roof protects the house from rain.But how do you protect the roof?The first thing that comes to mind is the topcoat.But its function is a little different because of the fact that through the roofing material can still penetrate the moisture.In this way the moisture barrier and, in fact, the only defender of the roof from getting wet, and the harmful effects of water is waterproofing.
- necessary waterproofing cold
- roofing materials roofing waterproofing
- Obmazochnaya insulation
- Ruberoid Glassine
- membranes and films
- Waterproofing cold roof with his hands
necessary waterproofing cold roof
main task is to protect the roofing of buildings against wind load and rainfall.If mandatory under the roof of the attic should be insulated with three layers (insulation, vapor barrier and waterproofing), then under the roof covering unheated attic may not be anything.However, in practice, on the other hand is mounted is still a laye
If water sources are just outside, then you could basically do without waterproofing cold roof, while hoping that the quality of the roof will ensure the absence of blowing snow, rain and any leaks at 100%.With proper installation of certain types of roofs this is the case.
But the problem lies not in the sediments and their condensate, that is - the drops falling from the inside of roofing.The likelihood that there will be condensate increases if, for example, will be held engineering equipment through the attic.It may be a pipe fireplaces, chimneys, as well as the various elements of the heating and hot water system.
Whichever insulation or would be effective, always takes the heat, so there is a significant difference in the attic temperature.Depending on varying temperatures in the air formed a different amount of moisture and when warmer air is transferred to the roof, then it comes to a point "dew point", and it gives rise to a condensate.
Therefore, it does not doubt the need for waterproofing cold roof of metal, which makes it possible to facilitate the conversion of the attic to the living attic, if you will have this desire.So do not neglect the roof waterproofing, protects podkrovlennoe space from condensing and atmospheric moisture.
Basically, in cold attics for waterproofing roofing materials can be used any type, anti-condensation film diffusion membrane and ordinary film.The owners are choosing more often anti-condensation film, they are cheaper than the diffusion membrane.Their advantage over conventional films is that they have on the inner side of nappy layer, by which they can hold for a certain time condensate until conditions alter evaporation.
In Cold roof waterproofing membrane is installed under the profile sheets at a distance of 5 centimeters (for this purpose to make additional construction).With this on the inside and outside of the sheets will flatten temperature.Properly installed insulation system for a cold roof will not benefit in terms of lower reliability of the design than the roofing itself.
materials for waterproofing roofs
for a variety of roofs are used as waterproofing of different materials ranging from common roofing material in rolls and a variety of pastes, to superdiffuzionnye membrane.How to buy the material depends on the roof of cake and operating conditions.First of all, you must define a cake roofing and waterproofing material choice for a cold roof will happen by itself.
mastics used as an independent kind of waterproofing for flat roofs and liquid.But usually used as an auxiliary insulation obmazochnuyu event.Namely, in order to repair a variety of roll roofing, embedding has shifted joints and cracks of the web material, sealing skylights, pipes findings, additional insulation of the ridge, valleys, the end parts and pasting tiles bitumen.
for device roofing mastic must be cleaned thoroughly base from loose parts, dust, dirt.It is also recommended to impregnate the base further cleaning agents or bitumen primer.But mastic can not be used when the device is tilted roofs as an independent waterproofing.
very common and popular material for the device cold roof, as relatively expensive.It is used for roofs with an inclination angle of 0 to 25%.Still, he rapidly loses his fans.The fact that the low durability of roofing material, and after a while all his faults occur: bituminous material is destroyed by UV, rotting cardboard base, violated the integrity begin leaking.In addition, it is based solely combustible materials.
its new analogue with some elimination of defects is evroruberoid in rot-based material (polyester, glass fabric), which is covered with a special modifiable bitumen composition.Such evroruberoid has greater durability and therefore a higher price than its predecessor, but it is flammable and environmentally unfriendly.It follows that the use for roofing evroruberoida in small areas often is not profitable.But if it is flat roof, this embodiment is suitable.
was once quite popular roofing waterproofing that was used during installation cold roof.In place of it, he came to roofing, but also lost its popularity.The reason for this is the rapid aging, low strength, loss of thermal insulation performance, environmentally unfriendly.This option is the least expensive insulation, but at the same time short-lived.It follows that the asphalt can be used only for temporary protection roofing.
membranes and films
For waterproofing membranes and films include polypropylene or PVC.Such materials for several reasons are gaining popularity: high levels of waterproofing, high strength base, vapor permeability, durability (about 50 years).
