• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

Bay Window

S

stb654

Joined
5 Apr 2019
Messages
19
Reaction score
0
Country
United Kingdom
Hi all,

Looking for some advice regarding bay windows: Insulation and VCL. (See attached detail).
What’s shown is a warm ventilated (with battens) lead bay roof. I’m pretty sure the detail I have is incorrect as the timber joists do not have insulation between, resulting in a cold spot between the thermal bridging layer underneath and PIR above firings. This also complicates positioning of Vapour check layers.
Would it be best to fully fill the joists instead and have firings over with breather membrane on top and then battens/airspace on top of that?

Many thanks.


083E5A4E-46DF-4323-A4A3-60E364FF34D8.png
 
Ventilating that is a nonsense. Fill it with insulation to remove the condensation risk.

Either way, you would not have a breather membrane on a lead roof. Lead dont breathe.
 

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
You must log in or register to reply here.

Similar threads

littledug
Insulating a bay window
Replies
8
Views
16K
noseall
noseall
Vector771
Bay window PIR insulation plan
Replies
6
Views
3K
Vector771
Vector771
P
Insulation detail cathedral ceiling.
Replies
5
Views
1K
mikeey84
M
frank999
Bay Window insulation
Replies
9
Views
12K
frank999
frank999
M
retiling bay Window advice
Replies
0
Views
2K
mattu27
M
Back
Top