Blocking cavity walls?

[mrpez]

I recently moved into a new house and have rats in my loft
I was thinking I could go into the loft and block up the whole perimeter where the eves meet the wall, and block up all the open cavity. Is there any problem in doing this? I just wasn't sure if there might be any ventilation issues?
Thanks

 

[Static]

I recently moved into a new house and have rats in my loft
I was thinking I could go into the loft and block up the whole perimeter where the eves meet the wall, and block up all the open cavity. Is there any problem in doing this? I just wasn't sure if there might be any ventilation issues?
Thanks

Yes you'll get condensation in the loft.. get a cat..

 

[mrpez]

I have 2 air bricks either end of the loft, will I still get condensation?

 

[freddiemercurystwin]

Static may be slightly confused s to what you are intending to block up (as am I tbh) are you talking about blocking the gap at the top of the cavity walls between the inner and outer skins of masonry? Or are you talking about blocking up the gap between the top of the wall and the underside of the roof?

 

[mrpez]

Both! I'm not completely sure where they're getting in so I was going to cover both options!

 

[Static]

Yer i read it as both..

 

[Dhillon]

Will you be happy knowing that the rats can no longer get into the loft BUT there are still rats in the walls? I think you need to concentrate on where they are getting into the walls to begin with and block that instead. As to how you find that entry I do not know, perhaps hire a professional. Or catch one of the little fellas and make him squeal or make him rat

 

[mrpez]

I've inspected the whole building and have blocked every hole I can find but somehow the little sods are still getting in! I don't think its up the cavity they are coming in, but was going to block it in case. I'm going to get the cavities filled anyway so guess that bit doesn't matter.
Is it wise to block the bit where the roof meets the walls?

 

[Dhillon]

Is it wise to block the bit where the roof meets the walls?

If you block the bit where the roof meets the inner or outer wall, you will be blocking the eaves. That is how I read it and that is not good. This will lead to poor ventilation in your loft unless you ventilate in other ways.

 

[mrpez]

ok, thanks, will try and do it with chicken wire or something instead!