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uPVC Site Specification Guidelines

Site Specification Guidelines

Comprehensive site requirements and technical specifications for uPVC window and door installation — including pre-installation checks, measurements & tolerances, site preparation, installation conditions, and post-installation standards.

Grill & Facade Coordination

Mandatory

Window Before Grill

uPVC window installation MUST be completed before any external grill (security grill / MS grill) is fixed.

Notify Immediately

Grill Already Installed

If the grill is already fixed, uPVC window installation becomes difficult and may require grill removal or modification.

Critical

Contractor Coordination Required

Coordinate with the fabricator / civil contractor to ensure uPVC window installation is completed before grill fixing.

Critical: If uPVC windows are ordered after grill installation, site inspection is mandatory. Grill removal or modification and additional fabrication may be required at the client’s cost.

Wall Thickness & Frame Selection

Standard Wall Depths

  • 70 mm series65–85 mm
  • 90 mm series85–105 mm
  • 115 mm series105–125 mm
  • 125 mm series115–135 mm

Important

Wall thickness must be measured after plaster / cladding is completed. If measured earlier, allow extra 20–25 mm for finishes.

Wall Taper & Opening Irregularities

ConditionAllowanceNote
Standard wall taper2 mm per side (total 4 mm)Included by default
Non‑standard taper (>2 mm per side)Requires prior notificationMust be confirmed before order
Maximum taper accommodated5 mm per side (total 10 mm)Beyond this – structural assessment required

Notification required: If wall taper exceeds 2 mm per side, you must inform us before order confirmation. Frames can be adjusted, but extra lead time and cost may apply.

⏱️ Before You Confirm

  • Wall taper 2 mm?Notify us
  • Grill installed?Mandatory site visit
  • Design changes?24h before
  • Storage ready?Client responsibility

Not sure about site conditions?

Our technical team can visit your site, identify potential complications, and provide precise recommendations.

On‑site measurement verification
Identify hidden complications
Detailed site report within 24h

Download Resources

Frequently Asked Questions – Site Specifications

What happens if wall taper is more than 2 mm per side?

We need to know before order confirmation. Our engineers will adjust the frame design or suggest site rectification. Extra charges may apply for non‑standard taper.

Can you install windows if the external grid is already fixed?

It depends on the grid type and access. In most cases, grid removal or modification is required. We strongly recommend a site survey before proceeding.

Who is responsible for glass breakage after delivery?

Glass is fragile. Once delivered to site, client is responsible for safe storage. We offer protective packaging and handling guidelines.

How long do we have to remove the protective film?

Within 30 days of installation. After that, UV exposure may make removal difficult. We are not liable for bonded film.

Is scaffolding provided by your team?

No, scaffolding / safe access must be arranged by the client unless otherwise agreed in the quotation.

Can we request design changes after order confirmation?

Changes requested within 24 hours of confirmation may be possible. After that, cancellation / re‑fabrication charges apply.

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