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  1. #26
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    I think that is a little different!

    but ben does not understand beams, all is lost

  2. #27
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    Quote Originally Posted by DrAndy View Post
    you will have to take the tiles off, yes

    boarding the roof with wood, or bamboo sheet, can then be done, but that may make the roof too flat so any water may get trapped by the battens

    so put the insulation over the beams, then the battens

    then rehang the tiles

    better to board the roof from the inside, over the beams is easiest, but you could do it between if you put small wood supports

    it will be nice to look up at the beams and board
    Hi DR. A

    Our plans are to board the roof from inside and have a natural finish like weaved bamboo as i mentioned exposing the cathedral roof and rafters. I take it this would be attached to the rafters ???

    Secondly im not still not sure what you mean, im not trying to be stupid, its just i dont know what you mean by beam?

    1>I take roof tiles off.
    2> exposed battens need to come off?
    3> lay down fabric (any ideas of a good one)?
    4> re attach battens,and tiles.

    When you say putting wood board down on the rafters would make it too flat, i dont understand? Dont i need this for fabric to attach?


    Here is a pretty exact copy of the house and its roof structure. Wouldnt i need to add boarding across the rafters to put the fabric down?

    Like this chap:


    Im sorry for the barrage of stupidity i just want to understand what we are all talking about?

    I appreciate the help?
    im hot its so hot today.......milk was a bad choice!

  3. #28
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    Quote Originally Posted by Thetyim View Post
    Quote Originally Posted by DrAndy
    painting the tiles would not work,
    Well it works in Cornwall.
    They use a cement wash over slate tiles
    Ok my bad wood decks fair enough, I know they paint slate with a black substance i didnt realise it was epoxy. My parents house in Devon had that paint on it.

    I know what a beam is, i dont know what it is in regards to a house though? You said DR.A im lost, i think you're right!

  4. #29
    Have you got any cheese Thetyim's Avatar
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    Quote Originally Posted by benlovesnuk
    I know they paint slate with a black substance i didnt realise it was epoxy
    I don't think the stuff they use in the West Country is epoxy.
    It's more like tar or car underseal in texture

  5. #30
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    sorry, I said "beam", you can read "rafter"

    Quote Originally Posted by benlovesnuk
    Here is a pretty exact copy of the house and its roof structure. Wouldnt i need to add boarding across the rafters to put the fabric down? Like this chap:
    that would be Ok for normal circumstances with no leaks, but if you then put battens on it, that would stop any leaked water running down and escaping

    maybe battens with little notches would work

  6. #31
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    Quote Originally Posted by benlovesnuk
    Our plans are to board the roof from inside and have a natural finish like weaved bamboo as i mentioned exposing the cathedral roof and rafters. I take it this would be attached to the rafters ???
    yes, that is easiest

    you could just pin it on the rafters so they get hidden or you could put strips of wood at the top edge of each rafter and fit the board between the rafters so they stay exposed. The former is the easiest and looks fine





    Quote Originally Posted by benlovesnuk
    1>I take roof tiles off. 2> exposed battens need to come off? 3> lay down fabric (any ideas of a good one)? 4> re attach battens,and tiles.
    1. yes
    2. yes
    3, yes, the foil insulation is good, it will bow slightly between the rafters and allow any water to run away. You will not see it as you are boarding the inside
    4. yes
    I have reported your post

  7. #32
    Have you got any cheese Thetyim's Avatar
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    ^
    That looks nice

  8. #33
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    thanks

    I had similar problems to Ben, but after I had boarded it

    the architect had put a fairly shallow slope (around 25 degrees) and hadn't thought about what type of tiles I was going to use

    I chose the tiles without considering the slope of the roof

  9. #34
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    Quote Originally Posted by DrAndy View Post
    Quote Originally Posted by benlovesnuk
    Our plans are to board the roof from inside and have a natural finish like weaved bamboo as i mentioned exposing the cathedral roof and rafters. I take it this would be attached to the rafters ???
    yes, that is easiest

    you could just pin it on the rafters so they get hidden or you could put strips of wood at the top edge of each rafter and fit the board between the rafters so they stay exposed. The former is the easiest and looks fine





    Quote Originally Posted by benlovesnuk
    1>I take roof tiles off. 2> exposed battens need to come off? 3> lay down fabric (any ideas of a good one)? 4> re attach battens,and tiles.
    1. yes
    2. yes
    3, yes, the foil insulation is good, it will bow slightly between the rafters and allow any water to run away. You will not see it as you are boarding the inside
    4. yes
    Ok. Got IT!

    Actually i think i might have mislead you all, there is not a leak all over the house from the roof. Actually the only leak is in the walkway in the middle of the house, right above the ridge plate.

    Im thinking that the slope is at great enough angle and the main roof if fine, based on leaks not appearing all over. It is i think mechanical error or tile broken dislodged and probably from the ridge tiles.

