attic insulation quotes

[dodo]

I just had my first quote for the insulation of my house.

here is the current insulation is 15 cm between the joists of 18 cm.

I am offered a counter joist for 217 euros HT
+ 30 cm of wadding for 756 euros excl.
+ an osb3 306 HT floor so that we can use the attic to store
+ pro clima of 52 euros HT
+456 HT euros of MO

which makes us a little less than 2000 euros including tax.

what do you think of this ofre

[hic]

I just had my first quote for the insulation of my house.

here is the current insulation is 15 cm between the joists of 18 cm.
what do you think of this ofre

Hi dodo
parallel remark

Your old insulation is really missed

it's expensive thermal bridge!

Joist wood is not an insulator,
the joist forms a "thermal bridge"

every time you have a joist that cuts the insulation
you have a thermal bridge.

If you can do it easily put the insulation on the joist,
not between the joists (without crushing the insulation)

(er! the tiles are better if it is well ventilated, especially in summer
(it cools),
and airtight in winter (it insulates), of course)

Hic AReVoiR

[elephant]

If you don't give the dimensions, we can't realize ...

[dodo]

Hic> I didn't understand what you meant.

I would go from 3 * 5 cm of uncrossed glass wool to 30 cm of cotton wool.

elephant> I admit that I have not taken the measurements for the moment but it must be roughly like the room below, around 50 m2.

I will find out about the price of the oouta + joist + osb3 and see how much I would cost the gear, but hey the problem is that you need a machine.

[Christophe]

I did not understand well: it is crawling insulation but for uninhabited roof spaces?

Are there any finishes on the crawlers?

Why not insulate only the floor because if this room is not inhabited, it is a bit of a waste of energy (because it will be heated by losses via the floor)?

The thermal logic consists of isolating heated rooms from unheated rooms. Generally it is cheaper than insulating outside.

Otherwise I laid cotton wadding myself in bulk 2 years ago for our lost roof space, you can consult the file here: https://www.econologie.com/ouate-de-cell ... -3763.html there is even a video at the end https://www.econologie.com/isolation-ave ... -3768.html
and the corresponding subject: https://www.econologie.com/forums/isoler-des ... t4708.html

[dodo]

I did not understand well: it is crawling insulation but for uninhabited roof spaces?

Are there any finishes on the crawlers?

Why not insulate only the floor because if this room is not inhabited, it is a bit of a waste of energy (because it will be heated by losses via the floor)?

The thermal logic consists of isolating heated rooms from unheated rooms. Generally it is cheaper than insulating outside.

Otherwise I put cotton wadding myself in bulk 18 months ago for our lost roof space, you can consult the file here: https://www.econologie.com/ouate-de-cell ... -3763.html there is even a video at the end https://www.econologie.com/isolation-ave ... -3768.html
and the corresponding subject: https://www.econologie.com/forums/isoler-des ... t4708.html

it is a floor insulation.
currently the attic is not habitable but maybe one day we will make them habitable but I'm not sure that there is enough space.

our joists only melt 18 cm so we are forced to make a counter joist in order to be able to reach an insulation of 30 cm and over it we put an osb3 floor in order to be able to use the attic as storage.

[Christophe]

Ah mea culpa, I thought the term joist was reserved for crawlers! (the frame vocabulary I always had a hard time with ... must say that even the pros often mix the terms ...)

In this case, thermally it's good, in terms of the price, compare it with what I paid in January 2008 and add the price of the solivage gear and the installation of the OSB if you want to do it yourself (and if you can do it, not very complicated).

For 50 m² it therefore comes to 40 € / m².

Personally I paid:

https://www.econologie.com/ouate-de-cell ... -3763.html

TOTAL TTC: 586.83 44 to be 13.37 m² € per m² in R 6,5!

Must see if you have help too but do not count on it to finance your project!

Be careful if you do it yourself you pay the VAT on the gear at the normal VAT price (but hey, given the "austerity crisis" because of the pignoufs who govern us it may be called into question this reduced rate in the building. ..)

[dodo]

Ah mea culpa, I thought the term joist was reserved for crawlers!

In this case, thermally it's good, in terms of the price, compare it with what I paid in January 2008 and add the price of the solivage gear and the installation of the OSB if you want to do it yourself (and if you can do it, not very complicated).

For 50 m² it therefore comes to 40 € / m².

Personally I paid:

https://www.econologie.com/ouate-de-cell ... -3763.html

TOTAL TTC: 586.83 44 to be 13.37 m² € per m² in R 6,5!

Must see if you have help too but do not count on it to finance your project!

Be careful if you do it yourself you pay the VAT on the gear at the normal VAT price (but hey, given the "austerity crisis" because of the pignoufs who govern us it may be called into question this reduced rate in the building. ..)

I do not have the price in mind but it is a little less than 40.

I looked a little at the price of wadding in supermarkets via their website, and it takes around 20 euros per bag for 200m / 1.92




for aid I think I would be entitled to the 25% tax credit

[Christophe]

for 200m /1.92

What is this unit?

[dodo]

for 200m /1.92

What is this unit?

in fact I think a bag can make 1.92 m2 for a height of 200mm