waterproof terrace
reversibility of
greater durability of the intervention
I. Introduction Description and location.
II. Analysis of degradation and needs of the client
Hp: The structure is characterized by bearing elements in c.a. divided into columns and beams. The floors are of brick and cement type and the roof is made of reinforced concrete slab, sheathing, cement screed and finish the final ceramic. The terminals are in marble, while the parapets are in concrete. The terminals are regularly interrupted the graft of the iron railings, and railings are finished with an acrylic finish.
In order to remove the causes that have led to a priority and still determine the degradation is necessary to adjust the reported plan coverage. In fact it is necessary to assume that the layer of waterproofing sheath posed at the time of construction of the artifact known numerous solutions of continuity difficult to detect. Also, do not appear to be sufficient nor the slopes of the roof nor the points of collection and disposal of rainwater. At the perimeter, terminals marble, not equipped with suitable drip, led to the degradation of the vertical walls of concrete by determining the underlying esfolizione of the topcoat. They also appear cracked and flaking. The railings and handrails at the same time, they are severely oxidized and need restoration.
The remedial action required, however, must meet the following needs expressed by the client: - Walkability of the hedge; - Reduced maintenance of the hedge; - Reduced load of the shell; - Minimization of the costs of the intervention and those of management.
III. Proposed intervention - dry installation
As a priority, it is necessary to remove the parts in concrete, balconies and associated fronts, flaking by means of detailed examination of the facades operated aerial basket. The operation should be conducted prior to the inhibition walkway and driveway of the house areas affected by the intervention. Simultaneously it must remove all terminals marble at the plane coverage
1. Hire aerial basket days ....
2. Examination of the facades and removing deteriorated concrete parts loose (it is assumed the removal of 10% on concrete) ml ... approx.
3. Removing terminals marble floor covering ml ... approx.
The restoration of the parts in concrete and contextual painting of the concrete surfaces will be different according to the technical specifications.
WATERPROOFING In order to remove the causes of the deterioration in the interior below the floor cover and at the same time comply with the needs expressed by the client proposes the following action.
It is hypothesized that the removal of the terminals marble has occurred previously.
4. Preparation and cleaning of the surface concrete perimeter (width 20 cm.), Home of the terminals removed by removing the loose material and friable
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5. Waterproofing perimeter of the substrate and the vertical band below (15 cm.) By applying a product that I will have the following technical characteristics:
Waiting time before laying coating: 3-4 hours
Complete drying of a 1 mm: 12 hours
Initial adhesion EN 14891 - A.6.2 (N/mm2):> 0.5
Crack bridging:> 0.75 mm.
(Equivalent to Mapelastic Features AquaDefense ® Mapei SpA rules for the application are given in the technical data sheet). [1] Alternatively, you can use Mapelastic ® Mapei SpA (The methods of application are indicated in the technical data sheet). [2]
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6. Preparing the plan coverage: carrier support (ceramic flooring) must be made smooth, clean, dry, with corners and edges with regular initial cleaning. In addition, you will have to check the slope of the plane. In case this is not at least 1% you will have to intervene promptly made plans suitably inclined by shaving cement thickness from 1 to 20 mm. having the following characteristics:
Working time: 15 minutes.
Thickness of application: from 1 to 20 mm.
Foot traffic: approx. 2 hours.
Waiting time before installation: 4-6 hours for ceramic tiles and natural stone.
Color: gray.
EMICODE: EC1 R Plus - very low emission.
Storage: 12 months.
Application: metal spatula.
Consumption: 1.6 kg / m² - per mm of thickness.
Packaging: 25 kg bags.
- (Equivalent to Nivorapid ® features Mapei SpA rules for the application are given in the technical data sheet). It is hypothesized to have to regularize and give due gradient to 10% of the areas concerned.
