ISO SYSTEM

OVERVIEW

The technology DAMP STOP against rising damp in masonry,  has a  high level of reliability established in thirty  years of use in historical buildings, civil – engineering works and rural construction both in Italy, in Europe and other Countries all over the world.

The DAMP STOP  technology by injection can be defined as a final solution for the problem of rising damp.

The injection system  is extremely versatile and can be used in any kind of masonry (as differentiated  by type, consistency, capillary pressure and salinity level), in all categories of buildings (historical, urban, suburban or rural etc.) and in various types of structure/construction (above – ground, underground, in waterbeds, etc.)

The main advantages include very good penetration capacity of product , permeability to water vapour, high chemical resistance to alkali and micro – organisms and  durability. The system is very effectiveness and suitable for Cultural Heritage protection.

DAMP STOP  technology is a brand guaranteed  by G&P intech all over the world.

Highly specialised personnel is available for assistance in application.

    

CEMESAN is a special macroporous plaster of 2 cm thickness able to solve  rising damp problems for masonry. The product is available in different range of use that is ready mix CEMESAN  PREMIX and a cost saving solution special for export CEMESAN compound to be add to local sand.  The resulting high degree of humidity diffusion makes this an ideal component in mixes used to cover masonry subject to rising capillary and interstitial humidity. The type CEMESAN R is hydraulic lime basis for hystorical buildings and monuments.

 

PRODUCTS

DAMP STOP is a technology that includes a special injection material  DAMP STOP available in three different formulations:

1. DAMP STOP I: for application in masonry with low saline content. This type is usable in most cases.

2. DAMP STOP SI: for application in masonry where the saline contents (especially chloride) is very high

e.g. near the sea or when buildings are used for particular purposes.

3. DAMP STOP W: very low VOC, without solvent, concentrated product water  base for application in poorly – ventilated environments. Suitable for export.

TECHNICAL DATA

Type                                                                                                I – SI                  W

– Sp. Gr.                                                                                      0.85 g/cm3       0,98 g/ cm3

– Viscosity at 20°C                                                                     25-35 cps        30 – 35 cps

– Reduction of permeability to vapour (DIN 52615)                      ≤ 5%                ≤5%

– Frost (freeze/thaw) test on treated brick (DIN 53122)           ≥20 Cycles    ≥20% cycles

INSTALLATION

Before injecting the product, the construction or masonry to be treated has to be examined and

analysed chemically to determine the degree of humidity present, the saline content, masonry

type and to establish whether any plaster is present.

DAMP STOP is applied in the phases described below:

– Preparation of the support with removal of any plaster over a section of at least 50 cm. from the floor level. It is generally best to remove plaster in an area extending to about 50 cm. above the evident

line of humidity and saline laitance or efflorescence.

– Preparation of the products: DAMP STOP I-SI is ready to use. DAMP STOP W has to be diluted in clean water at the rate of  1:10. The product diluted has to be used in the same day.

– Preparation of the holes used for injection. The holes must be located at about 15 cm. above the indoor

floor level and/or external ground level if the latter is at the same height as the internal flooring surface.

Any differences in level between internal and external floor/ground levels must be taken into  consideration when determining the height of areas in which the product is to be applied.

– Holes, which should have a basic diameter of 12 mm., are bored along one horizontal line if the face is

in brickwork or along two horizontal lines if the face is formed by stone and/or other materials embedded

with absorbent mortar. The centre distance of the holes can vary from 10 to 15 cm. depending on

the degree of absorption of the materials found in the masonry face. Dept of the holes is normally equal

to 75-80%of the total thickness and is reached in subsequent stages. The remaining 20-25% is reached

by the liquid by diffusion.

– When thickness exceed 90 cm., it is preferable to work on both sides of the masonry. For high masonry

thicknesses (above 90 cm.), where injection will be carried out on one side only, the hole diameters

should be larger (14-16 mm.) to facilitate boring. It is usually preferable to make the holes with a

downward inclination of 3-5%.

