tegwin
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| posted on 17/12/08 at 01:07 PM |
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OT...Stopping leaks through a concrete bunker roof...
My garage is built into the hillside... the reinforced concrete roof is nearly 400mm thick....
However... every time it rains, water percolates through a couple of very very tiny cracks in the concrete and drip inside the garage...
We tried sanding back the top of the roof and brushing on a bitchumin type sealant,...this reduced the water for a bit, but it still comes
through..
Are there any other higher tech alternatives to brushing bitchumin paint stuff on the surface?
Its tempting to seal it, and then backfill the hole above so we have a level garden.....That has to be the reason the slab is so darn thick!
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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Mr Whippy
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| posted on 17/12/08 at 01:11 PM |
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If it has a simple curved inner surface, how about fitting thin plastic sheeting next to the surface to take the water away. Or when its dry soaking
it with an epoxy resin?
Fame is when your old car is plastered all over the internet
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Bladerunner
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| posted on 17/12/08 at 01:20 PM |
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Stopping Leaks
Have a look at www.curon.co.uk
Adventure before Dementia
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will121
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| posted on 17/12/08 at 01:53 PM |
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we have used a two pack product called 'Cromapol'
link
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Ivan
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| posted on 17/12/08 at 02:33 PM |
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Throughout my career of 38 years  I have had huge success in solving leaks in concrete with a cementatious product called "Vandex"
Just mix the powder with water to form a slurry and paint it over the cracks (as long as they are hairline cracks) When moisture is present crystals
grow into the cracks and seal them so if the crack moves the crystals re-grow. They great thing about this product is that you can use it on the
downstream side of the crack as it grows against the flow.
If they are large cracks or holes you will have to chip them out and seal them with a cement vandex mixture using a small pipe to bleed the water away
until set and then plug hole where pipe was with cement Vandex.
I have never been disappointed with Vandex or had a failure.
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blakep82
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| posted on 17/12/08 at 06:47 PM |
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what about fibreglassing the roof? not sure how well it sticks to concrete though
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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dave r
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| posted on 17/12/08 at 09:10 PM |
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sika do a mastic thats sticks like poo to a blanket..and can be applied to damp concrete
it remains flexible.. its what we use on water reservoirs.. if its good enough to keep it in....
will try to remember to find the part number tommorow
[Edited on 17/12/08 by dave r]
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