25 September, 2021 at 10:31 am #1142030
I was asked this question this morning.
Most UK homes built before the 1980’s are double walled brick. There a gap in-between both of a few inches. Local councils decided to remove this gap with cavity wall insulation a few years back.
The problem was….brick work on older houses is in a poor condition and filling inside the walls starts to transmit the moisture to the inner wall, causing damp & mould.
And this is the same problem with blocking up chimneys and fire places.
There no issue with over boarding a fireplace and adding a vent, but back filling a chimney flue and removing the chimney pot will lead to problems in the long term.
As a rule, there relined and capped off with a vent.
Spending a little time and money doing this right can save money later on. Damp & mould can cost thousand’s to sort out and find the cause was a lazy builder blocking up old chimney flues really frk you off.
25 September, 2021 at 2:43 pm #1142033
- This topic was modified 3 weeks, 4 days ago by Mr Fishy.
I think fishy has lost it.25 September, 2021 at 3:19 pm #1142034
No mids shikh ask me about this earlier.26 September, 2021 at 12:30 pm #1142040
soem older homes without double ‘leaf’ walls can even suffer badly if interior insulation is fitted to outer walls. creating problems . all properties that allow moisture or water to penetrate or form on walls etc will create issues. hence reason lofts are never sealed but insulated allowing a free flow of air . check near edge of loft and u will find they do not cover right up to edges as that stops draughts ( airflow) that remove moisture etc. it always costs far more to put things right. neighbour bought property and had mould in bedroom form behind headboard . turns out previous owner had had a chimney vent blocked . an air vent was added to allow air flow and mould problems evaporated :)