penetrating damp

Postby Jean Ingarfield » Tue Dec 16, 2008 3:44 pm

I have a 1935 bungalow with two bay windows, floating floor, double glazing, new damp proof course, rendering above damp proof course, new damp course, injected about 20 years ago. Floors have been partly covered by hardboard.
The bay windows have been replastered coated with water repellant, previously had insulation under wallpaper, plain wallpaper, emulsion including any damp emulsion but nothing seems to stop the damp. I have had a tube heater in the bay all winter but it still does not seam to work.

Please can you suggest anything I can do.
Jean Ingarfield
Jean Ingarfield
Posts: 1
Joined: Tue Dec 16, 2008 3:23 pm


Simply Build It

Postby stoneyboy » Wed Dec 17, 2008 10:30 pm

Jean Ingarfield,
How often do you open the windows in the bays? You need to do this to eliminate the possibility of condenstaion before looking for more serious problems.
Posts: 2708
Joined: Wed Dec 10, 2008 6:44 pm

Postby Perry525 » Sat Dec 20, 2008 7:11 pm

Jean, do you have cavity walls?
Do they have cavity insulation?
Are the ties made of steel or cast iron? Have they rusted?
Are there horizontal cracks in the wall?
Has the bay always been damp? Or only since the insulation was installed?
Is it dry during the summer?
Is it wet during the winter after heavy rain?
Is the bay in an exposed position, subject to the prevailing wind and rain?
Posts: 727
Joined: Fri Jul 06, 2007 7:35 pm

Postby TheDoctor5 » Fri Jan 30, 2009 9:54 am

If you type the key words of your question into our search box to the left of the site you may find the answer is already posted or is in the DIY projects section of the website. Every post goes through a monitoring process and using the search box may speed up your answer.
Site Admin
Posts: 1382
Joined: Tue Jan 20, 2009 9:17 am

Display posts from previous
Sort by
Order by


  • Related Topics