Membership Directory & Resource Guide - 2018 - 40

Pool Interior Finish Disclosure
Pool Interior Finishes are composed of materials which
may have inherent shading and/or color variation
which is normal and should not be construed as
a defect. Environmental factors such as humidity,
temperature, substrate conditions, etc., during the
installation process can cause normal color variations
(normal mottling) across the surface of a coating. This
is generally a uniform shading or cloudy appearance.
These variations may be more pronounced on a cloudy
day or at night with the light on. These conditions
are beyond the contractor's control. Discoloration or
mottled‐shade variation is not considered a failure
or defect, but is characteristic of most cementitious
products, not needing remedy. It is a normal
occurrence of most exposed aggregate finishes to
have variation in the surface aggregate density, or
variations in the concentration of aggregates across
the finished surface. Proper evaluation of an interior
finish is done when the pool is full of water and under
natural light conditions only. The pool interior finish
is NOT guaranteed for evenness of color and may
not be the exact shade anticipated. The shade and
color of pigmented surfaces will vary and "fade"
over time. Crazing (check cracks and hairline cracks),
may be noticeable and may be quite pronounced
with colored finishes and are normal and are not
considered defects.

We urge you to contact your NPC
professional applicator for more information
specific to your pool or spa. Chemical
treatment alone will not produce sanitary
pool water. A filtration system in proper
operation along with a regiment of care
including pool brushing will produce the
optimal results for a clean and safe pool.
Additional consumer awareness information is
available from the following sources:

It is highly recommended to perform a start‐up
procedure on freshly plastered pools, such as the NPC
Start‐up Procedure. A proper start‐up will promote a
longer lasting interior finish.
The longevity of the surface will be dependent on
the water chemistry after start‐up being properly
maintained in accordance with the Association of
Pool & Spa Professionals (APSP) published standards
recommended practice of maintaining the Langlier
Saturation Index at 0 to +/‐ 0.5.
Overall common water chemistry parameters to be
monitored are: chlorine, total and carbonate alkalinity,
pH, calcium hardness, cyanuric acid and total
dissolved solids.
Note: The contractor may choose to add a line for the
signature, or initials of the recipient of these disclosures.

The Association of Pool & Spa Professionals
apsp.org
(APSP) 2111 Eisenhower Avenue
Alexandria, VA 22314
703.838.0083
National Swimming Pool Foundation (NSPF)
nspf.org
4775 Granby Circle
Colorado Springs, CO 80919
719.540.9119
National Plasterers Council (NPC)
npconline.org
1000 North Rand Road, Suite 214
Wauconda, IL 60084
847.416.7272
NPC MEMBERSHIP DIRECTORY & RESOURCE GUIDE

40
http://www.apsp.org http://www.nspf.org http://www.npconline.org
Table of Contents for the Digital Edition of Membership Directory & Resource Guide - 2018
