Condensation between panes and chilly draughts can make your home feel uncomfortable and send heating bills soaring.
We provide made-to-measure double glazing across the UK, fitted by FENSA-registered installers, with a free home survey and a 10-year guarantee for complete peace of mind.
You’ll receive a clear, itemised double glazing quote showing exact costs, expected energy savings and firm installation times, with no pushy sales tactics.
Just share rough window measurements and your preferred frame material (uPVC, aluminium or timber) and our glaziers will model energy performance, solar gain and likely annual heating reduction using A-rated 28mm argon-filled low-E sealed units.
Every quote lists frames, glass, labour, extras, VAT and warranties, and we advise avoiding large deposits and insisting on written variations.
Read on to see how to compare quotes fairly and get the best value for your home.
Takeaways
- Clear written quotes show exact costs, expected annual energy savings and optional upgrades in pounds, before you commit.
- Detailed itemised breakdowns prevent nasty surprises, separating frames, glass, labour, disposal, scaffolding, electrics, VAT and add‑ons.
- High‑performance A‑rated double glazing with argon and low‑E coatings cuts heat loss and lowers heating bills.
- Fully specified installations list glass, hardware, scope, lead times and warranty, giving confidence your windows are fitted correctly.
- No‑pressure process lets you compare like‑for‑like quotes, amend in writing and secure your slot with a small deposit.
Get a Free, No‑Obligation Double Glazing Quote
Want a straight quote with no hard sell? We’ll give you a free, no‑obligation price that shows expected energy savings and exactly what you’re paying for.
Start by sending over rough measurements and your preferred frame material (uPVC, aluminium or timber). We’ll size up the units and model realistic U‑values, solar gain and likely annual heating reduction using A-rated, argon‑filled low‑E glass in a 28mm sealed unit as standard.
Your written quote will set out:
- Product specification (frame profile, 28mm sealed units, low‑E coating, gas fill, spacer bar)
- Thermal performance figures (U‑values, energy rating, ventilation details)
- Glazing layout (openers, fixed lights, trickle vents, obscured or toughened panes)
- Hardware and security (multi‑point locks, internally beaded sashes, handle type, hinge spec)
- Installation scope (removal of old frames, making good, sealants, Q‑LON draught gaskets)
- Warranty cover, FENSA certification, lead times, and optional upgrades with costs in £
Use the same technical points to compare quotes: U‑values, glass spec, frame system, locking gear and warranty length, not just the headline price. If anyone pushes you to “sign today”, step back – a free quote is there so you can check performance claims, confirm Building Regulations compliance, and pick the frame, glass and hardware that suit your energy‑saving targets and the style of your home in Manchester.
What Drives Double Glazing Prices
Double glazing costs aren’t plucked out of thin air. They come down to a few key choices on materials, glass spec and how awkward the job is on site.
Frame material is a big one. Standard white uPVC is usually the most cost-effective; foiled colours or woodgrain finishes add to the price. Aluminium and timber sit higher up again, especially if you go for thermally broken aluminium or factory-finished timber with longer paint guarantees.
The glass unit itself makes a clear difference. A typical modern spec is a 28mm sealed unit with A-rated, argon-filled, low‑E glass and warm edge spacer bars. Go thicker for better noise reduction or tougher laminated glass for security and you’ll add to the unit price, but you’ll also improve U‑values and comfort.
Profile and design also push costs. Simple casement windows are straightforward. Shaped frames, bays, arches or lots of small openers mean more fabrication time, more waste and more ironmongery, so the price per window goes up.
On site, ease of access matters. Ground-floor swaps with clear access are quick. Upper floors needing scaffold, restricted access, very tight brick reveals or raked openings all increase fitting time and the fixings and sealants we need to use, which shows in the labour figure.
Upgrades and paperwork add some cost but give you something back. Multi-point locking, internally beaded sashes, Q‑LON gaskets and laminated units improve security and draught-proofing. FENSA registration, a proper FENSA certificate number on completion and solid manufacturer warranties add a small premium but protect you if you sell the house or have an issue down the line.
If you pin all this down when you ask for prices – frame material, glass spec, openings, access and certification – you can get like‑for‑like quotes across Leeds glaziers and see exactly what you’re paying for.
Common Add‑On Fees and How to Spot Them
Quotes & Add‑On Fees – What To Watch For
----------------------------------------
On any double glazing quote, ignore the big bold price for a moment and read the line items. Some firms keep the frame price low, then load extras on the back end for things that should have been clear from the start.
Go through the breakdown and look for separate charges for:
- Scaffolding or tower access
- Waste removal and skip hire
- Glazing beads and trims
- Frame preparation and making good
- Electrical work for trickle vents, sockets or alarms
Ask for unit costs in writing – £ per frame for waste, £ per day for scaffolding, £ per socket for electrical work. If they can’t explain an item in plain English, push back or ask for it to be removed. A straight swap of a standard 28mm argon‑filled A‑rated casement with multi‑point locking and internally beaded frames shouldn’t need a list of vague “finishing” fees.
Use photos of every opening and a simple written scope before anyone prices the job: number of windows, type (tilt‑and‑turn, casement, sash), cill details, any damaged plaster, any existing wiring nearby. That removes excuses for “unexpected” extras on the day. If something genuinely changes on site – extra electrical work, extra scaffold lift, additional opening light – insist on a separate, signed variation with its own price before the work is done.
Common fees we see added on:
- Scaffolding – triggered by poor access to upper floors; usually spotted as soon as we see the property.
- Waste charge – for old frames, glass and packaging when skips are tight on space.
- Finishing – making good blown plaster, decorating edges, fitting new trims and Q‑LON gaskets where the old frame was wider.
- Electrical work – moving sockets, security sensors or outside lights fouled by new frames or doors.
On completion, the paperwork should match what you agreed: the final invoice, any signed change orders, and your FENSA certificate number for the replacement windows in, say, Manchester. If the add‑ons don’t line up with the original scope or there’s no written variation, you’re within your rights to question the charge.
Compare Quotes the Easy Way: A Like‑For‑Like Checklist
To compare quotes properly, you need a strict like-for-like checklist before anyone prices the job. That way every glazier is pricing the same scope, not guessing.
Set out, in writing, exactly what you want:
- Frame profile and material: PVCu, aluminium or timber, with any thermal break details.
- Glass spec: A-rated 28mm sealed units, argon-filled, low‑E coating, toughened or laminated where needed.
- Hardware: multi-point locking, handles, hinges, trickle vents.
- Security and finish details: internally beaded, Q‑LON gaskets, colour and any astragal or Georgian bars.
- Installation method: full frame replacement or re-fit, foam and sealant type, making good reveals.
Ask every supplier to:
- Confirm like-for-like material and glass comparisons in writing.
- Give U-values and whole-window energy ratings for the exact configuration they’re quoting, not brochure figures.
- Itemise the price: frames, glass, hardware, fitting, disposal, access (e.g. scaffold), and any extras.
Make sure the quote also includes:
- Warranty terms on frames, sealed units and hardware.
- Lead time to install.
- Who handles site preparation, old frame removal and disposal.
- A revision date and version so you can see if the scope has changed.
- Confirmation you’ll get a FENSA certificate number on completion.
Use your checklist to reject any quote that’s missing measured sizes, glass spec, U-values or hardware details. If a supplier won’t match the spec or put it in writing, their price isn’t one you can rely on for a proper like-for-like comparison in Manchester.
Negotiate Price Without Sacrificing Quality
Once you’ve got a proper like‑for‑like checklist in your hand, you can talk price without guessing. Ask every glazier to quote against the same basics: A‑rated 28mm argon‑filled units with low‑E glass, internally beaded uPVC frames, Q‑LON gaskets, and multi‑point locking as standard.
Get each quote broken down into:
- Labour
- Materials (frames, glass units, hardware)
- Extras (decorative glazing, trickle vents, cills, disposal of old frames)
- VAT
That way you’re pushing on the add‑ons and fitting time, not shaving money off the glass spec or frame quality. Decorative leading, Georgian bars, special colours and rushed fitting dates are the usual places you can trim cost without touching U‑values or security.
Make it clear you expect the same installation standard on any revised price: packers under every fixing point, frames fully sealed with low‑expansion foam and silicone, sashes toe‑and‑heeled correctly, and all vents and drainage paths left clear. Ask for written confirmation that:
- The glass spec (A‑rated, 28mm, argon‑filled, low‑E) isn’t being downgraded
- The hardware stays the same (multi‑point locks, key‑locking handles, fire‑escape hinges where needed)
- The warranty length and cover are unchanged
If a cheaper quote means dropping to thinner units, air‑filled glass, or losing internal beading, walk away. Those cuts show up later as condensation, draughts, and failed units.
Once you’ve agreed a price, get a short written variation or contract that lists:
- Final £ price, including VAT
- Number of windows/doors and opening styles
- Confirmed spec (glass type, frame profile, colour, hardware, Q‑LON gaskets)
- Lead time and fitting date
- Warranty details and FENSA certificate on completion
That keeps everyone honest on site and stops “extras” being added once the job in Manchester is already underway.
Double Glazing Red Flags: High‑Pressure Sales & Unfair Terms
A smooth sales pitch and a chatty rep don’t mean you’re getting a fair deal. The fastest way to turn new A-rated, argon-filled 28mm units into a headache is signing under pressure on a contract you haven’t properly read.
Insist on a written, itemised quote you can take away and look at in your own time. It should spell out:
- Frame material and profile (e.g. uPVC with steel reinforcement)
- Glass spec (A-rated, 28mm sealed unit, low-E coating, argon-filled)
- Hardware (multi-point locking, internally beaded frames, handle type, hinge spec)
- Gaskets and seals (e.g. Q-LON gasket to all opening lights)
- U-values and any agreed tolerance on measurement and fitting
Avoid on-the-spot “today only” prices, countdown offers, or surprise “manager discounts” if you sign there and then. Treat big deposits with caution — a small holding deposit is normal, but not 50% up front on a £6,000 job with nothing in writing.
Refuse quotes that won’t break down costs for frames, glass, labour, disposal, and extras like trickle vents or toughened glass. If they won’t put it in black and white, walk away.
Read every clause on the order form. Be wary of:
- Vague completion dates (“as soon as possible” instead of a clear timeframe)
- Price changes after survey that aren’t tied to a specific, written reason
- Heavy cancellation charges before any survey or manufacturing has started
- Warranty wording that limits liability for poor workmanship or failed sealed units
For a proper job in, say, Manchester, your paperwork should confirm things like FENSA registration on completion and how long the guarantees run on frames, glass and hardware. If any term looks one-sided or you don’t understand how it affects your rights, get independent advice before you sign. It’s better to lose a “special offer” than be stuck with draughty units and a contract that leaves you paying for someone else’s mistakes.
Choose a Double Glazing Installer: Guarantees, Certifications & Aftercare
Choosing a double glazing installer isn’t just about the quote; it’s about the protection and support that sit behind the work. You’ll want clarity on contractual guarantees, how long they last, what they cover, and whether they can be transferred if you sell your home. It’s also important to understand the role of recognised UK certifications and how installers handle ongoing maintenance, remedial work, and response times once your windows and doors are in place.
Guarantees And Warranties
Warranties set out exactly how long your double glazing is covered and what for, so they’re worth reading properly before you sign anything. Check the warranty length in writing, including the start date, any staged cover periods, and the final end date, not just “10 years” on a leaflet.
Ask for clear terms on what voids the warranty – missed services, using the wrong cleaning products, drilling into frames, that sort of thing. Materials should be listed separately, for example:
- uPVC or aluminium frames
- 28mm argon-filled, low‑E A‑rated sealed units
- Seals and Q‑LON gaskets
- Hardware and multi‑point locking systems
Make sure it explains if failed sealed units are repaired or replaced, if labour is included, and how quickly they attend for failed units, draughts or hardware faults. Good firms will outline response times and who you contact if a problem isn’t sorted first visit.
If you plan to sell your home in Leeds later on, confirm if the warranty can be transferred to the new owner and what you need to do to keep it valid, such as basic cleaning and keeping trickle vents clear. Don’t rely on off‑hand promises in the showroom or at the door; insist on a signed contract, with the warranty clauses and exclusions written in, and keep it with your FENSA certificate number so you’ve got everything to hand if you ever need a call‑back.
Industry Certifications Held
If you want the job done properly and signed off, check what industry certifications the installer actually holds and that they match the frames and glass you’re paying for. For uPVC, aluminium or timber frames with 28mm argon-filled A-rated units and low‑E coating, they should be certified to fit that exact frame system and glazing type, not just “windows in general”.
Ask to see proof of FENSA or CERTASS registration and note the registration number. On completion you should get a FENSA certificate with its own certificate number, confirming the installation meets current building regulations for things like U‑values, safety glass and ventilation.
Any decent firm in Manchester will have no problem letting you check:
- Trade body membership (e.g. FENSA, CERTASS, GGF)
- Scope of certification – manufacture, supply, installation
- System-specific training – e.g. chosen profile system, multi-point locking, internally beaded sashes
Make sure documents are in date, traceable back to the issuing organisation and show what products are covered. Compare the quoted energy rating and U‑value against certified test data for the exact 28mm sealed unit, not just a brochure headline.
Ask for test reports or manufacturer data sheets covering thermal performance, acoustic ratings and glazing spec (toughened, laminated, safety zones). Installers should be competent to achieve those ratings on site – correct packers, Q‑LON gaskets fitted continuous, frames square and fully fixed into the substrate.
If certificates are missing, out of date or you only get vague answers, treat it as a warning. Insist on clear, verifiable credentials before you sign anything or hand over a deposit, so you know the job will pass inspection and comply with current building regs.
Aftercare And Maintenance
Once you’re happy the frames and 28mm argon-filled sealed units are right and the installer’s FENSA-registered, you need a clear plan for keeping everything working as it should. Get a written maintenance schedule that sets out simple seasonal checks: wipe and lightly lubricate the Q-LON gaskets, clear the drainage channels along the sills, inspect external silicone joints for gaps, and check hinge and handle screws for tightness on the multi-point locks.
Make sure the guarantee spells out what’s covered and for how long: frame finish, hardware, sealed unit fogging, and any thermal break or seal failure. It should also be clear how quickly they’ll attend a call-out and if you must have routine servicing to keep the guarantee valid.
Ask if the company uses their own trained glaziers for anything beyond basic DIY jobs and if parts and labour are included for an agreed period, for example 10 years on the A-rated glass units and 5 years on handles and hinges. Keep every invoice, service sheet, and FENSA certificate number on file; it’s what the manufacturer or installer will ask for if you ever need a warranty claim.
Sticking to a simple maintenance routine reduces draughts, keeps U-values closer to what was quoted, and helps avoid early failures in hinges, locks, and sealed units.
Frequently Asked Questions
How Long Does Installation Typically Take From Measurement to Completion?
From measure-up to full installation you’re normally looking at 1–4 weeks. We’ll survey and template in a day or two, manufacture the A-rated, argon-filled 28mm units in about 1–3 weeks, then fit everything in half a day to 2 days. We’ll give you clear dates and keep disruption down while we do our FENSA-compliant checks.
Are There Eco-Friendly Glazing Options That Qualify for Incentives?
Yes, there are eco-friendly glazing options that can qualify for grants or tax incentives. You’re generally looking at A-rated, low-e glass in a 28mm argon-filled unit with thermally broken or recycled aluminium frames that meet local U‑value and solar gain limits. We’ll supply test certificates and FENSA paperwork so you’ve got what you need for any rebate scheme.
Can Double Glazing Impact Home Insurance Premiums or Valuations?
Yes, it can nudge both your insurance and your valuation a bit. Insurers sometimes shave premiums if you’ve got modern double glazing with multi-point locking, laminated glass and FENSA certificates, as it cuts burglary and weather‑damage risk. Surveyors may add value for A‑rated 28mm argon‑filled units, but the uplift is usually modest and depends on the area and install quality.
What Maintenance Is Required to Keep Warranties Valid?
You just need to stick to the maintenance set out in the warranty – usually yearly cleaning of frames and glass, checking the rubber seals, and oiling hinges and locks. Use a light silicone or similar recommended lubricant, keep receipts and photos of any work, and don’t use harsh cleaners or do major repairs yourself; get a FENSA-registered or similar technician for anything more involved.
Are There Financing Plans With Deferred Payments or Zero Interest?
Yes, we do work with finance options like deferred payments and 0% interest through selected lenders. It’s all subject to a credit check, and you’ll get a written plan showing the monthly payments, any fees, and what happens if you pay late. We also make sure the finance terms don’t affect your FENSA paperwork or your 10-year guarantee.