Close garrets gives rise to cold air and causes damp damages. The cause
by insufficient ventilation.
Supplement insulation and cold garrets can have problems.
Insulated garrets decreases the heat consumption and gives economic
winnings -but if something goes wrong, damp problems will arise.
The problem is that a modern well isolated cold garret can be chilly
and damp during a substantial part of the year.
It will become worse if damp air from within the house gets into the
cold garret. If the cold garret has been insulated at a later point
without the joint structure being protected against damp -and air leakage,
the risk for damp damages increases.
The results are that pure wood -and other wooden based materials as
plywood and wooden fibre boards- becomes damaged.
An important cause of the problem is that the materials are cold and
damp for a long time. A solution is to place a small radiator that can
warm up the space and in that way creates circulation that removes the
damp.
The chimney is another cause of problems for a garret. In the past
it was in first place a smoke pipe and in the second place a contribution
to house ventilation.
Nowadays, when old house oil warmed houses are given district heating,
the chimney previous functions becomes obsolete.
Therefore the house is altered in several ways. As a smoke pipe the
chimney is warm. Some parts of that warmth are transferred from the
chimney walls to the surrounding materials, resulting in some heating
of them. Eventual condensate evaporates.
When the chimney is cold it the reverse is true, the stone cools down
faster than the air, which enables the air to condensate. And condensate
gives damp damages.
Even the basement and the crawl space can be affected by the chimney
foundation cooling down. If it gets cooler in the basement, the risk
for damp damages increases.
As more we extend the distance heating system, more damages of this
type are going to be noticed.
To prohibit all affections the material must be disinfected and all
spores sterilized. Growth and affections for the next for years becomes
impossible.
Guaranteed.