Insulation may be required as part of any renovation project and in any case will provide benefits for occupants.
1970s roof insulation.
If there is only 25mm of insulating material then this is likely to date back to the 1970s as this type of.
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If you do have existing roof insulation the first thing to do is to check the depth.
Insulation few houses built in the early 1970s were insulated and where insulation was installed it is unlikely to meet modern requirements.
Other insulation materials in use in the 1970s include vermiculite which can also be dangerous as well as fiberglass and rock wool which are still in use today.
Houses built in the 1970s were generally not insulated.
If you have a period property you may have a split roof for example.
From the 1950s right up to the 1970s flat roof properties and flats were quite popular many were built and are therefore found throughout the uk.
Polyurethane systems used for heat water and sound insulation purposes in roof front reverse ceiling and floors of buildings and in b1 b2 incombustibility class according to din 4102 standard.
It didn t become popular until later however because it was considered very flammable.
Flat roofs have been common in construction for the last 150 years.
The 1950s 1970s another form of insulation that became popular is cellulose.
Where the front is sloping with loft access and the back is flat.