Appendix A (mandatory). List of normative documents (not applicable) Appendix B (reference). Terms and definitions (not applicable) Appendix B (recommended). Calculation of the drying capacity of the system of ventilated ducts and aeration pipes in the combined covering (roof) of buildings (not applicable) Appendix D (recommended). Coverings (roofs) with roll and mastic roofs (not applicable) Appendix D (recommended). Constructions of roofing carpet made of roll and mastic materials (not applicable) Appendix E (recommended). Calculation of the roofing carpet for wind loads (not applicable) Appendix G (recommended). Examples of solutions for roofing parts made of roll and mastic materials (not applicable) Appendix 3 (recommended). Coverings (roofs) with roofing made of piece materials and corrugated sheets (not applicable) Appendix I (recommended). Examples of solutions for roofing details made of cement-sand tiles (not applicable) Appendix K (recommended). An example of calculating the pitch of the battens and the length of a roof made of cement-sand and ceramic tiles (not applicable) Appendix L (recommended). Examples of solutions for roofing details made of bituminous shingles (not applicable) Appendix M (recommended). Examples of solutions for roof tiles made of tiles (not applicable) Appendix H (recommended). Examples of solutions for corrugated roofing parts (not applicable) Appendix P (recommended). Examples of solutions for roofing parts made of metal tiles (not applicable) Appendix R (recommended). Coverings (roofs) with sheet metal roofing (not applicable) Appendix C (recommended). Examples of solutions for roofing parts made of metal sheets (not applicable) Appendix T (recommended). Examples of solutions for roof details made of reinforced concrete tray panels (not applicable)

Information about changes:

1 Roll and mastic

1.1 Unused

1.1.1 From bitumen and bitumen-polymer roll materials with fine-grained dressing:

with a top layer of coarse-grained roll materials or metal foil

1.1.2 From mastics:

with a protective layer of gravel or coarse dust

with a protective paint layer

1.1.3 From polymer roll materials.

1.2 Operated with a protective layer of concrete or reinforced slabs, cement-sand mortar, sandy asphalt concrete or with a soil layer (with a greening system)

1.3 Inversion

2 From piece materials and corrugated sheets

2.1 From piece materials

2.1.1 From shingles:

cement-sand, ceramic, polymer-cement

bituminous

2.1.2 From tiles

chrysotile cement, shale, composite, cement fiber

2.2 From corrugated, including profiled sheets

chrysotile cement, metal profiled (including from metal tiles), bituminous

cement-fiber

3 Of metal sheets

galvanized steel, polymer coated, stainless steel, copper, zinc-titanium, aluminum

4 From reinforced concrete panels of trough section with a waterproofing mastic layer

* One dimension (%) of the roof slope is transferred to another (deg.) By the formula:, where is the angle of the roof slope; x - dimension in%;

** For roofs made of bituminous and bitumen-polymer roll materials, it is necessary to provide measures against slipping along the base. It is possible to perform a roof with slopes greater than 25%, provided that the requirements of Table 3 are met.

4.5 The height of the ventilated ducts and the dimensions of the inlet and outlet ventilation openings of the duct depend on the slope, the area of ​​the roof and the moisture content of the inner layers of the roof (Table 2).

table 2

4.6 In roofs made of metal sheets (except for aluminum), laid on a continuous deck, a volumetric diffusion membrane (ODM) should be provided between the sheets and the deck for condensate drainage.

4.8 The height of the roof fences is provided in accordance with the requirements of GOST 25772, SP 54.13330, SP 56.13330 and SNiP 31-06. When designing roofs, it is also necessary to provide for other special safety elements, which include hooks for hanging stairs, elements for attaching safety cables, steps, steps, stationary ladders and walking ladders, evacuation platforms, etc., as well as lightning protection elements for buildings.

4.10 When designing operated roofs, the coating should be checked by calculating for the effect of additional loads from equipment, transport, people, etc. in accordance with SP 20.13330.

4.11 In roofs with a load-bearing metal profiled decking and a heat-insulating layer made of materials of flammability groups G2 - G4, it should be provided that the voids of the corrugations of the floorings are filled to a length of 250 mm with materials of the flammability group NG in the places where the decks are adjacent to the walls, expansion joints, the walls of the lanterns, as well as with each sides of the ridge and valley of the roof. In the event that two or more layers of insulation with different flammability indicators are used for roof insulation, the need to fill the corrugations of the floorings is determined by the flammability group of the lower layer of the heat-insulating material.

Filling the cavities of the corrugations with bulk insulation is not allowed.

4.12 The transfer of dynamic loads to the roof from devices and equipment installed on the roof (roof) is not allowed.

4.13 When reconstructing a combined covering (roof), if it is impossible to preserve the existing thermal insulation in terms of strength and humidity, it must be replaced; in case of exceeding the permissible moisture content of the thermal insulation, but of satisfactory strength, measures are taken to ensure its natural drying during the operation of the roof. To do this, in the thickness of the insulation and / or screed or in additional thermal insulation (determined according to SP 50.13330) in two mutually perpendicular directions, channels should be provided that communicate with the outside air through ventilation holes in the cornices, air vents at parapets, end walls, towering over the roof of parts of buildings, as well as through the aeration pipes installed above the intersection of the channels. The number of nozzles and the drying time should be determined by calculation (Appendix B).

