![]() | The contents of the Cavity wall insulation page were merged into Cavity wall#Insulation on 30 June 2021. For the contribution history and old versions of the merged article please see its history. |
If cavity walls are built as a barrier to moisture, what stops the insulation bridging between both walls and negating the barrier effect? -- ML5 ( talk) 09:58, 2 June 2010 (UTC)
A circular plastic disc clamped on wall-tie holds insulation panel firm against inner wall with an air space gap to outer wall (basically) Soviet99999 ( talk) 18:36, 23 February 2021 (UTC)
If the cavity is filled with a material impervious to vapor, one would think that this would prevent the movement of vapor toward the outside of the wall. Ideally, one would want an impervious vapor-barrier on the inside of a wall, to keep the vapor from migrating into the wall, and then condensing adjacent in the cold, outer part of the wall. The rule is that the vapor barrier should be inside, and vapor-permeable materials should be on the outside, so that the walls remain dry inside. That is necessary to inhibit rot and mold, as well as to protect certain insulation materials such as cellulose and glass fiber. Docbnj ( talk) 15:22, 24 March 2015 (UTC)
Masonry walls have to breath all the way through. From inside the house through inner leaf(wall) and insulation bat and air space gap through outside masonry leaf (wall) into outside atmosphere Soviet99999 ( talk) 18:21, 23 February 2021 (UTC)
Houses originally built with completey hollow cavity walls are 100% perfect as they are.Nothing must be added to cavity later on(it would be detrimental to building),they must remain completely hollow wall cavities Soviet99999 ( talk) 18:33, 23 February 2021 (UTC)
I came to this wiki looking for more information on the points mentioned in talk above. In discussions in the past I've been told that insulation is often a bad idea, and anecdotally I've seen numerous cases where it has resulted in worsening damp conditions after cavity filling has been implemented, or where cavities have been otherwise filled... with trash (crappy builders).
Surely there was a reason why buildings were built with cavities in the first place; It makes logical sense, since a layer of air would act as an insulator and the gap would also serve to allow moisture going either out or in to condense and go out through the ground.
Buildings constructed with completely hollow wall cavities are 100% perfect as they are. Nothing must be later on added to a cavity wall of a building originally made with pure hollow wall cavities
They must be left with there completely hollow wall cavities (as originally built (with) Soviet99999 ( talk) 18:28, 23 February 2021 (UTC)
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The 3 types of cavity wall insulation BAT (rectangular panel) ( Fibreglass , mineralwool or polyester fibre) are placed in cavity wall against inner leaf (wall) ,and held firm against inner leaf (wall) with a circular plastic clip that clamps onto metal cavity wall-tie. There has to be an air space gap of 3/4 inch from showing face of insulation BAT to inner edge of cavity wall-tie drip point, plus a continuation of air space gap to outer leaf (wall) Soviet99999 ( talk) 09:50, 23 February 2021 (UTC)
Please include my contribution Soviet99999 ( talk) 16:03, 23 February 2021 (UTC)
Sprayed foam is wrong to do in masonry walls. wals have to breath Soviet99999 ( talk) 18:11, 23 February 2021 (UTC)
It is wrong to use sprayed foam in masonry walls. Masonry walls have to breath all the way through Soviet99999 ( talk) 18:14, 23 February 2021 (UTC)
![]() | The contents of the Cavity wall insulation page were merged into Cavity wall#Insulation on 30 June 2021. For the contribution history and old versions of the merged article please see its history. |
If cavity walls are built as a barrier to moisture, what stops the insulation bridging between both walls and negating the barrier effect? -- ML5 ( talk) 09:58, 2 June 2010 (UTC)
A circular plastic disc clamped on wall-tie holds insulation panel firm against inner wall with an air space gap to outer wall (basically) Soviet99999 ( talk) 18:36, 23 February 2021 (UTC)
If the cavity is filled with a material impervious to vapor, one would think that this would prevent the movement of vapor toward the outside of the wall. Ideally, one would want an impervious vapor-barrier on the inside of a wall, to keep the vapor from migrating into the wall, and then condensing adjacent in the cold, outer part of the wall. The rule is that the vapor barrier should be inside, and vapor-permeable materials should be on the outside, so that the walls remain dry inside. That is necessary to inhibit rot and mold, as well as to protect certain insulation materials such as cellulose and glass fiber. Docbnj ( talk) 15:22, 24 March 2015 (UTC)
Masonry walls have to breath all the way through. From inside the house through inner leaf(wall) and insulation bat and air space gap through outside masonry leaf (wall) into outside atmosphere Soviet99999 ( talk) 18:21, 23 February 2021 (UTC)
Houses originally built with completey hollow cavity walls are 100% perfect as they are.Nothing must be added to cavity later on(it would be detrimental to building),they must remain completely hollow wall cavities Soviet99999 ( talk) 18:33, 23 February 2021 (UTC)
I came to this wiki looking for more information on the points mentioned in talk above. In discussions in the past I've been told that insulation is often a bad idea, and anecdotally I've seen numerous cases where it has resulted in worsening damp conditions after cavity filling has been implemented, or where cavities have been otherwise filled... with trash (crappy builders).
Surely there was a reason why buildings were built with cavities in the first place; It makes logical sense, since a layer of air would act as an insulator and the gap would also serve to allow moisture going either out or in to condense and go out through the ground.
Buildings constructed with completely hollow wall cavities are 100% perfect as they are. Nothing must be later on added to a cavity wall of a building originally made with pure hollow wall cavities
They must be left with there completely hollow wall cavities (as originally built (with) Soviet99999 ( talk) 18:28, 23 February 2021 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Cavity wall insulation. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 15:26, 17 November 2016 (UTC)
The 3 types of cavity wall insulation BAT (rectangular panel) ( Fibreglass , mineralwool or polyester fibre) are placed in cavity wall against inner leaf (wall) ,and held firm against inner leaf (wall) with a circular plastic clip that clamps onto metal cavity wall-tie. There has to be an air space gap of 3/4 inch from showing face of insulation BAT to inner edge of cavity wall-tie drip point, plus a continuation of air space gap to outer leaf (wall) Soviet99999 ( talk) 09:50, 23 February 2021 (UTC)
Please include my contribution Soviet99999 ( talk) 16:03, 23 February 2021 (UTC)
Sprayed foam is wrong to do in masonry walls. wals have to breath Soviet99999 ( talk) 18:11, 23 February 2021 (UTC)
It is wrong to use sprayed foam in masonry walls. Masonry walls have to breath all the way through Soviet99999 ( talk) 18:14, 23 February 2021 (UTC)