Hi Everyone,
This is a request for suggestions to fix a leaking concrete roof for my 80 year old aunt. She has an old house in hot-humid climate which sees 4 months of heavy rains.
The concrete roof of her house was poured about 25 years ago and is showing severe signs of water seepage. Ceilings show signs of seepage, plaster cracking (stuff falls off), and drip water during rains.
Information that I have collected so far -
1. The roof slope may not have been set correctly 25 years ago (initiating the problem).
2. There was 1st round of plastering - time unknown
3. Later a layer of bricks was added to the roof with plastering - time unknown
4. There was a 2nd round of plastering done - 15 years ago
Seeking your thoughts on -
1. Is this roof repairable (~2000 sq.ft.)?
2. If so, is it advisable to add a layer of plaster with waterproofing chemicals after chipping away the layer of bricks and old plaster?
2.1 What should be done to reinforcement steel bars? Very likely to be rusted ad may have expanded.
2.2 Would plastering of the ceilings (from inside) help?
2.3 What's your take on waterproofing chemicals from companies such as Sika? Would that help in this case?
3. Should a new roof be poured?
4. Are there any other alternatives?
Thanks for taking the time to look at this post.
Appreciate your suggestions and opinion.
Thanks,
George
This is a request for suggestions to fix a leaking concrete roof for my 80 year old aunt. She has an old house in hot-humid climate which sees 4 months of heavy rains.
The concrete roof of her house was poured about 25 years ago and is showing severe signs of water seepage. Ceilings show signs of seepage, plaster cracking (stuff falls off), and drip water during rains.
Information that I have collected so far -
1. The roof slope may not have been set correctly 25 years ago (initiating the problem).
2. There was 1st round of plastering - time unknown
3. Later a layer of bricks was added to the roof with plastering - time unknown
4. There was a 2nd round of plastering done - 15 years ago
Seeking your thoughts on -
1. Is this roof repairable (~2000 sq.ft.)?
2. If so, is it advisable to add a layer of plaster with waterproofing chemicals after chipping away the layer of bricks and old plaster?
2.1 What should be done to reinforcement steel bars? Very likely to be rusted ad may have expanded.
2.2 Would plastering of the ceilings (from inside) help?
2.3 What's your take on waterproofing chemicals from companies such as Sika? Would that help in this case?
3. Should a new roof be poured?
4. Are there any other alternatives?
Thanks for taking the time to look at this post.
Appreciate your suggestions and opinion.
Thanks,
George