4.15 In the working drawings of the covering (roof) of buildings, it is necessary to indicate:

roof structure, name and grades of materials and products with references to documents in the field of standardization;

the size of the slopes, the place of installation of the drainage funnels and the location of expansion joints;

details of roofs in places where drain funnels, drainage gutters and abutments to walls, parapets, ventilation and elevator shafts, cornices, pipes, roof windows and other structural elements are installed.

The working drawings of the construction part of the project should indicate the need to develop measures for fire protection, control over the implementation of fire safety rules and safety rules during construction and installation work.

5 Roll and mastic roofs

5.1 Rolled roofs are made of bituminous and bitumen-polymer materials with cardboard, fiberglass and combined bases and a base made of polymer fibers, from elastomeric materials, TPO membranes, PVC membranes and similar rolled roofing materials that meet the requirements of GOST 30547, and mastic roofs - from bitumen, bitumen-polymer, bitumen-rubber, bitumen-emulsion or polymer mastics that meet the requirements of GOST 30693, with reinforcing fiberglass materials or gaskets made of polymer fibers.

5.2 Roofs made of roll and mastic materials can be made in the traditional (when the waterproofing carpet is located above the thermal insulation) and inversion (when the waterproofing carpet is located under the thermal insulation) versions (Appendix D).

5.3 The structural solution of a roofing with a roof in an inverted version includes: reinforced concrete prefabricated or monolithic slabs, a cement-sand mortar screed or a slope-forming layer, for example, made of lightweight concrete, a primer, a waterproofing carpet, a single-layer thermal insulation, a protective (filter) layer, a gravel load or concrete tiles.

In an inverted roof, only slabs with low water absorption (no more than 0.7% by volume in 28 days) should be used as thermal insulation, for example, extruded polystyrene foam.

5.4 In exploited and inverted roofs with a soil layer and a landscaping system, the waterproofing carpet should be made of materials resistant to rotting and damage by plant roots. In a roof made of materials that are not resistant to germination by plant roots, an anti-root layer is provided.

5.5 The number of layers of waterproofing carpet depends on the slope of the roof, the flexibility and heat resistance of the material used and should be taken taking into account the recommendations set out in tables D.1 - D.3 of Appendix D.

5.6 The basis for the waterproofing carpet can be flat surfaces:

reinforced concrete bearing slabs, the seams between which are sealed with cement-sand mortar of grade not lower than 100 or concrete of class not lower than B 7.5;

thermal insulation boards, which must be resistant to organic solvents (gasoline, ethylacetone, nefras, etc.) of cold mastics and resistance to temperatures of hot mastics; thermal insulation boards made of expanded polystyrene and other combustible heaters can be used if conditions 5.11 are met. Thermal insulation boards made of foam glass, expanded polystyrene and mineral wool boards can have a factory-made inclined surface that provides a slope for the waterproofing carpet;

monolithic thermal insulation made of lightweight concrete, as well as materials based on cement or bitumen binder with effective fillers - perlite, vermiculite, foam granules, etc .;

leveling monolithic screeds made of cement-sand mortar and asphalt concrete, as well as prefabricated (dry) screeds from two chrysotile-cement flat pressed sheets 10 mm thick according to GOST 18124 or from two cement-bonded particle boards 12 mm thick according to GOST 26816, fastened with screws in such a way that the joints of the slabs in different layers did not match.

5.7 The possibility of using insulation as a base under a waterproofing carpet (without a leveling screed over it) should be established by calculating the loads acting on the roof, taking into account the elastic characteristics of the thermal insulation (tensile strength, relative elongation, modulus of elasticity).

The thickness and reinforcement of a cement-sand screed used as a platform for equipment, a parking lot, etc. and laid on lightweight thermal insulation boards (mineral wool, expanded polystyrene, fiberglass) are also set by calculation taking into account the elastic characteristics of thermal insulation boards.

5.8 Between the cement-sand screed and the porous (fibrous) thermal insulation, a separating layer of rolled material must be provided to prevent the insulation from wetting during the screed installation or damage to the surface of the fragile insulation (for example, from foam glass).

5.9 In leveling screeds, temperature and shrinkage joints with a width of up to 10 mm must be provided, dividing a cement-sand mortar screed into areas not exceeding 6x6 m, and from sandy asphalt concrete - into areas not exceeding 4x4 m.In cold pavements with load-bearing slabs 6 m these areas should be 3x3 m.

5.10 Along the temperature-shrinkage joints, the laying of strips - compensators with a width of 150-200 mm made of roll materials with gluing on both edges for a width of about 50 mm - should be provided.

5.11 Thermal insulation boards made of expanded polystyrene and other combustible insulation can be used as a base for a waterproof carpet made of rolled materials without a leveling screed only when loosely laying roll material or when using self-adhesive materials, or with mechanical fastening, since the fire method of sticking when burning insulation is unacceptable.

