How to lay a vapor barrier

During the construction work is essential to ensure high-quality vapor barrier that protects the supporting structures of the excess moisture.Otherwise, very soon within the walls, floor or ceiling will be a fungus or mold spots, which will eventually lead to the destruction of buildings.But before that, residents will have their own experience to feel the negative changes in the microclimate inside the room, can cause chronic discomfort and various diseases.For information on how to choose and to lay a vapor barrier, we describe in detail in this article.

Types of vapor barriers

Modern building materials market offers a wide range of vapor barriers, which have extended the operating time of the building and has retained a favorable microclimate inside.

himself installation process is quite simple and feasible even without the possession of skills.But before you start to work, you must choose the correct vapor barrier, which is applicable for your particular case.

There are three types of vapor barrier materials, depending on the type of installation:

• Okleechnaya;
• Paint;
• trowel.

Below, we discuss each of these in more detail.

Okleechnaya steam

Okleechnaya steam is carried out using a special protective film.

advantages of this type of vapor barrier is obvious:

• quick and easy installation;
• tight connection segments;
• small number of stitches;
• durability;
• good vapor barrier properties.

There are several types of back-lining vapor barrier, depending on the materials used:

1. Plastic film - is of varying density and length, sold in rolls.Film Cuts are attached to each other by means of a conventional adhesive tape or aluminum, and the base - nails or staples (staple gun).Stack film can be any party, leaving a small gap at the bottom and top for air circulation and providing a good stretch.If not leave gaps, it is possible that condensation will form.
   
2. Penofol - vapor barrier coating with a reflective layer.This is a special durable and flexible polyethylene foam with one foil side.It is actively used in the construction of frame houses made of galvanized profile.Also great for the construction of saunas and baths.Stack penofol quite simple, but the installation will depend on the rules of structural features.The material not only has excellent vapor barrier properties, but also considered a good insulator, reflecting the ultraviolet radiation and maintaining a comfortable temperature inside the house.Penofol floor used mainly for hot or very humid rooms - baths, showers, kitchens, bathrooms.
   
3. Polypropylene film - a material more durable than plastic sheeting.The best types of species with anti-condensation coating having a low water vapor permeability.They do not allow the condensate to reach the inner side and reliably protect the structure.Otherwise, condensation, so if you decide to use this material, make sure that it was an appropriate vapor barrier on the interior surface of such films.One side of this film differs rough surface.Lay a vapor barrier should be rough side out, so that condensate can evaporate quickly.But there are cases when the polypropylene film travel along two coats: smooth or rough side inside.
   

Paint steam

Paint steam is carried out by bituminous mastics (cold, asphalt, etc.), chlorinated rubber paints, polyvinyl chloride coatings.This type is suitable for the protection of non-insulated roofs and roofs constructed of corrugated steel.

to provide a vapor barrier paint first need to thoroughly clean the surface of any dirt, dry well and remove any irregularities with a special grout.Then apply an even layer of mastic, treating each square centimeter.

Paint steam is applicable not only to horizontal surfaces.To process the walls, chimneys or ventilation outlets, you must use a heated mastic.

Depending on the type of heat the mastic should be in varying degrees:

• bitumen - 180C;
• rubber-bitumen - 200C;
• tarry - 160C;
• gudrokamovaya - 70C.

Trowel steam

Trowel vapor barrier is a coating surfaces of cement-sand mortar, made out of cement 50. The sealing of joints is carried out with special solutions, such as UT-31.

After grouting solution stained with paint or wall is covered with cement.This type of vapor barrier is mainly used for walls.

which side lay

Many inexperienced builders often poorly performed work, because they do not know which way to lay a vapor barrier.The result is the use of any such work, and the money spent in vain.

basic rules of insulation installation:

1. If you are using double-sided tape, where one side is smooth and the other rough, Always put the material into a smooth surface, ie on the heater.The rough side to be in contact with moisture, and allow it to evaporate freely.If you do the opposite, glossy layer will not receive pairs and accumulate it in the form of condensate.Its mission is to protect the insulation material without skipping lessons rough side pairs.
2. If you are working with a polypropylene film with one-sided glossy (laminated) layer, it is necessary to lay a vapor barrier inside the smooth side and wicker - out.
3. when working with foil films must remember that a layer of foil is designed to reflect ultraviolet radiation.Obeying the logic, we can conclude that it is necessary to lay a vapor barrier foil outside.

