Aluminium Window Shroud Procurement Guide
A Builder and Estimator Guide to Quoting, Comparing and Ordering Aluminium Window Shrouds
An effective aluminium window shroud procurement process starts with clear information.
For builders, estimators and procurement teams, the challenge is often not simply finding a price for an aluminium surround. The real task is making sure every quotation is based on the same dimensions, quantities, construction method, finish, delivery requirements and scope.
EZ Windows manufactures custom aluminium window shrouds, architectural window shrouds, aluminium window surrounds and external window shrouds for Australian projects.
Shrouds may be supplied in welded or modular configurations and manufactured to project-specific dimensions, projections, returns, corner arrangements and nominated finishes.
A clear procurement package can help reduce:
- Pricing ambiguity
- Missing scope
- Unpriced variations
- Incorrect quantities
- Finish discrepancies
- Freight surprises
- Shop-drawing delays
- Manufacturing misunderstandings
This guide explains the information builders and estimators should gather before requesting a quotation and the key points to check when comparing competing offers.
Important: EZ Windows manufactures products to approved project information within its agreed scope. Architectural design, engineering, fixing design, waterproofing, certification and regulatory compliance remain the responsibility of the appropriately appointed project professionals.
Why Window Shroud Procurement Needs More Than a Square-Metre Rate
Window shrouds are custom architectural components.
Pricing can be influenced by much more than overall area.
Relevant factors can include:
- Width
- Height
- Projection
- Face width
- Number of sides
- Geometry
- Quantity
- Welded or modular construction
- Corner design
- Rear returns
- Finish
- Powder-coating requirements
- Packaging
- Freight
- Site access
- Installation scope
Two shrouds with similar face area can therefore have very different manufacturing and logistics requirements.
For this reason, reliable procurement requires more detail than simply asking:
“What is your rate per metre?”
What Information Should Be Sent for Pricing?
The clearer the tender package, the more meaningful the quotation can be.
Ideally provide:
- Architectural elevations
- Window schedule
- Relevant sections
- Shroud details
- Shroud schedule
- Dimensions
- Quantities
- Projection
- Face width
- Project location
- Finish
- Required construction type
- Required programme
- Installation scope where applicable
If some information is unavailable, identify it clearly.
1. Architectural Elevations
Elevations help establish:
- Shroud locations
- Repetition
- Relationship to windows
- Overall architectural intent
- Different façade types
They are particularly useful where several similar shrouds appear throughout the building.
2. Window Schedule
The window schedule can help correlate:
- Window references
- Nominal sizes
- Locations
- Quantities
Where the shroud sits directly around the window, this becomes an important procurement document.
However, the window schedule alone may not establish the required shroud opening or clearance.
3. Relevant Sections
Sections are critical where the shroud design depends on:
- Projection
- Rear returns
- Façade interface
- Window position
- Cladding relationship
A plan or elevation alone may not communicate enough information for accurate pricing.
4. Shroud Details
Where available, provide dedicated shroud details showing:
- Internal dimensions
- Overall dimensions
- Face width
- Projection
- Returns
- Corner arrangement
- Fixing features
The more clearly the geometry is documented, the less estimating uncertainty remains.
5. Quantity
Quantity directly affects manufacturing and procurement planning.
Confirm:
- Total quantity
- Quantity by type
- Quantity by colour
- Quantity by stage or building where relevant
Avoid simply asking the manufacturer to derive all quantities from a large drawing set unless that responsibility is clearly included in the quotation process.
6. Create a Shroud Schedule
For larger projects, a simple schedule is highly effective.
For example:
| Ref | Window | Qty | Configuration | Projection | Construction | Finish |
|---|---|---|---|---|---|---|
| SH01 | W01 | 18 | 4-sided | Refer drawings | Welded | Colour A |
| SH02 | W07 | 24 | 3-sided | Refer drawings | Modular | Colour A |
| SH03 | W12 | 8 | 4-sided | Refer drawings | Welded | Colour B |
This gives both estimator and manufacturer a common reference.
7. Confirm Internal Opening Dimensions
The internal shroud opening needs to relate correctly to the window.
Do not assume it should exactly match the nominal window size.
The project team should consider:
- Window dimensions
- Required clearance
- Fixing lugs
- Site tolerances
- Manufacturing tolerances
- Installation requirements
As a general design consideration, approximately 10 mm clearance between the window size and the inside of the shroud may be appropriate in some EZ Windows applications.
Final clearance must be confirmed for the specific project.
8. Confirm Projection
Projection affects both architectural appearance and manufacturing complexity.
A deeper shroud may influence:
- Material requirements
- Fabrication
- Packaging
- Freight
- Handling
- Installation
- Fixing requirements
Projection should therefore be clearly stated rather than left for assumption.