– The DAMP STOP  liquid is injected into the holes at variable pressure, depending on the absorption of the masonry, at an average of 5 bar. The equipment used is a special pump (DS 16) equipped with 16 nozzles fitted with build – in pressure gauges and injectors with rubber rings for control of liquid flow.

The injectors are introduced in the holes and then sealed.

Injection, which, on average, least 10-15 minutes, can be considered as terminated when the impregnating liquid visibly wets the surface of the masonry face. For subsequent plastering operations refer to G&P intech  Technical Manual ( see also CEMESAN macroporous plaster).

Consumption of DAMP STOP  liquid in masonry depends on various factors such as type and porosity level of the wall, capillary pressure, consistency, presence of fissures or void spaces. Normally consumption of

DAMP STOP  liquid is approx. 200  g/m/cm. of bored thickness, while consumption of concentrated

DAMP STOP  W liquid is approx. 25  g/m/cm.

The DS 16 pump complete with 16 nozzles 30 cm length is manufactured by the Company and available upon request. Nozzles with different length are also availables.

CEMESAN PREMIX

Special macroporous plaster  of 2 cm thickness able to solve  rising damp problems for masonry. The resulting high degree of humidity diffusion makes this an ideal plaster for masonry subject to rising capillary and interstitial humidity. The version R is hydraulic lime basis material for hystorical buildings.

TECHNICAL DATA

– aspect                                                                                 gray powder

– water mix                                                                                 18-20%

– yield for 2 cm thickness                                                    24-25 kg/m2

– Permeability to vapour  µ (DIN 56215)                                   9-10

– Thermal conductivity coefficient                                   0.25-0,30  W/mK

INSTALLATION

Remove the old plaster from the wall to be treated, clean thoroughly and then treat with the

AS 100 W  salinity stabilizer, if necessary.

Humidify the supporting surface thoroughly 15 to 20 minutes following application of the AS 100 W to

determine the appropriate hygrometry grading.

Prepare the surface with a rough coating, preferably using the same CEMESAN  PREMIX.

A few hours or one day after the application of the rough coating,  the  plaster can be applied.

Apply  by machine or manual. The optimum thickness, which provides the correct degree of dehumidification is 2 cm. Finish off with a setting coat, using CEMESAN FINITURA

or ready – mixed finishing plasters. Paint the surface by using those with good transpiration coefficient.

Ask to the Company for any assistance.

 

CEMESAN

Special compound to prepare on site a macroporous plaster able to solve  rising damp problems for masonry. The product is available in a cost saving solution special for export CEMESAN compound to be add to local sand and water. The version R is hydraulic lime basis material for hystorical buildings.

TECHNICAL DATA

– aspect                                                                                  gray powder

– yield for 2 cm thickness                                                        5-6 kg/m2

– Permeability to vapour  µ (DIN 56215)                                     6-6.5

– Thermal conductivity coefficient                                    0.25-0.30  W/mK

INSTALLATION

Remove the old plaster from the wall to be treated, clean thoroughly and then treat with the

AS 100 W salinity stabilizer, if necessary.

Humidify the supporting surface thoroughly 15 to 20 minutes following application of the AS 100 W  to

determine the appropriate hygrometry grading.

Prepare the surface with a rough coating, preferably using the CEMESAN  binder itself with a

binder/sand weight ratio of 1: 2.5/3.0. The rough coating must be applied loosely to a convenient

thickness, using sand with granular grading of 2.5 – 3.0 mm.

A few hours or one day after application of the rough coating the  plaster can be applied.

Mix 1 bag (20kg.)  with 5-6 pails of builder’s sand (1 part of CEMESAN  to 3 parts of sand) and 10-11

litres of water. Use sand with a maximum granular grading of 2 mm. The optimum thickness, which

provides the correct degree of dehumidification is 2 cm. Finish off with a setting coat, using CEMESAN

FINITURA or ready – mixed finishing plasters. Paint the surface by using those with good transpiration coefficient. Ask to the Company for any assistance.

