When designing and constructing effective and ecological log houses, designers usually leave the issue of…
Wooden roof trusses – wood is a renewable natural resource and is very light. In today’s construction market, frame houses are economical and environmentally friendly, while being lightweight and easy to assemble. Our roof trusses meet the applicable standards for the construction of serrated metal prefabricated elements.
For their production, we use only high-quality four-sided planed wood (C24), certified metal toothed overlays and extensive design experience. Good construction skills and experience combined with the right materials help us create healthy, economical and environmentally friendly wooden roof trusses.
Timber for roof trusses
Structural wood of roof trusses is technically dried natural wood with a moisture content of up to 18%. The product consists of longitudinal sections in order to obtain the longest structural element of the building. For gluing, we use polyurethane glue, leaving the connection invisible. Depending on the area of application, the wood is protected against external weathering by dipping or painting. In the case of roof truss structures, we are talking about natural wood, where boards are glued together in layers to obtain larger and longer building elements. Our products made of glued wood include elements made of high-quality spruce or pine.
Wooden roof trusses have truss and frame structures that we produce in our company. The selection of the project and the calculation of the cross-section of structural elements are made by our qualified specialists. The truss consists of upper and lower chords, brackets and diagonals. Our constructions are made of connections in nodes on metal toothed plates.
Durable roof trusses withstand loads and shocks
The load-bearing structure of a gable roof is mainly influenced by snow, dead weight and wind loads. In addition, the bottom chord of the polyline truss can carry loads from the attic and the ground floor below. In a three-member timber truss, the top chord is in compression and the bottom chord is in tension. At the junction of the upper and lower chords of the roof truss, the compressive force acting on the rafter legs (angle V) is balanced by the tensile force acting on the lower chord and the vertical compressive force acting on the load-bearing wall. Knowing the sum of the loads acting on the upper flange of the beam, it is possible to calculate the value of the compressive force acting on the rafter legs and the value of the tensile force acting on the lower flange.
Responsible for the production and assembly of roof trusses
As a manufacturer and supplier of wooden roof trusses, it is our duty to ensure their compliance with the declared technical parameters and the requirements of current documentation. We are also contractors on site, responsible for the correct installation of trusses and compliance with the assembly instructions.
Wooden roof trusses can be assembled in many ways. Small trusses for one-story houses can be assembled by hand by two people. Using a crane allows the same job to be done faster and easier and is mandatory when the trusses are large and the house is more than 2 storeys. All truss installation locations must be marked on the mauerlat (upper slats of the load-bearing wall) before installation. Scaffolding must also be built just below the top deck of load-bearing longitudinal walls outside or inside the house.
Wooden trusses are usually delivered in packages and fastened with steel straps. The packages should be lifted to the top of the supporting wall and mounted so that they can be placed individually in each direction. Ties must be securely fastened with ties such as gable panels. If the project requires the installation of gable panels, in this case we install the gable panels first, if not, we install smooth trusses and then the protective panels.
After installing the gable truss and checking its level, we ran the rope along the cornice overhang and installed the middle truss along the rope to ensure the desired width of the overhang. Before removing the metal packing tape, place the rails on the truss packing and drive a nail into the top flange of each truss. They were then attached using longitudinal mounting rails and we also marked where they would be mounted. The trusses can then be individually detached from the packaging and moved to the installation site. First, attach the trusses to the mounting rails, and then nail them to the upper battens of the load-bearing wall. After installing all the trusses, we installed one marked mounting rail on the bottom chord of the truss and another on the top chord.
Why is it worth choosing a wooden roof truss?
Depending on the design, wood savings can be up to 40% compared to traditional wooden roof structures. When designing the roof truss, the program takes into account all possible load scenarios: snow, wind, roof, insulation, interior design, etc., thus ensuring maximum structural strength. We offer quick assembly of roof structures, thanks to which roof structures are less dependent on weather conditions. Thanks to wooden roof trusses, we can create large spans without additional supports, beams or load-bearing internal walls. They can be used both for the construction of new buildings and for the renovation of existing roof structures.