ASTM D1006-93

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 1006 – 93
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Conducting Exterior Exposure Tests of Paints on Wood
This standard is issued under the fixed designation D 1006; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope met, also the types of woods and structures on which the paints
are to be used are important factors to be considered in
1.1 This practice deals only with the testing of house paints
establishing the exposure program.
and trim paints on new, previously unpainted wood.
1.2 This practice describes a test procedure that embodies
5. Location of Test Stations
the principles considered necessary for reliable results. Varia-
5.1 The climatic conditions of the test sites should be
tions necessitated by circumstances may be introduced by
representative of those of the area in which the paints are to be
agreement provided they do not violate these principles. One
used. The type and rate of failure of a paint film will vary when
procedure embodying the principles is described in the Annex
exposed to different combinations of climatic and atmospheric
for use by those who find it convenient.
conditions. For reliable results, exposure sites should be
1.3 This standard does not purport to address all of the
selected that are representative geographically, climatically,
safety problems, if any, associated with its use. It is the
and in atmospheric contaminations with those of the locality in
responsibility of the user of this standard to establish appro-
which the paint will be used. To obtain conclusions that are
priate safety and health practices and determine the applica-
valid for paints with national distribution requires exposure at
bility of regulatory limitations prior to use.
several sites, selected to cover a wide range in climatic
2. Referenced Documents conditions.
2.1 ASTM Standards:
6. Exposure Positions
D 358 Specification for Wood to Be Used As Panels in
2 6.1 Panels for testing house paints and trim paints should be
Weathering Tests of Coatings
exposed on vertical test fences facing both south and north. In
2.2 U.S. Federal Standard:
comparisons where dirt collection and mildew resistance are
TT-W-571b Federal Specification for Wood-Preservative,
3 not pertinent, north vertical exposures may be omitted. There
Recommended Treating Practice
should be no obstructions close enough to shade test panels
3. Significance and Use from the sun more than 2 h after sunrise, or 2 h before sunset.
6.2 In the case where it is desirable to expose coated panels
3.1 The procedure described in this practice is intended to
in a sheltered area, such as under eaves, a suitable test fence
aid in evaluating the performance of house and trim paints
with a sheltered or eave arrangement can be used (see Annex).
applied to new, previously unpainted wood.
3.2 Since natural environment varies with respect to season,
7. Construction of Test Fences
geography, and topography, test results can vary in accordance
7.1 Test fences should be durable and rigid enough to
with location and may not correlate to actual in-service
remain upright under the action of prevailing winds and frost
performance (5.1).
throughout the contemplated period of testing.
4. Extent of Test Program 7.2 Lower edges of test panels, when mounted on test
fences, should be at least 18 in. (460 mm) above ground level
4.1 The extent of the exterior exposure test program must be
to avoid dampness and mud splash. Backs of painted boards or
governed by the breadth of the conclusions desired. The types
plywood should be protected against direct exposure to the
of paints to be tested, the range in climatic conditions to be
weather by methods such as, (1) having panels on both sides of
the fence, (2) mounting the panels on sheathing, (3) closing the
opposite side of the fence, and (4) sealing the back of the test
This practice is under the jurisdiction of ASTM Committee D-1 on Paint and
Related Coatings, Materials, and Applications and is the direct responsibility of panel with aluminum paint.
Subcommittee D01.27 on Accelerated Testing.
Current edition approved June 15, 1993. Published August 1993. Originally
published as D 1006 – 51 T. Last previous edition D 1006 – 92. Suggested sites include the Great Lakes region, Florida, extreme southern
Annual Book of ASTM Standards, Vol 06.02. Louisiana, the southwest region, and northeast region.
3 5
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Fences, such as presented by W. A. Southard in the May 1959 issue of the
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. Offıcial Digest, are acceptable.
D 1006
7.3 Fences should have watertight caps to keep water from painting is permissible provided no more than 1 week elapses
getting behind test panels. between successive coats and between applying the last coat
and exposing on the test fence; and provided, further, that all
8. Selection of Woods for Test Panels
painting is done under essentially the same drying conditions.
It is necessary to allow each coat to cure sufficiently before top
8.1 Paint need be tested only on woods on which it is likely
coating.
to be used in practice. Conclusions drawn from tests made on
11.3 Preferred procedure is to apply paints with the test
a limited variety of woods, however, should not be generalized
panel in a vertical position and kept vertical until the paint has
for woods of other kinds.
set. If paint is spread on horizontal panels, the panels should be
NOTE 1—See Specification D 358.
placed vertically immediately thereafter.
11.4 Records should be kept of the spreading rates at which
8.2 Prior to use, test lumber and panels should be stored
paints are applied. When the purpose of the tests is to compare
under such conditions that the moisture content of the wood
commercial paints, it may be appropriate to let the painter
will be maintained within the normal range for exterior
apply them at what seems to be their natural spreading rates.
woodwork in the region in which the tests are made.
When the purpose is to study variation in paint composition,
9. Construction of Test Panels application should usually be at suitable predetermined spread-
ing rates that can be controlled by applying a given weight or
9.1 For house paints, unless the pattern of the siding
volume of coating to a measured area.
requires some other choice, test panels should be made of one
or the other of two patterns of siding, namely, |n$ or |n[] by
12. Inspections and Records
6-in. (13 or 20 by 150-mm) bevel siding or 1 by 6-in. (25 by
12.1 After panels have been exposed to the weather, inspec-
150-mm) drop siding.
tions should be made after not more than 1 month, at 3 months,
9.2 If the panels in the house paint test are not subdivided,
and at intervals of 3 months during the first 2 years, and every
one 3-ft (900-mm) length of 6-in. (150-mm) siding will be
6 months thereafter. Midwinter inspections, however, may be
acceptable. If the panels are subdivided, two 18-in. (460-mm)
omitted in northern latitudes. Inspections may be made more
lengths are sufficient. Exposures on wood panels should
frequently if desired. Usually the exposures should be contin-
preferably be carried out on three panels to allow for variations
ued for a considerable length of time after deterioration has
in the wood.
reached the point at which best practice calls for repainting.
9.3 For trim paints, the test panel should carry 1 by 4-in. (25
12.2 Records should be kept on report forms agreed upon
by 100-mm) pieces of trim lumber at each end.
2 2
between the purchaser and seller.
9.4 A test panel of 1.5 ft (1400 cm ) or more in area, as
provided in 9.2, may be subdivided into two or more test areas
13. Report Section
2 2
each not less than 12 in. (300 mm) long and 0.50 ft (470 cm )
13.1 Complete the inspection report covering the various
in area. Each test area is for painting with a different paint.
failure modes agreed upon between the purchaser and the
Paints placed on the test areas of o
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