The following standards are expressed in terms of permissible tolerances. The format is designed for easy comprehension as follows:

PD: Possible deficiency - A brief statement of the problem to be considered.

AT: Acceptable tolerance - A statement in measurable terms above which repair may be required and below which the condition is considered to be acceptable. “None” means that the possible deficiency identified is completely unacceptable and no tolerance is allowed.

CR: Contractor responsibility - A statement of the corrective action needed to correct the deficiency or damage.

ROOFS: Roofs should not leak and should be installed to withstand winds accompanied by heavy rains. The contractor should not be responsible for leaks caused by alterations, tie-ins or penetrations caused by owner or others after completion of the roof, nor for extreme weather conditions.

ROOFS - ASPHALT AND FIBERGLASS COMPOSITION
1.PD: Too much exposure.
 AT: Should be reasonably close to recommended dimensions.
 CR: Contractor should make necessary repairs.
2.PD: Uneven, irregular or crooked shingles.
 AT: Shingles should be reasonably straight and courses even in width.
 CR:Contractor should make necessary repairs.
3.PD: Fish mouths and/or curling.
 AT: None.
 CR: Contractor should make necessary repairs.
4.PD: Improper nailing.
 AT: Nailing should be per approved schedule.
 CR: Contractor should make necessary repairs. Excessive nailing (more than six fasteners per shingle) should require shingle replacement.
5.PD: Crooked or unsightly ridges and hips.
 AT: None.
 CR: Contractor should make necessary repairs.
6.PD: Improper, crooked and unsightly valleys.
 AT: None.
 CR: Contractor should make necessary repairs.
7.PD: Flashings and jacks improperly installed.
 AT: None.
 CR: Contractor should make necessary repairs.
8.PD: Improper crickets installed by the roofing contractor.
 AT: Crickets should have a minimum slope of at least twice that of the adjacent roof.
 CR: Contractor should install cricket correctly & repair or replace affected roofing.
9.PD: Improper crickets (installed by other trades).
 AT: Roofer should be responsible for repairing or replacing affected roofing if roofer installs roof over improper crickets. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Contractor should repair or replace affected roofing after cricket has been corrected by the responsible party.
10.PD; Vents or other penetrations located in roof valley.
 AT: Vents or other penetrations should not be located within 18" of valley centerline. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility. CR Roofer should be responsible for repairing or replacing affected roofing.
11.PD: Roof is not of a uniform color or texture due to shingle replacements.
 AT: Shingle replacements within the first two years of installation due to faulty materials or a workmanship deficiency should not exceed 20% of the entire roof area.
 CR: Contractor should remove entire roof and install a new roof.

ROOFS - FLAT BUILT-UP
Failure to obtain a building official’s inspection and approval on re-roofing when required by the governing building official may require the roof covering to be completely removed and proper inspections made before applying the new roof.
1.PD: Roof leaks.
 AT: None.
 CR: Contractor should determine cause and properly repair.
2.PD: Roof holds water.
 AT: Minor ponding (up to 1/2" deep in small areas equivalent to no more than 1/3 of span) is acceptable providing roof is dry within 48 hours after rainfall. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: If drainage problem is due to improper framing problems, the roofer should be responsible for repairing or replacing affected roofing.
3.PD: Excessive ponding due to build-up of roofing materials at scuppers.
 AT: Minor ponding (up to 1/2" deep in small areas equivalent to no more than 1/3 of span) is acceptable providing roof is dry within 48 hours after rainfall. CR Contractor should remove excess material and repair as necessary.
4.PD: Bare spots on graveled roofs.
 AT: Gravel should be firmly embedded in flood coat.
 CR: Initial two pounds of gravel per square foot should be embedded in asphalt. Additional two pounds per square foot is for cover. Contractor should apply additional asphalt and embed gravel in bare spots.
5.PD: Scuppers installed too high.
 AT: Scuppers should be installed low enough to drain roof. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Roofer should be responsible for repairing or replacing affected roofing.
6.PD: Improper or non-existent cants.
 AT: None.
 CR: Contractor should make necessary repairs.
7.PD: Improper flashing and counter flashing at parapets and vertical walls.
 AT: None.
 CR: Contractor should make necessary repairs.
8.PD: Chimneys not flashed and counter flashed.
 AT: None.
 CR: Contractor should correct by installing proper flashing.
9.PD: Omitted or improperly installed vent jacks.
 AT: None.
 CR: Contractor should make necessary repairs.
10.PD: Bubbles or roof-ply separations
 AT: Minor bubbles or blisters should not be cut.
 CR: Contractor should make proper repairs as needed. If seam separation occurs as a result of the blister, it should be repaired in accordance with manufacturer’s specifications. If condition is widespread, roof should be replaced.
11.PD: Gravel guard improper size and incorrectly installed.
 AT: None.
 CR: Contractors should make necessary repairs.
12.PD: Roof coating alligatored.
 AT: Some minor alligatoring is normal. Emulsified asphalt used in proper quantities should not alligator excessively.
 CR: Contractor should recoat to correct problems, pursuant to manufacturer's specifications.
13.PD: Seams lifting or curling.
 AT: None.
 CR: Contractor should properly mop down and flood coat.
14.PD: Roof not installed per specifications.
 AT: None - Roof must be proper type and proper number of plies.
 CR: Contractor should repair or replace as necessary.
15.PD: Roofing material applied over debris on roof deck.
 AT: None.
 CR: Contractors should make necessary repairs.
16.PD: Improper crickets installed by the roofing contractor.
 AT: Crickets should have a minimum slope of at least twice that of the adjacent roof.
 CR: Contractor should install cricket correctly and repair or replace affected roofing.
17.PD: Improper crickets (installed by other trades).

