Which windows are best for new Lithuanian project apartments

Which windows are best for new Lithuanian project apartments

Choosing windows for new residential projects in Lithuania requires balancing energy efficiency, sound insulation, durability and cost. This guide explains the key features of PVC windows suitable for modern apartment buildings and offers practical recommendations on profiles, glazing and hardware.

Key criteria to consider

• Thermal performance (Uw) — crucial for energy savings and winter comfort. Aim for Uw ≤ 1.4–1.1 W/m²·K depending on project requirements.
• Glazing — an energy-efficient double-glazed insulated glass unit (IGU) with argon fills provides a good price-to-performance ratio. For higher demands, consider warm-edge spacers and low-e coatings.
• Profile — 5-6 chamber PVC profiles from reputable European manufacturers deliver reliability and good insulation.
• Hardware — quality fittings with micro-ventilation, multi-point locking and adjustability are important for security and longevity.
• Airtightness and weather sealing — prevent drafts and condensation.

Climate and building context in Lithuania

Lithuania's cool temperate climate with cold winters means:

• Higher insulation requirements to limit heat loss.
• Proper ventilation planning: very airtight windows require mechanical ventilation or heat recovery systems.
• In urban areas, prioritize acoustic performance due to traffic and density.

Recommended specification for new-project apartments

• Profile: 5–6 chamber class A profile from a recognized supplier.
• IGU: double-glazed energy-efficient unit (e.g. 4-16-4-16-4) with argon and low-e glass.
• Uf of the profile: lower is better; target Uf ≈ 1.2–1.3 W/m²·K.
• Hardware: multi-point locking, micro-ventilation, anti-burglary options.
• Installation: warm installation using vapor and moisture barriers.

Options by budget

• Economy: 5-chamber profile + standard double IGU, basic fittings — suitable for secondary rooms or tight budgets.
• Optimal: 6-chamber profile + energy-efficient double IGU with argon and quality hardware — best balance for most apartments.
• Premium: enhanced profiles and triple glazing for very high acoustic or thermal requirements.

Installation and warranty

Proper installation is as important as the product itself. Ensure:

• Certified installers experienced in new-builds are used.
• Warm installation technique with external waterproofing and internal vapor barrier is followed.
• Uw and acoustic test reports are provided along with warranties on profile, IGU and installation.

Practical tips for developers and buyers

• Define Uw and acoustic targets in the project documentation early.
• Plan mechanical ventilation or windows integrated with filtered vents.
• Compare total cost — product price, installation and lifecycle maintenance.

FAQ

Are triple-glazed units necessary in Lithuania?

For most new apartments, an energy-efficient double-glazed unit with argon is cost-effective and sufficient. Triple glazing is recommended only for extreme situations — very high noise levels or passive-house level insulation.

Should I choose a 5- or 6-chamber profile?

A 6-chamber profile typically provides better thermal and acoustic performance and fits modern energy efficiency standards. The final decision depends on budget and Uw targets.

Tip: Always request actual Uw calculations and certification from suppliers, not just marketing claims.

Description: Practical guide to choosing PVC windows for new Lithuanian project apartments, focusing on insulation, glazing, hardware and installation.