15 Questions to Ask Before Hiring an Aluminium Fabricator (Don’t Get Ripped Off)

🔧 Your complete interview guide – separate professionals from pretenders with these proven questions

Let me tell you about Michael. He’s a homeowner in Sandton who needed eight new aluminium windows. He found a “fabricator” online with a fancy website and great reviews. The price was amazing – R12,000 less than the other quotes. Michael paid a 50% deposit. The windows arrived six weeks late. They were the wrong size. The finish was peeling. The profile brand? A cheap Chinese import with no warranty. The fabricator disappeared when Michael complained. That R12,000 “saving” cost him R45,000 to fix.

I’ve seen this story play out too many times across Johannesburg, Pretoria, Cape Town, and Durban. The difference between a quality fabricator and a scammer isn’t always obvious from a website or a cheap quote. You need to ask the right questions to ask aluminium fabricator candidates before handing over any money.

This guide provides 15 essential questions you must ask every potential hiring fabricator candidate. We’ll cover technical questions about profiles and finishes, business questions about warranties and insurance, and red-flag questions that expose scammers. By the end, you’ll have a complete fabricator checklist and know exactly what questions should i ask an aluminium fabricator to protect yourself and your investment.

For related guidance, check our aluminium fabricators near me, how to choose the best fabricators, and warranty guide.

❓ Why Asking the Right Questions Before Hiring Matters

Before diving into the questions to ask aluminium fabricator list, understand why this interview process is critical.

What happens when you don’t ask questions:

• You hire based on price alone – and get the quality that comes with cheap prices
• You discover after delivery that the profiles are unbranded imports with thin walls
• You realise too late that the “warranty” was verbal and never documented
• You find out the fabricator has no insurance when they damage your property
• You learn the hard way that references were fake or non-existent

What proper questioning achieves:

• You separate professional fabricators from backyard operators
• You verify technical competence before committing money
• You establish clear expectations about profiles, finishes, and timelines
• You get warranties and insurance confirmations in writing
• You protect yourself from the scams that plague the aluminium industry

According to SAQA qualification verification and SABS quality standards, professional fabricators should be able to answer technical questions about their products and processes confidently.

📋 The 15 Essential Questions to Ask Aluminium Fabricator Candidates

Here are the critical questions to ask aluminium fabricator candidates. Ask every single one – no exceptions.

Category 1: Technical & Product Questions

1. “What aluminium profile systems do you use – Alusaf, Wispeco, Hulamin, or something else?”
   Professional fabricators use reputable brands. “Unbranded” or “imported” profiles are red flags. Quality varies massively.
2. “What is your minimum wall thickness?”
   Should be 1.2mm for residential, 1.5mm for coastal areas. Anything under 1.0mm is unacceptable for windows.
3. “Do you offer thermal break profiles? What is the polyamide strip width?”
   Thermal break essential for energy efficiency. Strip width should be minimum 15mm, ideally 20mm+.
4. “What finishes do you offer and what warranty comes with them?”
   Powder coating or anodising. Warranties: 10-15 years standard, 15-20 years marine-grade. Get it in writing.
5. “What glass options do you provide – single, double, Low-E, laminated, toughened?”
   Professional fabricators offer multiple glass options. Limited options suggest limited capability.

Category 2: Business & Credential Questions

6. “Can you provide your SABS certification for profiles and finishes?”
   SABS certification ensures quality standards. Fabricators should provide certification numbers.
7. “Do you have public liability insurance? Can you provide proof?”
   Essential for your protection. Call the insurer to verify active coverage. Read our verification process.
8. “What trade qualifications do your fabricators hold?”
   SAQA-registered qualifications indicate proper training. Ask for certificate copies.
9. “Can you provide three recent references from similar projects?”
   Call them. Ask about quality, timeliness, communication, and problem resolution.
10. “What is your registered business address? Can I visit your workshop?”
    Professional fabricators have proper workshops. “Mobile only” or home-based is a red flag.

Category 3: Process & Warranty Questions

11. “What is your typical lead time from order to delivery?”
    2-6 weeks is normal. Anything under 1 week suggests pre-made or poor quality. 8+ weeks may indicate capacity issues.
12. “What warranty do you offer on frames, finishes, and installation?”
    Minimum expectations: 5-10 years on frames, 10-15 years on finish, 1-2 years on installation. Read warranty guide.
13. “What is your payment schedule – deposit and balance terms?”
    30-50% deposit is normal. 100% upfront is a scam. Never pay full amount before work starts.
14. “Do you handle measuring and installation, or only supply?”
    Both is ideal for single accountability. If supply only, ask about recommended installers.
15. “What happens if windows are manufactured incorrectly or don’t fit?”
    Professional fabricators take responsibility. Get their correction policy in writing before ordering.