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7. Laying Layer Compensation: Supply and installation of compensation layer made of non-woven 100% isotactic polypropylene obtained by bonding mechanical needling, heat stabilized with the exception of the hill, termocoesionato, model PP Sarnafelt weight of 400 g / m2. Rot, is resistant to microorganisms and rodents having the following characteristics:
Color: black;
Length: 50,00 m;
Width: 2.00 m;
Thickness (with load 2 kPa): 2.6 mm (- 20%), according to EN ISO 9863;
Mass per unit area of 400 g/m2, according to EN ISO 9864;
Permeability normal to the plane, VlH50: 65 mm / s (- 30%), according to EN ISO 11058;
Tensile strength, longitudinal: 10.0 kN / m (- 20%), according to EN ISO 10319;
Tensile strength, transverse: 16.0 kN / m (- 20%), according to EN ISO 10319;
Elongation at maximum load, longitudinal: 95% (- 30%), according to EN ISO 10319;
Elongation at maximum load, transverse: 85% (- 30%), according to EN ISO 10319;
Resistance to static (CBR test): 2.2 kN (- 20%), according to EN ISO 12236;
Drilling dynamic cone drop test: 15.0 mm (+ 20%), according to EN ISO 13433;
Durability expectation: Minimum of 25 years in natural soils with a pH between 4:09 and a soil temperature of less than 25 ° C, according to ENV ISO 13438;
Production with quality system certified to ISO 9001 and ISO 14001;
CE certified according to EN 13249/13250/13251/13253/13254 / 13255/13256/13257/13265.
Dry installation with overlaps of 10 cm.
The layer must be turned up along the vertical wall in correspondence of the railings for at least 15 cm.
square meters ....
8. Laying Sheet Waterproofing: Supply and installation of synthetic roofing waterproofing membrane made of "alloy" of flexible polyolefin (FPO) of high quality, glass fiber reinforced, single-ply not prelaminated, UV-resistant, model TG 66 SARNAFIL -15 1.5 mm thick, obtained in a single layer by a process of direct coating by extrusion in single pass on the two faces of the armature having the following characteristics:
Surface: smooth;
Color upper face: beige;
Colour lower face: black;
Visible defects: Complies according to EN 1850-2;
Length: 20 (-0 / +5%) m, according to EN 1848-2;
Width: 2 (-0.5 / +1%) m, according to EN 1848-2;
Straightness: ≤ 30 mm, according to EN 1848-2;
Flatness: ≤ 10 mm, according to EN 1848-2;
Thickness: 1.50 (-5 / +10%) mm, according to EN 1849-2;
Mass per unit area: 1.50 (-5 / +10%) kg/m2, according to EN 1849-2;
Water tightness, water resistance: Conforms according to EN 1928
Exposure to liquid chemicals, including water: Upon request, according to EN 1847
Reaction to fire: Class E according to EN ISO 11925-2, classification after EN 13501-1;
Shear strength of the joints (welds): ≥ 500 N/50 mm, according to EN 12317-2;
Transmission properties of the water vapor: mu = 150,000, according to EN 1931
Longitudinal Tensile strength: ≥ 9 N/mm2, according to EN 12311-2;
Transverse breaking load: ≥ 7 N/mm2, according to EN 12311-2;
Longitudinal elongation at break: ≥ 550%, according to EN 12311-2;
Elongation at break transversal: ≥ 550%, according to EN 12311-2;
Impact strength (rigid support): ≥ 800 mm, according to EN 12691;
Impact strength (soft support): ≥ 1,000 mm, according to EN 12691;
Resistance to static load (soft support): ≥ 20 kg, according to EN 12730;
Resistance to static loading (rigid support): ≥ 20 kg, according to EN 12730;
Resistance to root penetration: In compliance according to EN 13948;
Dimensional stability (longitudinal): ≤ 0.2 ½ ½%, according to EN 1107-2;
Dimensional stability (transversal): ≤ 0.1 ½ ½%, according to EN 1107-2;
Flexibility at low temperature: ≤ -30 ° C, according to EN 495-5;
Artificial aging by long-term combined exposure to UV radiation, high temperature and water: Meets, according to EN 1297 (> 5000 h);
Exposure to bitumen: Compliant, according to EN 1548;
Production with quality system certified to ISO 9001 and ISO 14001;
CE certified according to EN 13956, complies with the requirements of SIA V 280.
Having high chemical stability, broad-spectrum resistance to leaching of substances, advanced ecological profile. Free of halogenated compounds, plasticizers, bitumen and heavy metals.
