Answers to questions about hardware adjustment

Answers to questions about hardware adjustment

Adjusting window hardware is a practical maintenance task that improves sealing, prevents premature wear, and helps avoid costly repairs. Below you will find clear guidance on when to adjust, which tools to use, step-by-step actions, and answers to the most common questions.

When to consider adjustment

• The sash sticks or the handle turns with difficulty.
• The sash rubs against the frame in one place and leaves a gap in another.
• You feel a draft or hear outside noise when the window is closed.
• The handle turns freely but the window does not lock.
• Seals look compressed or damaged, creating cold spots.

Tools and preparation

• Hex (Allen) keys (commonly 3–4 mm) for eccentric cams and adjustment screws.
• Screwdrivers (Philips and flat) for strike plates and fasteners.
• Silicone-based lubricant or graphite spray for moving parts.
• Cloth, gloves, flashlight. Manufacturer’s manual if available.

Important: Before adjusting, unload the sash and secure it — use a helper or set the window to ventilation position.

Main types of adjustments

1. Vertical adjustment

• Found on top or bottom hinges; used to raise or lower the sash.
• Turning the adjustment screw clockwise usually lifts the sash; counterclockwise lowers it.
• Make small increments (¼ turn), check closing after each change.

2. Lateral (in/out) adjustment

• Corrects rubbing between sash and frame.
• Side hinges or adjustment bolts move the sash inwards or outwards.
• Adjust carefully to avoid creating a gap on the opposite side.

3. Compression (sealing) adjustment

• Compression is adjusted via eccentrics on strike plates or cams on the sash.
• Turn the eccentric to increase or decrease the seal at specific points around the perimeter.
• Increase compression where drafts are detected.

4. Handle and locking mechanism

• If the handle turns without engaging, inspect the strike plate and locking cams.
• Tightening handle screws or repositioning the strike plate often fixes the issue.

Lubrication and maintenance

• Lubricate moving parts annually with silicone lubricant or a recommended product.
• Avoid petroleum-based oils — they attract dirt and damage seals.
• Inspect seals and replace if cracked or worn.

Safety and practical tips

• Do not force adjustments under load; relieve sash weight before working.
• If unsure, contact a professional. Incorrect adjustments can damage hardware or glazing.
• Manufacturer instructions usually list recommended torque values and adjustment order.

Frequently Asked Questions (FAQ)

Can I adjust the hardware myself?

Yes — basic tasks such as lubrication, compression adjustment, and tightening fasteners can be done by a competent homeowner. Complex issues like bent hinges, warped sashes or damaged glass should be handled by a technician.

How do I know if compression is weak?

A weak compression commonly leads to drafts, increased noise, or condensation near the junction. Test by feeling for airflow or using a sheet of paper to check the seal.

Which screws should not be overtightened?

Avoid excessive torque on handle screws and adjustment bolts. Over-tightening can strip threads or deform the profile.

How much does professional adjustment cost?

In Latvia, a basic service call and adjustment typically range from 20–50 EUR. More extensive repairs or part replacements can cost 50–150 EUR or more. Prices vary by region and service provider.

My sash has sagged — what to do?

Vertical adjustment on the hinges usually corrects a sagging sash. If the hinge is damaged, it should be replaced.

How often should I service the hardware?

Inspect and lubricate at least once a year; for high-use windows, every six months is advisable.

Can I adjust in winter?

Yes, but be mindful of material contraction due to cold. Make conservative adjustments and re-check after temperature stabilizes.

If you need step-by-step instructions for a specific hardware brand (Roto, Siegenia, Maco, etc.) or a short video guide, DK-Logi can prepare tailored instructions or send a technician for diagnosis and repair.