Separate the membrane into the following types: diffusion, psevdodiffuzionnye, superdiffusion and anti-condensation.Each species has its own particular use and purpose.Well price membranes, unlike other waterproofing materials is quite high.And their cost is often proportional to the characteristics of the particular material.
Psevdodiffuzionnye membrane is a film with a rather low water vapor permeability - up to 300 g / m2 / 24 h. This film can be used to protect the thermal insulation of corrugated board.Constraints in this case, it is not adapting.If it is used in the cake roof insulation, it is necessary to make a ventilation gap between the insulation and the film.To further its devices should be made crate.Because of this, the cost of such isolation may increase and reach an amount equal to the normal diffusion membrane.
superdiffuzionnaya and diffusion membranes called a perforated film with high (greater than 1000 g / m2 / 24 h) and average (equal 400-1000g / m2 / 24 h) performance vapor permeability.For the waterproofing of the roof, this cold vapor permeability is sufficient.Ventilation gap in the case of this film is not required.Such membranes are many advantages: you can install directly on the heater;It outputs the steam inside and simultaneously transmits moisture inside;a heater for the windscreen, in this roof space retains heat;in a dusty environment does not lose performance.
However, the material forms on the upper surface of the derivation of steam condensation under the roof so it can not be used due to the fact that can corrode.If the finish of the coating metal (zinc, steel, aluminum, copper) apply bulk diffuse membrane.The layer that is in contact with the roofing material, advocates a kind of separator, which absorbs and removes condensate from these metal roofing.
anticondensate membranes are also used for standing seam roofs and metallocherepichnoy.Nappy "carpet" is on one side of the film.This side of her turned out to topcoat, as shown in the video of the cold roof of metal.It is necessary to arrange for insulation ventilation gap, since such protection vapor permeability approaches zero.
Waterproofing cold roof with his hands
Waterproofing is right friendly environment should be like a layer cake that needs to build support.Its composition depends on the type of substrate.Under the thermal insulation layer is as follows.Lay the frame on the truss of kontrobreshetki and crates.In the crate fit gidroizolitsionny material and pressed kontrobreshetkoy.
For kontrobreshetki best material is impregnated with flame retardant solution or antiseptic rake width of 4-5 cm and a thickness of 2-3 cm.It is necessary to lay boards lathing horizontally and vertically - kontrobreshetki board.This should be formed between the rails kontrobreshetki channels that have a height of 2-3 cm.They are necessary for ventilation of the roof.Maintain a distance between the rails to the entire area of the channel is equal to 1/100 of roof area.
from moisture vapor can be removed by ventilation.With an area of the roof of one hundred square meters of total area of ventilation ducts should be one square meter.Up to the roof ridge vents must be held to through holes in the top of the roof out a pair of free moisture.
Procedure Cold roof waterproofing design next.Lay overlapping waterproof film along the roof cornice successive rows.Lay the material horizontally while moving from the eaves to the ridge.The degree of slope of the roof depends on the width of the lap, which is in the range of 10-20 centimeters.
film was fixed with galvanized nails with a wide hat a staple of the construction stapler.Scotch glued place where the film is joined to get the full sealing attic leaks.In the same way the next stacked layers of waterproofing film.Independently determine their number.
between the rafters sagging of the film should be about twenty millimeters.Between the insulation and the film must remain in the air pocket 40 millimeters.In order to provide ventilation of roof space should be done on the ridge ridged produhi, ie the gap between the axis of the ridge and the edge of the film.The required offset distance is 50 millimeters.
In areas where pipes are installed, antennas and other communications, waterproof film is attached to the closely spaced bars sheathing, pre-cut it.Use the construction stapler or double sided tape.When the roof windows decorate film should always be guided by a special instruction from the manufacturer of the material.On top of the film with an interval between the bars of 10-15 centimeters nailed kontrobreshetka.
Thus, when properly installed waterproofing will last the life of the overall insulation, roofing, and, of course, the entire roof.It is therefore necessary to treat responsibly to the choice of the protective material from moisture and strictly follow the installation of waterproofing technology.