Aluminium Window Shroud Shop Drawing Approval Guide
What Architects and Builders Should Check Before Aluminium Window Shrouds Are Manufactured
Aluminium window shroud shop drawings provide an important connection between architectural documentation and manufacture.
For custom aluminium window shrouds, the shop drawing process gives the project team an opportunity to confirm that the proposed manufactured component reflects the approved architectural intent before production begins.
EZ Windows manufactures custom aluminium window shrouds, architectural window shrouds, aluminium window surrounds and external window shrouds to project-specific requirements.
Depending on the project and agreed scope, shop drawings can communicate critical information including:
- Overall dimensions
- Internal opening dimensions
- Projection
- Face width
- Three-sided or four-sided configuration
- Welded or modular construction
- Returns
- Corner configuration
- Relevant fixing features
- Finish
- Product reference
For projects containing numerous repeated shrouds, a carefully reviewed shop drawing package can help establish a clear manufacturing reference before production.
It is important, however, to understand what shop drawing approval means.
Approval of a manufacturer’s shop drawing should confirm the relevant manufacturing information. It should not automatically transfer architectural, engineering, waterproofing, structural, regulatory or certification responsibility to the manufacturer.
EZ Windows manufactures according to approved project information within its agreed scope.
Why Shop Drawings Matter
Custom shrouds are manufactured specifically for each project.
Unlike an off-the-shelf product, a custom window surround may depend on multiple coordinated dimensions.
A relatively small misunderstanding can affect:
- Fit
- Alignment
- Projection
- Appearance
- Window clearance
- Façade relationships
- Installation
- Repeated units
If the same incorrect configuration is repeated across 30, 50 or 100 openings, the consequences can multiply quickly.
Shop drawing review gives the relevant parties an opportunity to identify inconsistencies before manufacture.
Architectural Drawings vs Shop Drawings
Architectural drawings and shop drawings perform different roles.
Architectural Drawings
Architectural documentation establishes the design intent.
It may communicate:
- Building form
- Window location
- Shroud appearance
- Overall dimensions
- Façade relationships
- Materials
- Colours
- Design details
Shop Drawings
Shop drawings translate relevant approved project information into a format suitable for manufacturing the nominated product.
They may show:
- Individual shroud dimensions
- Component geometry
- Manufacturing configuration
- Welded or modular construction
- Product references
- Relevant fabrication details
The shop drawing should not be treated as a replacement for complete architectural, structural or façade documentation.
What Should Be Checked on a Window Shroud Shop Drawing?
The review should be systematic.
Do not approve the drawing simply because the overall shape appears correct.
Review the dimensions and configuration individually.
1. Check the Shroud Reference
Every shroud type should ideally have a clear reference.
For example:
- SH01
- SH02
- SH03
- SH04
The reference should correspond with the project documentation where possible.
This becomes particularly important where multiple:
- Window sizes
- Elevations
- Colours
- Projections
- Configurations
exist on one project.
2. Check the Quantity
Confirm how many units of each shroud type are required.
Do not assume quantity purely from drawing repetition.
Cross-check against:
- Architectural elevations
- Window schedules
- Shroud schedules
- Project scope
- Builder’s order
Quantity discrepancies should be resolved before production.
3. Check the Window Reference
Where possible, connect each shroud to the relevant window.
For example:
SH04 → Window W17
This can help reduce confusion where different window dimensions appear similar.
4. Check the Internal Opening Width
The internal opening is critical.
It needs to accommodate the relevant window and approved clearance.
Check:
- Window overall width
- Shroud internal width
- Specified clearance
- Relevant projecting window components
Do not automatically assume the shroud internal opening should equal the nominal window size.
5. Check the Internal Opening Height
Apply the same process vertically.
Verify:
- Window height
- Required top clearance
- Required bottom clearance
- Sill/interface condition
- Relevant fixing components
The drawing should reflect the approved project relationship.
6. Check Window-to-Shroud Clearance
As a general EZ Windows design consideration, approximately 10 mm clearance between the window size and the inside of the shroud may be appropriate in some applications.
However, this must not be applied blindly.
The project team should confirm the actual approved clearance based on:
- Window dimensions
- Fixing lugs
- Installation tolerance
- Shroud tolerance
- Building tolerance
- Required interface
- Project-specific detailing
If fixing lugs or other items extend beyond the nominal window frame, they must be taken into account.
7. Check the Overall Shroud Width
Confirm the total external dimension.
This should reflect:
internal opening + applicable face widths
Where the shroud is asymmetrical, check both sides individually.
8. Check the Overall Shroud Height
Confirm the total height and ensure it matches the intended architectural proportions.
This is particularly important where:
- Top and bottom face widths differ
- The shroud is three-sided
- A sill condition differs from the head condition
9. Check Projection
Projection has major architectural significance.
Confirm how far the shroud projects from the relevant reference plane.
Do not approve a drawing where the projection dimension is ambiguous.
Differences in projection can materially affect:
- Façade depth
- Shadow
- Appearance
- Fixing
- Handling
- Installation
10. Check Face Width
Verify each visible face dimension.
If the design intends equal face widths, confirm they are actually equal.
If it intentionally uses different widths, ensure the drawing reflects the intended asymmetry.
11. Check Three-Sided vs Four-Sided Configuration
Confirm whether the product is:
- Three-sided
- Four-sided
- Another project-specific configuration
This should never be assumed from the window opening alone.
12. Check Welded vs Modular Construction
The drawing should clearly identify the intended manufacturing configuration where relevant.
Welded
Check:
- Overall completed size
- Corner configuration
- Handling implications
- Transport implications
Modular
Check:
- Individual components
- Junction locations
- Corner configuration
- Assembly arrangement
Where architectural appearance at the junction matters, review the relevant detail carefully.
13. Check Corner Configuration
Corners can significantly affect appearance.
Confirm whether the approved configuration is:
- Welded
- Modular
- Square
- Radius
- Rounded
- Project-specific
Do not assume that a generic rectangular outline fully communicates the corner requirement.
14. Check Rear Returns
Where rear returns are required, verify:
- Return depth
- Direction
- Location
- Relationship to façade
A missing return can affect both appearance and installation coordination.
15. Check Any Fixing Flange
Where the manufactured product incorporates a nominated flange or fixing feature, confirm its:
- Position
- Orientation
- Size where relevant
- Relationship to surrounding construction
The presence of a manufactured fixing feature does not itself constitute structural engineering approval.
16. Check the Substrate Interface
The project team should know what the shroud is intended to connect to.
Possible conditions include:
- Timber framing
- Steel framing
- Masonry
- Concrete
- Structural steel
- Façade framing
- Other project-specific substrates
The shop drawing should be reviewed together with the project fixing design where applicable.
17. Check the Finish
Colour errors are expensive and highly visible.
Confirm:
- Powder-coat colour
- Finish
- Relevant coating system
- Any project code
- Whether all matching shrouds use the same nominated finish
Do not rely on descriptions such as:
“black”
or
“charcoal”.
Use the project’s nominated finish information.
18. Check Different Colours on the Same Project
Some buildings intentionally use multiple shroud colours.
For example:
- SH01 — Colour A
- SH02 — Colour A
- SH03 — Colour B
- SH04 — Colour C
Colour should therefore be tied to the correct shroud reference rather than treated as one general project note.
19. Check Orientation Where Relevant
Some shroud geometries may appear similar when rotated.
Where orientation matters, ensure the drawing or reference clearly establishes:
- Top
- Bottom
- Left
- Right
- Exterior face
- Relevant elevation
This becomes particularly important with asymmetrical designs.
20. Check Falls Where Specified
Where the approved architectural design incorporates a fall, confirm the drawing accurately communicates it.
Check:
- Direction
- Relevant surface
- Relationship to window
- Relationship to façade
Falls and drainage requirements should be established by the responsible project professionals.
EZ Windows manufactures to the approved geometry within its scope.
21. Review the Shroud in Section
Elevation alone can hide important information.
A section can reveal:
- Projection
- Window clearance
- Returns
- Façade relationship
- Fixing interface
- Cladding relationship
For complicated shrouds, both elevation and section information may be valuable.
22. Review the Shroud Against the Architectural Elevation
The shop drawing should not be reviewed in isolation.
Compare it with the architectural elevation.
Ask:
- Does the proportion look correct?
- Is the projection consistent?
- Are the face widths correct?
- Is the shroud aligned with adjacent elements?
- Is the intended repetition maintained?
This protects the original design intent.
23. Compare Against the Window Schedule
The window schedule can be one of the most important cross-checks.
Confirm:
window reference → window dimension → shroud internal opening
Discrepancies between the elevation and window schedule should be resolved by the appropriate project party rather than guessed by the manufacturer.
24. Check Site Dimensions Where Required
Project documentation may not always reflect the final constructed opening exactly.
Depending on the project, responsibility may exist for verifying site dimensions before manufacture.
The agreed process should clearly identify:
- Who measures
- What dimensions are being verified
- When verification occurs
- Who authorises manufacture
EZ Windows should not be assumed to have verified site conditions unless site measurement is specifically included within our agreed scope.
25. Do Not Mix Nominal and Actual Dimensions
A frequent source of confusion is treating nominal dimensions as actual fabricated dimensions.
For example, terms such as:
“1800 window”
may not tell the manufacturer enough.
Use clearly documented dimensions and references.
Where there is any inconsistency, it should be resolved before approval.
