Application of polyurethane for building uses in Naples

Nowadays, waterproof coverings must have technical peculiarities no longer negotiable: they must maintain their efficiency over time, even in the presence of increasingly severe mechanical stress (pedestrian transit, event action and high loads), physical (excursions to thermal shock, pressure and condensation of vapors), chemical (acids, solvents and hydrocarbons) and biological (actions of plant roots and microorganisms). The combined action of these factors produces an acceleration of the aging process of the waterproof covering and attached thermal insulation, up to cause its collapse.

In order to avoid any risk and danger for buildings and manufactures of various nature, it is necessary to entrust the works to highly qualified companies in the field of waterproofing and thermo-acoustic insulation, such as Tecnopur.

Thanks to years of intense and constant research, the company has been able to give birth to Puretan, a particular type of polyurethane for building uses, able to respond to all the extreme operating conditions required.

insufflation of the cavity

Two-component polyurethane system for on-site insulation of wall cavities. The injection of the product is carried out with appropriate equipment directly into the cavity through holes made with a diameter of 30 mm. Particularly indicated for walls of tompagno, brick, concrete, iron or similar artifacts of any shape or shape with a minimum thickness of 5 cm, Puretan 20 has the following advantages:

it achieves excellent thermal insulation of external walls with considerable benefit for living comfort and consequent energy saving;
it considerably reduces noise transmission;
it eliminates the formation of moving air foils inside the cavity, which are harmful for the effectiveness of the thermal insulation with consequent formation of condensation and mold;
allows a complete transpiration of the wall allowing the migration of vapors to the outside;
gives greater solidity to the walls, as a complete bonding is obtained between them, and to the supporting structure;
eliminates any possibility of nesting of small insects or animals;
completely seals the cavities;
is physiologically inert, insoluble, not metabolizable, does not emit toxic fumes or vapors.

Trials	Norm	Measure	Average value
Density	EN ISO 2811-1	Kg/mc	19
Thermal conductivity	UNI EN 14315-1:2013 All.C	W/m.K	0,035
Resistance to water vapor diffusion	UNI 8054	µ	5
Compressive strength	UNI 6350	Kg/cmq	0,3

Puretan 20

Application Examples

Tompagno walls

Two-component polyurethane system, ideal for thermal and acoustic insulation of tompagno walls, in brick, concrete, iron or similar structures of any shape or form. Also for this product there are the following advantages:

an excellent thermal insulation of the external walls is obtained with considerable benefit for the living comfort and consequent energy saving;
it is a closed-cell product, therefore waterproof;
it considerably reduces noise transmission;
it eliminates the formation of moving air foils inside the cavity, which are harmful to the effectiveness of the thermal insulation;
can be applied in the desired thickness, continuously without thermal bridges;
allows a complete transpiration of the wall allowing the migration of vapors to the outside;
it gives greater solidity to the walls, as it is completely bonded to the supporting structure;
has an excellent adhesion such as to make a single body with almost all materials;
completely seals the cavities;
is physiologically inert, insoluble, not metabolizable, does not emit toxic fumes or vapors.

Trials	Norm	Measure	Average value
Density	ISO R 845	Kg/mc	35
Thermal conductivity	ASTM C177	W/m.K	0,022
Resistance to water vapor diffusion	UNI 8054	µ	60
Compressive strength	UNI 6350	Kg/cmq	2

Puretan 30

Esempi Applicativi

Asbestos remediation

Puretan 50 is a polyurethane for building uses that waterproofs and insulates at the same time. In addition, it is a continuous coating that can be applied in the desired thickness and is obtained by spraying in place with high-tech machines. Puretan 50 is mainly applied for polyurethane foam overlays, asbestos encapsulation, asbestos cement products and Eternit remediation. In fact, some studies have shown that asbestos cement surfaces, exposed to atmospheric agents in both urban and rural environments, are subject to corrosion phenomena that lead to the release of asbestos fibers into the air, resulting in environmental pollution and health risks for people. For the solution of asbestos encapsulation, less complicated and expensive, Tecnopur intervenes with its own specialized personnel and with its own means to recover the asbestos cement roofing, by applying on site a layer of spray polyurethane foam with which the asbestos encapsulation is obtained. Puretan 50 represents the most suitable solution for many applications, also by virtue of the following advantages

