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Strike Bowling

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Published on: 26 Jul 2016 by bhqonline

Raviv Dozetas: The Internals Porch

Description

The porch is constructed of a brick base of
approximately a meter in height, and  upvc windows around this rectangular brick
base, with a pitched slate roof.one radiator that is fed off the gas central
heating system is located inside thisconservatory. The door isa upvc unit.

Recommendation

A test hole is to be inserted in the roof
to determine whether or not a layer of insulation was laid during the
construction of the conservatory.

If none is found.A small loft hatch will
need to be created in the ceiling of the conservatory toaccess the apex space and
a layer of 300mm Mineral wool is to be evenly spread throughout the floor plate
of the roof.

Desired
result

This will limit heat loss from the conservatory,
it will further create a cushion of warm air inside the conservatory to repel
any loss of warm air from the inner home into the conservatory. Also the
conservatory will act as a ‘decompression chamber’ between the warm home and
the colder outside temperatures.

Entrance
hall

Description

The entrance has a wet patch on left hand
side on entry, this is creating a cold bridge, from the penetrating moisture,
and from a thermal view point will be cooling the house.

Recommendation

The source of the water ingress here is
lack of sufficient drainage, and capillary rising action of the water.

Stop water ingress by creating sufficient
drainage outside and re pointing with chemical treated cement or silicone
system to water proof and block rising action.

Internal
walls

18-25 % of heat loss can occur through
walls, the current construction of the walls will allow this range of heat loss,
and a fabric first approach to this retro fit will require some form of
insulation.

Two types of wall insulation are
recommended here.

Internal
insulation

This process involves installing insulation
on the inside of the property, generally the profile consists of 2-5 inches of
a mineral wool and or foam boards that are covered with a decretive finish that
can be plastered or papered to match the inside of the house.

Advantages
of internal insulation

Cheaper than external insulation

Easier and cheaper to install –can be
installed one wall at a time

 

Disadvantages

Intelligent vapour control layer should be installed,
to tackle the loss of breathability of building fabric

A single nail driven by residents can
disturb the system.

External
insulation

 

This process involves attaching the
insulation materials to the outside of the home, encasing and enveloping heat
inside, generally the insulation material is attached to the outside brick or
masonry face, the foam insulation board is then covered over, however in this
scenario a host of external finishes are available from custom brick finishes
to rain screens, thus potentially making this a perfect choice to compliment
the environmental protection policy an example of this would be in the form of
a skin of Victorian brick finish in the same colour and dimensions as original
brick.

 

Advantages

Improves weather protection

Provides noise insulation

It’s easier to take care of thermal bridges such as exposed concrete
frame or window sill

Preserves the value of the thermal mass of the walls in regulating
temperature inside

 

Disadvantages

If there is not sufficient roof overhang, the top of the extended wall
must be sloped, weatherproofed, and guttering fitted

May need planning permission – ask the planning department (conservation
area)

Downpipes and other projections, or service entry points, must be dealt
with

The damp proof course and window trickle vents must not be covered

 

(Superhomes.org.uk,
2016)

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