Foams and construction sealants for various works – examples and application

DATE: Apr, 4   COMMENTS: 0   AUTHOR: Allan Azarola

What are foams and sealants? Beyond doubt they are products without which it is difficult to imagine the repair or construction of any building. First of all, their application is very broad and diversified, so the knowledge associated with their selection is of utmost importance. The products of this type have various properties; therefore, we have tried to get you familiar with their application options

The application of foams and sealants

The main application range of foams and sealants is repair-construction works. It is hard to imagine the fastening of doors or windows, thermal insulation or installations of various types without the use of foams and sealants. In every building in which central-heating, water & sewage or electric systems are installed, there are many seal demanding sites and areas. The selection of proper products of this type, plus necessary accessories is a very important issue. Both the accessories and foams and sealants for various construction works can be found at the rawlplug.com website.

Types of foams and sealants

This category includes such products as polyurethane foams, sealants and silicones. To become more specific, it should be necessary to separate foams and sealants. In the case of foams, we have one- or two-component products.

Among common foam types we find:

  • pistol foams,
  • hose foams,
  • polyurethane glues and mortars,
  • fire retardant foams.

The selection depends mainly on their intended use and on the way they are going to be applied. One-component, low pressure foams are characterised by good adhesive properties and high mechanical strength. However, the rather long hardening time is their weak point. Two-component foams get hard much quicker but are more permeable.

Sealants can be divided into:

  • silicones,
  • roof sealants,
  • acrylics,
  • sealing glues.

It has to be pointed out that the name “silicones” includes products of very different intended uses, including sanitary, construction, glazing, high temperature and universal silicones. In addition, silicones can be used in indoor and outdoor applications in a building. Acrylic sealants should definitely be used in indoor premises.

When are foams and sealants used?

Products of this type are used in the final stages of construction projects, i.e. during finishing works. Silicones and glues of this type are useful in finishing such areas as bathrooms and kitchens, where humidity levels are high. The products can be used in the assembly of bathroom appliances, e.g. washbasins. What is interesting is that foams may also be used for filling and soundproofing partition walls, as well as for acoustic insulation of attics and roofs. One of the foam applications is the thermal insulation of door frames and shutters. The use of one-component foam is determined by appropriate environmental conditions, that is air humidity must be at least 35%.

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