©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
INTERNACHI HOME INSPECTOR – 1 Exam
Questions With Correct Answers 100%
Verified.
The upper edge of a masonry chimney cleanout should be at least ____ inches below the lowest
inlet opening. - Answer✔6
The minimum slope for a composition-shingle roof is ____. - Answer✔2:12
Wood rot may be found when the wood's moisture content is above ____. - Answer✔20%
InterNACHI estimates that of the 45 million existing decks, only _____ are completely safe. -
Answer✔40%
InterNACHI estimates that of the 45 million existing decks, only _____ are completely safe. -
Answer✔40%
Many builders use common "1/2-inch wood sheathing, which has an R-value of ______. -
Answer✔0.6
The U.S. government has established a minimum rating for furnaces of _________. -
Answer✔78%
The minimum efficiency rating for furnaces is ___________. - Answer✔78%
A home must be ventilated to let out moisture. More than ___________ of the water used to
water plants eventually enters the air. - Answer✔99%
Ramps should not have a slope greater than a ___ unit vertical in 12 units horizontal. -
Answer✔1
Traps should be level in relation to a water seal. Traps should have a water seal of at least
_____ inches. - Answer✔2
In a solid wood floor joist, a bored hole should be at least ___ inches from the top or bottom
edge. - Answer✔2
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
For purposes of anchoring to the foundation wall, there should be at least ______ bolts per
plate section. - Answer✔2
In a solid wood floor joist, a bored hole should be at least ___ inches from the top or bottom
edge. - Answer✔2
Masonry chimneys should extend at least ____ feet higher than any portion of a building within
10 horizontal feet. - Answer✔2
On roof slopes greater than 4&12 modern standards call for underlayment courses to overlap
horizontally a minimum of _____ inches. - Answer✔2
The standpipe and trap for an automatic clothes washer should be at least ____ inches in
diameter. - Answer✔2
An attic with an area of 600 square feet with ridge and soffit vents should have a total vent area
of _____ square feet - Answer✔2
A clearance gap of ___ inches is required between a manufactured chimney and combustibles -
Answer✔2
If a roof ridge is closer than 10 feet to a chimney, the stack should be ____ feet higher -
Answer✔2
An attic with an area of 600 square feet with ridge and soffit vents should have a total vent area
of _____ square feet - Answer✔2
A clearance gap of ___ inches is required between a manufactured chimney and combustibles -
Answer✔2
If a roof ridge is closer than 10 feet to a chimney, the stack should be ____ feet higher -
Answer✔2
A proper chimney crown should be constructed of a Portland cement-based mixture and cast or
formed so that it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches. - Answer✔2
House framing components should be at least ____ inches away from the chimney wall -
Answer✔2
A proper masonry chimney cap should be constructed of a Portland cement-based mixture and
cast or formed so it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches - Answer✔2
House framing components should be at least ____ inches away from the chimney wall -
Answer✔2
2
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
A proper masonry chimney cap should be constructed of a Portland cement-based mixture and
cast or formed so it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches - Answer✔2
Felt underlayment on tile roofs with a pitch between 3:12 and 4:12 should have a minimum
_____-inch headlap. - Answer✔2
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum _____-
inch headlap. - Answer✔2
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum _____-
inch headlap - Answer✔2
Open electrical service conductors and multi-conductor cables that are not installed in a
raceway or provided with an approved overall outer jacket should have a clearance of at least
_____ feet from the sides of doors, porches, decks, stairs, ladders, fire escapes and balconies,
and from the sides and bottoms of operable windows. - Answer✔3
The minimum height of a masonry chimney should be _____ feet. - Answer✔3
Open electrical service conductors and multi-conductor cables that are not installed in a
raceway or provided with an approved overall outer jacket should have a clearance of at least
_____ feet from the sides of doors, porches, decks, stairs, ladders, fire escapes and balconies,
and from the sides and bottoms of operable windows. - Answer✔3
Service drops should not pass closer than ____ feet over the ridge of a conventionally pitched
roof. - Answer✔3
A typical chimney is a minimum of ____ feet high - Answer✔3
A typical chimney is a minimum of ____ feet high - Answer✔3
The inspector should inspect for chimneys that terminate less than ___ feet above the highest
point where they pass through the roof surface - Answer✔3
The inspector should inspect for chimneys that terminate less than ___ feet above the highest
