getting more ventilation into a lean to

mengele

need to get more air moving around in a lean to I have. it has a roller door at one side which is 12ft x 10ft. all the rest is sealed up. how would I put in more ventilation?

Farrell

mengele wrote: »

need to get more air moving around in a lean to I have. it has a roller door at one side which is 12ft x 10ft. all the rest is sealed up. how would I put in more ventilation?

Side sheeting with the vents in them

mengele

Farrell wrote: »

Side sheeting with the vents in them

the walls are 9inch cavity blocks so cant take sheets off. is there anything that can be drilled through blocks for a bit of air?

Farrell

mengele wrote: »

the walls are 9inch cavity blocks so cant take sheets off. is there anything that can be drilled through blocks for a bit of air?

Can you change the roof to space sheeting?

mengele

Farrell wrote: »

Can you change the roof to space sheeting?

wouldn't that end up letting the rain in a bit

Bullocks

mengele wrote: »

the walls are 9inch cavity blocks so cant take sheets off. is there anything that can be drilled through blocks for a bit of air?

You could core drill a few vents but you would want a fair few for cattle or cut a few opes, in the right place and put space sheeting or lats over it .
Could you resheet the door with space sheeting?
Sorry I see in the op that it's a roller door so that option is out

Miname

Side vented sheeting is waste of time. You need to create a top vent some way and then try letting air in through the side sheeting.the handiest way is to take off the side sheets and even just put a heavy screwdriver as a spacer between the sheets. I had the same problem and spent a good share of time checking this out, I ended up just changing the use of the shed.

mengele

Bullocks wrote: »

You could core drill a few vents but you would want a fair few for cattle or cut a few opes, in the right place and put space sheeting or lats over it .
Could you resheet the door with space sheeting?
Sorry I see in the op that it's a roller door so that option is out

its just machinery in there. are vents better up high or down low. would 6 vents make much of a difference?

mengele

http://www.ebay.ie/itm/5-x-Buff-Weep-Vents-Round-Vent-Cavity-Retaining-Wall-Rendered-Walls-/251543299936?pt=LH_DefaultDomain_3&hash=item3a91262760
would these be the type of vents?

Miname

mengele wrote: »

http://www.ebay.ie/itm/5-x-Buff-Weep-Vents-Round-Vent-Cavity-Retaining-Wall-Rendered-Walls-/251543299936?pt=LH_DefaultDomain_3&hash=item3a91262760
would these be the type of vents?

Not worth a monkeys. We often use them to just let attics or timber frame houses breath. Why do you want a vented machinery shed? Could you not just open the door a bit.

mengele

Miname wrote: »

Not worth a monkeys. We often use them to just let attics or timber frame houses breath. Why do you want a vented machinery shed? Could you not just open the door a bit.

condensation builds on the walls and floor in damp weather even with door open. air is very dead at the other end of shed.

Low Energy Eng

Assuming Your door is perforated put a roof cowel on the opposite side of the shed to where the door if is.

Create a stack effect

Kovu

The easiest thing I can think of would be to switch to a ventilated roller door, don't know how feasible it would be though!

Good loser

mengele wrote: »

its just machinery in there. are vents better up high or down low. would 6 vents make much of a difference?

As high as possible. Preferably in the roof. Hot air rises and should be allowed out.

mengele

are those circular wall vents really that much a waste of time if I put a share around?

Good loser

mengele wrote: »

are those circular wall vents really that much a waste of time if I put a share around?

Hopeless I'd say. Much too small.

If you have cavity blocks knock a few doubles out in second highest rank.

Start with one couple and add if that's not enough.

tomieen jones

Raise two sheets of galvanise about an inch at the opposite side of the prevailing wind !the wind will suck out the stale air once there is an opening at the bottom s some where to leave fresh air be sucked in!
This does work! !

Miname

You can get larger versions of those vents that fit onto a 4" pipe. Get a 41/2" core and drill the walls , put in a bit of sewer pipe and rec 7 the vent covers on the outside and fill around the pipe with mortar or a good mastic from the inside.

yellow50HX

Good loser wrote: »

Hopeless I'd say. Much too small.

If you have cavity blocks knock a few doubles out in second highest rank.

Start with one couple and add if that's not enough.

I did this for the garage in my uncles as the timbers weren't breathing and condensation was building up. Knocked out 2 cavity blocks on the east and west walls then covered them with mesh to keep the birds out. Allows the air to pass through and out the other side dried it up quickly enough.

Essiently you need the air to change in the shed to get the condensation out.

You aid it a lean too, what's it connected to? Can you let it open up high the she'd next to it then let in air on the opposite side?