| Dampproofing
/ Waterproofing: Frequently Asked Questions
Below is a list of some of the most popular Waterproofing
and Dampproofing questions asked of us. If you have additional questions
after reading this, please direct them to: info@karnakcorp.com, use our online form to request more information on a particular
product, or see one of our other FAQ sections in related links.
Q:
Does Karnak offer Warranties or Guarantees on its Dampproofing
/ Waterproofing products?
A: YES! Please contact Karnak Corporation for Warranty information.
Q:
Does Karnak offer an approved applicator
program?
A: Karnak realizes that from time to time the need arises
for Karnak materials to be applied by an "approved applicator".
Karnak does recognize the ability of applicators that install Karnak
products if they have been doing such installations for at least
three (3) years. This is with the understanding that, the Karnak
materials are installed in accordance with Karnak's specifications.
Q: Where
can I obtain Karnak products?
A: Karnak products are available through a variety of distributors
in the U.S. and overseas. Please contact Karnak for your
nearest distributor: Phone 1-800-526-4236, 1-732-388-0300, Fax 1-732-388-9422
or email Karnak info@karnakcorp.com.
Q: What
is the dry or cure time for Karnak products?
A: The dry or cure time for Karnak products depends on the
specific product used and the outside ambient temperature. For the
most part, Karnak brush or spray grade coatings will dry in 24 hours.
Karnak flashing cements and mastics, will "skin" over in 24 hours,
but take longer to fully dry because they are applied at a heavier
rate than spray or brush grade coatings.
Q:
Can I apply Karnak coatings or cements
if rain is imminent?
A: Karnak products should not be applied if rain is imminent
within 24 hours. The exception to this is Karnak's #155, #155AF Amphikote
and #19 Ultra Rubberized
Flashing Cement, these products are designed to be used in either
wet or dry conditions, thereby making them ideal for use as emergency
repair situations.
Q:
How soon after it rains can Karnak products
be applied?
A: 24 to 48 hours after if surface is fully dry.
Q: How
do I clean up a spilled Karnak product?
A: Consult MSDS on the specific product.
Q: How
long does newly poured or applied concrete have to cure before I
can apply Karnak dampproofing or waterproofing products?
A: All newly poured concrete should be cured a minimum of
28 to 30 days prior to applying any Karnak solvent base product
such as Karnak #83AF Fibered Dampproofing,
#86AF Fibered Trowel
Mastic, #229AF
AR-Elastomeric Waterproofing or #W-1 One-Kote.
Newly poured concrete and C.M.U. (Concrete Masonry Unit) should
cure a minimum of 5 to 7 days before applying any Karnak emulsion(water
base) product such as Karnak's #100AF Non-Fibered
Emulsion Dampproofing, #220AF Fibered Emulsion
Dampproofing or #920AF Fibered Emulsion
Mastic.
Q:
Is a protection board required when using
Karnak dampproofing or waterproofing products?
A: Yes! It is highly recommended that a protection board
be utilized to protect the coating from damage prior to and during
back-filling operations.
Q: What
is the difference between Dampproofing and Waterproofing?
A: Waterproofing is defined as the treatment of a structure
or surface to prevent the passage of water under hydrostatic pressure.
Dampproofing is defined as the treatment of a structure or surface
to resist the passage of water in "absence" of hydrostatic pressure.
Q:
What is "Hydrostatic Pressure"?
A: According to the NRCA Hydrostatic Pressure is defined
as "the pressure equivalent to that exerted on a surface by a column
of water of a given height". Use the following chart as a guideline
for Hydrostatic pressure.
| Hydrostatic
Pressure |
| Head
(Feet) |
PSI
(bls. Per sq. in.) |
PSI
(Wall Surfaces) |
PSI
(Floor Surfaces) |
| 0.5 |
0.22 |
15.63 |
31.25 |
| 2.0 |
0.43 |
31.25 |
62.50 |
| 3.0 |
0.87 |
62.50 |
125.00 |
| 3.0 |
1.30 |
93.75 |
187.49 |
| 4.0 |
1.73 |
125.00 |
250.00 |
| 5.0 |
2.17 |
156.25 |
312.50 |
| 10.0 |
4.34 |
312.50 |
625.00 |
| 20.0 |
8.68 |
625.00 |
1250.00 |
| 40.0 |
17.36 |
1250.00 |
2500.00 |
| 60.0 |
26.04 |
1875.00 |
3750.00 |
| 80.0 |
34.72 |
2500.00 |
5000.00 |
| 100.0 |
43.40 |
3125.00 |
6250.00 |
Q:
How long do I have to wait before back-filling
after applying Karnak dampproofing or waterproofing products?
A: Back-filling should take place within 7 days after application
to protect the installed product from physical damage.
Q: Is
priming necessary prior to applying a Karnak dampproofing or waterproofing
product?
A: Yes! Primers are recommended to prepare porous or slightly
dusty surfaces prior to the application of coatings or mastics.
Q: Can
Karnak dampproofing or waterproofing products be applied below freezing
temperatures?
A: Karnak products are recommended to be applied at 40° F
to 50° F and rising.
Don't see your question here? Try
one of our other FAQ sections:
You can also email your question to info@karnakcorp.com, or use our online form to request more information on a particular
product. |
