Decking on roofing material: is it possible to use this method when arranging a roof

As for the installation of the roof, one of the most pressing issues today is the question of whether it is possible to put corrugated board on roofing material. There is no consensus to this day, but much here will depend on the design of the roof, as well as the conditions under which it is planned to be used.

It is necessary to consider aspects of the problem in more detail in order to understand the situation.

What is corrugated board

Decking is a thin sheet of metal, painted and galvanized.

On such a sheet there are longitudinal recesses:

• in the form of a trapezoid;
• in the form of a wave;
• rectangular.

Such recesses are obtained by rolling a metal sheet. This material has a number of advantages, among which the main ones are excellent characteristics of durability and strength. Finished profiled sheets for roofing they have a large area, but despite this, they do not sag or bend, which ensures sufficient structural strength. In addition, no reinforcement of all frame elements is required.

Corrosion resistance is achieved through the use of galvanized steel, coupled with polymer or paint coatings in several layers.

The use of this material results in a beautiful appearance of the roof: the profiled flooring is very beautiful and aesthetic even in the eyes of a professional designer.

What is ruberoid

Ruberoid is a popular insulating material, which, due to its low cost, is quite successful in competition with modern innovations. The usual traditional roofing material consists of a simple roofing paper, which is used as a base.

To obtain the required material, it is impregnated with low-melting bitumen, and then covered with powder and refractory bitumen. Waste paper and wood pulp are used for the manufacture of roofing cardboard. But the traditional roofing material has a significant drawback - it is prone to decay.

But this problem also had a solution: modern roofing material is created on a non-rotting basis, which is called "euroroofing material". It is based on fiberglass, polyester and fiberglass.

The "framework" of the roofing material, in particular, is fiberglass, consisting of intertwined glass fibers. Fiberglass is somewhat less durable - the basis of polymer-bitumen roofing material, which differs from cardboard only in resistance to decay.

How practical will it be to lay the roofing material under the corrugated board? Since the roofing material is rolled roof waterproofing, which should not be ignored, the roofing material definitely deserves attention in this case. Laying roofing material is a simple operation, and the benefits of it many times exceed labor costs.

Is it possible to put a profiled sheet on roofing material?

As for whether it is worth removing the roofing material when installing roofing material, there are whole discussions. But this is completely optional - the main reason for removing the roofing material is the heating of the roof and the not very pleasant smell of the material heated to a certain temperature.

However, to eliminate this drawback is quite simple - you just need to provide a gap between the roofing material and the profiled sheet. This is done with the use of crates and counter-lattices.

To ensure good ventilation of the roofing material, it will be necessary to erect battens between it and the roof - this will eliminate problems with condensate, and in hot weather, the roofing material will be much less susceptible to heat, and the smell of bitumen will not rise. Another plus will be the prevention of roofing material rotting.

Advice!
Such a method will be effective only if the installation of the entire roof is of high quality - little depends on the materials here.

Is it worth it to remove the roofing material before installation

In no case should you tear off the roofing material from the surface - thanks to it, additional heat insulation is provided, especially in cases where the material is laid in several layers. It is also not recommended to remove roofing material and lay the roof on grooved boards - this will complicate ventilation.

It is also not worth fixing corrugated board with nails - you need to use only self-tapping screws, with a rubber gasket. If the profiled sheet is less than 35 mm in height, the self-tapping screw is screwed into the upper wave, less than 35 - into the lower wave.

Why is it considered that roofing material cannot be used for roofing

All construction companies offer a large number of roofing projects without the use of roofing material at all. Some of the experts to the question "is it possible to lay corrugated board on roofing material?" say "no" unequivocally. What is the reason for the disagreement?

The answer is pretty simple. The roofing material heated from summer heat under a metal roof releases ethereal volatile substances in excessive quantities. For the ecology of the attic, this is in no way beneficial.

There are other downsides:

• The roofing material has a slightly shorter life than the roof itself.
• Significant labor required
• The formation of condensate in the spring and autumn, and this is very harmful for the attic.

Advice!
If for some reason it is not planned to arrange a wooden counter-lattice between the metal and the roofing material, it is better to use a vapor and waterproofing film instead of the roofing material.

Increasing the durability of the roof when laying roofing material under the coating of corrugated board

After thinking about whether roofing felt is needed for corrugated board, it is necessary to determine how to increase the durability of the roof in this way.

To do this, you will need to perform the following steps:

• choose a good high-quality material (roofing material);
• when installing the roof, use only high-quality fasteners;
• prepare the surface for laying the material;
• lay the roofing material in compliance with the requirements for the performance of this work;
• regularly inspect the roof for the timely tracking and correction of minor defects.

The roof is the basis of the house, and its service life to a large extent depends on your decision - whether it is possible to lay corrugated board on roofing material.

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