I am going to build an addition with most likely full basement
foundation made from cinder blocks. What's the best way to waterproof
the foundation. My home basement foundation is also built from cinder
blocks with no waterproofing as far as I know. I usually do not have
any leaks as long as gutters are cleaned. However I want to make
maximum effort to ensue the finished basement under addition will be
maximum waterproof. I read that many advanced waterproofing and
damproofing technique require specialized equipment and must be
performed by trained personnel. They are also quit expensive. What's
the best waterproofing method besides obvious pipe drainage that I can
safely and effectively do myself?
The french drain and correct grading of the land is the most important part.
The tar like damp proofing really just stops moisture, not water. Search
this group using the group page of www.google.com and look up basements,
waterproofing and french drains and you will find everything you need.
Basically you need perforated drainage tile, a sock to go around it, tons of
gravel and special fabric to surround the whole thing so mud doesn't mix in
with gravel. Then you use one of the many tar like waterproofing substances
for the walls although like I said they really don't waterproof anything.
Drain tile around the base of the foundation, leading someplace where
the water can go. Parging on the outer surface of the wall, then
a tar-based sealant, up to grade, and something that isn't black
from there up. Grade away from the foundation, and lead
the downspouts away.
What's the tar-based sealant you are talking about? While I understand
the french drain is important and I am going to provide one I still
want to ensure that water won't sip through porous cinder block walls.
So I need to coat or cover it with some waterproofing coat. I know
there are specific waterproofing resin coats that are sprayed on the
walls and prevent water from sipping through. Different products
withstand different hydrostatic pressure. Unfortunately, all of these
products are expensive as they require certified specialist to apply. I
am looking for the best and affordable solution that I can apply
myself. It may not be as effective as specialized coatings but combined
with french drain and proper grading can provide maximum waterproofing
I can achieve by doing things myself.
look up damp proofing emulsions
Walls can be coated with bituminous (asphalt) emulsions, coal tar
emulsions, and rubber based emulsions. I would certainly add
reinforcing mesh to the system. There are other more expensive
systems that use sheets of material and/or drainage mats.
(top posted for your convenience)
Keep the whole world singing . . . .
DanG (remove the sevens)
your lumber yard building center will have this
a asphault emulsion in 5 gallon buckets . roll it on with a regular paint
roller and use a long wooden handel.
be carefull that shit leaps right off the roller and goops ya every
time : )
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