(a) Heating equipment
(1) General requirements.
(A) The inspector shall report:
(i) the type of heating systems; and
(ii) the energy sources; and
(B) report as Deficient:
(i) inoperative units;
(ii) deficiencies in the thermostats;
(iii) inappropriate location;
(iv) the lack of protection from physical damage;
(v) burners, burner ignition devices or heating elements, switches, and thermostats that are not a minimum of 18 inches above the lowest garage floor elevation, unless the unit is listed for garage floor installation;
(vi) the absence of an opening that would allow access to equipment for inspection, service, repair or replacement without removing permanent construction or building finish;
(vii) when applicable; a floored passageway and service platform that would allow access for equipment inspection, service, repair or replacement; and
(viii) deficiencies in mounting and performance of window and wall units;
(2) Requirements for electric units. The inspector shall report deficiencies in:
(A) performance of heat pumps;
(B) performance of heating elements; and
(C) condition of conductors; and
(3) Requirements for gas units. The inspector shall report as Deficient:
(A) gas leaks;
(B) flame impingement, uplifting flame, improper flame color, or excessive scale buildup;
(C) the absence of a gas shut-off valve within six feet of the appliance;
(D) the absence of a gas appliance connector or one that exceeds six feet in length;
(E) gas appliance connectors that are concealed within or extended through walls, floors, partitions, ceilings or appliance housings; and
(F) deficiencies in:
(i) combustion, and dilution air;
(ii) gas shut-off valves;
(iii) access to a gas shutoff valves that prohibits full operation;
(iv) gas appliance connector materials; and
(v) the vent pipe, draft hood, draft, proximity to combustibles, and vent termination point and clearances; and
(b) Cooling equipment
(1) Requirements for cooling units other than evaporative coolers.
(A) the inspector shall report the type of systems;
(B) the inspector shall report as Deficient:
(i) inoperative units;
(ii) inadequate cooling as demonstrated by its performance;
(iii) the absence of an opening that would allow access to equipment for inspection, service, repair or replacement without removing permanent construction or building finish;
(iv) when applicable; a floored passageway and service platform that would allow access for equipment inspection, service, repair or replacement;
(v) noticeable vibration of blowers or fans;
(vi) water in the auxiliary/secondary drain pan;
(vii) a primary drain pipe that discharges in a sewer vent;
(viii) missing or deficient refrigerant pipe insulation;
(ix) dirty coils, where accessible;
(x) condensing units lacking adequate clearances or air circulation or that has deficiencies in the fins, location, levelness, or elevation above grade surfaces;
(xi) deficiencies in:
(I) the condensate drain and auxiliary/secondary pan and drain system;
(II) mounting and performance of window or wall units; and
(III) thermostats.
(2) Requirements for evaporative coolers.
(A) The inspector shall report:
(i) type of systems;
(ii) the type of water supply line;
(B) The inspector shall report as Deficient:
(i) inoperative units;
(ii) inadequate access and clearances;
(iii) deficiencies in performance or mounting;
(iv) missing or damaged components;
(v) the presence of active water leaks; and
(vi) the absence of backflow prevention.
(c) Duct systems, chases, and vents
(1) The inspector shall report as Deficient:
(A) damaged duct systems or improper material;
(B) damaged or missing duct insulation;
(C) the absence of air flow at accessible supply registers;
(D) the presence of gas piping and sewer vents concealed in ducts, plenums and chases;
(E) ducts or plenums in contact with earth; and
(2) The inspector shall report as Deficient deficiencies in:
(A) filters;
(B) grills or registers; and
(C) the location of return air openings.
(d) For heating, ventilation, and air conditioning systems inspected under this section, the inspector is not required to perform the following actions:
(1) program digital thermostats or controls;
(2) inspect:
(A) for pressure of the system refrigerant, type of refrigerant, or refrigerant leaks;
(B) winterized or decommissioned equipment; or
(C) duct fans, humidifiers, dehumidifiers, air purifiers, motorized dampers, electronic air filters, multi-stage controllers, sequencers, heat reclaimers, wood burning stoves, boilers, oil-fired units, supplemental heating appliances, de-icing provisions, or reversing valves;
(3) operate:
(A) setback features on thermostats or controls;
(B) cooling equipment when the outdoor temperature is less than 60 degrees Fahrenheit;
(C) radiant heaters, steam heat systems, or unvented gas-fired heating appliances; or
(D) heat pumps, in the heat pump mode, when the outdoor temperature is above 70 degrees;
(4) verify:
(A) compatibility of components;
(B) tonnage match of indoor coils and outside coils or condensing units;
(C) the accuracy of thermostats; or
(D) the integrity of the heat exchanger; or
(5) determine:
(A) sizing, efficiency, or adequacy of the system;
(B) balanced air flow of the conditioned air to the various parts of the building; or
(C) types of materials contained in insulation.
