We're aware that some users are experiencing technical issues which the team are working to resolve. Thank you for your patience.
📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!

Reducing condensation in my loft - too easy??

Options
Hello there,   
I have a familiar story:
In the recent [extreme] cold snap, I've experienced increased levels of condensation in my loft space.
The 'Rockwall' insulation on the floor and the timber rafters have been getting very damp (wet!!) - all a bit frightening tbh.

I have the old, bituminous felt under the tiles.  I've noticed two characteristics about this old felt that I believe is making the condensation problem worse, but I think I can do some DIY fixes.....
 
I'll describe each of the problems with my underfelt, and how I aim to improve the situation:

1. In many places, between the rafters, the top edge of each successive strip of felt has slightly curled back over time (into the loft space) by around 5 - 8 mm.  This, in effect, creates downward-hanging edges from which condensation collects and then drips (onto the floor insulation). 
I plan to cut away these curled edges, perhaps removing ribbons of up to 8mm of felt.  I'll remove as many of these "drip lines" across the loft as I can reach. 

2. The overlap of the successive strips of felt up the roof is quite snug (there's no slack).  This means there's minimal airflow between the strips of felt - unless it's a breezy day.   
I plan to slide discs of foam insulation (cut from lengths of pipe insulation) onto the edges of the felt in order to gently wedge the overlaps apart.  I'll attempt to create scatter of these ventilation gaps across the loft.
 
What do you think??    Do you foresee any problems with my thinking?

Any advice would be appreciated.
Thanks, Vicky

Comments

Meet your Ambassadors

🚀 Getting Started

Hi new member!

Our Getting Started Guide will help you get the most out of the Forum

Categories

  • All Categories
  • 350.6K Banking & Borrowing
  • 253K Reduce Debt & Boost Income
  • 453.4K Spending & Discounts
  • 243.6K Work, Benefits & Business
  • 598.3K Mortgages, Homes & Bills
  • 176.8K Life & Family
  • 256.8K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 16.1K Discuss & Feedback
  • 37.6K Read-Only Boards

Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.