How do i stop condensation in my shed?

Oily · 31-12-2007, 3:14 PM

I've just built a wooden shed with plastic corrigated roofing and the condensation that drips from the underside of the roof is making a mess of all the things i want to keep dry

Any ideas please

Reepicheep · 31-12-2007, 4:42 PM

The roof is obviously cold, so any moisture in the shed will condense on it. You could try replacing the roof with insulated roofing panels like you get on conservatories(the multilayer type stuff).
Add some ventilation in the shed may help a little as well.

ufitsy · 31-12-2007, 5:59 PM

As above plus a dehumidifier perhaps a window facing the sun if possible, may sound daft but dont put anything wet in there e.g cloths shoes buckets.

Sonic67 · 31-12-2007, 6:41 PM

Condensation is warm air falling on a cold surface. Warm air holds more moisture than cool air. While the temperature is warm you're fine. As the temperature drops the air can't hold the moisture any more so it forms as condensation on a cold surface. For instance the air during the day is warm. At night the air is colder and this moisture is given up and forms dew on the ground.

Options:

Keep the temperature warm.

Remove the moisture from the air.

Don't put anything wet in there.

Increase ventilation so the moist air can escape. Or seal up the shed so moist air can't get in.

Oily · 31-12-2007, 6:56 PM

Thanks for the info.

Changing the roof isn't an option i'm afraid(lack of cash)i've no power in the shed as of yet so thats the dehumidifier out,so that leaves good 'ol ventilation!!

Hmmmmm,to seal or not to seal,that is the question

**Orson** · 01-01-2008, 6:01 PM

Line your roof with polystyrene - you can get fairly cheap tiles & stick them on (check the type of glue you use or it will melt the polystyrene) or, particularly at this time of year, you may be able to find lots of discarded polystyrene packaging - if you can get enough to cut so it looks acceptable it would be even less expensive.
Combine this with some ventilation & you should be okay.

GaryB · 01-01-2008, 11:12 PM

To encourage the air to flow through naturally, it's a good idea to have one vent at low level at one end of the shed and another at high level at the other end. This should encourage the slightly warmer air to flow out at high level which will suck cooler air in at lower level.

31-12-2007, 3:14 PM	#1
Oily Senior Member Join Date: Jun 2007 Location: Radcliffe Thanks: Gave 63, Got 87 Posts: 1,029	How do i stop condensation in my shed? Advertisement Want to Advertise? I've just built a wooden shed with plastic corrigated roofing and the condensation that drips from the underside of the roof is making a mess of all the things i want to keep dry Any ideas please
	Quote

31-12-2007, 4:42 PM	#2
Reepicheep Member Join Date: Aug 2002 Location: Leicestershire Thanks: Gave 82, Got 49 Posts: 583	Re: How do i stop condensation in my shed? The roof is obviously cold, so any moisture in the shed will condense on it. You could try replacing the roof with insulated roofing panels like you get on conservatories(the multilayer type stuff). Add some ventilation in the shed may help a little as well.
	Quote

31-12-2007, 5:59 PM	#3
ufitsy Senior Member Join Date: Aug 2004 Location: Shropshire Thanks: Gave 597, Got 259 Posts: 2,647	Re: How do i stop condensation in my shed? As above plus a dehumidifier perhaps a window facing the sun if possible, may sound daft but dont put anything wet in there e.g cloths shoes buckets.
	Quote

31-12-2007, 6:41 PM	#4
Sonic67 Illustrious Member Join Date: Sep 2006 Location: Home Blog Entries: 3 Thanks: Gave 1,829, Got 2,382 Posts: 19,274	Re: How do i stop condensation in my shed? Condensation is warm air falling on a cold surface. Warm air holds more moisture than cool air. While the temperature is warm you're fine. As the temperature drops the air can't hold the moisture any more so it forms as condensation on a cold surface. For instance the air during the day is warm. At night the air is colder and this moisture is given up and forms dew on the ground. Options: Keep the temperature warm. Remove the moisture from the air. Don't put anything wet in there. Increase ventilation so the moist air can escape. Or seal up the shed so moist air can't get in.
	Quote

31-12-2007, 6:56 PM	#5
Oily Senior Member Join Date: Jun 2007 Location: Radcliffe Thanks: Gave 63, Got 87 Posts: 1,029	Re: How do i stop condensation in my shed? Thanks for the info. Changing the roof isn't an option i'm afraid(lack of cash)i've no power in the shed as of yet so thats the dehumidifier out,so that leaves good 'ol ventilation!! Hmmmmm,to seal or not to seal,that is the question
	Quote

01-01-2008, 6:01 PM	#6
Orson Moderator Join Date: Feb 2002 Location: Sunny Ilson, pride of Derbyshire! Thanks: Gave 480, Got 505 Posts: 3,154	Re: How do i stop condensation in my shed? Line your roof with polystyrene - you can get fairly cheap tiles & stick them on (check the type of glue you use or it will melt the polystyrene) or, particularly at this time of year, you may be able to find lots of discarded polystyrene packaging - if you can get enough to cut so it looks acceptable it would be even less expensive. Combine this with some ventilation & you should be okay.
	Quote

01-01-2008, 11:12 PM	#7
GaryB Prominent Member Join Date: Nov 2002 Location: St Albans Thanks: Gave 236, Got 1,026 Posts: 4,854	Re: How do i stop condensation in my shed? To encourage the air to flow through naturally, it's a good idea to have one vent at low level at one end of the shed and another at high level at the other end. This should encourage the slightly warmer air to flow out at high level which will suck cooler air in at lower level.
	Quote

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How do i stop condensation in my shed?