Log Home Assembly

Groundworks

These pictures are taken from a Tallviken 120 bungalow assembled in Rotherham in July of 2005. You will not find Tallviken 120 on the product pages because it is an example of a customised design. This building consists of two large classrooms at each end with male and female toilets in the central area opposite the entrance.

For this project trench foundations were chosen by the customer. Trench foundations are easy to make but do require preparation in advance of the arrival of the house.

First a digger is used to make a trench around the perimeter of the property 0.5m deep. The trench is filled with liquid concrete to make the footings which is then levelled and allowed to dry for a week.

Once the footings are dry a double thickness of five courses of bricks are laid with air bricks at intervals. In addition a number of brick plinths are constructed inside the building which will provide support for the trimmer joists. After a few days the foundations are ready for the house to be constructed on them.

Delivery

Here comes the lorry at the end of its long journey from Scandinavia. This lorry contains only the exterior walls, and floor. There is another lorry carrying the roof, windows, panelling and insulation arriving in a few days.

This lorry is carrying fourteen pallets. Twelve of them are five metres long. The total load is twenty four tons. With such a large load it is essential to take careful consideration of where and how the lorry is unloaded and the storage of the pallets while assembly takes place. At this site we are fortunate enough to have a large car park available for unloading. If your access is more restricted then we can arrange for the pallets to be unloaded somewhere else and brought singly on a smaller lorry.

 

Each pallet weighs up to four tons so a forklift truck is required which can lift four tons at heights in excess of three metres. Here we have arranged for a telescopic forklift to unload the lorry.

While the lorry is being unloaded a membrane is laid inside the foundations to suppress the growth of weeds, and a Damp Proof Membrane is laid over the bricks.

 

 

 

Laying the base

Vacuum impregnated planks are laid on the damp proof membrane. These planks are what the log walls will sit on.They are not fastened down yet. That comes later.

At the same time the trimmer joists which are constructed of a double layer of vacuum impregnated planking are laid into the recesses left in the inner skin of bricks of the foundations. The trimmer joists are carefully levelled.

The first two logs are laid in the corner and locked together. An offcut of log is used to avoid damaging the tongue of the log with the mallet.

 

Where the side of the house exceeds the maximum log length of five metres, logs are joined together with a dovetail join. Logs are laid all around the house until three courses of logs have been laid.

 

 

 

 

Windows and Doors

Door and window openings are provided pre sawn. All that is required is to saw off the last few centimetres to make the opening.

Once three courses are complete a piece of wood is laid inside the logs. This piece will hold the walls in position as the build continues. The diagonals of the house are compared to judge if it is square, and taps of the mallet will move it on the foundations to make it square.

Once the house is square on its foundations, brackets are used to hold the walls into position.

 

 

Building the walls

Finally the wood on the DPC can be screwed down to fix the house on its foundations. That is the end of the hard part, now it is just a matter of finding the correctly numbered logs and hammering them into position.

While the walls are going up, other members of our team are busy installing the floor joists. The floor joists are supplied pre assembled and merely have to be placed in position. The spacing between the joists is checked by using one of the MDF boards that will eventually support the under floor insulation, and the joists are screwed into position.

As the walls go up an aluminium extrusion is attached to the door and window openings. The window frames will later attach here.

 

Putting the roof on

The purlins slot into the gable walls. They will support the weight of the roof. A vapour membrane is fixed to the inner wall, and the timber studs are fixed on top. Insulation will go between the studs, and the inner wall cladding will be fixed to the studs.

Now the assembly of the roof continues. Tongue and groove sarking is laid. This will then be covered in a mineralised felt to make the house waterproof. Optionally roofing tiles may be laid over the top for decorative purposes.

 

 

 

From the inside

Here is what the completed classrooms look like inside. This client has chosen a particle board floor covered with lino. Normally the interior floors are pine floorboards.

 

                   
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