How to roof roofing material

Quality roof will help for a long time to forget about the bad weather and cold in winter. In the modern construction market there are many roofing coverings in any price segment, and, even with a small budget, there is plenty to choose from.

Inexpensive, common, technologically available roll material is a ruberoid. The following article provides comprehensive recommendations on how to cover them with a roof.

Advantages and disadvantages

The roof, made of these large black rolls, has several positive qualities and disadvantages that affect the durability and appearance of the finished roof. The material is distinguished by its structure, since consists of thick cardboard, impregnated with oil bitumen and covered with a refractory layer to obtain high-quality protection.

The main positive qualities of roofing material are its high degree of waterproofing and a relatively low price, so that for a long time the surface is protected from penetration of moisture and other adverse environmental influences.

The main disadvantage of this material is its appearance, which leaves much to be desired. Weak strength and a high probability of ignition worsen the installation possibilities; for this reason, experts recommend using roofing felt as an additional layer of roofing pie in the form of waterproofing basements or the foundation of a building.

Special features

Note! Before the start of the work, all rolls should be unrolled for 24 - 48 hours.

If this is not done, during laying the bumps and folds will form on the coating, which greatly hinders and spoils the material. For installation, you should select a sunny day with no rain or snow, as the insulated base must be clean and dry.

Roofing material is applied on the roofing flooring in several layers with additionally created moisture protection and a drainage system. For gluing, mastic on a bitumen basis is bought or made by itself. But, if the type of coating with a self-adhesive surface is used, the presence of an additional adhesive is optional. Self-adhesive rolls or not, it turns out at the time of purchase.

Marking

For work, you should buy a roofing material of appropriate quality and method of application. Manufacturers of such roofing materials use special marking, which can be decoded as follows:

1. P - the symbol denoting the name.
2. P - for lining.
3. K - for the roof.
4. M - melzzernista base.
5. K - coarse-grained base
6. S - the base of the cheekbones.
7. P - dust base.
8. 0 - 9 grams / square meter - numbers indicating the density of the used cardboard.

For example, RCCH 358 g / m² - roofing ruberoid with a density of 358 g / m² with scaly base. Depending on the needs of the buyer and financial capabilities, you should choose the appropriate type of bitumen coating.

Mastic

In construction, two types of bitumen compositions are used:

• hot - application requires high temperatures;
• cold - applied without warming up.

To save money, the bituminous mixture can be made independently. Consider a method for making 5 kg of fresh mastic.

To do this, you need ingredients:

• crushed bitumen without quality impurities - 4.5 kg;
• plasticizer - oil - 0.25 kg;
• asbestos, peat, sawdust, mineral wool or rubber as fillers - 0.5 kg.

All ingredients are placed in a metal pot of 8 liters with thick walls, it will mix the mixture. If you use a smaller boiler, boiling bitumen will be splashed out, and up to half of the total volume will be lost.

Now you can begin the process of cooking.

The boiler is placed on a stable support above the fire and crushed bitumen is loaded into it. To obtain a homogeneous homogeneous mixture it is necessary to maintain a stable temperature, controlling the power of the fire. If this is not done, the re-boiled bitumen during cooking will undergo destruction and lose the basic properties of the waterproofing agent. Preparation should proceed very slowly for about 3 to 4 hours, and in the process you should add dried filler with a plasticizer in small doses, at the same time mix thoroughly, avoiding the appearance of solid large pieces. The whole mixture should boil with the sound of hissing and with the release of gray smoke - this is a sign of the right job. After cooking, the mastic is used hot for no more than 1 day.

Surface preparation

For better adhesion of the roof surface and fresh mastic, the place of installation should be carefully cleaned of debris and primed. In the presence of dents and cracks, they need to be repaired. To save money, the primer can also be made independently using 76-nd gasoline and finely ground bitumen. Is taken? gasoline and? liquid bitumen with a temperature of 700 degrees Celsius. Bitumen is added in small doses and is mixed in the process until it is completely dissolved. The mixture is filtered and used as a primer. Let's find out how many layers of roofing material must be applied to the surface of the roof.

Number of layers

Since the angle of inclination of the roof of each building is completely different, a system was adopted for placing roofing material in several layers depending on the angle of inclination:

• flat roof - 5;
• from 2 to 3 degrees - 4 with fine-grained dressing;
• from 3 to 10 degrees - 3 with coarse dressing;
• from 10 to 15 degrees - 2;
• 15 and above - 1, or you can replace the roofing material with another material.

It is necessary to measure the number and size of the strips, to prepare the surface as described above and to begin laying the coating.

Piling

For laying ruberoid apply several ways:

1. Mechanical styling - the strips are laid in a vertical line from top to bottom with an overlap of 150 mm to each other. After that, the slats are placed along the strips and fixed with nails or screws, mastic is not used. You will need galvanized screws or nails, a hammer or screwdriver, mounting rails.
2. Hot styling - first, ground the surface to be closed, apply hot mastic on the roofing material and the roof and glue the strips from the bottom upwards with overlapping sheets at each other 150 mm. To save the adhesive mass, only overlap sites are treated. You will need a roller for applying an adhesive layer and a heavy roller to press the coating to the treated surface.
3. With the use of gas roofing burner - a gas burner melts the inner adhesive base of the adhesive strip and immediately, using a heavy roller, press it to the surface.
4. For the second and third layers - a bitumen mixture is applied to the previous layer and glued to the next perpendicular to the previous one, and the edges are cut and nailed.

Thus, a single and multi-layered protective coating is created for the roof of a house or garage.

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