TREC Standards of Practice Plumbing
(a) Plumbing systems
(1) The inspector shall:
(A) report:
(i) location of water meter;
(ii) location of homeowners main water supply shutoff valve; and
(iii) static water pressure;
(B) report as Deficient:
(i) the presence of active leaks;
(ii) the lack of a pressure reducing valve when the water pressure exceeds 80 PSI;
(iii) the lack of an expansion tank at the water heater(s) when a pressure reducing valve is in place at the water supply line/system;
(iv) the absence of:
(I) fixture shut-off valves;
(II) dielectric unions, when applicable;
(III) back-flow devices, anti-siphon devices, or air gaps at the flow end of fixtures; and
(v) deficiencies in:
(I) water supply pipes and waste pipes;
(II) the installation and termination of the vent system;
(III) the performance of fixtures and faucets not connected to an appliance;
(IV) water supply, as determined by viewing functional flow in two fixtures operated simultaneously;
(V) fixture drain performance;
(VI) orientation of hot and cold faucets;
(VII) installed mechanical drain stops;
(VIII) commodes, fixtures, showers, tubs, and enclosures; and
(IX) the condition of the gas distribution system.
(2) The inspector is not required to:
(A) operate any main, branch, or shut-off valves;
(B) operate or inspect sump pumps or waste ejector pumps;
(C) verify the performance of:
(i) the bathtub overflow;
(ii) clothes washing machine drains or hose bibbs; or
(iii) floor drains;
(D) inspect:
(i) any system that has been winterized, shut down or otherwise secured;
(ii) circulating pumps, free-standing appliances, solar water heating systems, water-conditioning equipment, filter systems, water mains, private water supply systems, water wells, pressure tanks, sprinkler systems, swimming pools, or fire sprinkler systems;
(iii) inaccessible gas supply system components for leaks;
(iv) for sewer clean-outs; or
(v) for the presence or performance of private sewage disposal systems; or
(E) determine:
(i) quality, potability, or volume of the water supply; or
(ii) effectiveness of backflow or anti-siphon devices.
(b) Water heaters
(1) General Requirements.
(A) The inspector shall:
(i) report:
(I) the energy source;
(II) the capacity of the units;
(ii) report as Deficient:
(I) inoperative units;
(II) leaking or corroded fittings or tanks;
(III) damaged or missing components;
(IV) the absence of a cold water shut-off valve;
(V) if applicable, the absence of a pan or a pan drain system that does not terminate over a waste receptor or to the exterior of the building above the ground surface;
(VI) inappropriate locations;
(VII) the lack of protection from physical damage;
(VIII) burners, burner ignition devices or heating elements, switches, or thermostats that are not a minimum of 18 inches above the lowest garage floor elevation, unless the unit is listed for garage floor installation;
(IX) the absence of an opening that would allow access to equipment for inspection, service, repair or replacement without removing permanent construction or building finish;
(X) when applicable; a floored passageway and service platform that would allow access for equipment inspection, service, repair or replacement;
(XI) the absence of or deficiencies in the temperature and pressure relief valve and discharge piping;
(XII) a temperature and pressure relief valve that failed to operate, when tested manually;
(B) The inspector is not required to:
(i) verify the effectiveness of the temperature and pressure relief valve, discharge piping, or pan drain pipes;
(ii) operate the temperature and pressure relief valve if the operation of the valve may, in the inspector’s reasonable judgment, cause damage to persons or property; or
(iii) determine the efficiency or adequacy of the unit.
