Hi
A year ago I had a piv system installed to help with condensation and high humidity at home (4 bed detached house, just me living here at the minute). However I'm still getting indoor humidity levels of around 70% and in the bedroom i get about a 1 inch band of condensation on windows.
House is heated to around 20⁰ in morning and evening and maintained at around 16⁰ during the day and overnight.
A few details..
-The loft is insulated (300mm)
-Loft humidity is quite high too, often 70-80%
-Loft eaves partly blocked, partly open. I've tried opening felt to impove ventilation and there are 2 small velux windows that I keep open by an inch. Not seen condensation on felt, but velux windows occasionally have some.
-Loft is quite cold compared to house, so I don't think much warm air is getting up there
-Internal wall insulation (50mm rockwool)
-Double glazing throughout
-Both bathrooms have inline extractor fans fitted
-Kitchen and bathroom windows have trickle vents
-Humidistat extractor in kitchen
-No clothes dried indoors on rads
-No obvious signs of water ingress/leaks
-Some exterior ground levels a bit high, but -French drain was fitted and I don't think this is a problem
I measured humidity outside today, around 55% at 5⁰. Loft was about 70% at 7⁰.
I'm wondering if the piv system is pulling the humid air from loft and pumping it into the house, keeping RH% high in house?
Any input greatly appreciated, thank you!
A year ago I had a piv system installed to help with condensation and high humidity at home (4 bed detached house, just me living here at the minute). However I'm still getting indoor humidity levels of around 70% and in the bedroom i get about a 1 inch band of condensation on windows.
House is heated to around 20⁰ in morning and evening and maintained at around 16⁰ during the day and overnight.
A few details..
-The loft is insulated (300mm)
-Loft humidity is quite high too, often 70-80%
-Loft eaves partly blocked, partly open. I've tried opening felt to impove ventilation and there are 2 small velux windows that I keep open by an inch. Not seen condensation on felt, but velux windows occasionally have some.
-Loft is quite cold compared to house, so I don't think much warm air is getting up there
-Internal wall insulation (50mm rockwool)
-Double glazing throughout
-Both bathrooms have inline extractor fans fitted
-Kitchen and bathroom windows have trickle vents
-Humidistat extractor in kitchen
-No clothes dried indoors on rads
-No obvious signs of water ingress/leaks
-Some exterior ground levels a bit high, but -French drain was fitted and I don't think this is a problem
I measured humidity outside today, around 55% at 5⁰. Loft was about 70% at 7⁰.
I'm wondering if the piv system is pulling the humid air from loft and pumping it into the house, keeping RH% high in house?
Any input greatly appreciated, thank you!