Assembling the roof of the rafters - preparatory work in full swing
As with any construction work, the erection of the roof requires a number of preparatory measures, by which all differences in the size of the walls are eliminated. This will allow to assemble the roof base according to a uniform size and pattern.
In case the house box is built of blocks or bricks, then a thin layer of cement-sand mortar is used for its alignment. For buildings made of wood, different pads are used. Smooth walls of the house will relieve the builders of unnecessary trouble with the fitting of each rafter.
The technology of production and installation of rafters is quite simple. First, we will analyze what the rafters are, what materials are used for their manufacture, and also what role they play in the common roof skeleton.
Rafters are a load-bearing structure for a gable roof, which accounts for the lion's share of the load of all its external parts. For manufacturing use logs, beams or boards. If it is still difficult for you, ready-made rafters can be ordered at the nearest carpentry shop.
Installation instructions for rafters - materials and tools
The installation of the roof rafters is carried out from well-dried sawn timber. The structures, assembled from moist wood, after a while, as they dry up, begin to deform. Wet material can be dried for several months under a canopy. Most often for the construction of the roof use softwood.
Connect rafters with nails, bolts, screws, clamps and clamps. Put together, they have the shape of a triangle, which is the most rigid and reliable mounting structure.
Novice builders probably believe that for the erection of the roof, some complicated adaptations are needed. Everything is much simpler. For the manufacture and assembly of the system, a common carpenter's tool is used:
- ax;
- hammer;
- knife - for precise fitting of parts;
- hacksaw;
- plumb line;
- building level;
- measuring tape.
Further description of the work is a kind of instruction for the installation of rafters, which will allow even inexperienced masters to easily and easily understand all the subtleties of roof construction.
Mounting the rafters with your own hands - do not miss a single step of the
Before starting the installation, a Mauerlat is laid on the walls - a wooden longitudinal bar that supports the rafters. It can be continuous or it can consist of fragments that are placed under each leg.
In wooden houses, the role of the Mauerlata is performed by the log frame. In brick structures, the beam is flush with the inner surface of the walls. Between the mauerlate and the wall, a double layer of waterproofing from the roofing material is necessarily made. The assembly of rafters is much more convenient to carry out on the ground. It is important to remember that the angle of the leg should correspond to the slope of the roof slope. Upon completion of assembly, the structures are fed to the top of the building.
The installation of the "legs" begins with the outermost trusses. After that, a cord is stretched between them, along which all subsequent designs will be installed. The distance between the rafters should not exceed 1200 mm. It is recommended that all the main fastening units of the trusses be connected using steel staples.
The installed rafters are stitched together in the upper part, in pairs. Further on top of them is laid the ridge beam. Usually this is required when the longitudinal length of the roof is more than seven meters, and the system itself has considerable weight. If the length of the roof is smaller, then the upper part can be connected using stretch marks. In winter, during snowfalls, they will serve as an additional support for the roof.
Attention to the visitors of the site is offered visual material, how to install the rafters on the frame, video clips in more detail show the entire process of assembly and installation of the system. We hope that this will help you to understand all the nuances of construction work.