consolidation with improvement of the walkability and mechanical resistance of the slabs;

possibility to intervene quickly and without any interaction with working activities;

encapsulation of asbestos cement eliminating all the problems that this material creates in relation to health and the environment, as the asbestos fibers remain completely encapsulated in the layer of polyurethane foam applied directly on the roof;

no production of toxic and harmful waste, nor need to wash the sheets;

it is a thermo-impermeable product;

it is the only homogeneous product whose molecular structure makes it possible to have simultaneous waterproofing and continuous thermo-acoustic insulation;

excellent resistance to compression and traction;

rapidity of application;

resistance over time;

elimination of thermal bridges as it is applied without interruption of continuity;

remarkable vapour permeability;

elimination of the barrier to vapors;

adaptability to any shape of the laying surface;

no difficulty in application in correspondence of downpipes, skylights, towers, connections with vertical walls;

excellent adhesion such as to form a single body with almost all materials: iron, cement, brick, fiber cement, wood, bitumen, glass and fiberglass;

resistance to acids, solvents and hydrocarbons;

resistance to marine and industrial atmosphere;

unassailability by fungi and microorganisms;

possibility of easy recovery and repair in case of accidental damage.

Trials	Norm	Measure	Average value
Specific weight	ISO 1.23		1.12:1.13
Viscosity	ISO 150:250 cps	mPas a 20C	180:220
Cataltax ratio			01:01
Reaction time: Gel Time			5 sec
Response time: Tack Free Time			19:23 sec
Thickness returned	UNI 9564 (8.6.2.)	cm	02-mar
Density	UNI 6349	Kg/m3	67.5
Adhesion to asbestos-cement	UNI 10686	MPa	0.8
Freeze-thaw resistance	UNI 10686		No bubbles, no flaking. Thickness unchanged. No cracking.
Sun-rain resistance	UNI 10686		No bubbles, no flaking. Thickness unchanged.
Waterproofing and accelerated aging	UNI 10686		No bubbles, no flaking. Thickness unchanged. No loss.
Reaction to fire	UNI 8457	class	1
Impermeability to water	UNI 10686		No loss.

Puretan 50

Application Examples

Thermal insulation and roof waterproofing

Two-component polyurethane spray system, ideal for waterproofing and thermal insulation of civil and industrial roofs, gardens, walls, floors and foundations. Puretan 70 has the following technical characteristics

it is a thermo-impermeable product;

it is the only homogeneous product whose molecular structure allows to have at the same time waterproofing and thermal-acoustic insulation in continuous;

excellent resistance to compression and traction;

rapidity of application;

resistance over time;

elimination of thermal bridges as it is applied without interruption of continuity;

remarkable vapour permeability;

elimination of the barrier to vapors;

adaptability to any shape of the laying surface;

no difficulty in application in correspondence of downpipes, skylights, towers, connections with vertical walls;

excellent adhesion such as to form a single body with almost all materials: iron, cement, brick, fiber cement, wood, bitumen, glass and fiberglass;

resistance to acids, solvents and hydrocarbons;

resistance to marine and industrial atmosphere;

unassailability by fungi and microorganisms;

possibility of easy recovery and repair in case of accidental damage.

