Why misted plastic window inside

windows are becoming more popular year by year thanks to its m m nogochislennym positive qualities.They isolate room apartment from the street noise, well keep warm, do not require complex measures to care for them, have a presentable appearance and, in these times - affordable price.

However, like all elements of home, that of PVC window has its drawbacks, which include the appearance of moisture on the glass during temperature changes.Why misted plastic box inside and can I avoid it?This issue is of concern to many homeowners, in which double-glazed windows, as these manifestations give rise to mold around the frame displays, and they can then spread to the rest of the finish of the walls.

Causes of problems

as you know, the hot air in room rises , so it is often damp, and then fungus occur in the upper cornersframe.This occurs because the temperature differential warm air coming out of the flat and cold, penetrating from the outside.The most pronounced difference between is created in the upper part of the frame.With their "collision" occurs and the formation of condensation, but only when there is no ventilation elements that contribute to continuous weathering moisture.This display can be described as the formation of a "dew point", that is created temperature at which moisture in the air turns into condensate, which top flows down the glass. Incidentally, it can also actively formed in the bottom.

There is still a number causes contributing to the formation of condensation in the "dew point»:

• Sudden changes in atmospheric pressure, usually accompanied by an equally sharp changes of weather.It is clear that the influence of this man can not.
• Increased dampness in the room, for example, coming from the basement, especially in apartments located on the first floors of multistory buildings.
• Excess moisture resulting from the cooking or the long-term revenue steam - is mainly concerned kitchen facilities and bathrooms in private homes, which are often set small in size PVC windows.
• high temperature in rooms of the house, at very low outside.In such cases, glass windows can even be icing - freezing condensate in the bottom of the window.

• Sealed insulating glass unit is considered to be an undeniable dignity, but it also makes it impossible for material to "breathe", which is also a cause of fogging glasses.
• large number of pot plants can also cause the formation of condensation on the windows.The plants require regular watering, which gives certain amount of wet vapor, and they are not having output due to the tightness of the construction, are deposited on the glass windows.In addition, if the flowers set on the windowsill next to a dense, they cover the arrival warm air from the battery to the frame and the glass of the window, which also causes temperature differences and leads to the formation of condensate.

• presence of condensation on the window frames can be caused by the fact that too wide sill covers admission warm air from the battery to the window, pointing it in the directionroom.Under the rules of the heated air should be directed WWE p tm ol windows, creating a veil of heat, avoiding contact with the cold coming from the window into the room, and at the same time actively ventilating the surface of the window.

• Personal reasons such as repairs using mortars and adhesives, as well as drying linen in a flat in winter, too, are the causes of drop formation moisture on the plastic windows.
• Not to mention the mistakes that may have been made during installation works during installation frames.They very often are the cause of condensate.The most common installation defects include:

- glass blocks, made with deviations from the technology, which does not match the quality and performance, and is therefore unable to protect the house from cold, drafts and noise;

- selected for the installation of window components that do not conform to that design;

- poor quality seal with foam joints between the glazing and the wall;

- insufficient insulation of slopes from the street, causing the cold air penetrates into the joints between the wall and the frame;

- the use of substandard materials in the manufacture of insulating glass unit;

- the absence or faulty positioning of drainage holes in the frame.

• cause of condensation, icing and mildew stains both on the frame and around it may be a discrepancy of glass thickness climatic conditions of the region.When winter temperatures below 20 degrees are not suitable single-chamber windows - they are just in their characteristics are not able to protect the room from the cold in the winter frosts.Therefore, the low winter temperatures to save from the wind and freezing are triple-pane windows, and yourself PVC joinery (profiles, from which they are made) must have at least 5 cameras.

Video: main causes fogging of plastic windows

Troubleshooting

To solve the problem, depending on the owner of the apartment, and get rid of condensation, it is necessary to take some of the available measures.

normalization of temperature and humidity

Knowing the causes of condensation on glasses and frames of windows, you can start looking for a solution to this problem.This requires certain actions to reduce the humidity or increase the temperature in the room.Doing this can be largely rid of occurrence of such unpleasant symptoms.

