Glazing · Insulation · Renewables · London and the South East
Beautiful windows.
Warmer homes.
Lower bills.
Premium glazing, insulation and home energy, installed by our own team. See your price range in two minutes, then book a survey in the same visit.
- Family-run since 2009
- Our own fitters — no subcontracting on glazing
- Survey fees credited if you go ahead within 90 days
- Price ranges updated 11 October 2026
- Family-run since
- 2009
- Family-run since
- Survey to install
- 6–8 wks
- Survey to install
- To your price range
- 2 min
- To your price range
- Value to slimline
- 4 tiers
- Value to slimline
What can we help with?
ECO4 closes on 31 December 2026 — 73 days left. Funded insulation and heating for eligible households.
Check if you're eligibleWhat we do
One company for the whole home
Windows & doors
REHAU uPVC to Cortizo slimline — casement, sash, steel-look, bifolds, sliders and rooflights.
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Insulation & exteriors
Loft, cavity, internal and external wall insulation, K Rend and brick slip, floors — for every property type.
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Renewables
Solar, batteries, air and ground source heat pumps, EV chargers and air conditioning — with annual servicing.
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Fitted by LINX
Full-height glazed gables overlooking a pool
Our own fitters — we don't subcontract glazing.
Why LINX
A family business that works to a precise standard
A named project manager
One person owns your job from survey to sign-off.
A fixed timeline
6–8 weeks from survey to install for glazing, agreed up front.
Our own building team
In-house builders for openings and making good.
Guarantees, explained
Manufacturer, workmanship and insurance-backed — and what each covers.
Do it online
Price it, plan it, fund it
Instant Quote Builder
Every brand tier side by side, with a live price range.
Sliding patio doors, 3 m
- Value£2,200–£3,800
- Contemporary£5,000–£8,500
- Engineered£6,500–£10,500
- Signature slimline£8,500–£14,000
EPC Check & Upgrade Planner
Every upgrade ranked by value, with the grants that may apply.
Example: 1930s semi-detached
- 1Loft top-up to 270 mm£600–£1,300
- 2Cavity wall insulation£1,200–£2,500
- 3Air source heat pump£10,000–£16,000
60-second grant checker
ECO4, Warm Homes and the Boiler Upgrade Scheme — checked against the current rules.
ECO4Likely / possibly / not eligible
Boiler Upgrade Scheme£7,500 off a heat pump
0% VATEnergy-saving materials
Recent work
Fitted by our own team
Systems we install. Four tiers, from value uPVC to signature slimline aluminium.
Compare brandsHow it works
From first price to final sign-off
Step 1
Get your price range
Pick your product and brand tier online and see a live range in about two minutes.
Step 2
Book your survey
We measure, check the details and confirm a fixed written price. Paid survey fees are credited if you go ahead.
Step 3
Installed by our team
A named project manager and our own fitters — 6–8 weeks from survey for glazing.
Step 4
Looked after for life
Guarantees explained in plain English, and annual servicing for solar, heat pumps and EV chargers.
Grants and savings
Funding that may apply to your home
Scheme rules change often. Our checker uses the current rules and tells you plainly whether you're likely, possibly or not eligible — and what else you can save.
- 73 days
- left to apply for ECO4 funding
- £7,500
- off a heat pump with the Boiler Upgrade Scheme
- 0% VAT
- on insulation, solar, batteries and heat pumps until 31 March 2027
Who we help
From a mid-terrace to a high-rise block
Questions
Straight answers
How much do new windows cost?
A typical casement window (about 1.2 × 1.2 m) is £650–£1,100 each in REHAU uPVC, £1,050–£1,900 each in SMART or AluK aluminium and £1,300–£2,300 each in Schüco, supplied and fitted including VAT. Use the instant quote for your exact sizes — a survey confirms the final figure.
Do you use subcontractors?
No — we don't subcontract glazing. Our own fitters install it, our in-house building team handles openings and making good, and a named project manager looks after your job from survey to sign-off.
How long does installation take?
For glazing, allow 6–8 weeks from survey to installation, agreed up front. Insulation is typically 2–6 weeks from survey and renewables 3–8 weeks, depending on the system.
Could I get a grant?
Possibly. ECO4 can fully fund insulation and heating for eligible households until 31 December 2026, the Boiler Upgrade Scheme gives £7,500 off a heat pump in England and Wales, and energy-saving materials are 0% VAT until 31 March 2027. Our 60-second checker tells you whether you're likely, possibly or not eligible.
Is the survey free?
Surveys to quote for windows, doors and insulation are free. Specialist surveys — such as a heat loss survey for a heat pump — are paid, and the fee is credited against your installation if you go ahead within 90 days.
Begin your project
Get your price range in under two minutes
Choose your product and brand tier and see a live price range. No obligation, and a survey always confirms the final figure.