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I’m the “maintenance director” for a preschool that operates in a 1909 heritage building (in B.C. Canada). I’m not in the trade but am trying to get some information regarding waterproofing foundations. Because of the preschool charter, people can be on the executive only when they have children in the school so the exec turns over every 2 years. Because of this it is difficult to find previous details.
The building is on a hillside was built in 1909 with the basement added in 1956. We are near the coast, high rainfall, natural springs upslope from the building. During the last heavy rain, a new spring popped up, ran across the gravel parking lot, the concrete walk and into the flower beds, causing flooding of the basement. After some emergency ditching alleviated the problem, closer examination revealed this wasn’t a new problem (flood lines, rotten wood at base of stairs ect..)
The foundation is a poured footing and wall (poor compaction in some areas) with cinderblock up to second floor. Approx 2 courses of cinderbloc are below grade.
We have recieved quotes to completely redo perimeter drains on building on building and reseal foundation. I would like some suggestions on products and techniques I can discuss with the contractors quoting the job. Any input on common pitfalls would also be appreciated. There is up to several thousand dollars disparity in the quotes so I am concerned that this is related to materials being used.
All input would be appreciated, Thanks
Replies
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I'm the "maintenance director" for a preschool that operates in a 1909 heritage building (in B.C. Canada). I'm not in the trade but am trying to get some information regarding waterproofing foundations. Because of the preschool charter, people can be on the executive only when they have children in the school so the exec turns over every 2 years. Because of this it is difficult to find previous details.
The building is on a hillside was built in 1909 with the basement added in 1956. We are near the coast, high rainfall, natural springs upslope from the building. During the last heavy rain, a new spring popped up, ran across the gravel parking lot, the concrete walk and into the flower beds, causing flooding of the basement. After some emergency ditching alleviated the problem, closer examination revealed this wasn't a new problem (flood lines, rotten wood at base of stairs ect..)
The foundation is a poured footing and wall (poor compaction in some areas) with cinderblock up to second floor. Approx 2 courses of cinderbloc are below grade.
We have recieved quotes to completely redo perimeter drains on building on building and reseal foundation. I would like some suggestions on products and techniques I can discuss with the contractors quoting the job. Any input on common pitfalls would also be appreciated. There is up to several thousand dollars disparity in the quotes so I am concerned that this is related to materials being used.
All input would be appreciated, Thanks