HHSRS VERSION 2

SEPTEMBER 2004

COLD

Persons aged 60 years or over

None

Loft space

EXCESS

Vulnerable group

Related hazards

Loft space

HHSRS VERSION 2

Multiple locations

Yes

No

Secondary hazards

Yes

No

Gas-fired boiler

Rear elevation

Background: This two storey mid-terraced late Victorian house still has three bedrooms, the

original large front bedroom having been partitioned when one of the rear bedrooms was converted

to a bathroom some 35 years ago. At the same time, a single storey kitchen extension was built in

cavity brick and this and the original 9inch rear wall was rendered. The front wall is some 14 inch

thick and comprises a stone outer facing and a brick inner leaf.

Heating and insulation: Around 15 years ago, full central heating was installed in the dwelling run

from a gas-fired boiler located against the boundary wall in the kitchen extension. The windows,

which are mainly sash, are in good condition but single glazed. However, the roof space (where

some of the sarking is torn) lacks any form of thermal insulation above the thick lath and plaster

ceilings.

LIST OF RELEVANT MATTERS

LIKELIHOOD & OUTCOMES

A

# Secondary hazards

A

a)

Thermal insulation

3

-

None

-

b)

Dampness

-

c)

Settling of insulation

-

d)

Type of heating provision

-

e)

Size of heating system

-

f)

Installation & maintenance

-

g)

Controls to heating system

-

h)

Amount of ventilation

-

Key

3

Seriously defective

I)

Ventilation controls

-

2

Defective

j)

Disrepair to ventilation

-

1

Not satisfactory

k)

Draughts/excess ventilation

-

-

Satisfactory/NA

DESCRIPTION OF HAZARDS

Dwelling: 3 bedroomed

pre 1920 House

Front elevation

Improved

Av:1066

Likelihood to

1 in 1,800

Outcomes to

31.6 4.6 21.5 42.3 %

Installing 250mm of loft insulation and replacing the windows throughout with double

glazed units would increase the energy efficiency of the house significantly. This would

reduce the likelihood of excessive cold to better than average.

A B C D E F G H

I

J

Average likelihood, outcomes and HHSRS score for excessive cold for persons aged 60

years or more in pre 1920 houses, 1997-99.

Score

181

HHSRS VERSION 2

SEPTEMBER 2004

HEALTH AND SAFETY RATING SYSTEM SCORES

Pre 1920 House

1 in

180

LIKELIHOOD

Low

High

Averages: 330 Example

180

< 4200 2400 1300 750 420 240 130

75

42

24

13

7.5

4

2.5

1.5 >

Justification

OUTCOMES

Class I

Class II

Class III

Class IV

Justification

RATING

Although some 15 years old, the heating system and its associated controls are

reasonably efficient. The heat loss from the walls is also lower than for many dwellings

of this age, due to their extra thickness, the rendering of the solid walls, and the cavity

walled extension, but particularly due to the fact that it is a mid-terraced dwelling.

However, overall the likelihood is judged higher than average by the single glazing and

the total lack of loft insulation.

%

Averages: 34.0

31.6

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 6.0

4.6

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 18.0

21.5

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 42.0

42.3

31.6

4.6

21.5

42.3

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Although the risk of unhealthily cold indoor temperatures and the consequent risk of

harm is slightly higher than average, the spread of harms is not increased in terms of its

severity.

Example Average: 1066

A B C D E F G H

I

J

Score

1819

RATING SCORES AFTER IMPROVEMENT

IMPROVE

Justification

NEW RATING

Av Nos: