Golden Ratio Sash Windows and Doors

Windows & Doors
London, Greater London N7 7LL
Get a Free Quote

Golden Ratio Sash Windows and Doors is a windows and doors installer based in Islington, operating from 218 Hornsey Road, N7 7LL.

A homeowner contacting them would typically discuss options for new sash windows, replacement doors, or repairs to existing timber or uPVC frames. They can provide quotations after a site survey to assess access, dimensions, and the condition of the existing framework. Discussions may cover material choices, glazing options for energy efficiency or noise reduction, and the required lead times for manufacture and installation.

One practical thing to ask them is whether they are FENSA-certified, as this ensures their window installations comply with Building Regulations and can be self-certified without needing separate local authority approval.

Services covered

Areas covered

This company is listed in our Islington directory archive.

Contact

Compare with other installers

For more windows and doors installers in this area, browse the Islington directory or the Windows and doors installers service archive. Always get at least three quotes before committing.

Photos

Golden Ratio Sash Windows and Doors
Golden Ratio Sash Windows and Doors
Golden Ratio Sash Windows and Doors

Customer Reviews

No reviews yet — be the first to leave one.

Latest Guides for Windows & Doors

Windows & Glazing

Slim frame aluminium windows for period homes

The defining trade-off with slim aluminium windows is thermal efficiency for sightline width Homeowners restoring a period property often face a difficult choice between preserving the original aesthetic and meeting modern energy standards. Slim aluminium windows offer a way to keep the slender frame profile that matches historic steel or timber designs. The central compromise […]

3 min · 11 Jun 2026
Windows & Glazing

Warm edge spacers, the tiny fix for steamed up windows

Why warm edge spacers stop condensation forming on window edges Condensation on windows is a persistent problem in UK homes, particularly during winter. It forms where the glass meets the frame because that edge is the coldest point on the window surface. Warm edge spacers solve this by raising the temperature at the glass edge, […]

4 min · 11 Jun 2026
Windows & Glazing

New window rules in 2026

New window rules in 2026 came into force on 15 June 2026 If you are planning to replace windows or build a new home in 2026, the rules changed on 15 June. The 2026 update to Part L of the Building Regulations for England took effect on that date, as confirmed by the Ministry of […]

3 min · 11 Jun 2026

More Windows & Doors guides →

Related Guides

In-depth windows & glazing reading.

Windows & Glazing

Are tinted windows worth it for a hot bedroom?

Tinted windows can reduce bedroom heat by up to 80%, but the cost is £200–£600 per window If your bedroom becomes uncomfortably hot in summer, you may be wondering whether tinted windows offer a practical solution. The Building Research Establishment (BRE) reports that the most effective solar-control window films block up to 80% of solar […]

4 min · 11 Jun 2026
Windows & Glazing

Can next door object to my new windows?

The Party Wall etc. Act 1996 does not apply to window replacements – here is what does Many homeowners worry that a neighbour can use the Party Wall etc. Act 1996 to block a window replacement. The Act covers structural works such as building on or near a boundary, and excavations near a neighbour’s foundation […]

5 min · 11 Jun 2026
Windows & Glazing

Why is my double glazing misted between the panes?

Misting between the panes means your sealed unit has failed, here is what that costs and how to fix it If you see mist or fog trapped between the two panes of glass in your double glazing, the airtight seal has failed. That seal is what holds the insulating gas (usually argon) in the gap, […]

5 min · 11 Jun 2026
Windows & Glazing

Do I need trickle vents on replacement windows?

Replacing windows without trickle vents can save you £150–£300 per window but may fail Building Regulations approval When replacing windows, the most searched question is whether you can skip trickle vents to save money. The direct answer is that you can save between £1,500 and £3,000 on a typical 10-window house by choosing non-vented frames, […]

5 min · 11 Jun 2026
Windows & Glazing

Will new windows stop traffic noise at night?

Road traffic noise enters homes mostly through the glazing, not the frame If you are kept awake by the sound of passing vehicles, the glazed area of your window is the main weak point. According to the UK Building Regulations Approved Document E (Resistance to the Sound of Traffic), standard double glazing typically achieves a […]

4 min · 11 Jun 2026
Windows & Glazing

Are slim aluminium frames colder than uPVC?

Slim aluminium frames transfer heat roughly 1.8 times faster than standard uPVC frames, leading to higher heat loss if not thermally broken. If you are choosing new windows and wondering whether slim aluminium frames will make your home colder than uPVC, the short answer is yes they generally will. The material itself is the main […]

4 min · 11 Jun 2026
Browse all guides