The difference between exterior wall putty

Flexible putty by high quality cement, packing, synthetic polymer and other additives. Depending on the putty flexibility and water resistance, can be divided into ordinary exterior wall putty, flexible anti-cracking putty, flexible putty of exterior wall and water resistant exterior wall putty.


water resistant putty is a kind of architecture putty, especially one can reach the building indoor use putty ( JG/T298- 2010). N type of putty, namely the standard of water resistant putty. Water resistant putty on the wall after normal service life should be in more than 15 years, and generally not water resistant putty outer latex paint protection can only reach five years or so.


the features of flexible putty


water resistance


external wall thermal insulation system in the natural environment, often damaged by water. The outside surface of exterior wall thermal insulation system is putty, putty layer only a thin layer of paint. Exterior wall thermal insulation system in practical use are often damage by external forces, such as the impact, scratch, etc. Paint surface damage easily, make the putty layer is exposed to the natural environment. Encounter rain, snow, low temperature, the putty layer will be rain, repeated freeze-thaw damage. Therefore, the external wall thermal insulation system for resistance to water damage, putty layer has good water resistance, resistant to the outside world into the water, to soften the putty layer falls off, to maintain the system stability, and flexible putty has very good water resistance. Flexibility





external wall insulation system long-term rapid temperature difference, thermal stress is quite big, main performance in the surface. Due to the thermal insulation layer of the excellent insulating performance, thermal insulation layer surface temperature can reach 80 summer, summer continuous sunny day after the sudden rainstorm caused by surface temperature can reach 50, summer heat will accelerate aging on the surface, so the thermal insulation layer surface is easy to crack. Through theoretical research and practical application, it is concluded that 'rigid waterproofing technology route' is the main cause of the thermal insulation layer surface cracks. Under the influence of the technology route, the materials used are of the prestressed, high strength, high modulus of elasticity, thermal stress for the full release of the left posterior.


the characteristics of water resistant putty


feel good


water resistant putty smooth surface after construction, by light putty gives greasy feeling, after processing can be used as adornment layer, have adornment effect.


good durability


ordinary putty poor resistance to water, later when decorating, must be removed together with the original paint cleaning, and then be bored with child. Not only increased the cost, but also caused the waste of resources and decorate cost ( The cost of materials and artificial cost) The increase. Get rid of waste is difficult to recycle, can cause pollution to the environment. Water resistant putty once and for all. After several years of twice or three times or more times renovation, don't have to shovel the putty layer. Surface polishing is local after repair, can be the next working procedure, time, protective walls. Usually a good waterproof putty can guarantee and metope of life.


high adhesion


standard JG/T298 - 2010 'building indoor use putty' clearly specifies the strength of the putty. Ordinary putty standard bond strength is greater than zero. 25 million mpa, strength there is no requirement for after flooding, and ask for a standard waterproof putty adhesive strength reaches 0. 50 million mpa, after flooding bond strength is greater than zero. 30 million mpa, can be seen from the standard, the strength of the waterproof putty is higher than ordinary interior wall putty, so use waterproof putty is not easy to generate empty drum and fall off.


the construction method of flexible putty 1. Process: first, clean base material, clean and smooth.


2. To join in container dry powder and water, stir to mix well with specialized tools, and let stand for 5 minutes, stirring once again. Putty powder water content is 30%.


feeding order: water before feeding.


putty coating: coating is with a trowel, scraper or putty knife blow be bored with child.


3, the main points of the blow be bored with child is solid, smooth, shiny. That is to say, be bored with child closely contact with the grass-roots, binding and firm, smooth surface smooth


4, scraping tool inclination, forcibly even, to ensure that the putty was full. In order to avoid be bored with child excessive shrinkage, crack, fall off, don't partial scraping too thick. According to the characteristics of different putty, thickness should be 0. 5 ~ 1. 0 mm


5. Rubbing putty: refers to the use abrasives grinding process on the surface of the object to be coated. Of coating finish, adhesion, edges and corners and line has great influence. In order to achieve the ideal effect of grinding, need according to the quality requirements of different process to choose the appropriate grinding method and tool. Grinding should be carried out at the grassroots level or be bored with child after drying, in order to prevent affecting adhering sand paper operations.


construction method of waterproof putty


1. The construction and try not to leave scratches. If there is a scratch, can use the tools convenient scrape.


2. Putty layer dry, after a 90% arrange polishing processing, both energy and not sticky sand paper.


3. On the surface of the grinding immediately after removal of ash layer, prevent secondary indoor dust pollution.


4. Manual grinding, polishing pad to wrap sand paper ( Cloth) Push back and forth, cushion, don't use only one or two fingers press the sandpaper, lest affect the grinding roughness. Mechanical polishing commonly used electric


grinding machine: the sand paper clip on the grinding machine, gently push on the base. It is forbidden to you push hard on the, so as not to overload and damage the motor.