(2) Requirements for electric units. The inspector shall report as Deficient deficiencies in:
(A) performance of heating elements; and
(B) condition of conductors; and
(3) Requirements for gas units. The inspector shall report as Deficient:
(A) gas leaks;
(B) flame impingement, uplifting flame, improper flame color, or excessive scale build-up;
(C) the absence of a gas shut-off valve within six feet of the appliance;
(D) the absence of a gas appliance connector or one that exceeds six feet in length;
(E) gas appliance connectors that are concealed within or extended through walls, floors, partitions, ceilings or appliance housings;
(F) deficiencies in:
(i) combustion and dilution air;
(ii) gas shut-off valves;
(iii) access to a gas shutoff valves that prohibit full operation;
(iv) gas appliance connector materials; and
(v) vent pipe, draft hood, draft, proximity to combustibles, and vent termination point and clearances.
(c) Hydro-massage therapy equipment
(1) The inspector shall report as Deficient:
(A) inoperative units;
(B) the presence of active leaks;
(C) deficiencies in components and performance;
(D) missing and damaged components;
(E) the absence of an opening that would allow access to equipment for inspection, service, repair or replacement without removing permanent construction or building finish; and
(F) the absence or failure of operation of ground-fault circuit interrupter protection devices; and
(2) The inspector is not required to determine the adequacy of self-draining features of circulation systems.
TREC Standards of Practice Appliances
(a) General provisions
The inspector is not required to:
(1) operate or determine the condition of other auxiliary components of inspected items;
(2) test for microwave oven radiation leaks;
(3) inspect self-cleaning functions;
(4) disassemble appliances;
(5) determine the adequacy of venting systems; or
(6) determine proper routing and lengths of duct systems.
(b) Dishwashers
The inspector shall report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting;
(3) rusted, missing or damaged components;
(4) the presence of active water leaks; and
(5) the absence of backflow prevention.
(c) Food waste disposers
The inspector shall report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting;
3) missing or damaged components; and
(4) the presence of active water leaks.
(d) Range hoods and exhaust systems
The inspector shall report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting;
(3) missing or damaged components;
(4) ducts that do not terminate outside the building, if the unit is not of a re-circulating type or configuration; and
(5) improper duct material.
(e) Electric or gas ranges, cooktops, and ovens
The inspector shall report as Deficient:
(1) inoperative units;
(2) missing or damaged components;
(3) combustible material within thirty inches above the cook top burners;
(4) absence of an anti-tip device, if applicable;
(5) gas leaks;
(6) the absence of a gas shutoff valve within six feet of the appliance;
(7) the absence of a gas appliance connector or one that exceeds six feet in length;
(8) gas appliance connectors that are concealed within or extended through walls, floors, partitions, ceilings or appliance housings; and
(9) deficiencies in:
(A) thermostat accuracy (within 25 degrees at a setting of 350° F);
(B) mounting and performance;
(C) gas shut-off valves;
(D) access to a gas shutoff valves that prohibits full operation; and
(E) gas appliance connector materials.
(f) Microwave ovens
The inspector shall inspect built-in units and report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting; and
(3) missing or damaged components.
(g) Mechanical exhaust systems and bathroom heaters
The inspector shall report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting;
(3) missing or damaged components;
(4) ducts that do not terminate outside the building; and
(5) a gas heater that is not vented to the exterior of the building unless the unit is listed as an unvented type.
(h) Garage door operators
The inspector shall report as Deficient:
(1) inoperative units;
(2) deficiencies in performance or mounting;
(3) missing or damaged components;
(4) installed photoelectric sensors located more than six inches above the garage floor; and
(5) door locks or side ropes that have not been removed or disabled.
(i) Dryer exhaust systems
The inspector shall report as Deficient:
(1) missing or damaged components;
(2) the absence of a dryer exhaust system when provisions are present for a dryer;
(3) ducts that do not terminate to the outside of the building;
(4) screened terminations; and
(5) ducts that are not made of metal with a smooth interior finish.
TREC Standards of Practice Optional Systems
(a) An inspector is not required to inspect the components or systems described under this section.
(b) If an inspector agrees to inspect a component or system described under this section, the general provisions under §535.227 of this title and the provisions and requirements of this section applicable to that component or system apply.
(c) Landscape irrigation (sprinkler) systems
(1) The inspector shall:
(A) manually operate all zones or stations on the system through the controller;
(B) report as Deficient:
(i) the absence of a rain or moisture sensor,
(ii) inoperative zone valves;
(iii) surface water leaks;
(iv) the absence of a backflow prevention device;
(v) the absence of shut-off valves between the water meter and backflow device;
(vi) deficiencies in the performance and mounting of the controller;
(vii) missing or damaged components; and
(viii) deficiencies in the performance of the water emission devices; such as, sprayer heads, rotary sprinkler heads, bubblers or drip lines.
