🔩 What You Get
Plastic rollers instead of heavy-duty bearings, basic hinges instead of reinforced ones, and 1–2 point locks instead of multi-point perimeter locking mechanisms. The cost difference per set: €15 vs €60.
"Cheap" Windows: The Hidden Costs You Will Pay Dearly for in 3 Years
You have called three professionals. Two quoted ~€5,000. The third offers €3,500. First thought: "I found the deal of the year." Unfortunately, in the aluminium industry, there are no "magic" discounts of 30–40%.
Raw material costs (metal and glass) are commodity-priced and roughly the same for everyone. If someone quotes an unrealistically low price, they are cutting corners in critical areas. Let us examine the 4 areas where cheap quotes make their savings.
1. The "Invisible" Mechanisms (First Victim)
The quote may list a reputable profile brand (e.g. Alumil or Europa). The manufacturer does buy the branded aluminium, but to cut costs they select the cheapest possible Asian-made mechanisms.
⏰ The Hidden Cost (1–3 Years)
The heavy balcony door sags and scrapes the floor. Plastic rollers melt and the door jams. You will need a technician to replace mechanisms - paying for parts and labour that wipe out the original "discount".
⚠️ The Insurance Risk
Many home insurance policies require multi-point locks to cover burglary claims. If your windows have only a single-point lock, you may lose your entire compensation in the event of a break-in. Always check with your insurer before choosing mechanisms.
2. Cheap Installation Materials (The "Water Slides")
Installation is everything. A mediocre window properly installed outperforms a top-tier window badly installed. Quality professionals use premium PU foam and specialised MS Polymer silicones.
🧴 What You Get
The cheap contractor applies minimal low-quality foam and seals joints with budget acrylic mastics that dry out and crack in the first heatwave. Cost difference: €3 cheap sealant vs €12 MS Polymer per cartridge.
🌧️ The Hidden Cost (First Storm)
Water finds the cracks in failed sealant, seeps under the frame and soaks the wall or parquet floor. Repair means stripping old sealant, re-sealing, patching plaster and possibly replacing flooring. Cost: many times the original "saving."
🏗️ The Wonky Frame
Beyond consumables, the cheap contractor often does not properly level the frame to save time. Result: windows do not close airtight, they create draughts and rattle in strong wind. Fixing this means removing and reinstalling the frame - i.e. double labour cost.
3. The "Ghost" Glass (Is It Really Energy-Rated?)
Glass covers 75% of the window. In a rock- bottom quote, corners are cut on thickness or crystal technology.
🔍 What You Get
Instead of genuine Low-E 5 mm glass with Argon gas, you may receive a thinner 4 mm double-glazed unit without gas or with an older-generation coating. The insulation difference is dramatic: Uw 1.3 vs Uw 2.6.
💡 The Hidden Cost (Every Month)
Sound insulation will be non-existent - you will hear traffic as if the window were open. In winter you will burn more fuel/electricity, completely losing any investment payback (ROI). The extra annual energy bill can reach €200–€400. Over a decade, that translates to €2,000–€4,000 in lost savings - many times the €500 you initially “saved.”
4. The Vanishing After-Sales Service
A professional who "kills" prices works on razor-thin margins or off the books. This does not allow them to maintain a customer service department.
📞 The Hidden Cost
When the window breaks, you call. They say "I'll come on Tuesday" and never show up, because free service does not pay. You are forced to find a new technician who charges a premium visit fee just to figure out what workaround the previous installer did.
🛡️ How to Protect Yourself
A window is not a T-shirt you throw away if defective. It is a 30+ year investment. Demand detailed quotes: mechanism brands, glass type and thickness, written warranty. Compare apples to apples and remember: "The bitterness of poor quality lingers long after the sweetness of the low price is forgotten."
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How Much Do Aluminium & PVC Windows Cost? (Prices per m²) What Am I Paying For? Window Cost Breakdown (Materials & Labour) Window Replacement ROI: How Many Years Until It Pays for Itself? Limited Budget Renovation: Which Rooms Deserve Your Investment?
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