Recent comments in /f/DIY

ChiefInspector69 t1_j6kbkv9 wrote

Also when I was in Canada on both coasts I never really looked at the new construction but I assume it's 2x6 construction with r13 in the walls and maybe r45 in the attic .You don't have the mold and moisture problems we have here which is almost tropical. Anything wood rots here. But it was 84° here today Fahrenheit

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ChiefInspector69 t1_j6kb175 wrote

Yeah I'm home and 4 trade residential and commercial building inspector. Here in Florida houses are built on slabs which essentially means your plumbing is buried under that. Even if the plumber slopes the pipes correctly the concrete people many times Disturbed the pipes so you don't even get proper flow from the beginning. Wood was a much better quality years ago now it is very weak. The wind and seismic provisions in houses are much much better than the past. But here shingles only laugh seven or eight years and HVAC heat pumps only last from 5 to 12 years. Stucco is a massive problem because it is not applied correctly per ASTM standards and even if it was stucco on wood frame is a bad idea.

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Hagenaar t1_j6kasq0 wrote

We're talking about different products I just realized.

Consumer install window film is stuck on with two sided tape to the inside of the frame. This creates a gap from the windows which are recessed from the plane of the wall surface. You put the plastic over the window trim like so.

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teuchuno t1_j6k9x4s wrote

Aye, every morning I go round, open all the curtains and the windows, then close the windows half an hour or so later - no problems. If it's really cold I just mop the condensation off with a cloth (but still open the windows).

Admittedly this is North Wales so not as cold as Chicago, but our houses in the UK are so old and shite that it's still necessary.

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pilotdog68 t1_j6k9agn wrote

But that is only if you don't shrink it tight. If you do, the plastic is in contact with window, no air gap right?

So you would want to shrink it some but not all the way, and preferably seal it with dry air inside or else you'll just get condensation inside the plastic.

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LukeTheApostate t1_j6k7vpn wrote

I've had a similar problem in an even colder environment, and other people in my building have had mold problems from it.

So, first thing; many single family homes or row houses will have forced-air heating systems that constantly circulate air. Those will have dehumidifiers on them. When I moved to my building, it was the first radiator-heated place I'd lived in. Radiator heating turns the unit into a sort of sealed box as far as humidity goes. There's a handful of techniques to dealing with this, and many of them didn't occur to me when I first moved into a place that needed them from the combination of uncirculated air and low temperatures.

As others have suggested, a film creating a barrier between (humid) air and the cold window will both prevent condensation build up and significantly improve your heat retention. Most buildings that aren't single family homes (and many that are) have shit-tier windows that leak heat badly and make condensation and heating problems much worse than they have to be.

Managing humidity can help, but not fix the problem. Keeping your bathroom door closed and fan on when you're showering or bathing will cut down on the added humidity. When you're boiling water for food or releasing pressure in a pressure pot, you'll also be getting humidity; opening a window for a few minutes can help vent it.

In my experience, the best way to both prevent condensation and remove any that's built up or frozen is just to point a fan at your window. A dehumidifier can keep your unit drier, but I don't think it'll remove window condensation entirely. On the other hand, just keeping the windows clean doesn't mean you've got the humidity low enough to prevent mold. But, as far as keeping the windows dry, a couple of $10 fans should solve your problems.

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