Insulating Gable End

[richo106]

Hi all

 

I have a vaulted ceiling in a couple of the bedrooms. What is the best way to insulate this from the loft side? In the bedroom I will be parge coating and dot & dab.

 

I need to bring in 2 x MVHR ducts and couple of cables. I will need to run the ducts up the wall and insulate them too (as have cold loft)

 

I have attached a photo, the ducts will go through right at the apex 

 

Many Thanks

 

p.s I will be fixing the restraint straps with noggins etc

 

Edited May 11, 2023 by richo106

[ProDave]

Don't have a cold loft.  Continue the insulation and air tight layer up the roof to the apex and down again.  So much easier to detail and you have a warm loft.

[richo106]

10 minutes ago, ProDave said:

Don't have a cold loft.  Continue the insulation and air tight layer up the roof to the apex and down again.  So much easier to detail and you have a warm loft.

I looked at having a warm loft but naively I didn’t know this was a thing until it was a bit late. 
 

I looked at doing it like I did the vaulted ceilings with PIR between the rafters and underneath but the cost was just too much that I could stretch as my budget is already ridiculously stretched 

[richo106]

Would battening with 120mm Rockwool between and then 100mm PIR over the top be a good option?

 

This would allow room for the MVHR ducts to run within the insulation