26. Check Repeated Shroud Types Carefully
Where one type repeats many times, the temptation is to review it quickly.
The opposite approach is better.
The more often a detail repeats, the more important it becomes to confirm it accurately.
If SH01 appears 60 times, one incorrect approved dimension can potentially affect 60 units.
27. Use a Master Shroud Schedule
Larger projects benefit from a consolidated schedule.
For example:
| Shroud | Window | Qty | Internal Size | Projection | Type | Finish |
|---|---|---|---|---|---|---|
| SH01 | W01 | 24 | Approved dimensions | Approved | Welded | Colour A |
| SH02 | W07 | 12 | Approved dimensions | Approved | Modular | Colour A |
| SH03 | W12 | 8 | Approved dimensions | Approved | Welded | Colour B |
A clear schedule can provide a valuable cross-reference during:
- Approval
- Manufacturing
- Packaging
- Delivery
- Installation
28. Record Revisions Clearly
Shop drawings often change during the project.
Always confirm the current revision.
For example:
- Rev A — Initial issue
- Rev B — Window size changed
- Rev C — Projection updated
- Rev D — Approved for manufacture
Project teams should avoid approving or manufacturing from superseded information.
29. Mark Changes Clearly
Where a revision is issued, identify what changed.
Typical changes include:
- Dimensions
- Projection
- Quantity
- Finish
- Configuration
- Window reference
Clear revision control reduces the likelihood of parties reviewing different versions.
30. Avoid Verbal Changes
A verbal instruction such as:
“Just make them 20 mm deeper”
can easily create uncertainty.
Changes affecting manufacture should be documented through the project’s agreed approval process.
This creates a clear record of what was authorised.
31. What Does “Approved for Manufacture” Mean?
Approval should establish that the relevant project party has reviewed the manufacturing information and authorises production according to the approved information.
The exact approval process depends on the project contract and project team.
Approval may involve:
- Architect
- Builder
- Designer
- Developer
- Other authorised party
EZ Windows should receive clear manufacturing authority before commencing production where approval is required.
32. Approval Does Not Transfer Design Responsibility
This distinction is critical.
A manufacturer drawing information provided by others does not automatically become responsible for:
- Original architectural design
- Structural adequacy
- Engineering
- Waterproofing
- Building-envelope performance
- Regulatory compliance
- Certification
- Suitability of the specified geometry
These remain with the appropriately appointed responsible parties unless a separate professional scope explicitly states otherwise.
33. Architect Review
Architect review should focus particularly on whether the proposed product maintains the intended:
- Geometry
- Proportion
- Projection
- Alignment
- Appearance
- Finish
- Relationship with the façade
This is how shop drawing review helps protect architectural intent.
34. Builder Review
The builder may need to consider:
- Site dimensions
- Construction sequence
- Substrate readiness
- Access
- Installation
- Programme
- Coordination with other trades
The shop drawing process can therefore reveal issues that extend beyond fabrication.
35. Engineer Review Where Required
Where relevant engineering applies, the responsible engineer should review the information that falls within their professional scope.
EZ Windows should not be interpreted as providing structural certification simply by producing the manufacturing drawing.
36. Coordinate Waterproofing Separately
Shop drawings may show the physical location of the shroud relative to the façade.
That does not mean the manufacturer has designed the complete waterproofing system.
The responsible project team should separately coordinate:
- Flashings
- Membranes
- Sealants
- Drainage
- Window installation
- Cladding
- Cavity systems
37. CAD and BIM Coordination
Where CAD or BIM/Revit models are used, compare the final shroud shop drawing against the relevant approved model or project documentation.
This can assist with detecting:
- Projection discrepancies
- Dimensional differences
- Incorrect window references
- Alignment problems
Digital coordination is particularly useful on buildings with multiple repeating façade modules.
38. Shop Drawings and Tender Documentation
Good shroud documentation should ideally begin before the project reaches manufacturing.
Clear tender documentation can help establish:
- Product scope
- Quantity
- Geometry
- Finish
- Construction type
Then the shop drawings refine the information required for manufacture.
This creates a more orderly path from:
architectural design → tender → procurement → shop drawings → approval → manufacture.
39. Common Shop Drawing Approval Mistakes
Approving Without Checking Dimensions
The drawing may look correct visually while containing an incorrect measurement.
Checking Overall Size but Not Internal Opening
Both matter.
The external size may be correct while the opening does not suit the window.
Ignoring Projection
A projection change can materially affect façade appearance.
Assuming the Window Schedule Is Correct
Cross-check relevant project documents.
Where they conflict, seek clarification.
Approving the Wrong Revision
Always check revision status.
Forgetting Colour
Confirm the nominated powder-coat finish.
Assuming the Manufacturer Has Measured the Site
Unless explicitly included in the agreed scope, this should not be assumed.
