Build Daily

Building Materials

August 12, 2017 18:08

Solid foam - what is the difference from other species ?

Definition and advantages of rigid foam

Durable foam obtained by the forging method is resistant to microorganisms and is not destroyed by rodents, it is easy to work with carpentry tools, thermal well bent and stamped his sheets perfectly glued, as with other materialsand between themselves.Besides

selected mechanical properties, rigid foam characterized by high heat resistance and can be used at temperatures ranging from -60 to +80 degrees Celsius.Its unique thermal insulation properties: 20-mm layer of rigid foam in its thermal resistance equivalent to the masonry thickness of 860 mm or a layer of wood thickness of 150 millimeters.

foam has a high density close to zero capillarity, causing its ability to very low moisture absorption, and being in a moist environment, it is much less prone to deformation than the foam, not treated pressing method.

Thanks to its low bulk density and a system of closed pores, this material has good buoyancy.The densest foam when placed in water does not lose this ability for a number of years and has a significant advantage over cork.

relatively high and the sound absorption coefficient of a solid foam.In order to improve the sound insulation properties of its units are perforated.It should also be noted that the chemical resistance of the material.It is resistant to mineral acids, as well as strong and weak alkalis.

Disadvantages of high-density foam

However, this foam is not free and from shortcomings.For several years, the debate continues on the toxicity polystyrene foams, in connection with which we can recommend to buy them only in the presence of sanitary certificates, the residual styrene content should not be higher than 0.1%.

And finally, the main problem - the high combustibility as polystyrene products are easily ignited by a spark or flame.The introduction of special additives solved the problem only partially, eliminating the possibility of fire from the sparks, but not prevented the burning of a fire.Therefore, any kind of foams is recommended only for outdoor use.

use of a solid foam

Thanks to its remarkable properties, dense foam has long been used in various sectors of the economy and technology: in aircraft and shipbuilding, commercial fishing, and the chemical industry, in radio and electrical engineering.And, of course, as an excellent thermal insulation material, it is indispensable in the construction.

rigid foam is easily processed and glued.Through this it is possible to obtain from the blocks of different sizes and shapes, which are then planed, milling, sawn and drilled as needed.To do this, use a variety of tools, which are not always available for home use.

On board cut to his band saw joinery machines.Trim edges, Milling and planing produced on Thicknesser, Planer, planer, circular and milling machines.For drilling using vertical and horizontal boring machines with mechanical and manual submission.

With bonding and mechanical treatment, reinforced foam, which is a combination of hard foam and reinforcing material: sheet metal, plywood, metal mesh or rods.Strength and thermal insulation properties allow the use of foam for the construction of a maintained roof that allows to build a rooftop cafe or, say, a car park.