Tips for maintaining windows in new houses

Introduction

New PVC windows are a long-term investment in comfort and energy efficiency. Proper care from the first days after installation helps preserve appearance, functionality and warranty. This guide covers inspection, cleaning, seal and hardware maintenance, condensation control and seasonal tasks.

First 30 days after installation

• Inspect frames and glass for scratches, chips and seal damage.
• Test opening, closing and tilt functions; check locks and handles.
• Remove installation debris, silicone residues and protective film carefully.

Tip: take photos of any defects and report them to your installer. Warranty claims are easier to process with visual evidence.

Monthly care (spring through autumn)

Cleaning frames and glass

• Use warm water with mild detergent. Avoid abrasive cleaners and rough sponges.
• Microfiber cloths work best for glass; specialized glass cleaners remove stubborn marks.
• For silicone or paint residues use products designed not to harm PVC.

Caring for seals

• Wipe rubber seals with a soft cloth and mild soap solution.
• Apply a silicone-based conditioner every six months to keep seals elastic and watertight.

Hardware and mechanisms

• Lubricate moving parts with recommended lubricants — avoid machine oil or solvent-based sprays.
• Check screw tightness and the integrity of fixings periodically.

Seasonal tasks (winter and transitional periods)

• Before cold weather, inspect seals and clear drainage channels of dust and debris.
• Do not force open frozen parts: gently melt ice with warm (not hot) water and remove moisture.
• Significant temperature changes may require hardware adjustment to maintain a tight seal.

Dealing with condensation and mold

• Condensation often results from poor ventilation. Use regular airing, tilt ventilation modes, or a mechanical supply system.
• At first signs of mold, clean with vinegar solution or a specialist product and dry the area thoroughly.
• Check indoor humidity levels; use a dehumidifier if necessary.

Caring for sills and external trim

• Keep sills dry and clean; avoid standing water and long-term moisture exposure.
• Clean external sills and drip caps with a soft brush and water.

Common mistakes to avoid

• Don’t use abrasive cleaners — they scratch the PVC and dull the finish.
• Don’t place heavy objects on opening sashes or drag them across the frame — this damages hardware.
• Avoid leaving windows in tilt position during deep freezes to prevent freeze damage to drain channels.

When to call a service technician

• If the window does not close tightly or you see cracks and deformations.
• If handles stick, creak, or sashes sag and are not corrected by lubrication or adjustment.
• If there is constant leakage or persistent internal condensation — the insulating glass unit may need replacement.

Frequently Asked Questions (FAQ)

How often should I lubricate the hardware?

Generally every 6–12 months, depending on use and environmental conditions.

Can I wash windows in winter?

Yes. Use warm water and avoid leaving wet streaks. Avoid cleaning at very low temperatures to prevent freezing.

What if there is condensation between panes?

This indicates a compromised insulating glass seal. Contact a professional service — often replacement of the IGU is necessary.

How can I prolong the life of rubber seals?

Regular cleaning and application of silicone conditioners, avoiding aggressive chemicals and sharp objects.

How to care for blinds or roller shades?

Remove dust with a soft brush or vacuum on low power. Follow manufacturer instructions for fabric treatments.

Conclusion

Routine inspections, gentle cleaning, timely lubrication and attention to indoor climate will keep new windows functioning efficiently and looking good for many years. Small preventative actions save time and money over the long term.