In the list of modern roofing materials, widely used both in the private sector and in industrial construction, ondulin (or Euro-asbestos) occupies a special place, characterized by such remarkable properties as:
Ondulin, which includes bitumen, cellulose fibers, rubber and minerals (as a filler), can be classified as unique materials, made in the form of standard sheets of wave-like shapes, reliably protecting roof structures from bad weather
Before you roof the roof with your Oudulin hands, it is not superfluous to be familiar with some of its distinctive features. Like any roofing material ondulin has its advantages and disadvantages. The indisputable advantages of such coatings include:
The disadvantages of ondulin coatings are considered to include:
As already noted earlier, one of the advantages of ondulin is the possibility of its quick installation in combination with the relative simplicity of all the operations performed at the same time. Given the fact that the ondulin is allowed to lay on the old roofing, the economic effect of its use can be quite large.
Installation of ondulin on the old roofing
In addition, during the installation work with this material is not there is a need to use any complex tool, as well as special training of the contractor. The owner of the structure being built is able to cope independently with the task set for him (even without outside help).
Since ondulin is soft, it is necessary to fasten the sheets of RSD that will not allow this roofing material to sag over the sheathing. Ondulin is relatively light and even with OSB sheets a new roof is much lighter than old tile and even slate.
In the case when the roof is built from scratch, you will have to prepare a reliable crate from the bars, which will serve as the basis for laying sheets of ondulin. In addition to its direct purpose (as a supporting base), this part of the roof structure can be used to place on it such important elements as heat and waterproofing.
The lathing for the ondulin sheets is done with a small step, sufficient so that the coating material does not sag under the weight of accumulated snow or the OSB sheets are packed over the old lathing. In addition, the parameters of the batten should be selected taking into account the angle of inclination of the slope, as well as the direction of the wind characteristic of your area.
Fastening of sheets of RSD
For a classical stingray, covered with Odulin, the basic parameters of the frame base look as follows :
To build a reliable ondulin roof that can last for many years, it is recommended that you familiarize yourself with a number of provisions regarding the installation of the specified material.
Such an installation manual contains the following recommendations:
The slope of the batten
In each specific situation the sheathing step is set depending on the slope of the slope being closed:
Diagram of the sheathing for ondulin depending on the slope
In the first of these cases, the value overlap height (end overlap) must be at least 300 mm; while the side overlap is done in two waves of the sheet. At high angles of inclination of the roof, these figures decrease to 200 mm and one wave, respectively. It should also be noted that a standard wood saw with lubricated technical oil can be used to adjust the sheet blanks.
This subsection describes how the ondulin sheet is properly attached to the crate.
The first row is mounted in one piece, starting from the edge of the roof. To fix them, special nails are used (they look like screws), which should be installed in each crest of the wave. When laying the subsequent rows, half sheets will be required (i.e., cut longitudinally into two parts), which are fastened through a single comb. It goes without saying that each of these sheets (as well as the rows) should be installed with a small overlap, the value of which is indicated above.
Sheets, fastened in a vertical position, are fixed on a crate prepared for them with a longitudinal overlap (overlap) in one wavelength; while the transverse overlap should be about 150 mm. At the final stage of roofing work, the installation of the ridge elements of the roof is made, which are fixed with an overlap along the wave of the sheet used.
Installation of the ridge element
Cost of a standard sheet ondulin in the size of 2000 * 950 mm in different regions ranges from 380 to 400 rubles.
The total need for roofing material, as well as the total cost of its purchase is determined by taking into account the number of sheets required to close all roof slopes, the area of which is calculated by known methods. When determining the total area, we should not forget about the amendment, which takes into account the part of the surface that is hidden under the overlaps (between adjacent sheets and rows).
In conclusion, we recommend that you familiarize yourself with the video, which tells about the installation of ondulin on the old roof, covered with roofing material (slate).