5m x 4m Severn® 400

Planing Rules

Photographs below may show optional extras, see specification

(4 reviews)
28mm Walls Log Cabin

  Todays Price:
£1786.38
(Exc. vat)
5
45mm Walls Log Cabin

  Todays Price:
£2126.81
(Exc. vat)
5
130mm TripleTherm<sup>®</sup> Walls Log Cabin

  Todays Price:
£3477.45
(Exc. vat)



  • FREE delivery within Mainland UK, some exceptions apply
  • Typically delivered in 2-4 weeks
  • This Cabin is ONLY available from Dunster House.
  • Beware cheap imitations

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Insulation pack - £996

Insulation pack
  • Double Glazing Pack
  • Roof Insulation
  • Floor Insulation
Luxury pack - £485

Luxury pack
  • Guttering
  • Double Door Shutters
  • Window Shutters x 2
call us today on 01234 272 445

Severn 400    Log Cabin plan layouts
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The Severn® 400 Log Cabin Kit is supplied with a French door and two opening windows for easy access when moving items in and out of the cabin, and to let in lots of natural light. Additional windows and doors are available to create a brighter log cabin with added ventilation. Add the optional 1.5m decking to create an ideal area for relaxing out in the sun or under the shade of the log cabin's canopy.

Take a look at the story of how our log cabins are manufactured.

Why our chalet style log cabins are the best!


This is why we beat all the rest:


DUNSTER HOUSE COMPETITOR A COMPETITOR B COMPETITOR C COMPETITOR D COMPETITOR E
Ridge Height 2400mm COMPLIES WITH PLANNING RULES 2800mm Planning restrictions!!! 2700mm Planning restrictions!!! 2540mm Planning restrictions!!! 2660mm Planning restrictions!!! 2600mm Planning restrictions!!!
Wall Thickness 45mm Tongue & Groove 44mm Tongue & Groove 44mm Tongue & Groove 28mm Tongue & Groove 34mm Tongue & Groove 35mm Tongue & Groove
Floor Bearers 70mm Pressure Treated Not stated Not Stated Not stated Not stated Not stated
Roof Beams Heavy Duty 140mm x 45mm 44mm Not stated Not stated Not stated Not stated
Canopy 1.1m 0.6m 1m 0.4m 0.45m 1.3mm
Door Walk Through Height 1750mm Not stated Not stated Not stated Not stated Not stated
Door Walk Through Width 1560mm Not stated Not stated Not stated Not stated Not stated
Door Height 1870mm 1860mm 1860mm 1740mm 1870mm 1770mm
Door Width 1780mm 1300mm 1295mm 850mm 1295mm 1295mm
Floor and Roof boards 19mm Tongue & Groove 18mm Tongue & Groove Not stated 16mm Tongue & Groove 19mm Tongue & Groove Not stated

Not only do we tell you all about the specification of your product, we also give you the dimensions!!!


Comparison based on our Avon 300 (45mm) and five competitors’ similarly sized chalet style log cabins.

Standard Severn® 400 Specification:

external size
EXTERNAL SIZE 5m (16'4") wide x 4m (13'1") deep (approx).
external size
INTERNAL SIZE for 28mm - 4.80m (15'9") wide x 3.80m (12'6") deep (approx).
external size
INTERNAL SIZE for 45mm - 4.77m (15'8") wide x 3.77m (12'4") deep (approx).
external size
INTERNAL SIZE for 130mm - 4.60m (15'1") wide x 3.60m (11'10") deep (approx).
walls
WALLS (28mm or 45mm or 130mm) Tongue & Groove walls.
floor
FLOOR 19mm Tongue & Groove floor boards for a sturdy floor.
roof
ROOF 19mm Tongue & Groove roof timbers to create a sturdy roof and attractive ceiling.

we don't use OSB sheet timber tongue and groove rooftongue and groove floor

 

Note: We only use tongue and groove timbers for our floor and roof not OSB sheet timber! (We only use MFP board on top of roof insulation, which will usually not be seen as it will have a roof covering over it).

internal eaves
INTERNAL EAVES 2040mm (6'8") (approx) High
canopy
CANOPY 1.1m (3'6") (approx.) deep canopy ideal for providing shade from the sun and shelter from the rain.
french door
PREMIUM FRENCH DOOR - Our French doors are wider than most competitors meaning you can walk through one door with ease. Made with rebated door panels (for a more attractive appearance) and fitted with a secure lock, and sculpted Georgian bars. The French Door has a low threshold for better accessibility and less tripping! French Door is provided in 6 assembled pieces that fit together then slot into place.

