Flashings & Accessories · Walls
Wall Flashings for Sandwich Panel Walls
Wall Flashings are the folded metal trims that finish a sandwich panel wall at its corners, window and door openings, base and parapet, closing exposed panel edges and directing water away from joints.
- Item data
- Confirmed per project
01 / Overview
Quick answer
Wall flashings are formed metal trims fitted at the edges of a sandwich panel wall: external and internal corners, window and door heads, sills and jambs, the wall base and the parapet or wall head. They cover cut panel edges, shed rainwater outward and give the façade clean lines. Jawdah confirms wall flashing shapes and sizes per project.
Overview
The job of a wall flashing
Every panel wall has more edges than most people expect: two kinds of corner, the head, sill and sides of each opening, the base where the wall meets the slab, and the top where it meets the roof or a parapet. Each edge needs its own trim, and each trim has a job beyond appearance.
Jawdah groups wall flashings within its Flashings & Accessories range and treats flashing as part of the panel quotation. The individual shapes, sizes and materials are not yet published and are confirmed per project, so this page explains what each wall flashing does and how to specify it.
Where a panel is cut, its insulation core is exposed and its joint geometry is interrupted. A wall flashing covers that edge so sun, rain and dust cannot reach the core, and it overlaps the panel face so water running down the wall is carried past the joint instead of into it.
Flashings also define how a façade reads. Crisp corners and aligned window trims make a panel building look deliberate; uneven or site-bent trims make even a good panel wall look unfinished.
Types
Wall flashing positions and their functions
The table lists the usual wall flashing positions on a panel building and what each one does. These are general categories; the exact profiles supplied by Jawdah are confirmed against the project drawings.
| Position | Main function | Jawdah item data |
|---|---|---|
| External corner | Closes the outside corner and both panel edges | Confirmed per project |
| Internal corner | Closes an inside corner, often from the room side | Confirmed per project |
| Window or door head | Sheds water away from the top of the opening | Confirmed per project |
| Sill | Carries water out past the panel face below the opening | Confirmed per project |
| Jamb | Closes the side edges of an opening | Confirmed per project |
| Base trim | Protects the bottom edge and sheds water off the slab line | Confirmed per project |
| Parapet capping or wall head | Covers the top edge and joins wall to roof | Confirmed per project |
How it works
Shingle principle: upper over lower
Wall flashings work like roof tiles: every upper piece overlaps the piece below it, so water always flows over a lap and never behind it. A head flashing therefore goes over the panel above the opening, a sill projects beyond the panel face below, and a base trim kicks water out beyond the slab edge. Where an overlap points the wrong way, sealant becomes the only defence, and sealant ages.
02 / Performance
Specifying wall flashings
Mark every edge type on the elevations and give each a reference. For each reference, draw the trim against the actual panel joint, whether it is a through-fixed face such as the Semi-Corrugated Wall Sandwich Panel or a concealed-fix face such as the Secret Fix Wall Sandwich Panel, because the joint shape changes how the trim seats and is fixed.
List running lengths per reference in the BOQ and note any opening types that repeat, so the number of distinct shapes stays low.
03 / Applications
Fitting order on site
Fix the base trim before the first panel goes up, then fit corner trims as each elevation is completed and opening trims after frames are set. Seal behind trims where the detail requires it, fix through the trim into a solid backing, and keep fastener lines straight. The Jawdah Installation Manual, available in hard copy, covers the panel side of these junctions.
Selection pitfalls
Wall flashing errors to avoid
Most wall leaks on panel buildings start at an opening or the base.
- Sills that stop flush with the panel face instead of projecting past it
- Head flashings tucked behind the panel above instead of over it
- No base trim, leaving the core edge open at slab level
- Corner trims in a different colour from the panels
- Trims designed without checking the panel joint type
04 / Technical
Closer look
Detailed product imagery is being prepared.
In preparationMaterials
Matching flashings to Jawdah wall panels
Jawdah wall panels are faced with PPGI, aluminium, stainless steel or galvanized iron with polyester or PVDF coating, and their standard colour is Cloud White. Flashings normally follow the material and colour of the panel face they meet, so state that matching requirement and ask Jawdah to confirm the flashing material and colour for your project.
On cold room walls, internal corner and base trims are often chosen for easy cleaning, with no ledges where dirt or water can settle.
Key facts
- Wall Flashings are part of the Jawdah Flashings & Accessories range for sandwich panel systems.
- Wall flashings close sandwich panel walls at corners, openings, the base and the parapet.
- Jawdah confirms wall flashing shapes, sizes and materials per project; they are not published.
- Wall flashings work on the shingle principle: each upper piece overlaps the piece below.
- Jawdah lists flashing among the factors that determine a sandwich panel quotation.
RFQ / BOQ checklist
- Elevations with every wall edge type referenced
- Running length per flashing reference
- Wall panel type and joint (through-fixed or concealed-fix)
- Flashing material and colour matched to panels
- Opening types: windows, doors, louvres
- Base and parapet details
- Delivery with panels or separately
05 / Resources
Further chapters in preparation
Technical resources
Technical documentation is being prepared for this product.
Projects using this product
Project references are being prepared.
Compatible systems
System relationships for this product are being prepared.
Our technical team can share the current information on request.Ask the technical team
06 / FAQ
Frequently asked questions
Usually external and internal corner trims, head, sill and jamb flashings at openings, a base trim and a parapet capping or wall-head flashing.
Not yet. Shapes, girths and thicknesses are confirmed by the Jawdah team against the project drawings.
It protects the bottom edge of the panel, including the insulation core, and throws water clear of the slab joint instead of letting it run behind the panel.
Normally yes. Jawdah panels are standard Cloud White with other colours on request, so state the colour per flashing in the RFQ.
The trim shapes must suit the panel joint, so flashings for concealed-fix walls are detailed against that joint rather than copied from through-fixed walls.
Send elevations with edge references, running lengths, colour and material, together with the wall panel RFQ.
Next step
Get wall flashings quoted with your panels
Send your elevations and edge details. The Jawdah team will confirm the wall flashing shapes, colours and quantities with the panel package.