Trials	Norm	Measure	Average value
Specific weight			POL. 1.12:1.13
			ISO. 1.23
Viscosity		mPas a 20C	POL.180:220
			ISO 150:250 cps
Cataltax ratio			01:01
Response time: Gel Time			12 sec
Response time: Cream Time			4 sec
Density	PeEN 14315-2	Kg/m3	50-70
Adhesion to concrete	UNI 9564	KPa	282
Adhesion to wood	UNI 9564	KPa	266
Grip on mild steel	UNI 9564	KPa	286
Compressive strength	UNI 6350	Kg/cm2	3.29-5.76 (max)
Initial thermal conductivity	PrEN 14315 e 14318-1	W/Mk	0.025-0.027
Reaction to fire	EN 13501	Euroclass	C-D-E
Water vapor transmission	EN 12086 A method	mg/Pa.m.s	30-40
Impermeability to water			No loss
Tensile strength	UNI 8071	KPa	391.46

Puretan 70

Application Examples

Waterproofing for roofs

It is a polymer belonging to the most recent generation of the polyurethane family. Its development has involved studies and experiments both in the laboratory and on site. It has immediately demonstrated excellent qualities of resistance to chemical and bacteriological corrosion, thermal resistance in the temperature range from -200 °C to 100 °C, excellent adhesion to different substrates and easy processability. Puretan 1000 will preserve structures for decades, reducing maintenance and repair costs. The following are the main areas of application:

Construction: Concrete protection, steel tanks, swimming pools, etc;

industry: flooring, protection of metal structures;

sewerage: coating of pipes, manholes, purifiers;

marine: offshore platforms, protection of recreational structures, metal parts on ships;

industry: flooring, protection of metal structures;

construction of moulded components.

Puretan 1000 also has these advantages

impermeability to water;

Corrosion resistance;

abrasion resistance;

very low roughness surface: increases the flow speed of liquids;

resistance to microbial and bacterial attack;

paintable or mass pigmentable;

easily repairable with itself;

perfect adhesion to various substrates:

no release of hazardous components;

self-extinguishing class 1;

can be used either on site or in the factory;

rapid application, minimises downtime;

speed of drying, walkability;

stable to temperature change -200 °C to 100 °C;

good impact resistance;

free of solvents and glass fibres.

Features	Unit	Valore	Metodo
Density	Kg/m³	1000	DIN 53 420
Hardness at 25 ° C	Shore A	93	DIN 53 505
Hardness at 25 ° C	Shore D	42	DIN 53 505
Traction (elongation at break 425%)	N/mm²	21	DIN 53 504
Traction (100% elongation)	N/mm²	12,4	DIN 53 504
Traction (elongation 300%)	N/mm²	15,2	DIN 53 504
Laceration	N/mm	58	DIN 53 515
Adhesion to steel (without primer)	N/mm²	6,5	ISO 4624
Flexural strength 5%	N/mm²	6,3	ASTM D 790
Flexural strength 10%	N/mm²	6,9	ASTM D 790
Adhesion to concrete	MPa	<3	UNI EN 1542
Thermal compatibility: adhesion; after 50 freeze and thaw cycles	MPa	<3	UNI EN 1542 UNI EN 13687/2
Crack bridging ability a 23° C: static; dynamic	Class	A₅ B₄.₂	UNI EN 1062/7 UNI EN 1504/2 UNI EN 1504/2
Resistance to positive hydraulic thrust	Bar	5	UNI EN 12390/8
Resistance to negative hydraulic pressure	Bar	2,5	UNI EN 8298/8
Permeability to water vapor	Sd	< 9m	UNI EN ISO 7783/1
Permeability to CO₂	Sd	> 100m	UNI EN 1062/6
Slip / creep resistance	Class	Class I: 23 units Class II : 56 unit	UNI EN 13036/4
Resistance to artificial atmospheric agents	Hours	2000 hours (of UV rays and condensation)	UNI EN 1062/11
Abrasion resistance	Mg	< 120	UNI EN ISO 5470/1
Impact resistance	N·m	> 30	UNI EN ISO 6272

Puretan 1000

Application Examples

Foundation treatment with polyurethane foam applied by spraying

“Geopur Polyurethane is the ideal option for waterproofing and insulating the foundation. Thanks to the way it is applied, it has no joints or cracks through which moisture can enter the building; no other product can achieve this result without additional layers of waterproofing.” GEOPUR Here are some advantages…

Resistance to moisture, temperature differences, plants and insects.

Low thermal conductivity.

Adheres to the building and prevents condensation.

10-year warranty.

Reduces the building’s heating costs.