ROOFS - FOAM
Failure to obtain a building official's inspection and approval on re-roofing may require the roof covering to be completely removed and proper inspections made before applying the new roof. For the purposes of these standards, “nominal inch” will be defined as “at least 1 inch” with occasional 7/8” measurements acceptable.
1.PD: Bubbles in foam coating (separation from deck).
 AT: None.
 CR: Contractor should make necessary repairs.
2.PD: Humps in foam.
 AT: None.
 CR: Contractor should make necessary repairs.
3.PD: Ripples in foam.
 AT: Excessive waves or ripples are unacceptable.
 CR: Contractor should make necessary repairs.
4.PD: Coating too thin or incomplete.
 AT: Coating should be proper thickness and have no voids.
 CR: Contractor should recoat as necessary.
5.PD: Overspray on areas of building or equipment.
 AT: None.
 CR: Contractor should remove overspray and clean affected areas.
6.PD: Repairs with asphaltic materials.
 AT: None – Unapproved materials should not be used on foam.
 CR: Contractor should remove and repair with foam or approved materials.
7.PD: Scuppers or drains plugged by foam.
 AT: None.
 CR: Contractor should make necessary repairs.
8.PD: Debris on roof.
 AT: None.
 CR: Contractor should remove debris from roof and recoat foam if necessary.
9.PD: Ponding.
 AT: Minor ponding (up to 1/2" deep in small areas equivalent to no more than 1/3 of span) is acceptable providing roof is dry within 48 hours after rainfall. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Contractor should make necessary repairs to insure proper drainage.
10.PD: Improper crickets (installed by other trades).
 AT: Roofer will be responsible if the roofer installs roof over improper crickets. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Contractor should install cricket correctly and repair or replace roofing.

ROOFS - LIGHTWEIGHT AGGREGATE CONCRETE
​1.PD: Roof leaks.
 AT: None.
 CR: Contractor should determine cause and make necessary repairs.
2.PD: Improper underlayment.
 AT:Since the underlayment is really the waterproof barrier, it should be of the specified material and properly installed.
 CR: Contractor should remove roof and replace.
3.PD: Excessive cracking or chipping.
 AT: None.
 CR: Contractor should remove and replace affected area.
4.PD: Excessively cracked, chipped, irregular and unsightly edges.
 AT: None.
 CR: Contractor should repair or replace as necessary.
5.PD: Unsightly, irregular or chipped rises.
 AT: Forms should not be moved too soon. Edges at rise should be uniform and smooth.
 CR: Contractor should make necessary repairs.
6.PD: Color variation.
 AT: Color between batches should be reasonably close.
 CR: Contractor should remove and replace affected areas.
7.PD: Overspray on building, chimneys or equipment.
 AT: None.
 CR: Contractor should make necessary repairs.
8.PD: Improper crickets (installed by other trades).
 AT: Roofer will be responsible if the roofer installs roof over improper crickets. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Contractor should install cricket correctly and repair or replace.​

