The main tasks of any roof structure – protect the building from rain and heat loss. If over time ceases to hold at least one of them, the roof requires immediate repair. To minimize exposure to harmful environmental factors and prolong the service life of the roof, it is recommended to arrange inversion roofing.
There are a few common structures of the roof to solve the problem of insulation roofing insulation boards in the construction or major repairs.
Currently, the inversion of the roof as one of the roof insulation solutions are well known and widespread. This design allows you to use the space efficiently, allowing you to place the car park, pedestrian zones, green areas, etc.. directly on the roof of a building or structure. Besides, by increasing the turnaround time of operation compared to conventional designs, inversion roofing to reduce operating costs.
Called inversion roofing, design which "inverted" relative to traditional roof. There waterproofing layer located under the insulation layer of insulation boards. This solution provides additional protection for the waterproofing layer from external adverse effects.
Extruded polystyrene is one of the few materials, applicable for thermal insulation of the roof and inverted roofing, tk. it is resistant to decay and promotes mold and mildew, It has the necessary strength and durability with almost zero water absorption. Roof insulation devices Technology, Working drawings of units and recommendations for the insulation of the roof you can see in the album of technical solutions.
Inverted roof with gravel backfill
Waterproofing membrane is laid on the screed razuklonnoy, located on the concrete floor. While insulating the roof top of waterproofing insulation boards are stacked with the end of "quarter". Further, over the insulation boards, stacked filter layer of geotextile (cloth laid overlapped). For unexploited roofs (by geotekstilyu) arranged bed of gravel (fractions 20..30 mm) – prigruzochny layer, thickness of at least 50 mm.
Roof with a seating area for pedestrians
Very often built residential and administrative buildings with a roof, used as recreational areas, usually with inversion roof. As prigruza (upper layer) used flooring paving slabs. Such a flooring laid on top of the gravel backfill thickness of at least 30 mm (fractions 5-10 mm), gravel-sand mixture, rarely – sand.
The design of the roof allows inversion arrange the green coating zone. In this case, the insulating panels suit: filter-bed (например, geotextiles); dreniruyushtiy layer, например, coarse gravel; filter-bed; soil substrate layer. In this arrangement, the main advantage is preserved inversion roofing – mechanical protection of the waterproofing membrane, created by a heater and overlying layers.
Roof, available for transport
A similar construction is used for roof stripping flat roofs public, industrial and residential buildings. Depending on the design features and loads of intensity of use insulating panels of different density, wherein between the slabs and pavers Extrol (top filter layer), also include gravel backfill minimum thickness 30 mm.
Tips apparatus inversion roofing:
Insulation panels are used within the operating temperature range of -50 + 75 ° C ... When the output of range – plate may irreversibly change the geometrical dimensions, lose mechanical and thermal insulation properties.
When selecting an adhesive or foam should pay attention to the instructions – whether the composition is suitable for bonding of extruded polystyrene foam. It is better to use special adhesive foam, widely represented in DIY stores.
Insulation for the roof has a high chemical resistance to many construction materials and substances, wherein the organic substance, containing solvents, means a water-based wood preservatives, and diluents of paints, and – acetone, acetate, Oil toluene, etc., may lead to a softening or shrinkage of extruded polystyrene foam.
Lightweight roofs of industrial buildings
As the name implies, such roof structure arranged for reconstruction of flat roofs with a base of metal sheeting, to provide a reliable, lightweight and technologically advanced in the performance of the construction of industrial buildings, as well as the simplicity of its further exploitation.
Processing methods on the device lightweight roofing:
Produced steam prepared surface profiled metal sheet roofing, antykorrozyynoy, or waterproofing mastic - Broken, or along the joints.
Insulating panels are stacked in a width, greater than the transverse dimension of the stacking later separation filter layer, with partial temporary fixation plates.
Cloth waterproofing membrane secured overlap (longitudinal – 120 mm, transverse – 70 mm) laid over. In some cases, increase the width of the overlap.
Panels waterproofing membrane is fixed with screws using metal plates.
Using welding equipment, welding adjacent panels operate waterproofing membrane with a weld width of at least 30 mm and overlapping mechanical attachment.
The number of fasteners to 1 m² depends on the wind load in the construction area and is determined by calculation. Load per fixing element ~ 0.5 kN (It depends on the type of fasteners), the distance between the fastening elements 200..500 mm. The length of the fastener depends on the design of the roof and its base material.
Designs are also shown in the album of technical solutions. Proposed solutions for lightweight roofing device can reduce the load on the load-bearing structures (compared to the traditional solution of the roof and other heaters) with 70 to 5 kg / m2.
Pitched roofs of residential and public buildings
For residential and public buildings, less industrial, pitched roofs are also of great interest. This allows for the roof over the interior layout options, and is the fifth facade of the building, giving additional architectural expression.
When such roof insulation quality for roof insulation rationally dispose a heater plate over the rafters, isolating the entire roof area without any gaps. fasteners perform, using nails. waterproofing (sheet metal, metal and others.) located on the crate, formed over the insulation layer.
One for device insulation pitched roof is such a construction, wherein the additional heat insulation layer is mounted on top of the rafters, and the main part of a heater thus located in the space mezhstropilnom. Permitted to use insulation boards fixed to the rafters from the attic. This design provides additional insulation of existing (reconstructed) roof.
Major repairs and roof insulation
Most of the old, maintained buildings do not meet modern requirements of heat engineering. Therefore, in the reconstruction of such buildings, in accordance with the requirements of SNIP, We need to take additional measures for insulation of buildings and roofs.
The simplest option for warming the roof on the device additional insulation from the point of view of work, following: first clean filling available, producing an audit coating structure, and, in case of need, repairs. On cleaned and repaired coating deposited insulation for roofs, on top of it, carpet layer for protection from debris, and perform backfill gravel.
In cases, when the carrier coating ability does not allow a similar design, produce a complete dismantling of the old roof insulation with replacement with new material, and, in case of need, strengthening of bearing roof structures.
Таким образом, Roof insulation from extruded polystyrene foam is widely used in the insulation pitched roof, during overhaul of the roof, and especially, at the device lightweight buildings and industrial coatings inversion roofs of buildings general-purpose.
Design of roof structures for the examples discussed in the article must be carried out taking into account all the material properties, as well as the requirements of normative documents in construction. note, the album was released on the technical solutions for ease of design , It allows you to choose a standard solution for roof insulation and roofing for each case.