Larch prisms include lumber that has a cross section of up to 100mm (e.g. 100x100mm, 80x80mm, 80x100mm). It is usually off-centre, i.e. the centre of the log does not cross the length axis. The difference between a beam and a prism is its size and the position of the cut in relation to the centre of the machined tree trunk.
Larch prisms are widely used in all wooden constructions both indoors and outdoors for wooden roof trusses, ceiling larch prisms and view trusses, pergolas, gazebos, fences, floors, terraces, facades and many others. At the customer’s request, we can deliver larch beams planned, sanded, milled edges to the radius. Larch beams, but also smaller larch beams are widely used in the production of structural elements of various building structures.
Larch has a very nice and decorative appearance, but especially high durability when used outdoors. Larch lumber has the highest resistance to weathering of our coniferous woods. Larch lumber has a high durability even without surface treatment, due to its high content of resin and oily substances, which impregnate larch so well that it repels water. We also cut larch timbers to order in whole metres up to 12 metres in length.
LARCH WOOD FOR GARDEN
Larch prims are a cheaper option to oak and are just as incredibly durable and will obviously last for many years to come, and will become even more beautiful with age. We can make larch beams with four sharp edges or just the required sight edge or side. The other edges can be rounded with bark.
Choosing larch timber beams is a neat way of landscaping your garden.
Whatever you need, a border, a vegetable or flower raised bed, steps, seating or even a pond, then our larch beams are perfect for your project.
JE LIBO MODŘÍNOVÉ HRANOLY PRO STAVBU VYVÝŠENÝCH ZÁHONŮ ?
A raised planter bed is perfect for the eco-friendly gardener, ideal for vegetable beds if you are thinking about self-sufficiency, offering more space for growing flowers and fruit or even creating a beautiful ornamental feature.
They are the perfect way to introduce a different type of soil into your garden and can help improve drainage for plants. Their relatively small footprint also makes them easier to work with and maintain.
We offer a range of shapes and sizes to suit your needs and available space, with pre-cut wooden components that make construction quick and easy.
WHICH LARCH PRIMS CAN WE MAKE FOR YOU DEPENDING ON THE PURPOSE?
rustic look with a higher proportion of twists and curves
The look of the larch prisms in the rustic style highlights the natural beauty of larch wood without the perfect industrial edge treatment. Beams treated in this way will transport you back several centuries to a time when the emphasis was not on perfection. The more or less bark-free edges, small and large healthy knots remind you every time you look at this beautiful piece of wood that in the beginning it was a tree that grew for decades, with a natural curve rising behind the light with a lush branching in the crown. Logs with more branches (knots) cut off and not completely straight are used to make larch beams with a rustic look.
Rustic larch prisms are suitable for larger square and rectangular dimensions of 150mm and more, e.g. in the form of a solid bench, table, design element in the interior and exterior.
sharp-angled appearance with fewer twists
In the production of larch beams and prisms we emphasize the quality of processing, so that all edges are sharp without curves and a large number of large twists. The clean appearance and quality of the larch beams show the beauty of larch wood and are suitable for structural and design elements of various small and large building elements.
For the production of larch prisms, the logs are used in the order of the first and second pieces from the bottom of the tree with fewer cut branches (knots) and minimal curvature.
View larch prisms are suitable for use from smaller square and rectangular dimensions of 80mm and more e.g. massive chairs, tables, design element in the interior and exterior – gazebos, pergolas, view rafters and other massive structures
Freshly sawn (tarred) larch squares with unspecified moisture content
The disadvantage of using unprocessed lumber may be the high water content and the subsequent volume changes and deformation when drying to equilibrium moisture content. The higher water content can also be problematic in terms of increased risk of attack by wood-boring insects, moulds and fungi, but this is to a small extent in larch, as larch is resistant to these attacks, as is oak.
When buying raw lumber, it is a good idea to choose the right quality for the application. In general, centre sawn timber, ideally radial with no pith content, will be the strongest and most stable.
On the other hand, the incorporation of elements made of uncured wood containing pith can cause undesirable effects in the form of twisting, drying cracks, etc.
This product of basic sawmill processing does not lose its popularity in traditional carpentry constructions, where a relatively wide range of cross-section dimensions is applied – their use is in gazebos, pergolas, roof trusses, exterior constructions, larch beams in the garden.
We’ll be happy to advise you on the selection of suitable material…
Technically dried, planed larch prisms
The profiles are manufactured from technically dried larch lumber with guaranteed moisture content (usually 15% ± 3%). For larger dimensions above 120mm, they are produced as center lumber or for smaller dimensions, the primary cutting of the logs is done by cutting through the pith (center of the log). This guarantees higher dimensional stability.
Four-sided planing or sanding and chamfered edges are a matter of course – for ceiling beams and other visual elements we supply larch beams with planed, sanded, decoratively milled edges, grooves or hand planed.
We’ll be happy to advise you on the selection of suitable material…
TREAT THE LARCH TIMBERS OR LET THEM TURN GREY?
Larch does not need surface treatment in outdoor conditions, as it will last about 15 to 25 years without decay without direct contact with the ground. Untreated larch will turn grey in about 2-3 years due to sunlight and moisture. The colour changes first from the points that are most exposed to the weather and evens out over several years, depending on the conditions. The greying of wood can be slowed down by treating the wood with transparent wood preservatives. A beam made from larch also does not need to be surface treated, as the larch material can withstand UV and moisture stresses. Over the years, however, the wood will turn grey. Remember that during greying, the tone of the surface may be uneven.
