Roof: Renew insulation at the opportunity?

  • Erstellt am 2014-05-01 18:00:38

Paulemann

2014-05-01 18:00:38
  • #1
I wish you a nice holiday,

we want to renovate in the fall. During the planning, we wondered if it makes sense (work, time, money) to insulate the roof anew on this occasion (the panels on the 2nd floor will be removed anyway).

Currently, the entire roof truss is lined with glass wool. This is partially detaching, so that the roof tiles are visible from the inside.

Furthermore, daylight is visible in various places, for example where the chimneys are positioned. A draft is noticeable in some spots.

Questions:

    [*]Does new insulation noticeably save heating costs?
    [*]It gets VERY hot on the 2nd floor in summer, staying there is almost unbearable. Does new insulation improve this?

We are considering insulation between and under the rafters + vapor barrier foil:

    [*]Which materials make sense in terms of price-performance?

We find mineral wool (formaldehyde-free) appealing:

    [*]What does something like this cost per m²?

Finally:

    [*]Is the entire roof insulated or only the actual attic (there are also sloped ceilings on the 2nd floor)?

If fully insulated:

    [*]Can you easily get past the insulation material and the foil on the floor (attic), or how does that work?

I hope I didn’t overwhelm anyone with my first post + best regards
Paulemann





 

Similar topics
25.05.2015Extractor hood / roof or wall14
03.03.2015Insulating the roof with kitchen paper/toilet paper12
24.05.2015KfW 55 with wooden house - U-values: Wall 0.18 - Roof 0.1617
05.05.2016Insulate the roof: flakes, panels or wool17
07.03.2020Children's room on the upper floor open up to the roof25
20.09.2016Extending walls beyond the roof?!43
10.03.2017Roof design / Use of 2nd floor mandatory with 2 full floors23
20.10.2017Roof with photovoltaic or other investment, any experiences?19
12.09.2017Roof constructed too flat - Construction company does not acknowledge the defect12
21.10.2017Sealing the base slab before the roof is installed19
20.04.2018Roof covered with fake tiles - house accepted.12
29.10.2018Roof, flat roof, gable roof, shed roof - How much does each cost?22
25.03.2019Ceiling suddenly too small for controlled residential ventilation!54
02.07.2019Purlin distance from exterior wall or roof16
02.12.2019Single-family house (2 floors + residential basement + developed attic) approximately 200 sqm - changes162
07.12.2019Bank guarantee from the roofer due to defects in the roof16
27.02.2020Is the vapor barrier in the roof vapor-permeable? Yes? No!16
10.04.2020Rainwater from the roof - drainage in the soil for discharge?12
14.02.2021Re-roofing, roof tiles not possible45
29.11.2023Bought a modern house. Roof not well insulated?12

Oben