Hi All
My girlfriend has had her roof replaced. The old roof was rosemary tile, about 6 inch by 12 inch in size (from what I remember). The new roof is in some kind of flat concrete manufactured by Redland, I guess DuoPlain http://www.monier.co.uk/products/product-catalogue/productcategory/plain-tile-range.html but considerably larger than the old rosemary tiles (at least 50% bigger in both dimensions).
The house is one half of a semi, so the new tiles have had to be mated up to the old rosemary tiles on the other side of the house. Additionally, the non-functioning chimney had work done to it. The quote sheet said a vented cap would be installed which I presumed would look something like this:
Currently, I can't actually see anything on the chimney stack at all, so I'm wondering if it has been concreted over. This may be relevant to a question I'll ask later.
I'm curious about how the two roofs with differing tile should be joined. Having climbed the scaffold to have a look at what has been done on this particular roof, it seems the two mating surfaces have been butted together reasonably closely and then a thick bead of some kind of silicone laid that predominantly touches the sky facing side of the rosemary tile, and the vertical side of the concrete tile (the concrete tiles are much thicker than the rosemary they butt up to)
Not all the concrete tiles seem cut, so some of the mating surfaces are created from the overlapping parts of the tile, giving a smaller area for the silicone to bond to and in some cases, nothing to bond to. I drew a picture:
[Open Image] [Hosted by PhotoGalaxy.com]
On the left, the tiles without silicone, redland in red, rosemary in brown. On the right, the bead of silicone runs up, but is not continuously mating between both surfaces.
Question: is this an acceptable way of mating two different tiles? What stops water ingress? I cannot see any form of guttering inside the loft underneath the join..
On the underside, the felting looks like some cross between a J cloth and a teabag; white side and black side and millions of little squares sticking the two sides together as if a hot roller has melted the two membranes together at certain pinpoints. I've looked on google images for ages, but can't find anything in good enough detail to know whetehr it's breathable or non-breathable. I ask because there's quite a bit of condensation on the inside of this membrane, on the shaded side of the house. The sunny side was fine, dry, no problems. This also refers to the original query I had over what happened to the chimney: once upon a time, it was an open pot, broken to one side (letting in water at the top and round the base plate) but now nothing is evident on top of the chimney stack. If this has been sealed up completely will it be causing condensation problems?
Given that I have access to the roof and a digital camera, is there anything I can check and/or photograph for you guys to have a look at to be able to say whether this job is likely to give problems? We're currently discussing with the builder what to do about the bathroom ceiling skim work being broken during the works (seems that flex in the roof truss members as they walked ont he roof, has damaged the ceiling that is affixed to the other side of the truss.. The bathroon ceiling follows the roof line on one side of the room
Thanks in advance for reading a long boring post
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My girlfriend has had her roof replaced. The old roof was rosemary tile, about 6 inch by 12 inch in size (from what I remember). The new roof is in some kind of flat concrete manufactured by Redland, I guess DuoPlain http://www.monier.co.uk/products/product-catalogue/productcategory/plain-tile-range.html but considerably larger than the old rosemary tiles (at least 50% bigger in both dimensions).
The house is one half of a semi, so the new tiles have had to be mated up to the old rosemary tiles on the other side of the house. Additionally, the non-functioning chimney had work done to it. The quote sheet said a vented cap would be installed which I presumed would look something like this:
Currently, I can't actually see anything on the chimney stack at all, so I'm wondering if it has been concreted over. This may be relevant to a question I'll ask later.
I'm curious about how the two roofs with differing tile should be joined. Having climbed the scaffold to have a look at what has been done on this particular roof, it seems the two mating surfaces have been butted together reasonably closely and then a thick bead of some kind of silicone laid that predominantly touches the sky facing side of the rosemary tile, and the vertical side of the concrete tile (the concrete tiles are much thicker than the rosemary they butt up to)
Not all the concrete tiles seem cut, so some of the mating surfaces are created from the overlapping parts of the tile, giving a smaller area for the silicone to bond to and in some cases, nothing to bond to. I drew a picture:
[Open Image] [Hosted by PhotoGalaxy.com]
On the left, the tiles without silicone, redland in red, rosemary in brown. On the right, the bead of silicone runs up, but is not continuously mating between both surfaces.
Question: is this an acceptable way of mating two different tiles? What stops water ingress? I cannot see any form of guttering inside the loft underneath the join..
On the underside, the felting looks like some cross between a J cloth and a teabag; white side and black side and millions of little squares sticking the two sides together as if a hot roller has melted the two membranes together at certain pinpoints. I've looked on google images for ages, but can't find anything in good enough detail to know whetehr it's breathable or non-breathable. I ask because there's quite a bit of condensation on the inside of this membrane, on the shaded side of the house. The sunny side was fine, dry, no problems. This also refers to the original query I had over what happened to the chimney: once upon a time, it was an open pot, broken to one side (letting in water at the top and round the base plate) but now nothing is evident on top of the chimney stack. If this has been sealed up completely will it be causing condensation problems?
Given that I have access to the roof and a digital camera, is there anything I can check and/or photograph for you guys to have a look at to be able to say whether this job is likely to give problems? We're currently discussing with the builder what to do about the bathroom ceiling skim work being broken during the works (seems that flex in the roof truss members as they walked ont he roof, has damaged the ceiling that is affixed to the other side of the truss.. The bathroon ceiling follows the roof line on one side of the room
Thanks in advance for reading a long boring post
