11 Roof insulation advantages
With the insulation of the roof , Gikas Roofing succeed in giving a definitive solution to the often occurring problems of thermal insulation, inflow of water – moisture, cracked & broken tiles in your roof.
Advantages of Roof Insulation:
- Final solution to rainwater inflow: Absolute sealing of the roofs is ensured.
- Energy saving: Reduce bills for heating and cooling your home and therefore quickly pay off your investment.
- Reduction of outside roof temperature up to 50%.
- Reduction of internal building temperature up to 25%.
- Complete renovation of the roof: Your Tile Roof will become like new and will remain new for a long time.
- Quick system implementation: The repair / renovation is completed in a very short time.
- Due to its fast application, it can be applied in almost all seasons.
- Earthquake protection – Static: Minimal weight added to the building.
- Very low cost of thermal and waterproofing: You do not need to remove your defective tiled roof or roof.
- No special planning permission is required.
- Written multi-year warranty
Roofs can be thermally insulated either:
- entirely externally or,
- entirely internally
The first case consists mainly of construction while the second repair. In both cases there is a need for ventilation to prevent condensation.
Types of roofing
In the thermal insulation of roofs we distinguish the wooden and the sloping concrete roofs. Depending on the type of tile used (nailed / laced or muddy), the final choice of the configuration of the final receiving surface of the tiles is made. Roofs under which people usually live or work are considered warm roofs. In this case the thermal insulation is done either externally or internally on the sloping surface of the roof. In the case where there is a horizontal slab between the roof space and the living space, with limited traffic, then the roof is characterized as cold. In this case the thermal insulation is done on the horizontal plate. Thermal insulation materials intended for the thermal insulation of sloping roofs must have properties suitable for the application, such as:
- Low coefficient of thermal conductivity, to use the smallest possible thickness of material.
- Resistance to water vapor permeability, to reduce the risk of water vapor condensation in the contact area of the concrete element and insulating material, when the latter is placed internally.
- Ease of handling in terms of weight, dimensions, mechanical strength and the way the material is fastened.
- Ease of cutting, shaping and adapting to the shapes of the roof elements.
- Possibility of good assembly of the pieces of insulating material, in order to avoid the thermal bridges and the lines of condensation of water vapor in its joints.
Roofs covered with muddy tiles
For the thermal insulation of roofs made of reinforced concrete slabs, it is recommended to install thermal insulation on the upper side.
Gikas Roofing engineer who will study the thermal insulation of a roof covered with muddy (“swimming“) tiles, must take into account three factors that determine the correct construction:
- First, it will determine if the slope of the roof and the type of tiles he has chosen can ensure the desired degree of water tightness. Otherwise, choose the location and type of sealing layer to be used, i.e coating material or sealing sheets.
- Second, it will protect the roof from the dangers of slipping and wind suction of its coatings.
- Third, it will address the problem of thermal stress of the tile mud on a high-performance insulating material.
Indicatively, the series of works for the thermal insulation of a roof that does not need additional sealing is described:
- Smoothing of the reinforced concrete slab.
- Manufacture of boxing beams of insulating material.
- Installation and welding of insulation on the concrete slab with suitable asphalt adhesives special for extruded polystyrene slabs or polyurethane adhesive insulation.
- Fastening a light mesh on the insulation with hairpins and anchoring it to its perimeter boxing beams.
- Mud and laying of tiles.
- Gutter construction.
Classic way for nailed tiles
The thermal insulation of the roof, done with a system efficient and suitable for traditional types of roofing materials, allows a significant reduction of energy losses of the building. If applied to the structure, the thermal insulation also performs an important protective function in relation to the structure itself, especially when it is made of wood. In most cases and for sloping roofs (wooden or beech), wooden beams and poles are used in a formation, so that there is ventilation with an intermediate empty part. The distance between the bars is usually 315 mm, for the use of the most common nailed tiles, for the use of the most common nailed tiles.
- Ready for easy cutting by hand every 315mm.
- It has a direct and accurate application in the predetermined dimensions between the rafters and the rafters.
- Significantly reduces application time and grout, while offering greater thermal insulation protection.
Finally, the roof is tiled following the known construction methods.
In buildings where the attic is not used for roofing purpose, thermal insulation can be done by placing an insulating layer on the surface of the top floor. In this case, insulation will be used, which will offer an excellent continuation of the insulating layer, simple to install and unaffected by moisture and water-coagulation-melting alternations.