dunster House. This unique Log Cabin features a 62mm sandwich of slow-grown Spruce timber and Polyurethane insulation, which come together to create a revolutionary type of wall log. and roof and floor insulation, this creates a thermally efficient garden building perfect for using all year round. Warmalog® Cabins are insulated in all directions. The floor has a 50mm thick insulated structure, the roof is 60mm (also insulated), coupled with 24mm double glazed sealed units made from 4mm toughened glass. Thanks to these and other heat-conscious design details, these Warmalog® cabins have an equivalent U value to 110mm logs and achieve a U value of 0.59. This means that you can feel confident your cabin will remain cool in the warm months and warm in the cool months.
What size cabin can I have?
A: We offer a range of Warmalog cabins. The smallest is 2.8 metres wide by 3.0m deep, and the largest is 4.8m wide by 5.8m deep.
How big is this Insulated Log Cabin?
A: This Insulated Log Cabin’s measurements are: 4.80m (15' 8") x 5.80m (19' 0")
How high is this Insulated Log Cabin?
A: It is 2.49m (8' 2") high
How much is this Insulated Log Cabin?
A: This product starts from £8,779.99
What base do I need for this Insulated Log Cabin?
A: We recommend a flat, level base at least 100mm bigger on each side. e.g. A 4m by 3m building would have a base of 4.2m by 3.2m See more details
here. The base can be concrete or made from our RapidGrid
Can I paint the Log Cabin?
A: Yes we recommend a superior quality light coloured 'Barn' paint for the exterior, as well as a clear silicone sealer for the joints. These are available from your local decorator supplies.
Where can I visit you? Do you have a store near me?
A: We have 6 branches across the UK. Click here
to find the nearest one! Please check with us before you visit if you are travelling to see a particular product.
Do I need planning permission for this Insulated Log Cabin?
How thick are the walls?
A: The walls of this Warmalog Insulated Log Cabin are 62mm Thick.
A: U-values tell us about the heat loss properties of the material you are measuring. The lower the number, the better insulated the Log Cabin will be. Find out more here
We deliver our products to mainland United Kingdom (England, Wales and Scotland). Some exceptions apply; these are illustrated on the map below.
Scottish areas may be subjected to slightly longer delivery turnarounds, please contact us for details.
FREE delivery on selected products over £200 to mainland England and Wales.
Delivery to postcode areas PL, TQ, TR, EX may take 1 week longer, beyond the delivery shown on the product page.
Green - £19.99 delivery fee on all orders under £200.
Blue - Delivery to postcode areas PL, TQ, TR, EX6, EX7, EX20, EX21, EX22, EX23, EX39 may take 1 week longer, beyond the delivery shown on the product page.
Yellow - £59.99 delivery fee.
Orange - £84.99 delivery fee.
Red - We are unable to deliver to these areas.
If you cannot provide an able bodied person to offload the vehicle with the help of our driver, we can provide additional manpower with our Assisted Delivery Service. The driver will arrive with some help to unload the lorry, meaning that you can put your feet up.
We offer this service on all items that are delivered, we do not offer this on our couriered products. Prices for this service can be found on individual products.
Should you require further information on our standard or assisted delivery services, please contact a member of our Sales Team.
Scottish areas may be subjected to slightly longer delivery turnarounds, please contact us for details.
Warmalog temperature test - 19/04/2017
Temperature outside the Warmalog Cabin: 11°c
Temperature inside the Warmalog Cabin: 12°c
Temperature after using a 2KW heater:
After 30 minutes: 22° c
After 60 minutes: 30° c
Wall, roof and floor temperature:
The top of the rear wall: 35°c
The bottom of the rear wall: 30°c
The top of the window wall: 32°c
The bottom of the window wall: 30°c
The top of the door wall: 34°c
The bottom of the door wall: 29°c
The top of the full wall: 35°c
The bottom of the full wall: 32°c
The temperature of the roof averaged between 34°c and 35°c
The temperature of the floor averaged between 28°c and 29°c