french door
PREMIUMPLUS FRENCH DOORS (Optional Extra) - Our French doors are wider than most competitors meaning you can walk through one door with ease. Made with rebated door panels (for a more attractive appearance) and fitted with a secure lock, and sculpted Georgian bars.Multi-Point locking system (on the master door), and is of the same type supplied with modern domestic doors. Concealed Shoot-Bolts (on the slave door), which means the doors cannot be opened, even from the inside, until they are unlocked. The door has a low threshold for better accessibility and less tripping.



walkthrough height
FRENCH DOOR WALK THROUGH HEIGHT 1750mm 5’9” (from floor)
walkthrough height
FRENCH DOOR OVERALL FRAME HEIGHT 1870mm 6’2” (from floor)
walkthrough width
FRENCH DOOR WALKTHROUGH WIDTH 1560mm 5’1”
walkthrough width
FRENCH DOOR OVERALL FRAME WIDTH 1780mm 5’10”
window
2 PREMIUM OPENING WINDOWS made with glass, not Perspex. We use glass as it is clearer and much easier to clean than clear plastic. They are also fitted with sculpted georgian bars.
window
2 PREMIUMPLUS OPENING WINDOWS (Optional Extra) - Units are fitted with 28mm Toughened Glass Double Glazing (4mm unit, 20mm space, 4mm unit), which is thicker than any other level of glazing available on the log cabin market and so more thermal efficient. PremiumPlus™ Windows are provided with a Multi-Point locking system, with mushroom headed espagnolette locks. (Please Note: Windows and Doors require on site glazing)

floor bearers
GASKETS - All windows and doors are fitted with Gaskets for improved weatherproofing.
double glazing
DOUBLE GLAZING Optional extra - * for improved Heat & Sound Insulation. ( see options below )
floor bearers
FLOOR BEARERS 70mm tall Pressure Treated floor bearers that sit underneath the log cabin to protect its foundations from damage by insects and fungal decay. Without pressure treated bearers moisture would damage the lower aspects of the cabin!
roof beams
ROOF BEAMS Heavy duty 140mm x 45mm to help prevent 'sagging'.
pre cut
All wood is planed, pre-cut (with the exception of trims), and pre-notched for quick and easy construction. Click here to see how easy it is!
windows assembly
After simple assembly windows slot into place. Minor adjustments will have to be carried out on windows well within the scope of a competent DIYer.
screw
We supply you with all nails and screws needed for the assembly of your log cabin. Click here to see how your Log Cabin Kit arrives.
testimonials approx sizes
CABIN SIZES - Please be aware that all Dimensions and Calculations are approximate figures.
compare caution


Base Recommendations:

For your Log Cabin, we recommend a RapidPad™ foundation System. This base system is designed for our products and can support the cabin on most types of ground. It also includes an insulated floor. Click here for full details


If you wish to use concrete, we recommend a solid concrete base of the cabin footprint size plus 100mm all the way round.

 

Optional extras:

 

UPGRADED WINDOWS & DOORS

Please Select from dropdown menu:
SALE!
Same great quality at an amazing new price!!!
more info...
£222.98
(Exc. vat)
Add to cart:

RAPIDPAD™ FOUNDATIONS WITH INSULATION

NEW PRODUCT!
Instead of laying a concrete base, why not go for our New Rapidpads™!
more info...
£1269.79
(Exc. vat)
Add to cart:

ROOFING MATERIALS

Please Select from dropdown menu:
 
Weather proof your roof with attractive ' red ' felt shingles.
more info...
£296.17
(Exc. vat)
Add to cart:

TREATMENT OPTIONS

Please Select from dropdown menu:
NEW PRODUCT!
Add some character to your Cabin with Light Oak treatment.
more info...
£76.60
(Exc. vat)
Add to cart:

CABIN DECKING

Please Select from dropdown menu:
SALE!
Create an area of relaxation outside your Log Cabin with Decking.
more info...
£208.51
(Exc. vat)
Add to cart:

SIDESTORES™

Please Select from dropdown menu:
 
Create additional outdoor storage by attaching the Sidestore™.
more info...
£477.45
(Exc. vat)
Add to cart:

UTILITY ROOM

Please Select from dropdown menu:
 
Create an internal room ideal for a shower/toilet or storage.
more info...
£382.13
(Exc. vat)
Add to cart:

ROOF AND/OR FLOOR INSULATION

Please Select from dropdown menu:
 
Our roof insulation is made with double skinned 50mm polyurethane with MFP...
more info...
£501.28
(Exc. vat)
Add to cart:

WALL MOUNTED SOLAR AIR HEATERS AND DEHUMIDIFIERS

Please Select from dropdown menu:
NEW PRODUCT!
Helps reduce humidity. Bulk discounts available
more info...
£508.94
(Exc. vat)
Add to cart:

SOLAR AIR HEATER (CABIN ROOF)

 
NEW PRODUCT!
Designed to heat the inside of your Log Cabin.
more info...
£508.94
(Exc. vat)
Add to cart:

