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 Post subject: Re: Insulation question(s)
PostPosted: Sat Oct 22, 2016 8:30 pm 
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So straddling both draughts and insulation we have wall vents.

Upon investigating why our house lost all heat almost as soon as I turned off the gas I found that all the wall vents were simply a piece of plastic on the inside and out with nothing in between.

In a best case scenario you might have some fancy passive vents but you always a pipe from the outside to in on a very slight angle.

In our case just a series of holes in the walls. The lack of a pipe meant that cold air had immediate access across every wall so you would get draughts even coming through plug holes.

Have still to resolve. Would appreciate any recommendations. Seems when it's not done right the first time diy options are scare.


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 Post subject: Re: Insulation question(s)
PostPosted: Mon Oct 24, 2016 3:38 pm 
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Howitzer wrote:
So straddling both draughts and insulation we have wall vents.

Upon investigating why our house lost all heat almost as soon as I turned off the gas I found that all the wall vents were simply a piece of plastic on the inside and out with nothing in between.

In a best case scenario you might have some fancy passive vents but you always a pipe from the outside to in on a very slight angle.

In our case just a series of holes in the walls. The lack of a pipe meant that cold air had immediate access across every wall so you would get draughts even coming through plug holes.

Have still to resolve. Would appreciate any recommendations. Seems when it's not done right the first time diy options are scare.


Thanks for reminding me. Have the exact same issue with the couple of vents that I did investigate but have yet to tackle it. Pipe in place in both of them but not lined up with the vents so alot of air blowing through the grills will go between the walls.

Was thinking of tackling it myself. What do you mean by your last sentence?

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 Post subject: Re: Insulation question(s)
PostPosted: Mon Oct 24, 2016 4:56 pm 
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In modern houses Vents were installed to prevent carbon monoxide poisoning, especially if there is a gas fire. A carbon monoxide detector might be a better solution.

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 Post subject: Re: Insulation question(s)
PostPosted: Mon Oct 24, 2016 8:47 pm 
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Dubhgeannain wrote:

Was thinking of tackling it myself. What do you mean by your last sentence?

Urghh, meant scarce. I can find a couple of options online but not much.


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 Post subject: Re: Insulation question(s)
PostPosted: Mon Jan 09, 2017 6:31 pm 
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Tagging on to the insulation debate

I'm thinking of external insulation on our 1930's (very cold) house. Spoke with an insulating company who have been mentioned positively several times on this forum & like the sound of their sales pitch which admittedly means very little

My question is the house is semi-detached, red brick on ground floor & pebble dash at bedroom level. If this is externally insulated will the appearance change significantly? The insulating company say they will be able to replicate the existing appearance, albeit the walls will obviously be a little thicker than the neighbour due to the insulation. I'm meeting their rep later in the week & will ask for details of other sites, but just wondering if anyone has carried out this job & what impact it has on the house appearance?


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 Post subject: Re: Insulation question(s)
PostPosted: Mon Jan 09, 2017 10:27 pm 
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@TQ32, First explain your concern to the rep and ask them if they have done any similar houses. Then ask them for the address and go look for yourself. If they can't point to examples then find another company who can.

Ideally both houses would get the job done at the same time, so just on the off chance it would be worth discussing it with your neighbour. It might be something they are interested in and the company might be able to reduce the price a bit for both jobs.

With regards the dashing, it is important that the material used (and the process) is suitable. Some systems (rigid boards) can't be applied directly to dashing (although some systems are ok if the boards are sealed with adhesive around the edges to prevent convection behind the insulation). A Rockwool system like this might be an alternative solution. http://ecofix.ie/technical-information/

With regards the brickwork, that's straightforward enough. Brick slips can be bought to match the existing brickwork and then stuck on to mimic the original. Brick slips can also be made from salvaged brick if necessary. Again, look at examples that the company have done and while you're at it have a chat with the owners and ask them if they are satisfied with the company.


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 Post subject: Re: Insulation question(s)
PostPosted: Mon Jan 09, 2017 10:57 pm 
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Howitzer wrote:
Dubhgeannain wrote:

Was thinking of tackling it myself. What do you mean by your last sentence?

Urghh, meant scarce. I can find a couple of options online but not much.

To go back to a previous question on vents...
Something like this? http://www.fantronix.com/acatalog/Passi ... illes.html

I bought something similar for an extension and they seem fine to me! Easy to fit, with the tubes fitting over each other. Put the outer tube in place and then expanding foam around it to seal around it, then fix the inner one. For a more DIY solution, 4 inch sewer pipe cut to size and foam around.

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 Post subject: Re: Insulation question(s)
PostPosted: Mon Sep 18, 2017 10:01 am 
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I started this thread a full year ago - and have done almost nothing about it in the meantime...

Got quotes for cavity, internal and external. Reckon we'll go with the cavity on one side of the house and internal on the other - only one side is suitable for pumping. However, we are wondering whether we should also get internal insulation in the living room as this is on the side which will be pumped. We'll be getting some built-in shelving in that room and redecorating so don't want to find out afterwards that we should have added insulation.

- Any thoughts on whether it's necessary to use dry-lining on walls that will also be pumped with beads?
- Are there any downsides to doing this?


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 Post subject: Re: Insulation question(s)
PostPosted: Thu Dec 13, 2018 2:01 pm 
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Have large double glazed windows still letting in the cold and letting the heat out.
So I did some quick research and got a large roll and bubble wrapped the inside panes. Noticeable effect on heat loss, or maybe it's a placebo effect


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