Build Daily

Building Materials

August 12, 2017 18:08

Application of foam - a cheat sheet for builders

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How useful and what is afraid of foam?

Anyone versed in the construction of a person knows about the importance of high-quality sealing of inter-panel joints, cavities, joints and so on.Polyurethane Sealant is the best suited for this purpose, because it has good heat and sound insulating properties, moisture resistance, resistance to temperature changes.This product is convenient and easy to operate.

Polyurethane foam for sealing joints is indispensable, because it penetrates into the most inaccessible places, and does not require the additional devices or power sources.The main advantages of aerosol sealant is the high sealing, insulating and mounting characteristics.For example, polyurethane foam for windows fills the space between the frame and the window opening, the quality of the seal will depend on the further operation of the window.

can use it to work with almost any building materials: wood, concrete, PVC, glass, brick, and so on.It interacts not only with polyethylene, Teflon, silicone and polypropylene.

The disadvantage is the polyurethane reaction to ultraviolet light, the sealant does not tolerate direct sunlight.If using foam for plastic windows, for example, that after drying it is necessary to cut excess foam and carefully handle the surface putty, plaster, paint and so on.

Applying foam

Working with assembly foam require protective clothing and good ventilation of the room, as the pair released during drying, irritating the mucous membrane.Using a special gun allows you to repeatedly reduce the consumption of foam.

as sealant polyurethane foam commonly used for the installation of door frames, balcony blocks and other structures, to fill the voids, cracks, for fixing insulation materials.It is also widely used to prevent rattling in ventilation systems.Recently, the foam is widely used as insulating material.

option of using foam a lot, but you need to know how to work with it.Although there is a special kind of winter, to work with polyurethane sealant preferably in warm weather, when the temperature and +30 ° C.This is the optimal conditions for its fast and high-quality polymerization.All work with its use should be carried out with gloves, as well as good ventilation.

proper expenditure of foam

Before starting work, the cylinder must be carefully shaken for a minute.To avoid overspending of the material is necessary to examine the object.The greatest effect when sealing give caulking size of 1 cm to 8 cm. If the gap is much greater, it should be reduced by using a cheaper material.

If using foam for the doors, the foaming must be made from the bottom up, to more liquid mass on something kept. Zapenivat clearances must be one-third of their depth, because during solidification structure increases its volume in two or three times.

To accelerate hardening it can spray water because the polymerization takes place under the influence of moisture.After solidification of the composition much speaking "hood" is cut, but it should be desirable something to protect the cut.If it remains unclear how using foam, video will clarify various technical nuances.

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