If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Hi all! We have been experiencing an issue on site where threads have been missing the latest postings. The platform host Vanilla are working on this issue. A workaround that has been used by some is to navigate back from 1 to 10+ pages to re-sync the thread and this will then show the latest posts. Thanks, Mike.

Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Board insulation

Wailin · 2010-10-15 15:30:17

Just wondering can someone tell me whats the best way to use board insulation in an attic roof between the joists. I have large 8 by 4 sheets, do I cut them with a stanley knife or with a saw and should I put them up in long sheets between the joists or short? Whats the best way to prevent gaps between them also? Thanks in…

15-10-2010 4:30pm

#1

Wailin

Registered Users, Registered Users 2 Posts: 4,432 ✭✭✭

Join Date: August 2010

Posts: 4256

Just wondering can someone tell me whats the best way to use board insulation in an attic roof between the joists. I have large 8 by 4 sheets, do I cut them with a stanley knife or with a saw and should I put them up in long sheets between the joists or short? Whats the best way to prevent gaps between them also?
Thanks in advance.

Mod Edit: No need for product name here.

0

Comments

#2 20-10-2010 2:24pm

beyondpassive

Registered Users, Registered Users 2 Posts: 558 ✭✭✭

Join Date: December 2009

Posts: 555

Put an other sheet of 25 PIR board inside the rafters and tape it, its the only way to make it airtight and cold bridge free. I used to foam between board and rafter, but the foam wouldn't adhere to the timber.

0