The above principles apply to virtually all cases, however, the modern vapor barrier materials manufacturers can still make their own adjustments, so always read the instructions on the packaging.A striking example - Izospan vapor barrier film, which the manufacturer recommends to lay it inside the rough side, and glossy - out.

Installing a vapor barrier

Knowing how to properly lay a vapor barrier to avoid the formation of mold and mildew.Depending on what part of the house you are running, the installation materials will be different.Consider the most popular options for laying a vapor barrier in the living room.

Vapor barrier roof

need to know some nuances to the competent unit of the roof vapor barrier.Thus, the material should be rolled coils from the top down, slightly down with each successive layer to the previous overlapped 3-5 cm.

To connect individual parts of the coating uses a special tape that provides seam tightness.Most often used durable aluminum adhesive tape or rubberized adhesive tape.

the case of non-insulated roof vapor barrier, the film should be placed in a horizontal position and secured to the crate or dosochnomu flooring.

Vapor ceiling

To prepare the ceiling to the mounting of a vapor barrier, much time would be required.You need only to sweep the surface, gathering dust with a damp cloth and let it dry completely.Then you need to cover and wipe all the bumps and notches, if any, to align the ceiling primed and wait until dry.

insulation film needs to stretch, so that no irregularities, which could accumulate condensate.To provide such a stretch ceiling, attach the material to the ceiling joists in the usual transparent tape.Cuts film also need to be laid overlapping and prokleivat joint tape.According seam every 30 cm nail nails with wide hats.

ceiling vapor barrier is attached separately or simultaneously with a heater using a wooden or metal rods.Reiki should be screwed with the same frequency that the nails were driven - 30 cm. Very helpful in this work will be furniture stapler - will replace the bracket nails with large caps and ensure a secure fit.

In the hardware store you could offer sheet vapor barrier for ceiling.To attach it, you will also need a special profile, which you can buy or make your own hands.In such a situation it is necessary to first attach to the ceiling frame and then insert the sheet vapor barrier and insulation.The sheets are placed overlapping on the same wall, to prevent the cracks formed in the places of connections of walls with beamed ceilings.

In some cases, if the ceiling covering the right, carrying a vapor barrier lacquer allowed.The material is applied in several layers, each of which must be dried before applying the next.Usually enough 2-3 layers of vapor barrier.

Vapor wall

Lay a vapor barrier on the wall shows rolling rolls from the bottom up, and fixing the horizontal portion of the material or wooden slats galvanized profile.It is necessary to leave the vent for air circulation.It is usually done between the vapor barrier and interior trim at a distance of about 4 cm. This condition must be observed in all areas, especially where heating is not constant, frequent high humidity.

lower part of the vapor barrier material should be placed below the base level of the house, so that the water could not seep into the walls.

Vapor floor

Before you lay a vapor barrier on the floor, you should carefully handle all the wooden elements of the base: bars, joists and planks.Processing is carried antiseptics that protect the wood from rotting and damage by parasites.

If you want to install the vapor barrier already built on the floor, you should take it apart, removing the floor finishing and removing the old steam and heat-insulating materials that have become unusable.This is followed by a good scrub all, and in any case to handle the wooden sub-floor segments antiseptic.Then fit the new heating and steam.

For more information about how to lay a vapor barrier on the floor and the wall, see the video below:

Hopefully this article will help you to strengthen the vapor barrier and to deal with any of its species.In any case, do not forget to read the instructions from the manufacturer on the packaging in order to avoid the rare but possible exceptions by way of installation.