9. Confirm Face Width
Face width also affects:
- Material
- Appearance
- Overall size
- Fabrication
Where different sides have different widths, identify them individually.
10. Identify Three-Sided or Four-Sided Shrouds
This may appear obvious, but it has a direct effect on scope and price.
Clearly identify whether each shroud is:
- Three-sided
- Four-sided
- Another project-specific configuration
11. Decide Whether Welded or Modular Is Required
This is one of the biggest procurement decisions.
Welded Shrouds
A welded shroud is generally supplied as a substantially factory-assembled frame.
Potential advantages include:
- Factory-welded corners
- Reduced site assembly
- Monolithic appearance
However, larger welded units may require additional:
- Freight
- Packaging
- Handling
- Lifting
- Access planning
Modular Shrouds
Modular shrouds are supplied as smaller components for assembly during installation.
They may offer advantages for:
- Restricted sites
- Large shrouds
- Interstate projects
- Staged projects
- High-volume residential developments
- Freight efficiency
- Manual handling
The procurement team should compare both options where the project permits.
Ask for a Welded and Modular Alternative Where Appropriate
On suitable projects, builders can ask for:
Option A — Welded shroud
and
Option B — Modular shroud
This can be particularly useful on:
- Townhouses
- Apartment developments
- Schools
- Large commercial projects
- Interstate projects
The comparison should consider total project impact rather than fabrication price alone.
Do Not Compare Factory Price Alone
A lower product price can sometimes create higher downstream costs.
Consider:
- Freight
- Unloading
- Storage
- Lifting
- Site labour
- Access
- Assembly
- Installation
A modular system may cost differently at the manufacturing stage while reducing other project logistics.
A welded system may have lower site assembly requirements while requiring larger transport volume.
The correct comparison is therefore:
total delivered project outcome.
12. Confirm Powder-Coated Finish
Finish should be clear at tender stage.
Provide:
- Nominated colour
- Finish
- Relevant coating system
- Any required project specification
- Exposure environment where relevant
Avoid vague notes such as:
- Black
- Grey
- White
Use the actual project finish reference wherever available.
Different Colours Should Be Scheduled Separately
If the project contains several finishes, identify quantities by colour.
For example:
- 24 × SH01 — Colour A
- 12 × SH02 — Colour B
- 8 × SH03 — Colour C
This can affect powder-coating and production planning.
13. Confirm Project Location
Project location affects:
- Freight
- Delivery planning
- Logistics
- Potential installation scope
Always include:
- Suburb
- State
- Postcode where available
This becomes particularly important for interstate work.
14. Confirm Supply-Only or Supply-and-Install
One of the most important scope items is whether the quotation is for:
Supply Only
Manufacturer supplies the completed product for installation by others.
Supply and Installation
Installation forms part of the agreed quotation scope.
Do not assume installation is included simply because a product has been quoted.
The quotation should clearly state the applicable scope.
15. Clarify Site Measurement Responsibility
Builders should confirm:
- Are dimensions taken directly from architectural drawings?
- Are site dimensions required?
- Who is responsible for measuring?
- When does measurement occur?
Unless specifically included in EZ Windows’ agreed scope, site measurement or verification should not be assumed to have been undertaken by EZ Windows.
16. Confirm Shop Drawing Requirements
Before pricing, establish whether the project requires:
- Shop drawings
- Architect review
- Builder approval
- Consultant review
- Multiple revision cycles
This can affect programme and project administration.
17. Allow Time for Shop Drawing Approval
Shop drawing approval should be considered within the construction programme.
A typical process may involve:
information received
→ drawings prepared
→ project review
→ comments
→ revision
→ approval
→ manufacture
Procurement teams should avoid treating drawing approval as an instant step immediately before required delivery.
18. Confirm the Required Delivery Date
Do not provide only:
“ASAP.”
Where possible, establish:
- Required on-site date
- Building stage
- Installation sequence
- Staged delivery requirements
- Critical programme constraints
This allows production planning to be assessed more accurately.
19. Consider Manufacturing Lead Time
Lead times can depend on:
- Quantity
- Complexity
- Shop-drawing approval
- Material availability
- Powder coating
- Manufacturing capacity
- Project changes
Builders should confirm current project-specific lead time rather than relying on historical assumptions.
20. Account for Powder-Coating Lead Time
Powder coating forms part of the production programme.
Changes to:
- Colour
- Coating system
- Quantities
after approval can affect manufacturing timing.
Colour should therefore be finalised as early as practical.
21. Consider Staged Deliveries
Large developments may benefit from staged supply.
Examples include:
- Building A / Building B
- Level 1 / Level 2
- Townhouse stages
- North elevation / south elevation
Staging can help with:
- Storage
- Site congestion
- Installation sequence
- Product protection
If staged deliveries are required, make this clear during procurement.
