Expansion joint cover manufacturers in China include aluminium extrusion makers that supply floor and wall covers, stainless steel and brass cover fabricators, rubber and elastomeric seal makers, makers of fire-rated and seismic joint systems, and flooring accessory companies that supply covers with their floor systems. An expansion joint cover is the visible part of a gap the building is designed to move across, and each route supplies a different movement range, finish and fixing under the same name.
This guide sorts the supply side into five sourcing routes so a procurement team can send one brief to the right makers and compare the answers fairly. It is not a ranking. No factory is named or scored here, and no claim is made about the movement capacity, load rating or fire performance of any cover. The structural designer, the project specification and the local authority define those requirements, and each maker must show evidence for the exact model it offers. For related products, see our guides to aluminium fabrication and stainless steel fabrication.
What should an expansion joint cover brief state?
A brief that says only “floor joint covers, aluminium, 400 metres” produces quotations that cannot be compared, because joint width, movement and use are left open. State at least the following, copied from the structural and architectural drawings and the specification.
- Joint location and drawing reference: floor, wall, ceiling or roof joints, each with its drawing reference and length.
- Joint gap and movement: the joint width and the movement the structural designer states, written as the designer writes them.
- Use and loading: pedestrian, trolley, vehicle or none, as the project states it for each location.
- Cover type: flush floor cover, raised cover, wall and ceiling cover, corner or T-junction pieces, with the detail drawing.
- Material and finish: the material the specification names, the finish and colour reference, with an approved sample.
- Insert and seal: whether the cover takes a flooring insert, a rubber seal or a fire barrier, and who supplies each.
- Fire and acoustic requirement: any rating the project names, with the standard and edition, set by the designer and the authority.
- Fixing and substrate: how the cover is fixed, the substrate it fixes to and the anchors supplied.
- Packing: how lengths and fittings are protected and marked by location, and which parts ship separately.
Five sourcing routes for expansion joint covers
1. Aluminium extrusion cover makers
Aluminium covers are extruded in standard profiles with anodised, powder-coated or plain finishes, and are common in floors and walls of offices and hotels. Ask for the profile drawing with the gap range the maker states, the finish, the fixing method and a sample length with a corner piece. This route suits repeated corridors where one profile covers many joints.
2. Stainless steel and brass cover fabricators
Stainless and brass covers are fabricated in sheet and bar for lobbies and public areas where appearance matters. Ask for the thickness, the finish description, the joint and corner details and a finished sample. See our guide to stainless steel fabrication.
3. Rubber and elastomeric seal makers
Rubber and elastomeric seals and compression seals fill joints in floors, walls and car parks. Ask for the material description, the movement range the maker states, the bonding or fixing method and a sample, and agree who supplies adhesives and primers.
4. Fire-rated and seismic joint system makers
Fire-rated and seismic joint systems combine a cover with a barrier or a moving assembly and sit behind the architectural finish. Ask for the system drawing, the components supplied, the evidence the project requires for the exact assembly and a sample section. Confirm who supplies the barrier and who installs it.
5. Flooring accessory suppliers supplying covers with floor systems
Some flooring companies supply covers and edge profiles with their floors. This puts one party in charge of the interface between floor and joint, but ask the supplier to price covers as their own lines and to name the maker of each profile. See our guide to flooring for hotels and apartments.
Sourcing this for a commercial project?
FBM Sourcing manages the entire China procurement package for overseas construction projects. We work with Developers · General Contractors · Builders · Commercial Project Owners · Interior Design & Construction Companies · FF&E Solution Providers. Send your BOQ, drawings or product schedule for review.
How to compare expansion joint cover quotations
- Profile and gap range: drawing reference and the joint width range stated on each line.
- Material and finish: material, thickness and finish named on each line, so a cheaper line is read against what it contains.
- Fittings: corners, T-junctions, end caps and transitions listed with quantities.
- Inserts and seals: whether the line includes the flooring insert, seal or barrier.
- Units of measure: price per metre or per length, and the length of one piece.
- Evidence: which test or assessment reports are offered for the exact assembly, with the date and the body that issued them.
- Exclusions and substitutions: any change of profile, material or finish the maker proposes.
A quotation that is cheaper on one line may be thinner on another. Read the descriptions side by side before reading the totals.
Samples, approval and acceptance on delivery
Approve a sample length with its fittings before bulk production, and record the approval in writing against the drawing reference. Have the contractor test the fixing on a mock-up of the joint, because gap and substrate mismatches are found on site. Keep the approved sample as the reference for the bulk order.
On delivery, check a sample of packs against the order: profile, finish, length, fittings and quantity. Note any damage or difference in writing on the day with photographs, so the maker can respond while the evidence is fresh.
What evidence to ask each route for
Evidence should be requested for the exact assembly, not for a product family. Ask for the following in writing and keep the answers with the quotation.
- Aluminium cover makers: profile drawing, alloy and finish description and a sample length with a corner.
- Stainless and brass fabricators: thickness, finish description and a finished sample.
- Seal makers: material description, movement range stated by the maker and a bonded sample.
- Fire-rated system makers: system drawing, component list and the evidence for the exact assembly.
- Flooring suppliers: the name of the profile maker, separate price lines and an installation method statement.
Specification gaps to close before quotation
A quotation cannot answer the questions below for itself. Check that the brief answers these questions before it goes out.
- What joint width and movement does the structural designer state for each location?
- What use or loading is the cover designed for at each location?
- Which material and finish does the specification name, and on which sample?
- Does the project name a fire or acoustic rating, in which standard and edition?
- Who supplies inserts, seals, barriers and anchors?
- How are lengths and fittings marked by location?
Next steps for a joint cover package
Send each maker the same brief and ask for answers in writing, line by line, with samples or documents before bulk production. FBM Sourcing manages China procurement packages for overseas projects; furniture-only packages are also run through FBM Furniture.
Questions buyers ask about expansion joint covers from China
Can two joint cover quotations be compared by price per metre alone?
No. A price per metre says nothing about the movement range, material thickness, finish or fittings. Compare profile, gap range, material, finish and included fittings on each line before comparing totals.
Who decides the movement a joint cover must accommodate?
The structural designer decides, from the building and the joint location. Put the movement in the brief and ask each maker to confirm that its profile suits it.
Should corners and end caps be quoted with the covers?
Quote corners, T-junctions and end caps on separate lines with quantities, even when one maker supplies everything, so that missing parts appear before the order and not on site.
Do joint covers need a sample before ordering?
Yes. Approve a sample length with its fittings and keep it as the reference for the bulk order.
How does FBM Sourcing support this kind of package?
We review the brief, collect comparable quotations and manage the package for the project. For suppliers you nominate, we charge a 5% commission; for products we source for you, we quote a direct price. Our own team performs one inspection after bulk production is complete and before shipment, and the client’s project team is welcome to attend.
FBM Sourcing manages the entire China procurement package for overseas construction projects. We work with Developers · General Contractors · Builders · Commercial Project Owners · Interior Design & Construction Companies · FF&E Solution Providers.
