Can someone please tell me what these are?

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10 Jun 2012
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Yorkshire
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Hiya,

Just wondering if someone could tell me what these are? They're every 3-4 bricks along just above the damp course and above every window on our property. I'm asking because I've seen a few wasps buzzing in and out of them so I'm wondering if Its safe for my to partially block them?

IMG_20140515_180502-L.jpg
 
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Probably some sort of weep hole for letting condensation out of your cavity so not best to block them up really
 
Aye definitely weep holes, theoretically any rain penetration that gets through the outer skin of brick will then drip down the inside face of the outer skin and then will find its way out through the weep holes. I guess you could somehow fit a gauze over them but really they shouldn't be blocked. Or address the wasp problem.

WEEPHOLES_weeprytwbf.jpg
 
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Thanks for the replies :) Found out they're actually mason bee's not wasps (do'h). We don't really have a problem as such, seems to be the same couple of bee's wandering from one hole to the next maybe searching for somewhere to nest. I just wanted to prevent any possible problems.

I'll have a look see if I can find a sensible way to gauze them up for the summer at least without blocking them off.
 
I was doing some work in my garden last week digging some footings and noticed a lot of bees about. I thought i may have dug up a nest or something but couldn't find anything obvious. Later on i was watching the local news and there was a report about lots of bees around and apparently they were searching for water after a dry spell. The programme suggested putting down a saucer with a small amount of water in it, so i did ad they were straight into it. They could have been attracted by the moisture in the weep holes as they were to the damp clay in my footings. It's since rained and they have all gone now.
 
A small ball of wire wool will prevent insects crawling in and allow water/air to flow feely. No need to ram it in hard, just gently push in slightly beyond the end so its out of sight.
 
I was doing some work in my garden last week digging some footings and noticed a lot of bees about. I thought i may have dug up a nest or something but couldn't find anything obvious. Later on i was watching the local news and there was a report about lots of bees around and apparently they were searching for water after a dry spell. The programme suggested putting down a saucer with a small amount of water in it, so i did ad they were straight into it. They could have been attracted by the moisture in the weep holes as they were to the damp clay in my footings. It's since rained and they have all gone now.

A good idea in dry spells, putting a "bee stick" in helps them too, a bit of wood with one end in the water and one on the rim. They can then land safely on the stick and suck up moisture from it without danger of falling in the water and drowning :D
 

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