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Damp Proofing

Blocked brick air vent (expanding foam)

Anonymous user 01/03/2024 - 2.57 PM

Hi, When we moved into our 1915 ground floor flat we noticed that the previous owners had blocked all the exterior air bricks with expanding foam (!). This is obviously not good for ventilation and we have some issues with damp when stored in storage against the exterior walls. Is there any way of removing expanding foam once it's cured? Or would the whole brick need to be removed and replaced? I've no way of seeing how far back into the vent the foam goes but from a poke with a very long nail it seems it's quite far. Any advice / help would be massively appreciated on who/how would be best to fix this. thanks!

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4 Answers

Pound for Pound

Rating: 5 out of 5
Rugby
Go to your local builders merchant and buy some foam gun clearer .Make sure you have a damp cloth and a dry cloth . Spray the foam and wide the residue of. The foam cleaner is used for cleaning out foam guns so should make easy work of this.
Answered26 January 2022
2

Sheward & sons property maintenance

Rating: 5 out of 5
Birmingham
You’d need to remove the airbrick, clean out all the foam then replace the air brick & internal vents. Ventilation is a must to reduce condensation & any rot to timbers
Answered17 January 2022
1

Mr T Homecare

Rating: 4.9 out of 5
Tiverton
Just get a drill and a drillbit and drill out the holes
Answered17 January 2022
0

Mb Building

Rating: 5 out of 5
St Helens
Remove it. Give a good clean and remove any foam. vents are essential to keep condensations down And keep air in your home fresh. Hope everything goes well for you.
Answered17 January 2022
0