Green Building Bible, Fourth Edition |
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These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
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Posted By: tonyWhole house MVHR will solve it
Posted By: VictorianecoEven at 60% RH (the higher end of 'normal') and an air temperature of 15c (provided)
15c seems a little low in my opinion to leave a house, but then I don't know how long it is left empty for etc.
Posted By: VictorianecoYep, so a simple RH% monitor and surface reading of the windows along with the temperature of the air will give all you need to start with...Exactly, the first question is are the windows too cold or is the house air too wet? Obviously they are relative to each other, as tony says, but we still need to establish which is the real source of the problem. Might be both, of course.
Posted By: chrisduncanbut a bit of me wonders if the two substantial stone walls are still drying out.Highly likely unless you did something to actually dry them out
Posted By: dicksterHang on a minute!
We've got lovely triple glazed windows and 2g French Windows with insulated (kind of) blinds as well. Log burning stove (horror of horrors) keeps us at around 20-21 degrees to bedtime, drops to maybe 17-18 on a cold night, stove lit again in morning.
The air inside is too dry most of the time, even with cooking in the room. Don't use the externally vented cooker hood or MHRV and leave wet room door open to allow drying wet floor to add to humidity.
We get up to 30 mm of condensation on the glass at the bottom pane on some of the windows/doors if it has been below freezing outside, as shown in Chris Duncan's pic. We also get external condensation on the outer pane and ice forming on the pane when the right circumstances prevail, (warm front coming in after cold night).
Posted By: chrisduncan
It seems there are two options unless someone can suggest something better. 1) I buy a dehumidifier and leave it running near the sink during the winter (eg Meacodry ABC 10L/day approx £140 and 160W) , and 2) I replace the shower extract fan with a single room MVHR unit (eg Blauberg Mini-air approx £370, 3.2W).
Posted By: Pile-o-StoneOur house is like a Turkish bath if our clothes washing days coincide with a meal of boiled veg!
I'll be fitting MHRV extract vents in both the kitchen and utility room and I'm hoping this will solve both those problems.
Posted By: RobinBwe can get condensation overnight at the bottom of timber 3G windows behind thermal blinds in the kitchen
Posted By: revorIs the area quoted at 60 m2 correct? .
Posted By: revor I suspect your windows are not as thermally broken as you may think. .