necessity of attic insulation to provide a comfortable atmosphere in the house in winter is unlikely anyone will dispute.But the reason for the ventilation in order to maintain the constancy of temperature, many forget.Meanwhile, proper ventilation of the attic not only supports the constancy of climate, but also helps to increase the life of the roof, preventing the emergence of pockets of mold and mildew.Properly thought-out ventilation is just as important as good insulation.
- What is required ventilation of the attic?
- How to ventilation in the attic?
- cold attic ventilation
- warm attic ventilation
- attic ventilation in the house: Myths and Facts
- Important advice of professionals
- Ventilation roof space: video
What is required attic ventilation?
Ventilation - important stage of the design, which allows to adjust the heat.In summer, the roof is heated to 160 degrees, and hot air enters the house.But this is not t
ventilation system is aimed at blending ambient temperature and prevents the roof and during snow melt ice, huge icicles and descent "avalanche."As you can see, the issue of resettlement of reliable ventilation system is really important.
How to ventilation in the attic?
Attic can be cold and warm.The first option - the traditional.In this case, truss system are not protected, because only insulated ceiling.The second - an echo of the Soviet period, has one goal - protection utilities.
cold attic ventilation
cold attic ventilation should be adjustable.To do this, you must not close lathing and rafters.Alternatively, can act Rooms' with gaps, provides unimpeded air circulation.If the roof is laid ondulin or slate (in the absence of wind and vapor barrier films), you should not worry - the air easily penetrates between the waves of the roof into the attic and out.
This is important!
Metal and ventilated, but may form the condensate, which means that the flooring of the film becomes mandatory.
If gable roof, the ventilation ducts of a pediment.Pretty effective solution - loosely fitting Rooms' wooden eaves.Uniform distribution of narrow slits contributes to effective ventilation of all the attic.
However, if the contiguity and Rooms' fit tightly or gables are made of stone, it is necessary to make holes in the walls.They should be on opposite sides, which will help eliminate stagnant pockets.
This is important!
total area of air ducts is calculated on the basis of 0.2% of the total floor area.
There is also a more economical option - setting the standard ventilation grilles.A grid should be regulated, and the other - turn down the hole.From insects to protect a mosquito net.
for gambrel roof ventilation arrangement will be a different scenario.The inlet is at the bottom (in a binder), and the output from the top, at the ridge.If filing overhangs made of wood, the boards can be positioned not entirely tight, with an interval of several millimeters.When sewing with the help of plastic individual components must have holes.These panels are called spotlights.
And what if the filing has already been collected and assembled tightly?Because of this situation, too, there is a way - the release of gratings with mesh diameter of 5 cm. Arrange them usually wind overhang length in increments of 80 cm. For making holes need to drill with a round drill.The upper output is performed on.Note that a lot will depend on the type of roof.
for flexible roof mounted valve (turtle) or ventilated skate.For slate and evroshifer - classic skate.For ceramic tiles - special valve.Metal roofing is allowed to air via a standard skate.It is worth noting that the horse - not only financially advantageous replacement valve, but also the possibility to equip the ventilation system in the shortest possible time.
some practice installation of skylights (can be glazed, and you can put them lattice), but this task is complex to implement and requires theoretical and practical training.
warm attic ventilation
natural circulation in the heating systems of today is not widely applied.This means that when planning a loft conversion in residential attic should be made fully ventilated roof.For sheet metal and shingles need to build a ventilated area - counter-sew on the rafters.For metal roofs are preferable windproof film.For counter-slate roofs are optional, because the air must pass freely from the bottom to the top.Login to make filing and exit - through the horse.
ventilated attic will be exactly the same as the other rooms.Air enters through the windows (not install valves VTK), goes through the vents.If the walls are not, then on the roof (in place of the hood) mounted aerators (fungi).
attic ventilation in the house: Myths and Facts
problem of ventilation of the attic space has spawned many myths.So what are the facts you need to know to ensure a full airing?
Myth №1.After a winter of vents warm air out the room .It is widely believed that the ventilation in winter prevents heating.However, it is unlikely that it is in the presence of holes.If the house for a long time warming up and cooling down quickly, the problem in isolation, rather than in the ventilation.It should be noted that poor quality insulation always passes the humid air into the attic, which creates favorable conditions for occurrence of condensation and subsequent rotting of wooden floors.
Myth №2.Ventilation is necessary only in the hot season .Many are convinced that the ventilation system is only required to provide ventilation of the building in the summer.In fact this is not true.Inadequate ventilation in the winter - the cause of the growth of icicles, the appearance of mold and mildew.
Myth №3.The area of the vents does not matter .Again, confusing.Relying on the off chance, having channels on the eye, of course, not worth it.The efficiency of this ventilation is zero.The air holes are arranged in a ratio of 1: 500 (wherein for each 500 m2 1 m2 have ventilation).
Important advice of professionals
- ventilation system must be robust and able to withstand any weather conditions;
- special attention should be paid to the holes on the ridge of the roof.By tradition, they should be to the ridge as close as possible;
- can be installed under eaves continuous spotlights.They must be equipped with a fine mesh screening.The holes should be of plastic or aluminum, which eliminates the occurrence of corrosion;
- one of the conditions for effective ventilation - installation of air holes in the attic (between rafters).Holes must equip thus to prevent freezing or clogging of the air;
- choose a place to air-supply plant carefully.This must be the cleanest area in the attic;
- put on the outside of the roof ventilator, which will draw air.The distance between the air supply system and the fans must be at least 8 meters;
- not forget about installing the heat exchanger, for heating and cooling;
- dormer windows are not only of practical use, but also are able to give structure a unique look;
- Provide ventilation pipe grids or diffusers.
Now you know not only how to arrange ventilation of their own hands, and how to do it right and avoid the most common mistakes.And the most important thing!
Ventilation roof space: video