The mechanism of formation of cracks and damage wood when working with wood professionals are often faced with the problem of cracking and swelling, and darkening of the ends of wooden buildings. Cracking exposed wood as hardwood and softwood. And the very ends usushechnoe cracking occurs due to different rates of evaporation of moisture through the side and end surfaces. It is difficult to imagine, but through the ends Wood gives moisture to 10 times faster than through the lateral surface. At the same time when wet wood end absorbs moisture and is 10 times faster. Thus, the end of the crack are a consequence of high hydraulic conductivity wood along the grain, and the process of decay begins with the end zones and high on a log.
But we must not forget that wood is exposed to harmful factors at the time of logging. Unprotected wood becomes an easy prey to all kinds of pests such as beetle-grinder and house-fungus, and the presence of moisture in it makes the situation worse by accelerating the processes of destruction. High humidity not only promotes the development of , but also leads ability of wood to deformation and reduction of its strength and grade. On defense, need not only timber and timber. Danger lurks and is already finished houses. Among the elements of a wooden house, the ends of which require treatment with protective agents include: windows, doors, roof eaves, the ends of log and timber, all other end surface facing the outside.
To date, suspended ceilings in our homes are not uncommon. Initially, they were often intended for office space. But today, in connection with the fleeting modern trends, suspended ceilings rapidly came into use in our everyday lives. And now, very often we can see this already an integral part of modern design in many homes and apartments. Stretch ceiling is quite widespread in connection with certain advantages. Thus, in comparison with the conventional finishing the ceiling, stretch ceilings have observed: the ability to implement any design solutions, high-speed installation, reduce labor costs, providing protecting buildings from leaks from the top, the aesthetic properties.
One of the main "pros" choose stretch ceiling is its practicality. These ceilings do not require special care, they are easy to use. Thanks water resistance, stretch ceilings are a reliable barrier to water penetration. Strength and flexibility, stretch ceiling allows them to withstand heavy loads (up to 100kg per 1m2). A time of installation of a ceiling high of the room average size is only a few hours. For a simple layman important also the fact that the funds invested in innovation, were acquitted.
So how long are suspended ceilings? Their life almost unlimited in time. This kind of ceiling cover is ideal for those who welcome a healthy lifestyle. Stretch ceilings do not emit harmful to human health and environmental elements that do not have smell, they are dust-tight. These ceilings are anti-allergenic. Stretch ceilings are safe, easy to wash, do not paint, they are durable. Selecting them, you thereby providing for themselves and their loved ones comfort, reliability, quality and aesthetic pleasure. You can give free rein to your imagination and come up with design of the ceiling due to different effects: waves, sky, Arch. You can even put pictures, thereby making the ceiling and the exclusive unique. On beauty and style suspended ceilings can easily bypass the other species. Stretch ceiling today – it's available, conveniently and beautifully. The choice is yours.
When laying pipe heating and hot water (DHW) to replace steel pipes are increasingly coming to the pu insulated pipes (pipes PUF), possessing over traditional steel pipes many advantages. Firstly, why, and began in his time developing pur insulation – hot-polyurethane, which are covered with polyurethane foam tubes, 2 times lower thermal conductivity of mineral wool, which is heat-insulated steel pipe when laying traditional steel pipe in a concrete channel. The thermal conductivity of mineral wool about 0,04 W / m , the thermal conductivity ppu 0.02 W / m . What does this mean? This suggests that if the thickness puf insulation in the pipes to do the same thickness as the thickness of mineral wool, such a pipe would save the energy used to heat the water passing through the pipeline, 2 times longer than traditional tubes. Across state is very big money.
Or, if the thickness of the pipe ppu to do 2 times thinner, then at the same insulation outer diameter of the pipe can be made much smaller. Correspondingly less need to choose the soil for trenching, and consequently – less and cost of the work of laying the pipeline, if this applied polyurethane foam tubes. But this is not important. The main thing is that due to higher heat resistance of new insulation fpu pipe can reduce heat loss in the passing on him of the liquid from 25-30% to 3-5%, equivalent to a decrease in fuel burn or electricity needed for heating in the amount of hundreds of millions of rubles. Following positive moment of such a pipeline – you can lay open (ductless) way. Pipes of steel pipes, insulated with mineral wool, must be laid in concrete channels, which protect the pipe and insulation from the external environment (mainly water, with both high and low ph, the electromagnetic fields in conducting layers of soil, etc.). The creation of such a concrete channel to spend a lot of material and physical resources. The pipeline is made of pipes prp in such concrete channel is not needed.
Polyurethane foam insulation, located between the steel tube and a protective sheath made of polyethylene or metal, very tight as a tube, and to containment. Therefore, access of various substances, are always located in the ground (including dissolved) to the pipe and insulation is extremely difficult. Also in the pipes ppu held control wires, allowing remotely determine the starting point of metal corrosion or damage to the insulation. Term viability of foam big enough, theoretically, about 50 years. The real pipe prp has not been in the ground in During this period of time (as were used recently), so virtually confirm this date there is no way. However, the pipe that had lain in the earth about 15 years old and raised from the trenches determination to continue to perform their functions, have shown that the quality of foam remained virtually unchanged since their inception in the ground. This is another advantage of pipes prp compared with the steel – increasing the life of 2 times (so far only in theory, with a high probability of practical confirmation in the future).