Monday, August 26, 2019

How to build a residential log cabin in the UK from delivery to fit out - accordingly to caravan act and or building regulations

This is one of our projects and how we have tackled it.

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First, start with a level concrete pad.
Reinforced and already with water, wastewater and electricity supplies as well as ring earth.
The pad needs to be elevated about 300mm from the ground. The concrete pads need to be level +/-5mm at a maximum.

Next, get a telehandler 4to to support the build. They are good for unloading trucks and for supporting the site. 

Next start to build the floor raft. There are other construction methods but this project has had a deeply impregnated floor raft with subfloor and ventilation under it.

Level the raft and fix it to the foundation pad.
Fit also a metal net to avoid animal traffic under the house.
The floor raft is made out of 2 parts to please the caravan act.
Floor layers are 44/198 mm at a distance of 600 mm c/c or 400 mm c/c. This floor raft is deep impregnated. Even such material will need to have a Uv and weather protection treatment after the building is build up.

The telescope handler is a 4 to one and the right tool to use for projects as it saves time and men power.

Start to build logs accordingly to plan.
Log rows are screwed together or wooden "nails" are used.  
A joint between the two parts of the building is relevant if the houses are according to the caravan act. 

 Purlins from laminated wood are fitted. We have attached the roof rafter angle brackets before we have lifted the beams.

Roof rafters are lined up and fitted. 

We used here roof rafter angle brackets and ring nails. Inside you can see uprights with sliding brackets.

Next breathable membrane and ventilation lath and OSB boards

On top of OSB board bitumen felt and bitumen shingles are fitted. 

Drip trim from metal

 Ventilated ridge element

ridge ready

At this stage, the house can be impregnated the first time out of three times. We often use Remmer Chemie HK Lasur. 

Next a breathable membrane to the inside of the outside walls and uprights fitted with sliding brackets.
Insulation in the fields and electric cable fitted.
Vapor control layer and inside boards.
Also, there are different possibilities we could have used a cross-layer to avoid hurting the inner membrane and such but here we finished just with inside boards or plasterboards in defined areas.

Next to adding furniture and bathrooms and moving in.

Doors and windows 
For this project, we used IV68 windows with 24 mm glazing ug=1,1 W/m2K. 
You can have those windows in any RAL tone or lasur finished as per the chart below.

The colour chosen by the client for this project is"silver-grey D7001"

The terrace will have its own floor raft 

we did for the MC project a covered entrance as the region is well known for a bit of rain. This extended roof overhang is providing extra protection of the facade.

From the design of the log cabins to completion of the first fix of the log cabins. 

Wednesday, June 12, 2019

Sauna "red skin" log cabin 70 mm logs prefab flat packed self build direct from factory

This 70mm log cabin has 3 rooms. One sauna room, a changing room, and a shower corner.
We have 2 roof versions. The first one is a roof rafter roof with lath for tiles and big roof overhangs.
The other option is a roof with 3 purlins and roof boards and a bitumen shingle roof. 
The windows are double or alternatively also triple glazed.
We offer the house with a wooden floor or without so the client can put floor tiles.
The preferred foundation for such a log cabin sauna is a concrete pad foundation.
The log cabin sauna will come flat packed

Thursday, January 17, 2019

public building to building regulations and RT2012 eco school building prefabricated log cabin

The total size of the building is 12 m x37 m 
12 m x 22 m is the school block and 
12 m x 15 m is the Aula room for sport and meetings
The house is energy efficient and heated by infrared heaters ( client´s choice).

First day the first rooms are taking shape. The scaffolding the client fitted in advance.

laminated 140x800 mm ridge purlin with roof rafter angle brackets 

Design stages of this prefabricated log cabin

It takes a bit as the club is finishing but they will get there!

Ventilated facade with pre-stained boards
Hinterlüftete hybrid Blockhauswand

Client fitted roof insulation and membrane upstairs, supervised self build! Still a challenge and a bit of work ahead. The boards have been prestained and will need another layer of stain.
The roof has 300 mm of  Rockwool, the membrane is the client´s choice. The u value of the roof is about 0,11 W/m2K and can be with another type of insulation also 0,09 W/m2K.
Zwischensparrendämmung mit  Kreuzlattung, hier bauen das die Kunden unter fachkundiger Anleitung ein.

Log cabin detail - adjustable post foot, in this case, a purlin support
Verstellbarer Stützenfuss im Blockhaus!

 Room in use. Whilst other rooms of this residential log cabin are still under construction, some rooms are already in use and students can learn how to play instruments.