    Thank you for your help, everyone and especially Dr.A and Thetyim.

    We are going to get the roof looked at, i will go take a look and then then see what the damage is.

    In regards to insulation or heat retention,what is better on a cathedral roof?

    I have 2 open passive ventilation baffles in each gable, The room size is open across the whole top floor which is 11m long and 8m wide.

    We might consider putting a dropped ceiling over the bedroom which will be the only room insulated in the walls and floor,this is 4.5 m long x 6 wide.

    I am better to leave it as its a passively cooled house using cross ventilation?

    Or should i still put this heat retention foil in the roof to abate the heat getting in directly from the roof?

    Height from floor to ridge of roof is about 4.5-5 m high

    thanks

  10. #35
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    Quote Originally Posted by DrAndy View Post
    thanks

    I had similar problems to Ben, but after I had boarded it

    the architect had put a fairly shallow slope (around 25 degrees) and hadn't thought about what type of tiles I was going to use

    I chose the tiles without considering the slope of the roof
    Even academics get this stuff wrong then!

    Thanks for the help!

  11. #36
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    Quote Originally Posted by benlovesnuk
    Actually i think i might have mislead you all, there is not a leak all over the house from the roof. Actually the only leak is in the walkway in the middle of the house, right above the ridge plate. Im thinking that the slope is at great enough angle and the main roof if fine, based on leaks not appearing all over. It is i think mechanical error or tile broken dislodged and probably from the ridge tiles.
    you bastard

    no more help, ever, ever

  12. #37
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    Quote Originally Posted by benlovesnuk
    Or should i still put this heat retention foil in the roof to abate the heat getting in directly from the roof?
    yes, it makes a big difference when there is little or no wind

  13. #38
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    I am being told that if i put a radiant foil barrier with a 1" airspace, then normal fiber batten that this would best in reducing heat coming in, for a vaulted ceiling anyway.

    I think polynum is a reasonable brand, would it make sense to use it in the south facing walls in the bedroom, in the manner as well?

    As we have got to still put the internal cladding on, there is room for doing this.

    I would think i dont need it in the floor as that gives me ventilation, plus im not trying to stop cool air from leaving, more just stop excess heat getting in.
    Polynum - Thermal Reflective InsulationPolynum


    Dr.A you are right, your gracious help is wasted on me, its like tyring to get my brain to understand!

    Thanks agan. When im in chiangmai i will take you to pho vienne jant for a beer and the best cuisine in thailand. Its near you so a short stumble home!

  14. #39
    Have you got any cheese Thetyim's Avatar
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    Quote Originally Posted by benlovesnuk
    I think polynum is a reasonable brand, would it make sense to use it in the south facing walls in the bedroom
    Yes..

    Quote Originally Posted by benlovesnuk
    best cuisine in thailand
    Tell us more.
    Where is it?

  15. #40
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    Quote Originally Posted by benlovesnuk
    pho vienne jant
    never heard of it but would be happy to try

    get back soon and you can come round and fix my leaks

  16. #41
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    As others have already said, the angle of the tiles/roof will be specified by the tile manufacturer. Did you check?

    If you roof is at a shallower angle you have no come back from the manufacturers.

    If the "builder" decided on the tiles and the roof slope you could try to get him to do it but I think you have made a few changes during construction so the responsibility looks to be yours.

    The solution, if too shallow, is to strip the tiles, steepen the roof angle and rehang the tiles.

    EDIT:

    Having read your post #34

    Quote Originally Posted by benlovesnuk
    It is i think mechanical error or tile broken dislodged and probably from the ridge tiles.
    That needs to be checked before any stripping/lining etc.
    Last edited by OhOh; 15-09-2011 at 06:46 PM.
    A tray full of GOLD is not worth a moment in time.

  17. #42
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    Quote Originally Posted by DrAndy View Post
    Quote Originally Posted by benlovesnuk
    pho vienne jant
    never heard of it but would be happy to try

    get back soon and you can come round and fix my leaks
    I will take both of you out then!

    fer vien jan Spelt Pho Viang jant, is a Loas/viet cusine place by the court yard area near sunday market. A little bit up from your abode Dr.A.

    Very very good quick, cheap and yet sublime feasting ive tasted. Eat there most night if i could. Beer is good price to and they do Laos beer. So any takers?

    Im pretty sure its not the concrete roof tiles and its not the slope, looking at it again it must be 30+ degrees. Also there are not lots of leaks all over but 1-2 leaks directly under the ridge plate. Thank you anyway OHOH i wil take a good look!

  18. #43
    Have you got any cheese Thetyim's Avatar
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    Quote Originally Posted by benlovesnuk
    the only leak is in the walkway in the middle of the house, right above the ridge plate
    Sounds like you only need to remove and replace the ridge tiles.
    Maybe add some suitably coloured sealant

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