(2) The inspector is not required to inspect:
(A) for effective coverage of the irrigation system;
(B) the automatic function of the controller;
(C) the effectiveness of the sensors; such as, rain, moisture, wind, flow or freeze sensors; or
(D) sizing and effectiveness of backflow prevention device.
(d) Swimming pools, spas, hot tubs, and equipment
(1) The inspector shall:
(A) report the type of construction;
(B) report as Deficient:
(i) the presence of a single blockable main drain (potential entrapment hazard);
(ii) a pump motor, blower, or other electrical equipment that lacks bonding;
(iii) the absence of or deficiencies in safety barriers;
(iv) water leaks in above-ground pipes and equipment;
(v) the absence or failure in performance of ground-fault circuit interrupter protection devices; and
(vi) deficiencies in:
(I) surfaces;
(II) tiles, coping, and decks;
(III) slides, steps, diving boards, handrails, and other equipment;
(IV) drains, skimmers, and valves;
(V) filters, gauges, pumps, motors, controls, and sweeps;
(VI) lighting fixtures; and
(VII) the pool heater that these standards of practice require to be reported for the heating system.
(2) The inspector is not required to:
(A) disassemble filters or dismantle or otherwise open any components or lines;
(B) operate valves;
(C) uncover or excavate any lines or concealed components of the system;
(D) fill the pool, spa, or hot tub with water;
(E) inspect any system that has been winterized, shut down, or otherwise secured;
(F) determine the presence of sub-surface water tables;
(G) determine the effectiveness of entrapment covers;
(H) determine the presence of pool shell or sub-surface leaks; or
(I) inspect ancillary equipment such as computer controls, covers, chlorinators or other chemical dispensers, or water ionization devices or conditioners other than required by this section.
(e) Outbuildings
(1) The inspector shall report as Deficient the absence or failure in performance of ground-fault circuit interrupter protection devices in grade-level portions of unfinished accessory buildings used for storage or work areas, boathouses, and boat hoists; and
(2) The inspector shall report as Deficient deficiencies in the structural, electrical, plumbing, heating, ventilation, and cooling systems that these standards of practice require to be reported for the principal building.
(f) Private water wells
(1) The inspector shall:
(A) operate at least two fixtures simultaneously;
(B) recommend or arrange to have performed coliform testing;
(C) report:
(i) the type of pump and storage equipment;
(ii) the proximity of any known septic system;
(D) report as Deficient deficiencies in:
(i) water pressure and flow and performance of pressure switches;
(ii) the condition of accessible equipment and components; and
(iii) the well head, including improper site drainage and clearances.
(2) The inspector is not required to:
(A) open, uncover, or remove the pump, heads, screens, lines, or other components of the system;
(B) determine the reliability of the water supply or source; or
(C) locate or verify underground water leaks.
(g) Private sewage disposal (septic) systems
(1) The inspector shall:
(A) report:
(i) the type of system;
(ii) the location of the drain or distribution field;
(iii) the proximity of any known water wells, underground cisterns, water supply lines, bodies of water, sharp slopes or breaks, easement lines, property lines, soil absorption systems, swimming pools, or sprinkler systems;
(B) report as Deficient:
(i) visual or olfactory evidence of effluent seepage or flow at the surface of the ground;
(ii) inoperative aerators or dosing pumps; and
(iii) deficiencies in:
(I) accessible components;
(II) functional flow;
(III) site drainage and clearances around or adjacent to the system; and
(IV) the aerobic discharge system.
(2) The inspector is not required to:
(A) excavate or uncover the system or its components;
(B) determine the size, adequacy, or efficiency of the system; or
(C) determine the type of construction used.
Deck Inspection – General Information
A Deck Inspection is a fee-for-service inspection that is separate from and more thorough than inspecting a deck as part of a Home Inspection. Deck Inspections evaluate the deck according to a selected Deck Construction Guideline. US Inspect uses the American Wood Council’s “Guide to Code Acceptance,” commonly referred to as DCA6. Deck Inspections are not technically difficult, but they are detailed. You will be required to take measurements and consult tables and diagrams. Those reference materials are downloadable throughout Inspecto Libro in our data collection platform’s Deck Inspection template.
