Insulating materials

Question 1

In order to reduce heat transmission in hollow spaces
such as those partitions between an exterior wall and
an internal lining, in a floor or in a roof, they are frequently
filled with materials which are of a loose
fibrous nature and have a low conductivity.
Many substances have been used for this purpose,
including
Combustible and non combustible

Answer 1

COMBUSTIBLE
Cork
Saw dust
Peat

NON Combustible
Rock wool
Polystyrene
vermiculite

Question 2

describe Spray-on insulation

Answer 2

Since the advent of sprayed asbestos, whilst this
material is generally no longer used, new technology
has developed a wide range of spray-on products
like vermiculite-cement and sprayed mineral
fibre, some of which are designed to withstand
high intensity fires which might be experienced,
for example, in the petro-chemical industr

Question 3

describe and

intumescent seals

Answer 3

Intumescent strip seals and acrylic mastic have
been developed to provide protection and maintain
fire resistance in gaps and joints which are flexible
enough for structural movement. These various
types of internal and external insulation material
not only help a building to reduce heat transmission
or protect it in the event of f

Question 4

where might you find polystyrene insulation

Answer 4

between inner and outer wall