Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    Regular
    Join Date
    Nov 2005
    Posts
    52
    Post Thanks / Like

    Default Need an expert opionion on Roofing problem

    We need an expert opinion on our roof. We are currently building a new home in Sosua and our builder states that it is normal for water to run between the tiles and the concrete sub roof. We noticed on the fascia that water is seeping through the concrete that has filled the convex shape under the Spanish tile. Now, this water is running consistantly around the whole house.

    We don't believe this is normal and one of two things has happened. The over lap of the tiles wasn't enough. Currently the overlap is 3 inches. Or the tile is too porous and is absorbing water. There are no cracks in the tiles. How many tiles should there be per square meter. The base roof was waterproofed and currently no water is seeping into the house, only the "rivers" on the fascia.

    Thank you in advance for your help.

  2. #2
    Regular
    Join Date
    Mar 2006
    Posts
    234
    Post Thanks / Like

    Default

    Sounds like a big problem to me. I have an Eng. friend who will be back from the U.S. this week. I can ask him when he returns.

  3. #3
    Silver
    Join Date
    Nov 2004
    Posts
    2,765
    Post Thanks / Like

    Default

    Roman and Mediterranean style tiles are a limited protection from water indeed, not only here and in Southern Europe (Roman tiles) but in the US like Southern Florida (Mediterranean tiles) as well.
    In Spain we coated concrete roofs with a gum paint and nylon mesh or tar laminate. Here in the DR I see that better quality homes are first coated with a tar laminated which is heat sealed, while cheaper ones are left bare concrete or just painted with regular wall paint (not good enough). The tar liner laminate material is somewhat similar to US tar tiles... just more flexible and thinner and comes in big rolls. Under tiles it should hold up for decades as long the tiles are not disturbed.
    Concave corners (roof corner unions) should be lined with aluminum foil about 40 to 60cm wide (come in rolls also), so water can run off easily without degrading the tar liner.
    Here sometimes the ones who lay the protection are not the same contractors than the ones who lay the tiles... so, special care should be given to make sure that the later ones don't degrade the liner or protection carelessly.


    Roman tiles, while simple, are quite expensive to the square meter because for each one on the top, there is one upside down underneath. Some builders tend to try to save money or cheat using a little bigger spaces in between bottom tiles... this obviously creates a higher risk of water running underneath, upper tiles flying off during storms and offers nestling spaces to birds and rodents which further raises the tile(s).


    Hope this helps... J-D.

  4. #4
    Regular
    Join Date
    Nov 2005
    Posts
    52
    Post Thanks / Like

    Default

    Thank you for your information. Is there a rule of thumb for over lap? We had heard today that 1/3 overlap is a good standard.

  5. #5
    Silver
    Join Date
    Nov 2004
    Posts
    2,765
    Post Thanks / Like

    Default

    Quote Originally Posted by hicksy View Post
    Thank you for your information. Is there a rule of thumb for over lap? We had heard today that 1/3 overlap is a good standard.
    Overlap of what? Tiles, tar liner?
    ... J-D.

  6. #6
    Bronze
    Join Date
    Mar 2007
    Posts
    805
    Post Thanks / Like

    Default

    I just noticed a new house in our sub division (POP) where they have installed asphalt sheets on a cement roof. Is this a good idea? Would it cause other issues? Just thought it strange. But I too need a roof leaking issue resolved. We have soaked walls from time to time. But it skips the top part of the wall and soaks the middle part?????????

    thanks Phil

  7. #7
    Silver
    Join Date
    Nov 2004
    Posts
    2,765
    Post Thanks / Like

    Default

    Quote Originally Posted by Phil&Gerry View Post
    I just noticed a new house in our sub division (POP) where they have installed asphalt sheets on a cement roof. Is this a good idea? Would it cause other issues? Just thought it strange.
    It's one of the solutions I mentioned above. If it's done right it should be OK... the only other way would be gum paint with a nylon mesh (net) inlaid. That roof will need to be tiled however or the asphalt or tar liner will dry out and flake off quickly. Some will just paint over that too, but that won't do.

    Quote Originally Posted by Phil&Gerry View Post
    But I too need a roof leaking issue resolved. We have soaked walls from time to time. But it skips the top part of the wall and soaks the middle part?????????

    thanks Phil
    Soaked (outer) walls inside? There are a variety of reasons why this could happen. Since most houses are cinder block (CBS), water can run it's way from a completely different part.

    ... J-D.

  8. #8
    Regular
    Join Date
    Apr 2007
    Posts
    174
    Post Thanks / Like

    Default Roof Tiles

    Hi Hicksy,

    At this moment I am unable to help you with your roof problem however you may be in a position to help me I am looking for the current price for Roof Tiles and a Good Supplier.

    Regards
    Thurston

  9. #9
    Silver
    Join Date
    Aug 2004
    Posts
    2,360
    Post Thanks / Like

    Default

    We are currently building in the sosua area and they have started the roof. First came the tar laminate followed by what we would call tar paper in the US that is put under shingles. This "paper" layer was then heat sealed and finally the tile placed. It should "hold water" so to speak. Anything less would leave me somewhat uneasy.

    Bob K

  10. #10
    Regular
    Join Date
    Nov 2005
    Posts
    52
    Post Thanks / Like

    Default

    What is the appropriate overlap of the tiles and the appropriate overlap of the ridge caps and hip caps.

    Unfortunately I can not comment on the current cost of the tiles. We have been refered to a company to get an opinion for our problem. Teja Tec. Bombita Carretera, Sosua 809-571-1278. Contact: Andrea Gude. I will post later on what their comments are when we meet tomorrow.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •