Definitions for cavity wall insulation
cav·i·ty wall in·su·la·tion

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1. cavity wall insulation

   A cavity wall is a type of wall that has a hollow center. They can be described as consisting of two "skins" separated by a hollow space (cavity). The skins typically are masonry, such as brick or cinder block. Masonry is an absorbent material that can slowly draw rainwater or even humidity into the wall. One function of the cavity is to drain water through weep holes at the base of the wall system or above windows. The weep holes allow wind to create an air stream through the cavity that exports evaporated water from the cavity to the outside. Usually, weep holes are created by separating several vertical joints approximately two meters apart at the base of each story. Weep holes are also placed above windows to prevent dry rot of wooden window frames. A cavity wall with masonry as both inner and outer skins is more commonly referred to as a double wythe masonry wall.

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1. Cavity wall insulation

   Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with material that inhibits heat transfer. This immobilises the air within the cavity, preventing convection, and can substantially reduce space heating costs. During construction of new buildings, cavities are often filled with glass fibre wool or rock wool panels placed between the two leaves of the wall, but many other building insulation materials offer various advantages and many others are also widely used. For existing buildings that were not built with insulated cavities, a fibrous material such as cellulose insulation or glass wool is blown into the cavity through suitably drilled holes until it fills the entire wall space. Foam can also be used for this purpose. Although some foams used in the past, such as urea-formaldehyde, are no longer used, others, such as polyurethane, have taken their place. Cavity wall insulation also helps to prevent convection and can keep a house warm by making sure that less heat is lost through walls; this can also thus be a more cost-efficient way of heating one's house.

How to pronounce cavity wall insulation?

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How to say cavity wall insulation in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of cavity wall insulation in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of cavity wall insulation in Pythagorean Numerology is: 1

Examples of cavity wall insulation in a Sentence

1. Ed Matthew:

   There are different kinds of insulation measures, cavity wall insulation, loft insulation and draft-proofing are very cost-effective, while solid wall installation is much more complex and expensive.

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Cavity_Wall_Insulation
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=cavity wall insulation