DIVIDING WALLS

Please Select from dropdown menu:
 
Add extra rooms and storage space with a Dividing Wall.
more info...
£553.19
(Exc. vat)
Quantity:

CONSUMER UNIT

 
NEW PRODUCT!
Bring lights and electrics more easily into your garden building with the Consumer Unit.
more info...
£106.38
(Exc. vat)
Quantity:

WINDOW/DOOR SHUTTERS & FLYSCREEN

Please Select from dropdown menu:
 
Keep those bugs at bay with this great Flyscreen for your windows.
more info...
£46.81
(Exc. vat)
Quantity:

CLOCK OPTIONS

Please Select from dropdown menu:
NEW PRODUCT!
For the inside, or outside, the Clock is a great feature for decoration.
more info...
£28.09
(Exc. vat)
Quantity:

TOILET/SINK UNIT

Please Select from dropdown menu:
NEW PRODUCT!
This fantastic unit combines a sink and toilet in one easy to install wall section.
more info...
£805.96
(Exc. vat)
Quantity:

GUTTERING

 
 
Help drain away and store rain water with the addition of Guttering.
more info...
£132.77
(Exc. vat)
Add to cart:

ADDITIONAL WINDOWS AND DOORS

Please Select from dropdown menu:
 
Gain better access to your Log Cabin with an additional Single Solid Door.
more info...
£170.21
(Exc. vat)
Quantity:

UPGRADE TO OBSCURE GLASS

 
 
Give your Cabin added privacy while still allowing light in, with Obscure Glass.
more info...
£56.17
(Exc. vat)
Quantity:

SOLAR ACCESSORIES

Please Select from dropdown menu:
 
Add these LED lights for the edge of your decking.
more info...
£17.02
(Exc. vat)
Add to cart:

SOLAR LIGHTING SYSTEM

Please Select from dropdown menu:
 
Save money on your electric bills and reduce your carbon footprint with a Dunster House Solar...
more info...
£276.60
(Exc. vat)
Add to cart:

LOG BAR AND CABIN FURNITURE

Please Select from dropdown menu:
NEW PRODUCT!
A beautiful handcrafted log bar for use inside your home or in a log cabin. ...
more info...
£297.02
(Exc. vat)
Quantity:

FLOWER BOX

 
 
With the addition of Flower Boxes, you can bring more colour to your garden building.
more info...
£21.28
(Exc. vat)
Quantity:

SAUNAS

Please Select from dropdown menu:
 
The two walled sauna is designed to fit inside a Log...
more info...
£665.58
(Exc. vat)
Add to cart:

OPTIONAL EXTRA COMPONENTS

Please Select from dropdown menu:
 
Create additional outdoor storage by attaching the Sidestore™.
more info...
£49.36
(Exc. vat)
Quantity:

Delivery and Installation Option

Please select all optional extras you desire before entering postcode to get an accurate installation and delivery price.
delivery service
Delivery Option

Please note,
Our delivery are not Sub-Contractors - they are directly employed by Dunster House Ltd, to ensure the quality of their service.

£
Including Vat    

delivery within Mainland England and Wales.

installation service
Installation Option

Due to popular demand typically Installed in 6-8 weeks

Please note,
Our installers are not Sub-Contractors - they are directly employed by Dunster House Ltd, to ensure the quality of their installation.

Please click here to see what is included in installation service


£
£
Including Vat    

Phone us on 01234 272445 for installation and delivery information for this area.

FREE delivery within Mainland UK, some exceptions apply

Typically delivered in 2-4 weeks


£1786.38
(Exc. vat)


Product Review
(4 reviews)
 Latest reviews:
Chay Reid
I would like to start out by saying that ive had my severn 400 for over a year now,and ive had no trouble at all. the delivery was on time and the driver was helpfull,and all the pieces were there along with some key spares,i was impressed with the quality of the door and window assembly and the fact that apart from the trim they turned up pre made ready to slot into place.I got it up and felted in a day with a few friends and a lot of tea breaks.thanks guys great job,and would reccomend to others.
Wayne Thompson
I would just like to thank all the staff at Dunster House, Bedford, for such a great service you all provide. My dad passed away and left me some money, he loved to play pool at his home with us and his grandchildren. When he left me the money it only seemed right to purchase a log cabin and turn it into a pool room for my boys. I had travelled around 1000 miles over three weeks looking for a cabin and found the best service right on my doorstep. From the first phone call to a late night viewing which was about 20 minutes before you shut, but I was never rushed, I had time to look around, the lady answered all my questions, and the quality of your products stood out well above the rest. As someone who runs a transport department, your driver who delivered my product was a credit to your company, from his first call to his helpful advice and friendly manner. I say again, well done to you all and many thanks.
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