Frequent mistakes when ordering Wital Therm MD windows

Introduction

Ordering windows is an important step in renovation or construction. Wital Therm MD is a well-regarded PVC window series, but even a quality profile won't perform if mistakes are made at measurement, selection or installation stages. This article explains common errors and offers practical advice to avoid them.

1. Incorrect measurements

• Mistake: ordering from rough memory or measuring without accounting for jamb depth and wall irregularities.
• Consequence: windows won't fit properly or large installation gaps will appear.
• Avoidance: request a professional measurer or follow a precise measuring guide: three measurements for height and three for width, consider floor level and sill height.

2. Wrong profile and glazing unit choice

• Mistake: choosing the cheapest profile or single-pane glazing regardless of orientation and climate.
• Consequence: heat loss, condensation, and poor sound insulation.
• Avoidance: for cold facades and busy streets prefer a 3-chamber profile with 70 mm installation depth and double- or triple-glazed insulated units with low-e coating and inert gas fill.

3. Ignoring hardware and ventilation

• Mistake: skimping on fittings and omitting micro-ventilation options.
• Consequence: difficult operation, faster wear, fogging, and mould.
• Avoidance: choose reliable hardware (locking mechanisms, hinges) and include a micro-ventilation mode or air inlet valve.

4. Wrong opening direction

• Mistake: not considering how sashes will open (inward/outward, tilt/turn).
• Consequence: clashes with window sills, blinds, radiators or furniture.
• Avoidance: plan interior layout and blind placement; specify sash opening side when ordering.

5. Poor installation quality

• Mistake: hiring unskilled installers or DIY installation without experience.
• Consequence: misalignment, drafts, voided warranty.
• Avoidance: work with certified installation teams, verify correct installation gaps (typically 10–20 mm), proper use of PU foam and external/internal sealing with vapor barrier.

6. Neglecting reveals and finishing

• Mistake: ordering windows without accounting for internal/external finishing of reveals and sills.
• Consequence: finishing work becomes problematic, visible gaps and cold bridges.
• Avoidance: coordinate sill thickness and reveal finishes with the installation team and determine the work sequence beforehand.

7. Overlooking warranty and service terms

• Mistake: purchasing without clarifying warranty conditions and service support.
• Consequence: rejection of repairs for improper maintenance.
• Avoidance: insist on a written contract, product passport, care instructions and service contact information.

Recommendations when ordering Wital Therm MD

• Book a professional measurement and record precise dimensions in centimeters.
• Select profile and glazing based on façade orientation and noise level.
• Invest in quality hardware and professional installation — long-term savings.
• Clarify finishing responsibilities (reveals, sill, trim) before installation.
• Check certificates and compliance with relevant standards (EN/GOST).

A correct window order combines accurate measurements, a well-chosen package (profile, glazing, hardware) and professional installation.

Pre-order checklist

• Exact opening dimensions
• Sash opening direction
• Profile type and number of chambers
• Glazing unit type and low-e options
• Hardware package and micro-ventilation
• Installation conditions and schedule
• Warranty and after-sales service

Conclusion

Wital Therm MD provides reliable thermal and acoustic properties when properly specified and installed. Avoid common mistakes—imprecise measurements, saving on key components, and unclear installation scope. Follow the recommendations and checklist in this article to ensure warm, quiet and durable windows.