damp caused by cavity insulation

[tonygg]

Hi, I have some damp joists at the front of the house, I think the vents have been blocked by cavity wall insulation.

It was done prior to me buying it, I wondered if theres a record of who did it and whether I would have any comeback ?

 

Also is there a way of clearing them from the outside, (they have very thin gaps) or would I need to get under the floor ?

(the house is tenanted and I would rather stay out due to the virus)

 

thanks

[Vijay]

There is a claim system for this kind of thing http://www.wallcavityclaims.co.uk/

[MikeGrahamT21]

If they are plastic vents, just break them if they don't come out easy with a lump hammer, clean everything out, make a liner out of something waterproof (tile backer board is good for this) to stop anymore stuff dropping down, and then replace the grille, they are only cheap off the internet.

if its a terracotta vent, same as above, and then replace with plastic.

 

All done from the outside.

Edited April 29, 2020 by MikeGrahamT21

[epsilonGreedy]

2 hours ago, tonygg said:

Hi, I have some damp joists at the front of the house, I think the vents have been blocked by cavity wall insulation.

 

 

How old is the house?

 

Are these ground floor or first floor joists?

[tonygg]

22 hours ago, epsilonGreedy said:

 

How old is the house?

 

Are these ground floor or first floor joists?

hi, I think maybe 1930s, ground floor, do they have vents for upper floors ?

[tonygg]

22 hours ago, MikeGrahamT21 said:

If they are plastic vents, just break them if they don't come out easy with a lump hammer, clean everything out, make a liner out of something waterproof (tile backer board is good for this) to stop anymore stuff dropping down, and then replace the grille, they are only cheap off the internet.

if its a terracotta vent, same as above, and then replace with plastic.

 

All done from the outside.

thanks

[epsilonGreedy]

8 minutes ago, tonygg said:

hi, I think maybe 1930s, ground floor, do they have vents for upper floors ?

 

 

I was thinking about weep hole plastic thingies seen on modern builds round window and door lintels and also long the lower dpc where a cavity tray is fitted. Sometimes I ask dumb questions to tease out a bit more detail. Knowing the age of the house might help others picture your situation.

[Temp]

On 29/04/2020 at 16:19, Vijay said:

There is a claim system for this kind of thing http://www.wallcavityclaims.co.uk/

 

I think they may just be no win no fee ambulance chasers.