22. Packaging
The procurement team should understand how the products are expected to arrive.
Packaging may vary according to:
- Shroud size
- Quantity
- Welded/modular configuration
- Freight distance
- Delivery method
Protection after delivery also becomes the builder’s responsibility according to the applicable project arrangements.
23. Freight
Freight can materially affect the overall cost, particularly for large welded shrouds.
Confirm whether freight is:
- Included
- Excluded
- Provisional
- Quoted separately
Also confirm the intended delivery location.
24. Site Unloading
Delivery does not automatically mean unloading is included.
Clarify who is responsible for:
- Forklift
- Crane
- Site labour
- Mechanical handling
- Unloading area
Large welded shrouds may require particular attention.
25. Site Storage
Custom powder-coated architectural products should be protected once delivered.
Builders should plan:
- Secure storage
- Protection from damage
- Avoiding contact with other trades
- Identification by area or shroud reference
Storing completed shrouds randomly around a busy construction site increases risk of damage and confusion.
26. Compare Quotations on the Same Scope
This is critical.
A quotation that appears cheaper may simply exclude more.
Before comparing suppliers, check whether each quotation includes the same:
- Quantity
- Shroud geometry
- Projection
- Finish
- Construction method
- Shop drawings
- Freight
- Packaging
- Installation
- Delivery staging
Only then does the price comparison become meaningful.
27. Check the Material Specification
Ensure the quotation identifies the applicable aluminium/product construction being offered.
Where the architect has specified a particular requirement, verify that the offered product aligns with the approved project documentation.
Do not compare alternatives purely on price if they are based on materially different product specifications.
28. Check Welded Corner Scope
Where welded corners are required, verify whether:
- Corners are actually welded
- Finishing requirements are included
- The quotation matches the intended architecture
A modular product should not be compared directly against welded construction without recognising the difference.
29. Check the Modular Assembly Scope
For modular shrouds, clarify:
- Who assembles them?
- Is assembly part of installation?
- Are required system components included?
- Is installation information provided?
This prevents site assumptions later.
30. Check Fixing Scope
The phrase “fixings included” can mean different things.
Determine:
- Are manufactured fixing features included?
- Are project-specific fasteners included?
- Has a structural fixing design been provided?
- Who determines substrate suitability?
These are separate questions.
EZ Windows does not assume engineering responsibility simply because a shroud includes a fixing flange, lug or other manufactured feature.
31. Clarify Engineering Responsibility
Where structural or fixing engineering is required, it should be established by the appropriately appointed project professional.
Builders should not assume that a product quotation includes:
- Structural calculations
- Wind-load design
- Certification
- Façade engineering
- Fixing engineering
unless such services are expressly identified in the quotation under an appropriate professional scope.
32. Clarify Waterproofing Scope
Similarly, an aluminium shroud quotation should not automatically be interpreted as including the design of:
- Flashings
- Membranes
- Sealants
- Cavity drainage
- Window waterproofing
- Complete façade waterproofing
Those interfaces should be resolved by the project team.
33. Check What Is Excluded
Strong procurement involves reading exclusions, not just inclusions.
Potential exclusions may include:
- Installation
- Site measurement
- Engineering
- Certification
- Waterproofing
- Crane hire
- Scaffolding
- Access equipment
- Site unloading
- Remedial works
- Electrical works
- Other trades
The actual quotation should be reviewed carefully.
34. Avoid Tender Ambiguity
During tender, vague architectural notes can cause subcontractors to make different assumptions.
For example:
“Aluminium shroud to windows.”
One supplier may price:
- Four-sided welded construction
while another may assume:
- Three-sided modular construction
The resulting prices are not comparable.
Clear documentation improves tender quality.
35. Issue RFIs Early
If drawings conflict or lack information, request clarification before final pricing where possible.
Common questions include:
- What is the projection?
- What is the face width?
- Three-sided or four-sided?
- Welded or modular?
- What colour?
- Who installs?
- What clearance is required?
- Are fixing details available?
Early clarification can reduce later variation claims.
36. Separate Confirmed Information From Allowances
Where a detail cannot be confirmed at tender, clearly state the allowance.
For example:
Price based on 200 mm projection pending final architectural confirmation.
This is much clearer than silently assuming a dimension.
37. Check Revision Numbers
Always price from the current drawing set.
Before requesting a final quotation, confirm:
- Architectural revision
- Window schedule revision
- Shroud detail revision
- Specification revision
A price prepared from superseded drawings can quickly become invalid.
38. Re-Quote After Major Design Changes
Changes that may materially affect price include:
- Window dimensions
- Shroud projection
- Quantity
- Geometry
- Construction type
- Finish
- Project staging
Where major design changes occur, obtain an updated quotation rather than assuming the original price remains applicable.