Dry installation with overlaps of 8 cm.
For fusion welding of heat-trapping warm air through the contribution of Sika-Sarnafil systems with manual and automatic, after preparation / cleaning with Sarnafil T PREP.
The layer must be turned up along the vertical wall in correspondence of the railings for at least 15 cm.Tutte the manual welding must be carried out in three phases:
welding of the sheets
presaldatura with formation of the inner bag
final welding airtight.
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9. Protection layer: Supply and installation of protection layer made of non-woven 100% isotactic polypropylene obtained by bonding mechanical needling, heat stabilized with the exception of the hill, termocoesionato, model PP Sarnafelt weighing 300 g / m2. Rot, is resistant to microorganisms and rodents having the following characteristics:
Color: black;
Length: 50,00 m;
Width: 2.00 m;
Thickness (with load 2 kPa): 2.2 mm (- 20%), according to EN ISO 9863;
Mass per unit area of 300 g/m2, according to EN ISO 9864;
Permeability normal to the plane, VlH50: 85 mm / s (- 30%), according to EN ISO 11058;
Tensile strength, longitudinal 6.5 kN / m (- 20%), according to EN ISO 10319;
Tensile strength, transverse: 10.0 kN / m (- 20%), according to EN ISO 10319;
Elongation at maximum load, longitudinal: 85% (- 30%), according to EN ISO 10319;
Elongation at maximum load, transverse: 85% (- 30%), according to EN ISO 10319;
Resistance to static (CBR test): 1.5 kN (- 20%), according to EN ISO 12236;
Drilling dynamic cone drop test: 19.0 mm (+ 20%), according to EN ISO 13433;
Durability expectation: Minimum of 25 years in natural soils with a pH between 4:09 and a soil temperature of less than 25 ° C, according to ENV ISO 13438;
Production with quality system certified to ISO 9001 and ISO 14001;
CE certified according to EN 13249/13250/13251/13253/13254 / 13255/13256/13257/13265.
Dry installation with overlaps of 10 cm.
The layer must be turned up along the vertical wall in correspondence of the railings for at least 15 cm.
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10. Mechanical Fastening Perimeter: Supply and installation of mechanical fastening linear position along the perimeters and areas of connection between vertical plane and, in accordance with the recommendations in the specific standard for flat roofs SIA 271, consisting of: - Profiles of mechanical fastening perforated, made of galvanized carbon steel sendzimir, thickness 2.0 mm, width 30 mm, SARNABAR. The profiles have specific section which ensures high mechanical strength;
- Fasteners suitable for the type of support / structure present along the perimeters, minimum 4 pcs / m (subject to verification and approval by Sika Sarnafil); - Curb contrast tear Ø 4 mm to be placed through thermo-fusion adjacent to the profile Sarnabar. This mechanical attachment must be made to avoid dragging waterproof coat dry-laid, due to deformation of the substrate, movement of the thermal insulation or other materials below, in accordance with the recommendations of SIA 271. Particular care must be taken when fixing at the railings of the presence of capobastone. The fixing shall be made in the vertical part and shall be such as to allow a quick and proper disposal of water percolation.
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11. Mechanical cleaning iron railings by sandblasting to remove the old coating is that oxides of iron (sandblast finish with at least the type Sa 2:5).
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12. After surface preparation, you will have to make the painting process: - 2 coats of primer PVC-based alkyd modified with zinc chromate (80-100 mM) containing containing substances (pigments) passivating (oxide of lead, chromates, phosphates and borates goal), have good adhesion to the metal substrate and allow a good anchor with the coat of paint next (second hand); - 2 intermediate coats of paint based on modified alkyd PVC pigmented with micaceous iron oxide (120 mM); - 1 final coat of pigmented alkyd PVC with the desired color (30 mM).
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13. Squares Stands On Couch Walkable: Supply and laying of paving slabs made with squares of concrete surface with washed gravel, reinforced model with rod diagonally. Quadrotto Size: 50 x 50 cm, 40 x 40 cm and dry laying out specific synthetic substrates, subject to any interposition of the separation layer. It should be noted that the concrete tiles may eventually be replaced by other finishes (ceramic, synthetic materials, wood, etc..).
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