point where they pass through the roof surface - Answer✔3
The typical minimum headlap for tile is _____ inches. - Answer✔3
The typical minimum headlap for tile is _____ inches - Answer✔3
The R-value per inch of material for fiberglass batt insulation is ______. - Answer✔3.2
Asphalt shingles that are the most resistant to impact are rated _____. - Answer✔4
3
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
Plywood and OSB can leave the production line with a moisture content as low as _____%. -
Answer✔4
Asphalt shingles are rated for impact resistance by classes 1 through 4 with class _____ shingles
having the highest resistance. - Answer✔4
Woven valleys should never be installed on a roof with a pitch of less than _____:12 -
Answer✔4
Guardrail infill should not permit a _____-inch sphere to pass through. - Answer✔4
Any stairway of ____ or more risers should have a handrail on at least one side. - Answer✔4
In this course, we learned that a minimum riser height is ____ inches. - Answer✔4
Horizontal guards at raised floor areas, balconies and porches should have intermediate rails or
ornamental enclosures that do not allow passage of a ____-inch diameter sphere. - Answer✔4
The flue liner tile should project above the crown a minimum of _____ inches. - Answer✔4
The horizontal spacing for supporting pipe made of cast iron should be a maximum of _____
feet. - Answer✔5
The National Fire Protection Agency (NFPA) recommends that fire extinguishers be tested every
_____ or 12 years, depending on the class/type. - Answer✔5
An open vent pipe that passes through a roof should extend at least _____ inches above the
roof. - Answer✔6
If snow accumulation is expected at various times, then the vent height should be increased so
that the vent pipe will be at least ____ inches above the anticipated accumulation. - Answer✔6
The upper edge of a masonry chimney cleanout should be at least ____ inches below the lowest
inlet opening. - Answer✔6
An open vent pipe that passes through a roof should extend at least _____ inches above the
roof. - Answer✔6
High-wind fastening patterns for most shingles require _____ fasteners - Answer✔6
The triangular area formed by a tread, riser and guard should not allow passage of a ___-inch
diameter sphere. - Answer✔6
Interior stairways with at least ___ risers require wall switches at each floor level, unless the
lights are continuously illuminated or automatically controlled. - Answer✔6
4
INTERNACHI HOME INSPECTOR – 1 Exam
Questions With Correct Answers 100%
Verified.
The upper edge of a masonry chimney cleanout should be at least ____ inches below the lowest
inlet opening. - Answer✔6
The minimum slope for a composition-shingle roof is ____. - Answer✔2:12
Wood rot may be found when the wood's moisture content is above ____. - Answer✔20%
InterNACHI estimates that of the 45 million existing decks, only _____ are completely safe. -
Answer✔40%
InterNACHI estimates that of the 45 million existing decks, only _____ are completely safe. -
Answer✔40%
Many builders use common "1/2-inch wood sheathing, which has an R-value of ______. -
Answer✔0.6
The U.S. government has established a minimum rating for furnaces of _________. -
Answer✔78%
The minimum efficiency rating for furnaces is ___________. - Answer✔78%
A home must be ventilated to let out moisture. More than ___________ of the water used to
water plants eventually enters the air. - Answer✔99%
Ramps should not have a slope greater than a ___ unit vertical in 12 units horizontal. -
Answer✔1
Traps should be level in relation to a water seal. Traps should have a water seal of at least
_____ inches. - Answer✔2
In a solid wood floor joist, a bored hole should be at least ___ inches from the top or bottom
edge. - Answer✔2
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
For purposes of anchoring to the foundation wall, there should be at least ______ bolts per
plate section. - Answer✔2
In a solid wood floor joist, a bored hole should be at least ___ inches from the top or bottom
edge. - Answer✔2
Masonry chimneys should extend at least ____ feet higher than any portion of a building within
10 horizontal feet. - Answer✔2
On roof slopes greater than 4&12 modern standards call for underlayment courses to overlap
horizontally a minimum of _____ inches. - Answer✔2
The standpipe and trap for an automatic clothes washer should be at least ____ inches in
diameter. - Answer✔2
An attic with an area of 600 square feet with ridge and soffit vents should have a total vent area
of _____ square feet - Answer✔2
A clearance gap of ___ inches is required between a manufactured chimney and combustibles -
Answer✔2
If a roof ridge is closer than 10 feet to a chimney, the stack should be ____ feet higher -
Answer✔2
An attic with an area of 600 square feet with ridge and soffit vents should have a total vent area
of _____ square feet - Answer✔2
A clearance gap of ___ inches is required between a manufactured chimney and combustibles -