ROOFS - TILE1.PD: Roof leaks.
 AT: None.
 CR: Contractor should determine cause of leak and make necessary repairs.
2.PD: Loose or falling tiles.
 AT: None.
 CR: Contractor should make necessary repairs.
3.PD: Ridge - hip and rake tiles loose or missing.
 AT: None.
 CR: Contractor should make necessary repairs.
4.PD: Wood nailers visible under hip or ridge tiles per manufacturer's specifications.
 AT: None.
 CR: Contractor should remove tiles and make necessary repairs.
5.PD: Chipped and broken tiles.
 AT: Chips larger than a quarter or excessive in number are unacceptable. Broken and cracked tiles are unacceptable.
 CR: Contractor should replace affected tiles. Roofing contractor should not be responsible for damage caused by others.
6.PD: Irregular, uneven and unsightly valleys.
 AT: Valleys should be reasonably straight and aesthetically acceptable.
 CR: Contractor should make necessary repairs.
7.PD: Unsightly and/or off color mortar.
 AT: Mortar should be neat and reasonably uniform in color.
 CR: Contractor should make necessary repairs.
8.PD: Improper exposure.
 AT: Exposure should not exceed limits recommended by manufacturer.
 CR: Contractor should make necessary repairs.
9.PD: Vents not flashed or improperly flashed.
 AT: Unapproved, missing or improperly installed roof jacks are unacceptable.
 CR: Contractor should make necessary repairs.
10.PD: Improper or inadequate flashing.
 AT: Flashings should be installed according to manufacturer's recommendations and should be an approved type.
CR: Contractor should make necessary repairs.
11.PD: Improperly installed nailing strips.
 AT: None - Nailing strips should be installed per manufacturer's recommendations.
 CR: Contractor should make necessary repairs.
12.PD: Inadequate underlayment.
 AT: None.
 CR: Contractor should make necessary repairs.
13.PD: Improper crickets (installed by other trades).
AT: Roofer will be responsible if the roofer installs roof over improper crickets. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
CR: Contractor should install cricket correctly and repair or replace roofing.
14.PD: Tile droops at eaves.
 AT: None.
 CR: Contractor should install proper spacer at eaves.
15.PD: Crooked vertical and horizontal lines.
 AT: Vertical and horizontal lines should be reasonably straight unless varied deliberately for effect.
 CR: Contractor should make necessary repairs.

ROOFS - WOOD SHINGLES AND SHAKES​1.PD: Type and grade not per plans and specifications.
 AT: None.
 CR: Contractor should make necessary repairs.
2.PD: Improper exposure, edge lap or spacing.
 AT: Should be reasonably close to recommended dimensions.
 CR: Contractor should make necessary repairs.
3.PD: Edges line up in adjacent courses.
 AT: Edges should not line up within three courses.
 CR: Contractor should make necessary repairs.
4.PD: Improper placement of felt strips when required.
 AT: Felt should not be visible through spacing.
 CR: Contractor should make necessary repairs.
5.PD: Improper nailing.
 AT: Nails should be weather resistant and properly sized for material used.
 CR: Contractor should make necessary repairs.
6.PD: Improper flashings and valleys.
 AT: Flashings and valleys should be the size and type specified or required by code.
 CR: Contractor should make necessary repairs.
7.PD: Loose or uneven ridge and hip shingles.
 AT: Ridges and hips should be straight, uniform and secured.
 CR: Contractor should make necessary repairs.
8.PD: Roof jacks improper.
 AT: Roof jacks should be designed for wood shingles or shakes.
 CR: Contractor should replace jacks if necessary.
9.PD: Starter shingles not used.
 AT: None.
 CR: Contractor should make necessary repairs.
10.PD: Improper crickets (installed by other trades).
 AT: Roofer will be responsible if the roofer installs roof over improper crickets. Verifiable documentation that the potential problem was first submitted to the responsible party may relieve the roofer of responsibility.
 CR: Contractor should install crickets correctly and repair or replace roofing.