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 Expansion joint covers bridge gaps in a structure that are designed to allow for movement (seismic, thermal, or structural deflection) while providing a finished, durable, and safe transition between surfaces. 

Joint width is based on the anticipated movement range (expansion and contraction) and the building’s design criteria. Refer to the structural drawings or consult the structural engineer or architect for joint opening and expected movement data. 

 Primarily thermal expansion/contraction, seismic movement, wind sway, live load deflection, and settlement. Each project will prioritize different types based on building use and location. 

Most systems are designed for field cutting (especially aluminum extrusions), but it’s essential to follow manufacturer recommendations for cutting tools, clearances, and finish protection. 

 Seismic joints allow for large, multi-directional movement during earthquakes, while thermal joints are smaller and mainly accommodate temperature-related expansion and contraction. 

• Joint width and depth are per spec
   
• Substrate is level and structurally sound
   
• Anchor surfaces are clean and dry
   
• Field dimensions match approved shop drawings
   
• Backer material (if required) is in place

Yes, if the joint penetrates a fire-rated wall or floor. The fire barrier must match the fire rating of the assembly and be properly installed in combination with the cover system. 

 No. Installing joint covers on green concrete can compromise anchorage. Allow curing and drying as per project specifications (typically 28 days for full cure). 

 Typically with mechanical fasteners (concrete screws, expansion anchors, or lag bolts). Use anchors as specified in manufacturer guidelines and ensure proper embedment. 

Yes, if the joint penetrates a fire-rated wall or floor. The fire barrier must match the fire rating of the assembly and be properly installed in combination with the cover system. 

• Improper anchorage
   
• Incorrect joint sizing
   
• Lack of movement allowance
   
• Incompatible accessories (fire or moisture barriers)
   
• Poor substrate conditions

 Only if specified as such. ADA-compliant covers are designed to be flush or nearly flush with minimal gaps or protrusions for wheelchairs, walkers, and foot traffic safety. 

 Use a compatible moisture barrier or waterproofing membrane (e.g., RedLINE or foam seals with coatings), depending on the joint type and location. Ensure proper overlap and adhesion to surrounding surfaces. 

 Stop work and notify the architect, GC, or manufacturer rep. Field conditions must be reconciled with revised shop drawings or recommendations to avoid system failure. 

 Ranges vary:

• Foam seals: ±25% to ±50%
   
• Metal covers: ±25%
   
• Seismic bellows: up to ±100%
  Confirm specs for the exact model being used.

Yes, but the system must be compatible with flooring finishes. Recessed or flush-mounted models are available for tile, carpet, wood, or resilient flooring. 

 Yes. Annual inspection is recommended to check for damage, anchor loosening, or debris buildup. Replace worn or damaged components as needed. 

 Yes. Floor systems must handle loads and traffic; wall and ceiling covers are lighter, often aesthetic, and sometimes flexible. Always match the system to the location and use. 

•  Approved submittals and shop drawings
   
• Installation instructions
   
• Warranty certificate
   
• Daily work logs and photos of completed installs
   
• Any field modification approvals

•  Measure total linear footage per location (wall, floor, roof, etc.)
   
• Identify joint widths and movement requirements
   
• Note special conditions (fire rating, waterproofing, ADA compliance)
   
• Include accessories (fire/moisture barriers, blockouts, backer rod)

 Always contact the manufacturer’s rep or project-specific technical advisor. Joint-Tek (Encore Building Products) provides layout review, spec guidance, and on-site support for field issues. 

• Slope and Load: Determine if the joint cover system is rated for installation on sloped surfaces and designed to accommodate vehicular loads.
   
• Anchoring Detail: Check if standard anchors can be used on a slope or if modifications are needed to ensure secure anchorage.
   
• Joint Movement: Confirm the expansion/contraction characteristics of the slab and whether the cover can handle movement in both horizontal and vertical directions.
   
• Slip Resistance: Ensure the surface finish of the cover meets safety standards for traction, especially in wet or sloped environments.
   
• Manufacturer’s Recommendations: Always consult the system’s data sheet or technical rep to verify suitability for sloped installation.