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PAINT & STAIN GUIDE, EXTERIOR
PAINT FALURE, DIAGNOSIS, CURE, PREVENTION
PAINT FAILURE CHECKLIST
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  PAINT FAILURE - INTERIOR CLUES
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  PAINTING MISTAKE - BAD SURFACE PREP
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  INCOMPATIBLE PAINTS
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  PAINT on STUCCCO, FAILURES
PAINT FAILURE DICTIONARY
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Paint Failure Case Photographs-SITE
Paint Failure Case Photographs-LAB

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Photograph of paint failure details

Paint Failure Photos - Site
InspectAPedia®  -    

  • Field & Lab photographs re Private Party Paint Failure Report 10/9/2006 - Daniel Friedman
  • These onsite paint failure photographs help explain the cause of paint peeling, cracking, chalking, and other paint problems on buildings
Our site offers impartial, unbiased advice without conflicts of interest. We will block advertisements which we discover or readers inform us are associated with bad business practices, false-advertising, or junk science. Our contact info is at InspectAPedia.com/appointment.htm.

This document presents field and lab annotated photographs of severe paint failure on a wood sided pre-1900 building in New York. After a painter skim-coated old paint on the wood siding using 40 gallons of Sherwin Williams C-70 crack and hole filler (not a recommended use of this product), a rapid and extensive failure of the new painted surfaces was evident in less than 90 days. Readers should also see Paint Failure Case Photographs-SITE and then Paint Failure Case Photographs-LAB, and see PAINT & STAIN GUIDE, EXTERIOR for a guide to the selection and proper application of paints and stains on exterior wood surfaces.

Extensive stripping and surface preparation will be required to restore the building. The skim-coat product, a substance intended for small crack and hole filling, was used in violation of the manufacturer's instructions.

© Copyright 2010 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use the links at page left to navigate this document or to go to Other Website Topics. Green links show where you are in our document & website.

Paint Failure Site Photos (selected) - numbers refer to citations in lab sample table

-- Daniel Friedman

The accompanying photographs taken in our forensic lab provide examples of paint contaminants or other conditions associated with paint failures that can be of assistance to analysts investigating paints on buildings, artifacts, and works of art.

Pre-1900 wood sided building in New York's Hudson Valley, site photo providing context for the close-up photographs of exterior paint problems shown below.

Photograph of paint failure details

Site 025 loose, alligatored paint low on walls, an insecure surface that needed to be stripped prior to painting.

Photograph of paint failure details

Site 031 surface of wood clapboard below loose falling-off alligatored paint - this condition was not visible in most areas due to the skim-coating.

Photograph of paint failure details

Site 032 Demonstrating that skim coat was applied over loose failing and alligatored paint on the building exterior wall

Photograph of paint failure details

Site 034 wall surface below failed paint. The light colored wood in lower photo has been exposed to weather following paint failure.

Photograph of paint failure details

Site 035 shows improper use of skim coat material at clapboard butt joint -specifically advised-against by the coating manufacturer.

Photograph of paint failure details

Site 036 shows loose falling off skim coat and paint at clapboard butt joint

Photograph of paint failure details

Site 039 preparing an adhesion test in the painted surface near a failed butt joint

Photograph of paint failure details

Site 043 paint adhesion test in process

Photograph of paint failure details

Site 044 paint adhesion test in process

Photograph of paint failure details

Site 048 paint adhesion test showing removal of new paint from old surface, varying by closeness of the razor cuts

Photograph of paint failure details

Site 050 example of vertical crack in skim coated material; also note the pattern of paint finish indicating that a paint roller was used to apply paint.

Photograph of paint failure details

Site 052 preparing an investigative razor cut to the right of a pre-existing vertical crack in skim coated painted building

Photograph of paint failure details

Site 054 exploring vertical crack in skim coated painted building

Photograph of paint failure details

Site 059 depth of skim coat plus old and new paint exceeds 2mm

Photograph of paint failure details

Site 064 evidence of painting over dirt on siding low on building walls

Photograph of paint failure details

Site 067 failure of edge of skim coat over old paint

Photograph of paint failure details

Site 069 measuring depth of failed skim coat and paint on building wall

Photograph of paint failure details

Site 070 skim coat and new paint falling off reveal adhered older paint layers, confirming that paint failure was not due to moisture push from building interior conditions

Photograph of paint failure details

Site 071 back surface of failed paint chip can be examined for evidence of failure cause

Photograph of paint failure details

Site 078 example of failure in skim coat painted surface

Photograph of paint failure details

Site 079 example of failure of skim coated over clapboard butt joint

Photograph of paint failure details

Site 081 example of horizontal cracking in coating applied over clapboards before painting

Photograph of paint failure details

Site 083 probing multiple cracks in painted surface

Photograph of paint failure details

Site 084 new paint adhesion failure over skim coat

Photograph of paint failure details

Site 091 example of thick skim coat over loose old paint

Photograph of paint failure details

Site 092 example of thick skim coat over loose old paint - detail

Photograph of paint failure details

Site 095 measuring long horizontal crack failure in painted building exterior

Photograph of paint failure details

Site 096 probing horizontal crack in painted skim coat on building exterior - to 10mm of loose paint

Photograph of paint failure details

Site 097 crumbling skim coated crack filler on building exterior leads to paint failure; note dirt and debris, possibly mold growth between layers of material

Photograph of paint failure details

Site 100 probing horizontal and vertical paint crack failure

Photograph of paint failure details

Site 101 paint failure example on building exterior wall

Photograph of paint failure details

Site 106 paint failure example - paint falling off of building over skim coat

Photograph of paint failure details

Site 109 one of the paint products used - the skim coat of crack filler (Sherwin Williams C-70 not applied according to manufacturer's instructions) was the root cause of paint failure on this building, not the choice of primer nor top coat of paint.