US Inspect uses DCA6 as its selected Deck Construction Guideline. The American Wood Council requests that we provide a link to DCA6 rather than post the entire document. This ensures that you will always have the most up-to-date standard. Use the link below to connect to the latest version of DCA6. You can then download it by clicking on the arrow in the upper right corner.
http://www.awc.org/pdf/codes-standards/publications/dca/AWC-DCA62015-DeckGuide-1804.pdf
Here are DCA6’s Minimum Requirements and Limitations:
Here is the final version of the American Society of Home Inspectors (ASHI) Auxiliary Standard for residential deck inspections.
Deck Inspection – Footings/Support
Footings provide the foundational support for the deck’s structure. Bear in mind that the footings are often not visible for inspection.
Table 4 in DCA6 provides guidance on required footing sizes for all posts.
This diagram, Figure 12 from DCA6, shows the features of the common footing types within the scope of the standard.
Deck Inspection – Posts/Columns
Posts and columns are the primary vertical supports of the deck. Problems here can affect the entire structure’s stability.
Table 4 in DCA6 provides the guidelines on 6 x 6 post heights based on the beam span, the joist span, and the wood species.
How a post and its beam are connected per DCA6 differs from the IRC requirements. Figure 8A shows the requirements.
Figure 8B shows additional methods that vary from what the local AHJ may approve.
Diagonal bracing is often essential for a deck’s lateral stability. DCA6’s Figure 10 details these components.
Deck Inspection – Beams/Joists
The beams and joists form the fundamental structure of the deck platform. They must be correctly sized, arranged, and connected to perform properly.
Table 3A sets the requirements for how a dimensional lumber beam must be constructed based on the desired length of the beam vs. the span of the joists being supported.
Table 3B provides the same information as Table 3A for Glue-Laminated beams.
The maximum allowable span or overhang for a joist is determined per Table 2, and is based on the joist spacing, lumber size, and wood species.
Beams built up from dimensional lumber must follow certain protocols. Figure 4 provides the guidelines.
Joists and beams must be securely connected to prevent uplift and lateral displacement. Joists must be properly supported.
DCA6 requires specific rim joist details.
Deck Inspection – Ledgers
Ledgers, or “ledger boards”, are arguably the single most critical structural component in a deck. Ledger failure is the cause of the majority of catastrophic deck collapses.
Table 5 provides critical information on the required fastener type and spacing for a ledger based on the joist span, fastener, and wood species.
Figures 19 and 20 detail the proper placement and selection of ledger fasteners.
While the ledger attachment details are not always visible, it is essential to understand the requirements. Figures 14 and 15 provide that.
DCA6 requires so-called “lateral load devices” for decks attached to the house. The installation requirements depend on the relationship of the house and deck joists. Figure 22 is for when the joists are parallel.
Figure 23 provide installation details for when the joists are perpendicular.
Deck Inspection – Boards and Surface
Deck Inspection – Guardrail Assemblies
Guardrails are the most visible and often overlooked safety feature of a deck. DCA6 has a number of requirements that may be new even to an experienced home inspector.
Figure 24 in DCA6 provides a number of the basic guard requirements.
One of the significant new features for guardrail assemblies is the use of “hold-down anchors” to ensure a safe resistance to lateral forces against the guard. Figure 25 applies when attaching the guard post to an outside joist.
Figure 26 details connecting a guard post and hold-down anchor when a rim joist is involved.
Deck Inspection – Stairs
A majority of accidents and injuries in the home occur on stairs. It’s not surprising that DCA6’s treatment of deck stairways is detailed.
Table 6 sets minimum stair tread sizes for common wood species used on 2 types of stringers.
A “graspable” handrail is required on most stairs. Figures 32A and 32B show what’s needed for compliance with DCA6.
Figures 33 and 34 detail various stairway requirements including the footings needed at the base of the stairs.
Some guard details are different for stairs vs. the deck surface; some are the same. Figure 30 helps explain this.
Figure 28 shows the different requirements for “cut” vs. “solid” stringers.
This is familiar but important information from DCA6’s Figure 27.
Figure 29 shows the specific details on how treads must be secured to the stringers and the allowed spans.