Talk:Cavity wall

message: Alright I have no idea to format this since I don't edit wikipedia often, so here goes nothing.
I was reading this article and I stumbled across this section:
The reason cavity insulation keeps heat in, is that the polymer and air in the cavity are bad conductors and good insulators. This is because the distance between the particles in the air is greater than that in a solid, and also polymer has no electrons in its particles to conduct heat as fast as a metal. Now read that back to yourself, mull over exactly what is wrong with that paragraph.
I know that there are electrons in a polymer, but I don't know the specific reason that it is a good insulator, so if someone could come in and edit that bit. For now I will settle for removing the offending sentence to omit this false fact.  —Preceding unsigned comment added by 155.101.100.188 (talk) 14:41, 5 November 2010 (UTC)
thread_title: Untitled

message: The section headed the science of cavity is sloppily written. It needs to be made more precise by someone well acquainted with thermal science. DFH (talk) 19:31, 29 November 2010 (UTC)
replies: text: Changed section title to The science of cavity insulation. DFH (talk) 19:33, 29 November 2010 (UTC)
thread_title:  The science of cavity 

message: Not because it's "wrong" but because it covers only a case. e.g. Many would say they don't care about water but mostly about heat insulation. I suspect it's written by someone from a rainy country. --fs 07:18, 19 December 2010 (UTC)
thread_title:  First paragraph is inaccurate 

message: I added the RefImprove template, however, I don't know enough about the subject in order to add reliable citations to the page. It would be appreciated if someone with the relevant knowledge would be able to improve this page. Dean Sharpe (talk) 14:07, 20 June 2011 (UTC)
thread_title:  Need for additional citations 

message: The article says cavity wall insulation became compulsory in the 1990s. In what jurisdictions? In the UK, the USA, the EU, etc.?
:Definitely in the US through the International Building Code. Don't know about the EU. I'll look for  references. Acroterion (talk) 18:01, 10 February 2015 (UTC)
thread_title:  Building regulations 

message: 'Masonry is an absorbent material, and therefore will slowly draw rainwater or even humidity into the wall. The cavity serves as a way to drain this water back out through weep holes at the base of the wall system or above windows, but is not necessarily vented.'
Water loss primarily occurs by evaporation. Weep holes are often included on recent builds as a secondary backup. Masses of weep-hole-less cavity walls exist, and most such walls never have a damp problem.
'A cavity wall with masonry as both inner and outer skins is more commonly referred to as a double wythe masonry wall.[2]'
It might be one, but is certainly not most commonly refered to as one.
'The typical cavity wall method of construction was introduced in Northwest Europe during the 19th century and gained widespread use from the 1920s.'
Cavity walls have been with us since Roman times. They were the standard method of construction in wet high wind regions long ago, certainly through the 1800s, and were moderately common further inland since the 1800s - though noncavity walls remained in use until well into the 20th century.
' In some early examples stones were used to tie the two leaves of the cavity wall together.[3]'
Yes, and bricks also. Then iron ties which tend to rust & expand in time, then stainless steel.
Tabby (talk) 18:26, 11 May 2015 (UTC)
replies: text: If I understand correctly, ties are required elements of cavity wall construction, however that is not unambiguously clear from the article; only that ties (of a specific material) were used in the past, not that ties are always used, only the material has changed over time. I would appreciate if the article itself could be updated with this information (are ties are mandatory/optional? which materials are/were used, and why/why no longer).  — Preceding unsigned comment added by 2001:A62:11B0:B701:8FDE:F015:3930:7DB (talk) 07:52, 14 August 2016 (UTC)
thread_title:  Asstd 

message: Cavity wall insulation is small and might be best discussed within the context of this broader topic (so, supporting the June proposal). Klbrain (talk) 12:54, 26 December 2020 (UTC)
replies: text: Klbrain (talk) 12:05, 30 June 2021 (UTC)
thread_title:  Merge proposal 

message: Would be nice to add information on how this structure behaves in winter setting. --AXONOV (talk) ⚑ 10:42, 25 May 2021 (UTC)
thread_title:  Winter setting 

message: I'm going to attempt a rewrite of the article that deals with the pastiche of local practices in a more globalized format. Part of the issue involves the British practice of insulating by putting insulating materials into existing cavity walls, or building new cavity walls without a drainage space between the insulation and the outer wythe. At least in North America, these are very much discouraged practices, and appear to have caused significant issues in the UK. We don't need to write articles that espouse bad practices.
Also, there are a lot of overlapping issues of what a cavity wall is - often, again in North America, the backing might be wood frame with only a masonry veneer, or metal framing. And then there are pressure-equalized rainscreen systems, which may be masonry veneer or something else entirely. I will try to navigate those. 
But first, I'm going to attempt a haircut and to weed out the most muddled bits. Referencing will be a work in progress, as references should be from industry best practice references, which can be hard to track down in a form that helps the article.Acroterion (talk) 03:09, 27 April 2024 (UTC)
thread_title: Rewrite