roger k

07:09AM | 02/06/03
Member Since: 02/05/03
3 lifetime posts
my house has concrete block walls. i was considering using ugl drylock waterproofing on the inside walls. my concern is water or moisture becoming traped inside the hollow block wall. has anyone had any problems whit this? the outside of the block walls is sealed with a black tar type of sealer that the builder use. the house is 2 years old. i have no water leakage just dampness.


02:31AM | 02/07/03
Member Since: 01/28/03
693 lifetime posts
If your home was built with attentive care to preventing water intrusion via an exterior french drain system, you should not have an immediate or even a long term worry about water in the webs if your block.

However, tar foundation coating is not a water proofing compound, it is a vapor proofing compound and over time, if your french drain fails, you could have water penetration into your basement.

DryLok will serve as a water and vapor barrier but should not be used as your first line of defense in this regard.

Water and vapor proofing should always be done on the outside of the foundation, but it is not always practical or economical to do so. Especially after a home has been completed.

roger k

05:46AM | 02/07/03
Member Since: 02/05/03
3 lifetime posts
the house does have a french drain at the footer. i was told i could fill the block with expanding foam. this would insulate the wall and also help keep out moisture. has anyone had any experience with this? i am looking to make the basement as dry as possible before i finish it. i will be make part of it into a office and the rest of it a rec room. thanks


04:40PM | 02/08/03
Member Since: 01/28/03
693 lifetime posts
Expanding foam will insulate your walls but it is not a waterproofing or a vapor proofing material.

Foam actually has a high permeablity rating.
Permeability is the quality of a material to allow water or water vapor to pass.

The only way to prevent water from entering your blaock is to apply a specialty coating to the outside of the foundation or a rubber membrane around the outside of the foundation.

Keith Martin

05:23AM | 02/09/03
Member Since: 01/15/03
20 lifetime posts
Homebild is right. The only way to "Waterproof a wall" is an exterior dig up. Foam injection in the wall will insulated but will not waterproof because you cannot completely fill the void of the wall. Closed cell urethane foam is zero perm but cannot be used as waterproofing in this case.
The other method is water management. This involves cutting the floor and installing a footer drain inside.

This will not keep the water out but offers a way to catch it before it causes you harm. Be aware of humidity levels before and after any work. It is possible to stop the water but increase the humidity. High humidity can lead to mold.

Hope this helps,




Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

All bookworms need a good bookmark that inspires them to keep reading. To make this colorful bookmark, cut a rectangular p... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon