Your questions answered
Whether you’re thinking about new windows, doors, or a full conservatory, we know you’ll have questions. From energy efficiency and styles to maintenance and installation, we’ve compiled answers to the queries we hear most from our customers. Our goal is to help you make confident decisions and enjoy a home that’s comfortable, secure, and stylish.
How long do double glazed windows last?
High-quality double glazing lasts 20–35 years, depending on materials and installation. Cosyhomes windows come with a 10-year insurance-backed guarantee.
How do I know when it’s time to replace my windows?
Look for condensation between panes, draughts, or damage. We’ll advise whether you need a repair or full replacement.
Can I replace just the glass instead of the whole window?
Yes. If your frame is sound, we can replace misted or broken units.
What is stippolyte glass?
Stippolyte glass is textured privacy glass often used in bathrooms or entrance doors. It lets in light while obscuring views.
What types of windows do you offer?
Casement, sash, tilt & turn, flush sash, bay, and bow windows. All made-to-measure with energy-saving double glazing.
How do double glazed windows work?
They have two panes of glass with insulating gas between them, reducing heat loss, noise, and condensation.
What are the benefits of energy efficient windows?
Energy efficient windows cut heat loss, lower bills, reduce condensation, and improve comfort. All our windows are A+ rated.
Can double glazing help reduce outside noise?
Yes. The insulating layer between panes also acts as a sound barrier.
How to size replacement windows?
Measure the visible glass width and height, plus the depth of the sealed unit. We can take precise measurements for perfect fit.
How do I stop condensation on windows UK?
Increase ventilation, use extractor fans or trickle vents, and consider energy-saving windows or secondary glazing.
How do I remove moisture from between window panes?
A failed seal causes misting. Replacing the sealed unit restores clarity without replacing the whole window.
How to adjust uPVC windows?
Realign hinges or tighten screws to fix sticking or draughts. We can do this safely during a service visit.
How to remove sliding patio door issues?
Adjust rollers or hinges to fix sticking, draughts, or misalignment. Our team can handle this quickly and safely.
How to fix a faulty window locking mechanism?
Adjust or replace the locking strip, gearbox, or handle, usually a straightforward fix.
How to clean double glazed windows?
Use warm, soapy water and a microfiber cloth. Avoid abrasive cleaners to maintain glass and frame quality.
How to clean uPVC doors?
Warm, soapy water and a soft cloth keeps uPVC doors looking new. Avoid harsh chemicals.
How to clean composite doors?
Composite doors are durable and easy to maintain, just wipe with warm, soapy water to remove dirt and grime.
What’s the difference between uPVC and composite doors?
uPVC: Affordable, low-maintenance and durable.
Composite: Stronger, more insulated, often with a timber core. Energy saving doors are included in our range.
How do I stop condensation in a conservatory?
Improve ventilation, add secondary glazing, or upgrade to energy-efficient windows. We also repair leaking conservatory roofs.
How do I fix a leaking conservatory roof?
Causes include worn seals, cracked glazing bars, or blocked gutters. We provide repair or full replacement.
What’s the difference between a conservatory and an orangery?
Orangery: Brick pillars, flat roof with lantern.
Conservatory: Mainly glass, maximising light.
Do I need planning permission for a porch or garage door conversion?
Most porches or simple garage door conversions don’t need planning permission if within size limits. We’ll check during your quote visit.
How much does a porch or garage door conversion cost?
Prices vary by size, materials, glazing, and extras. We provide tailored, no-obligation quotes.
Are your windows and doors secure?
Yes. All come with modern locking systems to keep your home safe.
How long does installation take?
Most projects are completed in 1–2 days per property, depending on the number of windows or doors.
How often should I service my windows and doors?
Annual checks and maintenance keep everything working smoothly and extend the life of your windows and doors.
Can I customise my windows and doors?
Yes. Choose colours, finishes, and styles to match your home. We can also advise on how to paint windows for a fresh look.
Trusted. Local. Experienced.
We’re Cosyhomes Windows, your go-to team for double glazing in Chessington and across Surrey. No hard sell. Just honest advice from our friendly experts.