To be aware of the level of relative humidity in the room, you need to get a hygrometer."Dewpoint" depends on the level of humidity and temperature outside and inside the premises. To have an idea of ​​what the temperature and humidity indicators lead to condensation, you can refer to the following table:

Room temperature	0	2.5	5	7.5	10	12.5	15	17.5	20	22.5	25
humidity level	temperature around the glass, which leads to the formation of "dew point"
20	-20	-18	-16	-14	-12	-10	-8	-5.5	-3.6	-1.5	-1
30	-15	-13	-11	-9	-6.5	-4.5	-2.5	-0.5	2	4	6
40	-12	-10	-7.5	-5	-3	0.5	1.5	3.8	6	8	10.5
50	-9	-7	-4.5	-2.5	0.1	2.5	4.5	7	9.5	11.5	14
60	-7	-4.5	-2	0.3	2.5	5	7.5	9.5	12	14.5	16.5
70	-4.5	-2.5	0	2.5	5	7	9.5	12	14.5	17	19
80	-3	-0.6	2	4.5	6.5	9	11.5	14	16.5	19	21.5
90	-1.5	1	3.5	6	8.5	11	13.5	16	18.5	21	23
100	0	2.5	5	7.5	10	12.5	15	17.5	20	22.5	25

manufacturers of PVC windows indicate in the corresponding operating instructions recommended by the temperatures at which condensation is kept to a minimum.Ideally, it should be at least 18 ÷ 20 degrees Celsius.The best way to maintain certain temperature, which will help preserve not only the window and the wall of the room from the mold, but also the health of the residents of apartment may be radiators or convectors with integrated thermostat.

And the easiest way out of this situation is the regular airing of the premises, which is to last for 10 ÷ 15 minutes twice a day.

But a more effective way to get rid of condensation on the windows is arranged in a plastic frame constant ventilation.

Ventilation PVC windows

To ensure proper ventilation of plastic windows, their manufacturers introduced several tools, of which should not refuse when choosing a model.

• « Comb", mounted on the frame, which will open the shutter at the right distance .

• Normal ventilator, provided a window structure.

• flap can open in two positions -. fully and ventilation, with the opening of opening 10 ÷ 15 cm
• comparative novelty in the window design - slitairing when the casement frame extends from just a few millimeters.

• Vent valve , able to regulate the inflow of air into the room.

• Self-adjusting ventilation, which provides ventilation as needed, using the channels in the profile chambers or special climatic valves.Valve - a plastic box, which set a special pen moving out of plastic.It monitors the incoming air in response to the intensity of the air flow.Thus, when the wind outside is amplified, pen independently covered, in its absence, the valve is open, so there is no room drafts.

Climate valve is installed in the upper frame section.If the area of ​​the window is large enough, then set set consisting of two valves.

qualitatively arranged ventilation solve most of the problems associated with the formation of condensation on the windows.

Setting ventilation valve

valve for ventilation PVC-box set quite simply , and the whole process does not take lot of time.Cpl CT cells Napa includes everything you need to install it.From tools need building knife and a screwdriver with a Phillips showerheads.

this element mounted on the top panel of the balcony door, or any opening window sash.Home - choose the correct size of the valve.

• first open the flap valve and is applied to the planned installation site, in order to mark the length of the rubber seal, which must be removed.Later, it will take place seal, bundled with a valve.
• Next, gently cut sealant.On the ground, it cut close to the left in the middle of the seal and the resulting gap in the slot where the gum was installed earlier, securing the special devices - plugs with screw holes.Through them, the valve is screwed in the door.
• Then flap valve is installed.It has a plane layer on the lower double-sided tape.It is necessary to remove the protective film and paste the body to the upper end of the leaf in the right place.Then, the screws are inserted and screwed into the previously installed plug into the eye holes.So provided reliable connection valve with sash windows.
• The kit must include two segments of the seal, are inserted into the grooves of the valve between the screws screwed
• finished with a flap, you can continue to work with the seal frame.On It also notes the length of gum that you want to cut.This part to be deleted, must be located exactly opposite the valve mounted on the wing.
• Instead remote seal installed new, from the kit.

This work has been completed.It is necessary to close the shutter and move the control valve in the right direction, in the closed position or the open.

Video: self-installation simple vent

This work may carry out any owner or owner apartments, as there is nothing complicated and heavy in this process there.

problem installing

In the event that after installation of the valve, and regular airing of condensate continues to be collected, and from the walls of the mold does not come, the reason should be sought in the general correctness of installation of the window or as the product itself.

to determine the cause in this case it is necessary to invite a specialist who will audit of glass and the quality of its installation.After testing, the master will be able to give a qualified opinion about whether you can rectify the situation by removing blemishes improper installation, or still have replace a new window.

Get rid of the condensation on the window would be easy, if the problem is in the lack of ventilation in the room.