🚩 Red Flag Answers – When to Walk Away

Red flag answers and what they mean:

• “We use our own profiles” or “Imported profiles”: Usually means cheap unbranded imports with poor quality control, thinner walls, and no SABS certification.
• “Wall thickness? About 0.8mm or 1.0mm”: Too thin for windows. Walk away. Minimum 1.2mm for residential, 1.5mm for coastal.
• “Thermal break? Too expensive, not necessary for Joburg”: Incorrect – thermal break saves energy in any climate. Avoid fabricators who dismiss energy efficiency.
• “Finish warranty? We don’t give written warranties”: No warranty = no accountability. Every professional offers written finish warranties.
• “Insurance? Why do you need that?”: Uninsured fabricators leave you liable if they damage your property or injure someone.
• “References? Our clients are private, can’t share”: Fabricators with happy clients are eager to share references. No references = no happy clients.
• “We work from home / don’t have a workshop visit”: Quality fabrication requires proper equipment. No workshop means no capability.
• “Full payment upfront required”: Scam. Immediately walk away. 30-50% deposit is normal, 100% upfront is never acceptable.
• “If windows don’t fit, that’s your problem – you measured”: Professional fabricators take responsibility or measure themselves. Passing blame is unacceptable.
• “SABS? That’s just a certificate, doesn’t matter”: Fabricators who dismiss SABS certification are likely using non-compliant profiles.

For more scam prevention, read how to avoid contractor scams and is ServiceLink SA legit.

🔍 Beyond Questions – Physical Verification Steps

Asking what questions should i ask an aluminium fabricator is essential, but you should also verify physically. Here’s your fabricator checklist for physical verification:

Workshop visit checklist:

• Precision cutting equipment: Look for professional mitre saws and cutting stations. Hand-sawn corners indicate poor quality.
• Machining equipment: Proper machinery for drainage channels, hardware recesses, and corner crimping.
• Finishing facilities: Powder coating booth or relationship with professional coater. Ask where finishing is done.
• Quality control area: Fabricators should check each window before delivery.
• Inventory of profiles: See actual profiles – check wall thickness with a caliper if possible.

Sample inspection checklist:

• Ask to see completed windows similar to your project
• Check corner joints – should be tight with no gaps
• Check finish consistency – no runs, thin spots, or orange peel
• Open and close windows – smooth operation without binding
• Check hardware quality – feels solid, not flimsy

Documentation verification:

• SABS certification certificates (ask for copies)
• Insurance policy (call insurer to verify active coverage)
• Trade qualification certificates (verify with issuing body if possible)
• Warranty documents (read before signing)

For more on verification, read our verification process.

⭐ Questions Categorized by Priority – What Matters Most

Not all questions to ask aluminium fabricator carry equal weight. Here’s how to prioritise:

Focus your energy on the Critical and High Priority questions. These determine whether you’re dealing with a professional or a pretender.

🏠 Scenario-Based Question Guide – Tailor Your Questions

The questions to ask aluminium fabricator should vary based on your project type and location:

For coastal properties (Cape Town, Durban, Port Elizabeth):

• “Do you use marine-grade powder coating or anodised finishes?”
• “What grade stainless steel do you use for hardware – is it 316 grade?”
• “What wall thickness do you recommend for coastal wind loading – 1.5mm or thicker?”
• “Do you have experience with properties within 500m of the ocean?”
• “What is your corrosion warranty for coastal applications?”

For heritage properties (Constantia, City Bowl, parts of Pretoria):

• “Do you have experience with heritage property window replacements?”
• “Can you match original window profiles and sightlines?”
• “Do you work with heritage architects or understand local regulations?”
• “Can you provide references from other heritage projects?”

For large or complex projects (sliding doors, bi-folds, custom shapes):

• “What is the maximum panel size you can fabricate?”
• “Do you reinforce large panels for structural integrity?”
• “Can you provide engineered drawings for structural approval?”
• “What is your experience with bi-fold or lift-slide systems?”

For budget-conscious projects:

• “Can you provide options at different price points (standard vs premium)?”
• “What’s the cost difference between standard and thermal break?”
• “Do you offer financing or payment plans?” Read about Pay Later option
• “Can you provide a quote that separates supply from installation?”

For more on project-specific guidance, read how to choose the best fabricators.

📄 Documentation to Request – Get Everything in Writing

After asking your questions to ask aluminium fabricator, request these documents before signing anything:

Pre-contract documentation:

• Detailed written quote: Must include all specifications (profile brand, wall thickness, finish type, glass type, hardware brand). Use our free quote template.
• SABS certification copies: For profiles and finishes. Verify with SABS if possible.
• Insurance certificate: Public liability insurance. Call insurer to verify active coverage.
• Trade qualification certificates: For fabricators and welders.
• Warranty documents: Written warranty for frames, finish, and installation. Read carefully before signing.