Treating Shop Drawing Approval as Engineering Certification
It is not.
40. Shop Drawing Approval Checklist
Before approving an EZ Windows aluminium window shroud drawing, confirm:
- Correct project
- Correct drawing revision
- Correct shroud reference
- Correct window reference
- Correct quantity
- Internal width confirmed
- Internal height confirmed
- Window clearance confirmed
- Overall width confirmed
- Overall height confirmed
- Projection confirmed
- Face width confirmed
- Three-sided/four-sided configuration confirmed
- Welded/modular construction confirmed
- Corner configuration confirmed
- Rear returns confirmed where relevant
- Fixing features reviewed where relevant
- Orientation confirmed
- Finish confirmed
- Falls confirmed where applicable
- Architectural elevation cross-checked
- Window schedule cross-checked
- Site dimensions verified by responsible party where required
- Fixing/engineering requirements separately resolved where applicable
- Waterproofing interface separately resolved
- Correct authorised party has approved manufacture
Sample Approval Workflow
A practical project process may look like:
Step 1 — Architectural Information
Project documentation is provided to EZ Windows.
Step 2 — Scope Review
Required shroud types, quantities and available information are reviewed.
Step 3 — Clarifications
Missing or conflicting information is referred back to the relevant project party.
Step 4 — Shop Drawings
Applicable drawings are prepared according to the agreed project process.
Step 5 — Project Review
Architect, builder or authorised party reviews the information.
Step 6 — Revisions
Required approved changes are documented.
Step 7 — Final Approval
The authorised party confirms the relevant shop drawings for manufacture.
Step 8 — Production
EZ Windows manufactures according to the approved information and agreed scope.
Frequently Asked Questions
What information is shown on aluminium window shroud shop drawings?
Typically dimensions, internal opening, projection, face width, configuration, construction method, relevant returns, finish and other manufacturing information applicable to the product.
Should the architect approve shroud shop drawings?
That depends on the project’s contractual approval process. Architects commonly review product shop drawings where maintaining architectural intent forms part of their scope.
Can the builder approve the drawings?
Where the builder is authorised to do so under the project process, yes.
Should shop drawings be approved before manufacture?
Where shop drawing approval forms part of the project process, manufacture should proceed only after the required information has been approved.
Does EZ Windows verify all site dimensions?
Not unless site measurement or verification has specifically been included within the agreed project scope.
Does shop drawing approval make EZ Windows responsible for engineering?
No. EZ Windows remains the product manufacturer. Project engineering remains the responsibility of the appropriately appointed engineer unless a separate professional engineering scope expressly states otherwise.
What happens if architectural documents conflict?
The discrepancy should be referred to the relevant project party for clarification. EZ Windows should not be expected to determine architectural intent where the approved documentation conflicts.
Can shop drawings be changed after approval?
Changes may be possible depending on production status, but revised information needs to follow the agreed project change process. Changes after manufacture has commenced can affect cost and programme.
EZ Windows Manufacturing Responsibility
EZ Windows manufactures aluminium window shrouds according to the approved information supplied within its agreed scope.
Shop drawings prepared by EZ Windows are intended to communicate applicable manufacturing information.
Unless expressly included under a separate professional engagement, EZ Windows does not assume responsibility for:
- Architectural design
- Structural engineering
- Façade engineering
- Waterproofing design
- Fixing engineering
- Building certification
- Regulatory compliance
- Verification of site conditions
- Suitability of the specified product for the overall building design
Those responsibilities remain with the appropriately appointed project professionals and responsible parties.
Warranty
Product warranty is subject to the applicable EZ Windows terms and conditions.
Finish coverage depends on matters including:
- Powder-coating system
- Nominated finish
- Environmental exposure
- Installation
- Maintenance
Refer to the Aluminium Window Shroud Warranty page for full details.
From Architectural Intent to Manufacture
A successful aluminium window shroud package depends on more than accurate fabrication.
The information needs to remain clear throughout the project:
Architectural concept
↓
Window and shroud schedules
↓
Specification
↓
Tender / procurement
↓
Shop drawings
↓
Review and approval
↓
Manufacture
↓
Installation
When each stage uses clearly controlled information, it becomes considerably easier to preserve the architect’s intended dimensions, geometry and appearance through to the finished product.
Related Resources
Aluminium Window Shrouds | Custom Architectural Window Shrouds Australia
Modular Aluminium Window Shrouds
Welded Aluminium Window Shrouds
Custom Aluminium Window Shrouds
Commercial Aluminium Window Shrouds
Residential Aluminium Window Shrouds
Aluminium Window Shroud Technical Data
Aluminium Window Shroud Fixing Details
Aluminium Window Shroud Specifications
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- Relevant sections
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- Finish requirements
We can review the manufacturing scope and identify the information required to progress the shroud package.
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