HOW TO BLOCK THE ROOF: A REVIEW OF ALL MATERIALS

Roof constructions are divided into 3 types:

1. Flat
2. Pitched
3. Combined

The first type is built with a slope not exceeding 7 percent. Such roofs are multifunctional, but they are demanding on the drainage system and moisture permeability. Technology allows you to build a flat surface of transparent materials.

The pitched roofs include single and double-pitched structures: hip (4-pitched), semi-hinged, mansard (allow using the attic as a full room) and a lot of gables.

In addition to these structures, spherical and dome variants are common. Conjugation of several types of roofing is called a combined roof.

The material for the roof is chosen by type, taking into account the parameters:

• durability - the ability of a material to retain its properties with multiple changes in external conditions.
• price (amount of material and fasteners);
• cost of installation and auxiliary materials;
• load on the building, thermal conductivity;
• appearance;
• security.

For a flat roof Polymer mastic - a new life of outdated technology

The material replaced the bitumen (resin), which was preheated and applied to the roof surface. The disadvantage of the method was considered harmful to roofers and fragility. Modern "hot" mastic designed for waterproofing. Mastic, which, unlike bitumen, is sold in finished form, is applied to the roof with a simple roller. The surface is cleaned from dust before application. Use the material can not, if there are cracks.

Benefits:

• low cost;
• low labor intensity;
• operational repair.

Disadvantages:

• requires surface preparation;
• fragility;
• high heat loss.

Price per square meter with installation - 2 US dollars. Service life - 3 years.

Self-leveling roof

By the principle reminds bitumen mastic. The material is liquid, includes oligomers. The composition is applied in layers on the cleaned surface of concrete, metal or bitumen. When plasticizing forms a continuous waterproof film. Find more at the http://stonehome.lt/ru/home/

Benefits:

• exploited surface;
• durability;
• resistance to temperature extremes in a large range;
• quickly installed;
• seamless;
• fireproof;
• harmless.

Disadvantages:

• requires an ideal surface;
• with a slope above 2.5 ° reinforcement is necessary;
• price depends on the number of layers.

The minimum cost of bulk polymeric mastic is $ 5. The term of operation is 15 years.

Flat membrane coating

PVC, TPO and EPDM membranes are used for the roofing. Polyvinyl chloride material is not safe for humans, but resistant to ultraviolet and open fire. Rubber membranes (EPDM) are harmless and durable (reinforced with polyester mesh). TPO are identical in properties to EPDM, but included are reinforced olefins.

Membranes are installed by mounting around the perimeter of the roof. Apply on flat surfaces, for the roof of large buildings.

Benefits:

• water resistance
• large surface area without seams
• works are carried out at any time of the year
• low labor input during installation
• does not require repair
• not subject to mechanical stress
• durable

Disadvantages:

• foundation preparation required
• instability to solvents and oils based on organic elements

The warranty period of the membrane is 50 years. The cost per square meter without installation - $ 6. Installation is calculated depending on the complexity and roof area. Price from $ 3 per sq.m.

Roll-up material

The design has replaced the traditional ruberoid. The material in everyday life is called stekloizola, and sometimes waterproofing. Produced in rolls, which are based on fiberglass, fiberglass or polyester. The modified bitumen is sprinkled with mica, quartz sand or slate. Mounted on roofs with a slope of more than 10 °. It is mounted on a solid base on top of the insulation and waterproofing layer. Rolls roll over the surface, forming a continuous cover. Overlap material overlap. Joints are glued by heating the bitumen layer.

Benefits:

• durability
• does not require care;
• fire resistance, moisture resistance, sound insulation;
• safety for humans;
• easy;
• low cost;

Disadvantages:

• material before installation requires special storage (rolls are installed in a vertical position and do not allow interaction with heating devices);
• there is no possibility of mounting on flat roofs with a slope less than 10 °;
• additional materials are required for the substrate;
• the roof is not exploited;
• no resistance to high ambient temperatures.

The cost per square meter - $ 2. Installation - $ 2. Service life - 50 years.

Types of material for pitched roofs Decking

It is made from sheet iron by cold rolling. The product is coated with an aluminum-zinc or zinc layer. To increase durability, an additional layer of polymer protection is applied.

The installation does not require a solid base, which is made in the form of a batten from a shaped pipe or wooden slats. Installation is allowed on slopes greater than 10 °. Sheets are overlapped and fastened with screws with seals. With a slope of up to 20 °, the joint is filled with sealants.

Benefits:

• easy installation;
• high bending strength;
• durability;

Disadvantages:

• Sound insulation is required.

Sandwich panels

This is a multi-layered material. The design consists of 3 layers: 2 external - profiled sheet, internal - polymer insulation (foam). The layers are interconnected with glue or the cavity is filled with hot foamed polymer. The finished design form a solid monolithic material.

The sandwich has a low thermal conductivity and high strength characteristics, does not require the preparation of a special frame. The service life of the material reaches 30 years. The price of a square meter is $ 25 and varies depending on the thickness of the material. The cost of installation - $ 3.