Contract must include:

• Complete scope of work
• Window specifications per opening
• Payment schedule (deposit % and final payment terms)
• Lead time and installation timeline
• Warranty terms and duration
• Dispute resolution process – read our dispute resolution guide
• Cancellation policy
• Both parties’ signatures and date

Red flags in documentation:

• No written contract – verbal agreements only
• Vague specifications (“aluminium windows” without details)
• No warranty section or “warranty available on request”
• Contract that heavily favours fabricator with no consumer protections
• No company details (registration number, VAT number, physical address)

For NHBRC requirements on new builds, read NHBRC aluminium windows requirements.

⚖️ Two Ways to Hire: DIY Interview or Let ServiceLink SA Handle It

When it comes to hiring fabricator, you have two options:

Option 1 – DIY Interview: Use this guide to interview fabricators yourself. Ask all 15 questions, verify documentation, visit workshops, check references. You’re in full control but also fully responsible for verification.

Option 2 – Use ServiceLink SA: We’ve already asked these questions to ask aluminium fabricator of every fabricator in our network. We verify SABS certification, insurance, qualifications, and references before they join. You get matched with pre-vetted professionals and benefit from our Beat Your Quote guarantee, Pay Later option, and workmanship guarantees. You still choose the fabricator, but the verification is done for you.

Which should you choose? If you have time and experience, DIY works. If you want maximum protection and convenience, use ServiceLink SA. Both are valid – just don’t skip verification entirely.

For more on our service, read how ServiceLink SA works and is ServiceLink SA legit.

🚫 7 Common Mistakes When Interviewing Aluminium Fabricators

1. Asking questions but not verifying answers: Anyone can say “yes, we have insurance.” Verify by calling the insurer. Anyone can claim “SABS certified” – ask for certificate copies.
2. Skipping the workshop visit: If you only communicate via phone/email, you never see their operation. Visit the workshop – it reveals everything about their professionalism.
3. Not calling references: Fabricators provide references expecting you won’t call. Call them. Ask specific questions about quality, timeline, and problem resolution.
4. Focusing only on price: The cheapest quote is rarely the best value. A fabricator charging R2,000 more but using better profiles and longer warranties is actually cheaper long-term.
5. Not getting everything in writing: Verbal promises mean nothing. Get all specifications, warranties, and guarantees in writing before paying a deposit.
6. Rushing the decision: Fabricator says “sign today for discount” or “limited availability.” Professional fabricators don’t pressure you. Take your time.
7. Hiring without comparing multiple fabricators: Always interview at least 3 fabricators. You learn what’s normal, what’s exceptional, and what’s suspicious by comparing.

For more guidance, read how to choose the right contractor and free inspections.

❓ Frequently Asked Questions About Hiring Aluminium Fabricators

✅ Final Thoughts: Interview Thoroughly, Hire Confidently

Your home deserves quality aluminium windows. Quality starts with choosing the right fabricator. The questions to ask aluminium fabricator in this guide are your protection against scams, poor quality, and costly mistakes.

Remember: every question serves a purpose. Profile brand questions verify quality. Warranty questions protect your investment. Insurance questions shield you from liability. References prove capability. Don’t skip any – and don’t accept vague answers.

Key takeaways for hiring fabricators:

• Ask all 15 essential questions – no exceptions
• Verify answers with documentation (SABS, insurance, qualifications)
• Visit workshops and inspect past work
• Call references and read online reviews
• Get everything in writing – quote, specifications, warranty, contract
• Never pay 100% upfront – 30-50% deposit maximum
• Compare at least 3 fabricators before deciding
• Consider using ServiceLink SA for pre-vetted fabricators and additional protection
• Read how to choose the best fabricators for more depth
• Check fabricator reviews before hiring

Your next step: Ready to hire a fabricator? Use this guide to interview candidates, or let ServiceLink SA match you with pre-vetted fabricators who’ve already answered these questions. Get quotes, compare, and hire with confidence – knowing you’ve protected yourself from the scams and poor quality that plague the industry.

For more information about hiring aluminium fabricators and protecting your investment, explore our related resources: how to choose the best fabricators, aluminium fabricators near me, free quote template, warranty guide, and NHBRC requirements. Our how ServiceLink SA works, verification process, and is ServiceLink SA legit pages explain our matching service. For scam prevention, read avoiding contractor scams. Find fabricators in your area: Gauteng, Johannesburg, Pretoria, Sandton, Cape Town, or Durban. For related home improvement services, see our building construction and tiling services guides.