39. Tender Price vs Final Manufacturing Price
Tender documents are sometimes incomplete.
The final manufacturing price may change if later documentation establishes:
- Different dimensions
- Additional quantities
- More complex geometry
- Different finishes
- Changed freight
- Additional shop-drawing work
- New installation requirements
Builders should distinguish between a tender allowance and a final approved manufacturing scope.
40. Procurement Checklist Before Requesting a Quote
Provide or confirm:
- Project name
- Project location
- Current architectural drawings
- Window schedule
- Relevant sections
- Shroud details
- Quantity
- Shroud references
- Internal dimensions
- Projection
- Face width
- Three-sided/four-sided configuration
- Welded/modular requirement
- Corner geometry
- Rear returns
- Finish
- Supply-only/supply-and-install scope
- Freight requirements
- Delivery stages
- Required delivery timing
- Shop drawing requirements
- Site measurement responsibility
- Relevant fixing information
- Current drawing revisions
41. Quotation Comparison Checklist
Before accepting a quote, compare:
- Same quantity
- Same dimensions
- Same projection
- Same configuration
- Same welded/modular construction
- Same finish
- Same freight basis
- Same shop-drawing scope
- Same installation basis
- Same staging requirements
- Same inclusions
- Same exclusions
- Similar programme assumptions
This prevents a misleading lowest-price-only comparison.
Example — Why Three Quotes Can Be Completely Different
Imagine a project requiring 40 large window surrounds.
Supplier A
Prices welded frames, supply only, freight excluded.
Supplier B
Prices modular frames, freight included.
Supplier C
Prices welded frames with installation and lifting included.
The three totals cannot be compared directly.
The estimator first needs to normalise the scope.
This is why clear tender documentation is so valuable.
Frequently Asked Questions
What drawings do I need for an aluminium window shroud quote?
Architectural elevations, window schedules, relevant sections and dedicated shroud details are generally the most useful documents.
Can EZ Windows quote before shop drawings are completed?
A preliminary quotation may be possible where sufficient project information exists. Final manufacturing scope and price may require confirmed approved information.
Should I get welded and modular pricing?
Where the project allows either system, comparing both can be useful, particularly for larger or interstate projects.
Does the price include installation?
Only where installation is expressly included in the quotation.
Does EZ Windows measure every project?
No. Site measurement or verification should only be assumed where it has been specifically included within the agreed scope.
Is freight included?
This depends on the specific quotation. Builders should check whether freight is included, excluded or separately identified.
Does EZ Windows provide engineering?
EZ Windows is the manufacturer. Where engineering is required, the appropriately appointed project professional should establish those requirements unless a separate engineering service has expressly been arranged.
How early should shrouds be ordered?
This depends on project-specific lead times, quantity, complexity, approvals, powder coating and manufacturing capacity. Procurement should begin early enough to allow for information review, shop drawings where required, approvals and production.
Can shrouds be supplied interstate?
Yes, subject to project-specific freight and logistics arrangements. Modular systems can be particularly useful where freight efficiency and handling are important.
Procurement and Responsibility
EZ Windows manufactures according to approved project information and its agreed contractual scope.
Unless specifically included within that scope, EZ Windows does not assume responsibility for:
- Architectural design
- Structural engineering
- Fixing engineering
- Waterproofing design
- Building certification
- Regulatory compliance
- Site measurement
- Installation by others
- Supporting structure
- Suitability of the overall building-envelope design
These matters remain with the appropriately appointed project professionals and responsible parties.
Warranty
Applicable product and finish warranty conditions should be reviewed as part of procurement.
Powder-coating coverage can depend on:
- Selected coating system
- Environmental exposure
- Installation
- Cleaning
- Maintenance
Refer to the EZ Windows Aluminium Window Shroud Warranty page for full information.
Why Builders and Estimators Use EZ Windows
EZ Windows specialises in custom architectural aluminium window shrouds.
We can manufacture:
- Welded shrouds
- Modular shrouds
- Three-sided shrouds
- Four-sided shrouds
- Deep projections
- Custom dimensions
- Project-specific face widths
- Rear returns
- Radius and specialist geometries
- Powder-coated finishes
Project resources can also include, where applicable:
- Shop drawings
- CAD information
- BIM/Revit resources
- Technical documentation
- Installation information
The objective is to make the process from tender to approved manufacture clearer and easier for the project team.
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
Request an Aluminium Window Shroud Quote
For the most useful initial quotation, send:
- Architectural drawings
- Window schedule
- Shroud details
- Quantities
- Project location
- Required finish
- Required programme
Where information is incomplete, identify what remains to be confirmed.
Request a Window Shroud Quote
Send Tender Drawings
Request Welded & Modular Options
Request Technical Information
Speak With EZ Windows
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