AS 100 W

Special salinity stabilizer in liquid form, carried in water,  suitable for the prevention and treatment

of any form of salinity. AS 100 W , also used for very strong concentrations of salinity, is particularly

suitable for application in masonry which has to be treated for rising damp by plaster. Through various combined and synergetic reactions, the chemical substances in this product inhibit the continual transformation (hydration-dehydration) of salts-especially hygroscopic salts-present in the masonry to which it is applied.

INSTALLATION

The surface to be covered must be free from its old  plaster and throughly cleaned.  Apply

the product to the masonry, using a low-pressure sprayer or brush and working from the lower parts upwards until

the surface is saturated. Normally, two coats of the product are sufficient and the second coat should be

applied over the first while still wet.

Application of a rough coating of CEMESAN plaster or other type of compatible plaster must be carried

out  following treatment with AS 100 W , but the surface has to be previously humidified

with water. Note that if application of rough coating takes place after a number of hours, there may be problem with adhesion of the plaster.

The yield is approx.  0.3-0.5 kg/m2.

 

TERMAL RENDER U

Insulating, natural, mineral, fiber-reinforced render.

Description

TERMAL RENDER U is a mineral render with high insulating capacity produced with light, natural, aggregates materials and hydraulic binders. TERMAL RENDER U will not deteriorate, will not alter in time, and is not affected by insects or mould. TERMAL RENDER U withstands the effects of atmospheric agents. TERMAL RENDER U comply with EN 998-1.

 

Uses

TERMAL RENDER U offers a high degree of thermal insulation and, thanks to its specific polyvalence, can be used to replace any other thermo-insulating materials. The material can be used to create mineral, permeable, heat-insulating, render coatings with high durability for the insulation of buildings on concrete and masonry or any other type of thermal insulation uses, also when applied in low thicknesses.

 

Advantages

General: TERMAL RENDER U provides a very high degree of insulation also at low thicknesses as a result of the characteristics of the components used in its particular formula, the use of amorphous silica and thanks also to the method of production.

Low thicknesses: On account of its specific quality, this product allows the user to obtain a high degree of insulation with a thickness of only 2,5-3 cm.

Permeability: Thanks to the characteristics of the materials with which this product is produced and its aerated structure, TERMAL RENDER U offers a very high degree of permeability, which facilitates the migration of water vapour towards the outer surfaces, thereby eliminating condensation and humidity (and mould), which can greatly reduce the insulating effect of low-conductivity materials. Masonry and building structures thus stay dry at all times and thermal insulation remains at a constant very high level.

Qualitative protection: Outdoor application of TERMAL RENDER U as an insulating agent decreases the risk of excessive ranges of temperature variation in the winter and summer periods. The phenomenon of structural expansion, an adjunctive cause of fracturing and cracking, is thus limited and long-lasting, effective protection is guaranteed.

Thermal shield: The insulation system created by the use of TERMAL RENDER U allows for the elimination of ‘thermal bridges’ or points of ‘structural interruption’ in a building, such as floors which come into contact with outer walls or points where two external walls join. From experience, it is possible to state that such areas and structural points feature high rates of thermal dispersion, and in an internally isolated building, can reach approximately 20% of total dispersion. Elimination of ‘thermal transfer bridges’ eliminates the formation of condensation in the corners of rooms, on ceilings and in walls, the areas with the highest levels of conductivity and the lowest surface temperatures. This is possible because by isolating these areas on the outside, the internal temperature will never fall below dew point, which ensures a high level of environmental comfort for persons inside the building.

Fiber-reinforced: TERMAL RENDER U is fiber-reinforced. This limits the formation micro-fissures and cracks caused by plastic shrinkage.

Mechanical resistance: TERMAL RENDER U provides a high level of mechanical resistance to compressive strength and impact and can be easily restored just like any normal plaster. As it resembles common renders, TERMAL RENDER U easily allows for recasting in future structural work or building maintenance and adheres homogeneously to the previously applied layers.