Photograph of paint failure details

Site 123 skim coat and paint failing over building trim

Photograph of paint failure details

Site 124 skim coat and paint failing over building trim

Photograph of paint failure details

Site 128 skim coat and paint failing over building trim

Photograph of paint failure details

Site 130 probing thick skim coat failure - note older paint remaining adhered to surface - area was "touched up" after peeling paint began

Photograph of paint failure details

Site 146 sidelight shows skim coating over irregular alligatored and cracked loose paint on clapboards - failing within 90 days of application

Photograph of paint failure details

Site 147 sidelight shows skim coating over irregular alligatored and cracked loose paint on clapboards - failing within 90 days of application

Photograph of paint failure details

Site 149 crumbling skim coating painted-over is failing and releasing paint from surface

Photograph of paint failure details

Site 150 crumbling skim coating painted-over is failing and releasing paint from surface

Photograph of paint failure details

Site 154 typical example of multiple shrinkage cracks in skim coat applied to building exterior as a shortcut where surface preparation was omitted

Photograph of paint failure details

Site 156 skim coat and paint failure below clapboard edge

Photograph of paint failure details

Site 157 paint failure showing older adhered paint layer below confirms that interior building moisture was not a prime cause of lost paint on this surface

Photograph of paint failure details

Site 161 test cut to bare wood

Photograph of paint failure details

Site 172 probing failing paint on building exterior walls

Photograph of paint failure details

Site 177 probing failing paint on building exterior walls

Photograph of paint failure details

Site 182 probing failing paint on building exterior walls - note mold growth on back of paint chip

Photograph of paint failure details

Site 185 documenting thickness of skim layer

Photograph of paint failure details

Site 189 documenting depth of skim layer on trim

Photograph of paint failure details

Site 192 documenting condition of failing paint coating on building exterior trim

Photograph of paint failure details

Site 195 documenting condition of failing paint coating on building exterior trim

Photograph of paint failure details

Site 201 documenting condition of failing paint coating on building exterior trim

Photograph of paint failure details

Site 203 documenting condition of failing paint coating on building exterior trim

Photograph of paint failure details

Site 205 documenting condition of failing paint coating on building exterior trim

Photograph of paint failure details

Site 208 typical horizontal crack failures in exterior paint coating on wood clapboards - paint applied over C-70 skim coat

Photograph of paint failure details

Site 211 typical paint failures in exterior paint coating on wood clapboards - paint applied over C-70 skim coat

Photograph of paint failure details

Site 212 mold on back of paint chip can indicate inadequate surface cleaning prior to painting but in this case it is primarily due to moisture penetration of the paint layers

Photograph of paint failure details

Site 219 cracking exterior paint over skim coat

Photograph of paint failure details

Site 220 cracking exterior paint on wood wall

Photograph of paint failure details

Site 222 probing loose exterior paint

Photograph of paint failure details

Site 242 probing loose exterior paint

Photograph of paint failure details

Site 243 probing loose exterior paint

Photograph of paint failure details

Site 245 probing loose exterior paint

Photograph of paint failure details

Site 246 probing loose exterior paint

Photograph of paint failure details

Site 281 test boards preserved from building exterior demonstrate improper surface preparation and skim coat basis of extensive paint failure

Photograph of paint failure details

Site 282 test boards preserved from building exterior demonstrate improper surface preparation and skim coat basis of extensive paint failure

Photograph of paint failure details

Site 288 test boards preserved from building exterior demonstrate improper surface preparation and skim coat basis of extensive paint failure

Photograph of paint failure details

Site 289 test boards preserved from building exterior demonstrate improper surface preparation and skim coat basis of extensive paint failure

Photograph of paint failure details

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PAINT & STAIN GUIDE, EXTERIOR
PAINT FALURE, DIAGNOSIS, CURE, PREVENTION
PAINT FAILURE CHECKLIST
  PAINT FAILURE - EXTERIOR CLUES
  PAINT FAILURE - INTERIOR CLUES
  PAINT FAILURE - SITE HISTORY of
  PAINT FAILURE INDICATORS
COMMON PAINTING MISTAKES
  PAINTING MISTAKE - BAD SURFACE PREP
  PAINTING SHORTCUT ERRORS
  PAINTING OVER MOISTURE
  INCOMPATIBLE PAINTS
  PAINTING in SUN or WIND
  PAINT on STUCCCO, FAILURES
PAINT FAILURE DICTIONARY
PAINT FAILURE ANALYSIS LAB PHOTOS
Paint Failure Case Photographs-SITE
Paint Failure Case Photographs-LAB

PAINT LAB SAMPLE PREPARATION

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