If the thermal insulation boards and the roofing material laid on the thermal insulation are incompatible, a dividing layer of fiberglass or geotextile with a density of at least 100 must be provided between them.

5.12 Vapor barrier to protect the heat-insulating layer and the base under the roof from humidification of the vaporous moisture of the premises should be provided in accordance with the requirements of SP 50.13330. The vapor barrier must be continuous and waterproof.

In places where the heat-insulating layer adjoins walls, lantern walls, mines and equipment passing through the covering or attic floor, the vapor barrier should be raised to a height equal to the thickness of the heat-insulating layer, and in the places of expansion joints it should be brought to the edges of the metal expansion joint and glued hermetically or welded.

5.13 When fixing the roofing carpet with fasteners, their pitch is determined by calculating the wind load (Appendix E).

5.14 In places where there is a difference in height, where the roof adjoins to parapets, the walls of the side skylights, in places where pipes pass, near gutters, ventilation shafts, etc. provide for an additional waterproof carpet, the number of layers of which is recommended to be taken according to Appendix D.

5.15 Additional layers of waterproofing carpet made of roll materials and mastics should be brought onto vertical surfaces by at least 250 mm.

5.22 On unexploited roofs made of elastomeric and thermoplastic roll materials, made by the free-laying method, a slab or gravel surcharge layer should be provided, the mass of which is determined by calculating the wind load (Appendix E).

5.23 The maximum permissible area of ​​a roof made of roll and mastic materials of flammability groups G-2, G-3 and G-4 with a total thickness of the waterproofing carpet up to 8 mm, which does not have protection from a layer of gravel or coarse-grained dressing, as well as the area of ​​areas separated by fire belts (walls), should not exceed the values ​​given in table 4.

5.24 Fire belts should be made as protective layers of operated roofs (5.18) with a width of at least 6 m.Fire belts must cross the base under the roof (including thermal insulation), made of materials of flammability groups G-3 and G-4, for the entire thickness of these materials.

Table 4

5.25 In places where the roof funnels of the internal drainage pass through the roof, a decrease of 15-20 mm is provided within a radius of 0.5-1.0 m from the level of the waterproofing carpet and the water intake bowl.

The axis of the funnel should be at least 600 mm away from the parapet and other parts of buildings protruding above the roof.

5.26 In an expansion joint with metal expansion joints, the vapor barrier should overlap the lower expansion joint, and a compressible insulation is provided in the joint, for example, from glass staple fiber according to GOST 31309 or from mineral wool according to GOST 21880.

5.27 In roofs made of bituminous and bitumen-polymer roll and mastic materials, in the places of abutment to vertical surfaces, inclined wedge-shaped sides with sides of about 100 mm can be provided,.

5.28 In places where the roof adjoins to parapets up to 450 mm in height, layers of additional waterproofing carpet can be brought onto the upper edge of the parapet with lining of the abutment points with galvanized roofing steel and securing it with crutches.

In roofs made of TPO-membranes or PVC-membranes, an additional waterproofing carpet made of these materials may be welded to a TPO-metal or PVC-metal drip tip.

5.29 In roofs with a high (more than 450 mm) parapet, the upper part of the protective apron can be fixed with a metal clamping rail on self-tapping screws and protected with a sealant, and the upper part of the parapet is protected by roofing steel, fixed with crutches or covered with parapet plates with sealing joints between them,.

5.31 On the eaves section with external drainage, the roof is recommended to be reinforced with one layer of additional waterproofing carpet made of roll material with a width of at least 250 mm, glued to the base under the roof (in roll roofs made of bituminous and bitumen-polymer materials), or with one layer of mastic with a reinforcing gasket ( in mastic roofs). In elastomeric roofs (eg EPDM), the waterproofing carpet is glued to the drip tray, and from TPO membranes or PVC membranes, the carpet is welded to the TPO metal or PVC metal drip tip.

5.32 On the ridge, the roof with a slope of 3.0% or more is recommended to be reinforced by a width of 150-250 mm on each side, and the valley - by a width of 500-750 mm (from the fold line) with one layer of additional waterproofing carpet made of bitumen or bitumen-polymer roll material (in roll roofs made of bituminous and bitumen-polymer materials) or one reinforced mastic layer (in mastic roofs) according to Appendix D.

5.33 In grass roofs and inverted roofs, funnels with a drainage ring for water drainage and additional elements made of rot-resistant material, for example, plastic, should be used.

6 Roofs made of piece materials and corrugated sheets

In roofs made of piece materials and corrugated sheets ) due to the increased effect of wind load, continuous gluing of the roofing carpet to the base made of dense low-porosity materials (cement-sand or asphalt screed, foam glass, etc.) is preferable, thermal insulation boards should be glued to the vapor barrier, and the vapor barrier layer to the supporting structure. It is allowed to lay the roofing carpet loosely with a load of concrete tiles on a solution or a concrete layer, the weight of which is determined by calculating the wind load.