LA Roofing Contractor key terms

A sheet material installed over the roof deck beneath the primary covering to provide a secondary weather barrier and protect the deck before and during roof installation.

A self-adhering waterproof membrane installed at eaves and in valleys to stop water that backs up behind ice dams or blows under roof coverings.

Metal or membrane pieces installed at roof intersections, walls, and penetrations to direct water away from seams and joints and prevent leaks.

Small L-shaped metal pieces installed in steps along sidewalls and chimneys, woven with each shingle course so water sheds onto the course below.

Metal attached to a wall, chimney, or curb that overlaps the top edge of base flashing, keeping water from entering behind the flashing.

A metal strip at eaves and gables that sheds water clear of the fascia and helps support and protect the edge of the roof covering.

The structural surface, usually plywood or oriented strand board panels, fastened to framing to support underlayment, roofing materials, and loads.

A roof covering made of asphalt-saturated felt or fiberglass mat coated with mineral granules, installed in overlapping horizontal courses.

Metal roof panels joined by raised interlocking seams and attached with concealed clips, allowing thermal movement and shedding water on shallow slopes.

A thermoplastic polyolefin single-ply sheet used on low-slope roofs, with seams joined by hot-air welding to form a watertight surface.

The internal angle where two roof planes meet, which concentrates water flow and requires extra underlayment and flashing to prevent leaks.

A vent installed along the peak of a roof that allows hot, moist air to escape from the attic space.

The vertical rise of a roof over a horizontal run, expressed in inches per foot, which affects material choice and drainage.

Upward aerodynamic pressure on a roof that tries to lift coverings and decking, resisted by fasteners, adhesives, and edge metal.

A nail, screw, or anchor used to attach roof components; its type, length, and spacing control the roof's resistance to wind uplift.

A fire-resistance classification indicating a roof covering provides the highest listed protection against fire spreading from an external source.

A classification from standardized testing that shows how well a roof covering resists fire spread from outside the building.

A model building code adopted in Louisiana for one- and two-family dwellings that sets requirements for roof materials, fastening, ventilation, and fire performance.

State and local changes made to model building codes when Louisiana jurisdictions adopt them, which can add or tighten roofing requirements.

A drawing viewed from above that shows the roof outline, ridges, valleys, penetrations, and dimensions in a horizontal plane.

An orthographic drawing of a building face that shows heights, roof slopes, and exterior features as seen from the side.

A cutaway drawing showing the layered roof assembly at a specific location, such as an eave or valley, drawn at a large scale.

A written project document that describes required roofing materials, installation methods, and quality standards, supplementing the construction drawings and contract.

A statutory claim filed against private property by a contractor or supplier to secure payment for labor or materials, subject to strict notice and deadline rules.

A signed statement giving up lien rights for specified work or materials, commonly exchanged for partial or final payment on a project.

A percentage of each progress payment, often five to ten percent, withheld by the owner until the project reaches substantial completion.

A written agreement signed by the owner and contractor that changes the scope, price, or schedule of the original construction contract.

The stage when work is sufficiently complete for its intended use, starting warranty periods and affecting release of retainage.

A written list of minor incomplete or defective items found during final inspection that the contractor must correct before project closeout.

A surety bond that protects the owner if the contractor fails to complete the work according to the contract terms.

A contract provision requiring one party to compensate the other for specified losses or claims, often arising from negligence or unsafe work.

A credential issued by the Louisiana State Licensing Board for Contractors authorizing a business to bid and perform roofing work above statutory thresholds.

Equipment or systems such as guardrails, nets, or personal arrest gear required to protect workers from falls at elevated work areas.

A harness, connecting lanyard, and anchor combination that stops a worker's fall and limits the forces on the body.

A manufactured or engineered attachment point secured to the roof structure for connecting a personal fall arrest system or lifeline.

A barrier with top rail, midrail, and toe board placed around an elevated work area to prevent workers from falling.

A rope or wire barrier set back from a roof edge to mark a work area, used with a safety monitor on low-slope roofs.

A marked area where only authorized workers may enter, used with a safety monitor to limit exposure near unprotected roof edges.

Correct selection, setup, and use of ladders, including maintaining the four-to-one angle for extension ladders and securing the top.

An OSHA-required program of container labels, safety data sheets, and training that informs workers about chemical hazards on the job.