The device of the roof of a residential building or an industrial building can be made using various roofing materials: soft, metal, translucent, natural roofing, tiles, slate or roofing material. Today in our article we will talk about how roof mastic is used as an independent roofing, and how important it is to drain water from the roof to increase its service life and operation of the house.
Purpose of mastic
With the help of polymer or bitumen-polymer mastics, new seamless roofs of various shapes are installed, or the roof of the house is replaced, requiring partial or complete repairs.
Thanks to this coating on the roof you can create an elastic and durable roof.
Mastic is applied to the surface of a flat roof in liquid form, thus forming a waterproofing film without joints. The elasticity of the formed film provides on standard roof tightness in case of roof deformation.
Mastic can be applied to any surface:
- ruberoid;
- concrete;
- steel.
The use of polymer mastics is not limited to the slope of the roof. Up to the roofs with a configuration of spiers and domes.
Attention. There is one important point: the roof surface must be flat for even distribution of the mastic cover.
The composition of the mastic
After applying to the surface roofs, mastic tends to harden to the state of a monolithic coating.
There are several types of mastic:
- polymeric;
- bituminous;
- bitumen-polymer.
They include:
- fillers;
- solvent;
- various additives.
Modern roofing of this type can be given the desired color. For this, coloring components are added to the composition. The additive is produced both in the factory and by the consumer at the construction site. The higher the content of pigments in the anhydrous dye, the richer the color of the mastic will be.
The use of modern mastics does not require their preheating
So to speak, “cold” mastics are more often used:
- One-component. They are made on the basis of a solvent, are produced in sealed containers, ready for use.The curing process of this material occurs as the solvent volatilizes.
- Two-component. Available in the form of formulations that must be mixed before use.
Roof operation
Directly the quality of operation of the mastic roof depends on the correct preparation of the mastic at the construction site and its application to the roof surface. In this case, a one-component material is advantageous, since a ready-made composition is applied to the surface.
When using two-component materials, the work is carried out in two stages:
- Preparation of the mixture;
- Applying the prepared mixture to the surface.
This composition makes more precise requirements for the technology of roofing.
If you approach from the other side, then by mixing the compositions directly on the object, you can, in accordance with the conditions, change their properties:
- hardness;
- color;
- viscosity.
In general, to increase the operation of a mastic roof, it must be reinforced with fiberglass mesh or fiberglass. .
Mastic application technology
Mastic can be applied to the roof surface in two ways:
- mechanized - using air sprayers;
- manual - with a brush or roller.
Both methods provide reliable and easy roofing on roofs of any slope or shape.
Especially noticeable is the advantage of using mastic on the roof with various parts, nodes and junctions. In such places, when using rolled roofing materials, the complexity of the process increases due to the need to cut the cover. Mastic can improve the expressiveness of the roof.
Also, this material is indispensable for the repair of various types of roofs:
- concrete;
- metal;
- roll;
- mastic;
- asbestos-cement.
Many brands of mastics are applied to an old roof, a wet surface. At the same time, adhesion with roofing materials is maintained at a high level, which leads to an extension of the roofing season.
It is more expedient to equip the mastic coating on the combined forms of the roof, where the roofing coating is subject to separation due to the action of water vapor.
In this case, the mastic composition ensures the reliability of the roof, due to strong adhesion to the cement-sand screed, concrete panel roofing and due to vapor-permeable properties.
Drainage from mastic roofing
Prolonged exposure to precipitation on a mastic roof can cause damage to it. In addition, if water flows from the roof in a disorderly manner, it can have a destructive effect on the facade and foundation of the house.
You must take care of the roof, and even if you have a small piece of the roof, you need to know how to drain water so that there is no place for destructive phenomena.
As a rule, the drain is formed from gutters, pipes and various auxiliary elements. The number of components of the drainage system must be calculated before its installation.
Maybe you need these details:
- dead end gutters;
- tees;
- connecting knees;
- funnels.
Advice. When carrying out the flow of water, the gutters should be installed with a slope, thereby simplifying the movement of water.
The size of the gutter depends on the area of the slope. For a small roof area, it is enough to use a 125 mm gutter and connect it to one sewer pipe. For a roof with a large area, large elements of gutters will be required.
In addition to the dimensions of the elements, it is worth paying attention to their aesthetic appearance so that the gutter system matches the features of the house.
More popular drainage materials include:
- plastic;
- copper;
- zinc;
- aluminum;
- PVC;
- steel;
- titanium-zinc.
After draining the water from the roof, it is necessary to organize its removal from the walls and foundation of the house. This question is a little out of the scope of our article, so we will not delve into it.
As you can see, to equip a reliable roof in a house, you don’t need much magic. It is just necessary to have some knowledge of applying roofing mastics; know the physical and technical properties of mastic; be able to choose the best mastic from a large assortment; know how to arrange a drain from the roof.
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