1. Understand the Job Before You Order
Measure carefully, survey the space, and confirm your customer’s requirements. There are lots of options when buying windows — our team can help you get it right.
Key questions to answer:
- Is the job replacement, refurbishment, or new build?
- Does the property require planning or conservation-area compliance?
- What energy performance is needed (current Building Regulations or higher)?
- Are there security requirements (PAS 24, Secure by Design)?
- Does the customer have a specific colour, style, or budget expectation?
2. Choose the Right uPVC System (Not Just a Price)
UPVC windows can look similar, but quality varies significantly between systems.
What to check in the profile:
- Profile depth (70mm is common; 80mm+ can improve performance)
- Chamber count (more chambers usually means better thermal efficiency)
- Extrusion quality and consistent wall thickness
- Weld strength and corner finish
Reinforcement matters:
- Ensure galvanised steel reinforcement is used where required
- Confirm correct reinforcement specification for larger openings
- Check that the supplier follows the manufacturer’s reinforcement guidelines
Colour and foil quality:
- Confirm the foil brand and warranty
- Check stock vs made-to-order colours
- Confirm dual colour options and lead times
3. Energy Efficiency: Assess the Whole Window
Energy performance is not just about the glass. It’s the entire window system.
Key performance factors:
- Overall window U-value (not just the glass)
- Multi-chambered uPVC profiles
- Low-E glass coatings
- Argon gas filling (standard in most quality units)
- Warm edge spacer bars
Trade tip: A well-specified double-glazed window can outperform a poorly specified triple-glazed unit.
4. Security Standards (Always Specify Them)
Security is a major factor for customers when buying windows. It should be treated as standard, not an optional upgrade.
Security feature you should specify:
- PAS 24 compliance
- Multi-point locking systems
- Shootbolt or mushroom cam locks
- Internal glazing beads (prevents bead removal from outside)
- Laminated glass in vulnerable locations
Trade tip: Security is one of the easiest ways to justify price and protect your reputation.
5. Use Reputable Brands (Eurocell Recommended)
Using recognised brands like Eurocell reduces the risk of inconsistent quality, poor support, and warranty issues. You can get a free quote from our Eurocell Trade Window team.
What to look for:
- System supplied by an established brand (e.g., Eurocell)
- Supplier is approved by the manufacturer (e.g., Eurocell Approved Installer / Fabricator)
- Long-term parts availability and support
Using recognised brands like Eurocell reduces risk of inconsistent quality, poor support, and warranty issues. You can get a free quote Eurocell Trade Window Quote from our team.
6. Certifications & Compliance
Reputable manufacturers will provide transparent documentation on their window certification and compliance.
Certification can include:
- PAS 24 certification
- Secure by Design approval (if required)
- BS EN standards compliance
- UKCA / CE marking (as applicable)
7. Manufacturing Location & Lead Times
Where windows are manufactured affects quality control and lead times. To get the best results for you and your customer, choose a reputable manufacturer that has been in business for at least five years. This helps ensure warranties are supported and after-sales product support is maintained.
Locally manufactured systems:
- Better quality control
- Faster lead times
- Easier after-sales support
Imported systems:
- Often cheaper upfront
- Longer lead times
- Limited technical backup
Always confirm before ordering:
- Standard lead time
- Damage / remake policy
- Delivery scheduling and site access
8. Glass Specification: Be Precise
Never assume glazing is “standard” on trade uPVC windows. Make sure you specify with the customer and supplier which glazing type is required for the job. If you have questions regarding glazing types and pricing you can contact our trade window team.
Always specify:
- Toughened safety glass where required
- Laminated glass for enhanced security
- Obscure glass level (e.g., Level 3 or 5)
- Acoustic glass for noisy areas
- Solar-control glass for south-facing elevations
9. After-Sales Support & Warranty
Make sure you work with a trusted, reputable window supplier so you’re protected if anything goes wrong.
Check with your supplier:
- Who handles warranty claims?
- Are replacement parts readily available?
- Is your supplier Scotland based?
- Are handles, hinges, and locks stocked long-term?
Choosing the cheapest option can lead to additional costs later.
10. Final Checklist Before Ordering
A quick checklist to go over before contacting your supplier:
- Frame system, size and colour(s)
- Glass specification
- Opening configuration and handing
- Security compliance
- Lead time and delivery date
- Warranty terms
Our trade team will always make sure everything is properly documented and you get the compliance you require.
Sourcing trade uPVC windows is not just about price. Profile quality, reinforcement, energy performance, security compliance, and brand reputation all affect installation success and long-term performance.
Trade professionals who specify uPVC windows correctly reduce call-backs, protect margins, and build stronger reputations with customers.
Our trade team can support you with specification, compliance, and accurate quoting.