Answer✔2
If a roof ridge is closer than 10 feet to a chimney, the stack should be ____ feet higher -
Answer✔2
A proper chimney crown should be constructed of a Portland cement-based mixture and cast or
formed so that it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches. - Answer✔2
House framing components should be at least ____ inches away from the chimney wall -
Answer✔2
A proper masonry chimney cap should be constructed of a Portland cement-based mixture and
cast or formed so it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches - Answer✔2
House framing components should be at least ____ inches away from the chimney wall -
Answer✔2
2
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
A proper masonry chimney cap should be constructed of a Portland cement-based mixture and
cast or formed so it provides an overhang projecting beyond all sides of the chimney by a
minimum of _____ inches - Answer✔2
Felt underlayment on tile roofs with a pitch between 3:12 and 4:12 should have a minimum
_____-inch headlap. - Answer✔2
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum _____-
inch headlap. - Answer✔2
Felt underlayment on tile roofs with a pitch of 4:12 or greater should have a minimum _____-
inch headlap - Answer✔2
Open electrical service conductors and multi-conductor cables that are not installed in a
raceway or provided with an approved overall outer jacket should have a clearance of at least
_____ feet from the sides of doors, porches, decks, stairs, ladders, fire escapes and balconies,
and from the sides and bottoms of operable windows. - Answer✔3
The minimum height of a masonry chimney should be _____ feet. - Answer✔3
Open electrical service conductors and multi-conductor cables that are not installed in a
raceway or provided with an approved overall outer jacket should have a clearance of at least
_____ feet from the sides of doors, porches, decks, stairs, ladders, fire escapes and balconies,
and from the sides and bottoms of operable windows. - Answer✔3
Service drops should not pass closer than ____ feet over the ridge of a conventionally pitched
roof. - Answer✔3
A typical chimney is a minimum of ____ feet high - Answer✔3
A typical chimney is a minimum of ____ feet high - Answer✔3
The inspector should inspect for chimneys that terminate less than ___ feet above the highest
point where they pass through the roof surface - Answer✔3
The inspector should inspect for chimneys that terminate less than ___ feet above the highest
point where they pass through the roof surface - Answer✔3
The typical minimum headlap for tile is _____ inches. - Answer✔3
The typical minimum headlap for tile is _____ inches - Answer✔3
The R-value per inch of material for fiberglass batt insulation is ______. - Answer✔3.2
Asphalt shingles that are the most resistant to impact are rated _____. - Answer✔4
3
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:00PM. A+
Plywood and OSB can leave the production line with a moisture content as low as _____%. -
Answer✔4
Asphalt shingles are rated for impact resistance by classes 1 through 4 with class _____ shingles
having the highest resistance. - Answer✔4
Woven valleys should never be installed on a roof with a pitch of less than _____:12 -
Answer✔4
Guardrail infill should not permit a _____-inch sphere to pass through. - Answer✔4
Any stairway of ____ or more risers should have a handrail on at least one side. - Answer✔4
In this course, we learned that a minimum riser height is ____ inches. - Answer✔4
Horizontal guards at raised floor areas, balconies and porches should have intermediate rails or
ornamental enclosures that do not allow passage of a ____-inch diameter sphere. - Answer✔4
The flue liner tile should project above the crown a minimum of _____ inches. - Answer✔4
The horizontal spacing for supporting pipe made of cast iron should be a maximum of _____
feet. - Answer✔5
The National Fire Protection Agency (NFPA) recommends that fire extinguishers be tested every
_____ or 12 years, depending on the class/type. - Answer✔5
An open vent pipe that passes through a roof should extend at least _____ inches above the
roof. - Answer✔6
If snow accumulation is expected at various times, then the vent height should be increased so
that the vent pipe will be at least ____ inches above the anticipated accumulation. - Answer✔6
The upper edge of a masonry chimney cleanout should be at least ____ inches below the lowest
inlet opening. - Answer✔6
An open vent pipe that passes through a roof should extend at least _____ inches above the
roof. - Answer✔6
High-wind fastening patterns for most shingles require _____ fasteners - Answer✔6
The triangular area formed by a tread, riser and guard should not allow passage of a ___-inch
diameter sphere. - Answer✔6
Interior stairways with at least ___ risers require wall switches at each floor level, unless the
lights are continuously illuminated or automatically controlled. - Answer✔6
4
