Repair the roof or replace: when the issue of dismantling is relevant?

The roof of the house is one of the most susceptible to weathering parts of the structure of any structure. It is adversely affected by all types of precipitation, as well as wind, temperature drops and other factors. Accordingly, they tend to fail. Such a roof change.

Usually, the landlord starts asking this question immediately after the roof starts leaking for the first time. As a rule, at first they are limited to minor repairs, but the roof cannot be repaired endlessly and the situation worsens over time. Of course, the roof is cheaper to patch than to change to a new one. But on the other hand, this issue is controversial, because with the repeated repair of patches it becomes more and more, and the cracks are wider, then the roof begins to flow more and more often. As a result, the coating has to be changed.Dismantling of the roof is done independently or with the help of specialized companies.

Dismantling of the roof must be carried out for various reasons.

• Overhaul. It can be produced either for the whole building or only for the roof. In that case, when they do not plan to repair the room, which is under it, it is dismantled in parts, and then install a new roof.

• Complete or partial demolition of the building. Most often used for demolition of blasting or excavator. But from time to time there are situations when it is impossible to use these methods for one reason or another, then you have to dismantle the building "brick by brick" and dismantle the roof in several steps with removal of construction waste.

Tools that are useful to disassemble rafters, formwork and battens are as follows:

• chain portable power saw;
• ax;
• scrap;
• hammer;
• chisel;
• passatizhi.

It is necessary to adhere to such general tips on the technology of removing the old roof, such as:

• in order to disassemble the roof, it is better to start by removing the cover around the pipes and walls;
• if the metal tile is removed, then first remove the skates of the end and wind linings. Actually sheets of metal removed in the direction from top to bottom;
• dismantle drains, hem, lower valleys or whole valley;
• suspended rafters are removed in the following order: first remove parts made of metal, and then remove free-standing parts.

The following order of dismantling for a folded roof must be observed:

• panels of facing which are located vertically are separated and removed. They close chimney, ventilation pipes and other superstructures;
• freed around the perimeter of the area surrounding the dormer windows;
• row panels are removed (the order of removal is arbitrary);
• the groove is embroidered;
• overhangs and eaves elements are dismantled.

As a rule, disassembly is carried out, moving horizontally from one ramp to another. The gutter drain, curtain rail and lighting elements are dismantled from the inside, from the attic. If the roofing materials are in an acceptable condition and they are planned to be used in the future, then a turn-up hammer is used to release the seam joints.In the absence of plans for further use of the roofing material for cutting, a roofing chisel is used.

Analysis of roofs covered with roofing felt (the most common roll type of roofing for garage roofs) is a time consuming and rather expensive process. In summer, in direct sunlight at a temperature on the roof up to + 400ºС and above, layers of bitumen can bake with each other.

This coating is separated from the base always with great difficulty.

To do this, you can use several methods.

• Removal with axes and crowbars. A roofing ax is called a felling device, in other words, it is an ax on a long handle. The length of the handle is used to lengthen the "shoulder" and achieve greater impact power. Sharply honed ax is 3 cm better enters the layer of bituminous roofing. So cut square or rectangular pieces, which are subsequently cleaved with scrap. When chipping off an overly large piece, it is easy to break it with the butt of such a roof ax.

• Removing by mechanical chaser. Such devices were developed for use on a horizontal roof.The wall chaser moves on a wheel track along the roof surfaces and can cut through a layer of frozen bitumen or roofing material at a given depth. Only one person manages a wall chaser. According to the standard, it cuts parallel strips with their subsequent division into pieces for transportation. The technological limit for cutting along the depth of the directional layers is 30 mm. Strobe cutters are either electrically driven or driven by gasoline engines.

If we are talking about the roof is not a concrete garage, and residential, country or office building, the floors themselves dismantled in rare cases. Such a situation may arise if the roof is completely worn out, or if there is a need for capital repairs.In the presence of a layer of glass wool, special care must be taken when dismantling. The direction of work during the dismantling of floors is done from top to bottom. Simultaneous dismantling of overlaps on adjacent sections is prohibited. The dismantling of the supporting beams is carried out last, strict adherence to all safety rules is necessary.

The process of dismantling the steam and water insulation is carried out in the following way:

• when performing waterproofing using ruberoid, it is necessary to lift a layer of material on the edge with a trowel and remove it (tear off or cut off);
• if possible, the membrane or film is separated without damage, as they can be used again;
• layers of bitumen coatings are removed and disposed of;
• in parallel, dismantle the roof insulation;
• go to the dismantling of the supporting structure.

Due to the high costs of dismantling the pitched roof, many developers trust the implementation of such an important operation, which is necessary to match the quality of the roof overhaul, to specialized companies.

When the pitched roof is removed, the procedure is as follows:

• be sure to fix the attic floor with the help of temporary racks and girders;
• cables of all radio communication devices (television, radio) will have to be removed;
• if it is present, they also dismantle all plumbing equipment, remove electrical wiring cables, electrical equipment;
• disassembly of the chimney;

• remove advertising posters, their attachments;
• there is a process of removing the roofing material itself, and begin to take off from the side of the ridge;
• when the removal is completed, the removal of the thermal insulation layers is performed, the waterproofing is removed;
• if the need arises, then disassemble trusses.

If it is necessary to overhaul or completely replace roof structures, there are practically no restrictions on the choice of materials for a new type of coating. In the case of replacing the roofing with the use of the old truss system, experts have recommended the use of metal tile or corrugated flooring. Both that and other material will close all flaws of the previous roof (they exist at any old roof).Replacing the material of slate roofing on the other begins with the removal of slate and visual testing of rafters. When traces of the activity of putrefactive bacteria or damage to the structure are found, all damaged tree parts are eliminated and replaced with new ones.

After that hydrobarrier layers are spread, they are fixed to the entire area of ​​the truss structure with the help of construction staplers. After that mount the crate. The beam is set strictly at an angle of 90 degrees to the ridge; with its help, a finishing fastening of the layer of hydro-barrier layers is performed. After this, when installing the batten, bars are fastened to the bars, the same cross-section with the bars (most often 20x125 mm). The beginning of the installation of bars occurs from the edges, you need to check the accuracy of the installation process. This is done with the help of a lace fixed diagonally.

To replace a slate covering with a professional one, it is necessary to take into account that the professional sheet is produced in various formats. It is necessary to prepare material with a width of 98–180 cm and a length of 6–8 m. The beginning of the replacement of the roof covering is carried out in the same way as when replacing with metal roofing. First, remove the slate and inspect the truss system. If the rafters do not cause complaints, a layer of waterproofing coating is placed on the old rafter system, this is done with an overlap (mandatory condition). Waterproofing butt-and-dice of pieces should be glued together using self-adhesive tape.

Then heat-insulating layer is laid, mineral wool is usually used. Sheet corrugated sheets are mounted from the end of the roof with one or two waves (it depends on the type of roof). Where the imposition of sheet panels, you need a quality bond. With a slight angle of inclination of the roof, additional sealing is recommended. Attach the material to the batten only with the help of special screws, equipped with rubber gaskets.

The following expert advice should be followed:

• it is best to dismantle the roof brigade at least two people;
• it is necessary for the brigade to disassemble the rafter system, which includes 2–3 carpenters and a rigging specialist;
• in accordance with safety regulations, securing all workers with a safety belt is mandatory.

The main stages of dismantling the old roof and installing a new one, see the video below.