Frequently Asked Questions

Find answers to common questions about our window and door installation services

Installation time depends on the number and type of windows. For a standard semi-detached house with 8-10 windows, the process typically takes one to two days. A single window replacement can be completed in 2-3 hours. Larger projects, such as complete window replacement for a detached property with 15-20 units, may require 3-4 days. We provide a detailed timeline during the initial consultation based on your specific requirements and property layout.

We install uPVC, aluminium, and timber windows in various styles including casement, sash, tilt and turn, bay, and bow windows. Our uPVC windows feature multi-chamber profiles with A-rated energy efficiency. Aluminium options include thermally broken frames with powder-coated finishes in over 200 RAL colours. Timber windows are available in hardwood or softwood with factory-applied preservative treatments. All products meet British Standard BS 7950 and carry BFRC certification for energy performance.

Most window replacements fall under permitted development and do not require planning permission. However, listed buildings, properties in conservation areas, or flats require approval from your local authority. If you are changing window styles significantly or altering openings, permission may be needed. We advise checking with your local planning department before proceeding. Our team can provide guidance on Building Regulations compliance, which applies to all replacement windows and requires notification to Building Control or use of a FENSA-registered installer.

uPVC windows are more affordable, require minimal maintenance, and offer excellent thermal insulation through multi-chamber design. They are available in white, woodgrain, or coloured finishes. Aluminium windows have slimmer sightlines, allowing more glass area and natural light. They are stronger, supporting larger panes, and offer superior durability with a lifespan exceeding 45 years. Aluminium requires thermal breaks for energy efficiency and costs approximately 30-40% more than uPVC. The choice depends on your budget, aesthetic preferences, and property style.

Costs vary based on door type, material, and size. A standard uPVC front door with basic glazing starts from £800-£1,200 including installation. Composite doors range from £1,000-£1,800. Aluminium bifold doors for a 3-metre opening cost £2,500-£4,500. French doors in uPVC are priced at £1,200-£1,800, while timber options range from £2,000-£3,500. These prices include removal of existing doors, installation, hardware, and FENSA certification. We provide detailed written quotations with no hidden charges after our free home survey.

All our doors meet Secured by Design standards and include multi-point locking systems with a minimum of 5 locking points. Composite and uPVC doors feature anti-snap, anti-drill, and anti-pick cylinders rated to TS007 3-star standard. Hinges have dog bolts to prevent forced entry. Glazing uses laminated or toughened safety glass conforming to BS EN 356. Aluminium doors include shoot bolt mechanisms and concealed hinges. Optional upgrades include smart locks, integrated alarm systems, and reinforced frames for enhanced protection against break-in attempts.

We provide a 10-year insurance-backed guarantee on all installations, covering both products and workmanship. This warranty is underwritten by an independent insurance provider and remains valid even if our company ceases trading. Manufacturers provide separate guarantees: 10 years on uPVC and composite products, 20 years on aluminium frames, and 5-10 years on timber depending on treatment. Hardware and locks carry a 2-year mechanical guarantee. All installations are FENSA-registered, providing additional consumer protection and Building Regulations compliance certification.

Yes, we specialise in heritage-style replacements for period properties. Our range includes sliding sash windows with authentic detailing, Georgian bars, and traditional hardware. We offer slim-profile uPVC that replicates timber appearance, or genuine hardwood options for conservation areas. Aluminium heritage windows provide modern performance with traditional aesthetics. We can match specific RAL colours, incorporate leaded or stained glass, and replicate original proportions. For listed buildings, we work with conservation officers to ensure compliance while improving thermal efficiency and security.

Clear window sills and surrounding areas of ornaments, curtains, and furniture to provide access. Remove blinds and curtain poles if possible. Ensure a clear path from the street to installation areas for carrying materials. Protect flooring in high-traffic zones, though we use dust sheets throughout. Inform neighbours about the work, as some noise is unavoidable. Arrange for pets to be kept away from work areas. We recommend being present during installation, but this is not mandatory. Our team will conduct a final walkthrough to confirm everything meets your expectations.

Modern A-rated windows can reduce heat loss by up to 75% compared to single-glazed units from the 1970s-80s. Our standard double glazing achieves U-values of 1.2-1.4 W/m²K, while triple glazing reaches 0.8 W/m²K. This translates to annual heating cost savings of £150-£300 for an average three-bedroom house. Low-emissivity coatings reflect heat back into rooms, and argon gas filling between panes provides superior insulation. Energy-efficient windows also reduce condensation, improve comfort by eliminating cold spots, and decrease your carbon footprint by approximately 0.5 tonnes of CO2 annually.

Yes, removal and disposal of existing units are included in our installation service. We carefully remove old windows and doors to minimise disruption and damage to surrounding walls and plasterwork. All materials are sorted for recycling where possible. uPVC, glass, and metals are sent to licensed recycling facilities. Timber is processed for biomass energy or recycling. We hold a waste carrier licence and provide waste transfer notes upon request. The site is left clean and tidy, with all debris removed on the same day. Any minor making good of plaster or sills is completed as part of the installation.

Standard uPVC and composite products typically have a 3-4 week lead time from order confirmation to installation. Aluminium windows and doors require 5-6 weeks due to custom fabrication and powder coating. Timber products take 6-8 weeks, particularly for bespoke designs or specialist finishes. During peak seasons (spring and summer), lead times may extend by 1-2 weeks. We provide accurate timescales after the survey when we know exact specifications. Rush orders can sometimes be accommodated for an additional fee. Once manufactured, we contact you to arrange a convenient installation date.

Yes, we install throughout the year, including winter months. Modern sealants and adhesives are formulated to cure in temperatures as low as -5°C. We work efficiently to minimise the time your property is open to the elements, typically 15-30 minutes per window. Temporary coverings are used if weather conditions require. Installation may be postponed in extreme conditions such as heavy snow, ice, or high winds for safety reasons. Winter installations can be advantageous as you immediately notice improved insulation and reduced draughts. We also tend to have shorter lead times during quieter winter periods.

uPVC and aluminium require minimal maintenance. Clean frames quarterly with warm soapy water and a soft cloth. Avoid abrasive cleaners or solvents. Lubricate hinges, locks, and moving parts annually with light machine oil. Check and clean drainage holes in frames to prevent water accumulation. Timber windows need repainting or re-staining every 4-6 years depending on exposure. Inspect seals and weatherstripping annually, replacing if damaged. Clean glass with standard window cleaner. These simple tasks take 1-2 hours annually and ensure your windows and doors function properly for their full lifespan.

We partner with established finance providers to offer flexible payment plans for projects over £1,000. Options include interest-free credit for 12 months (subject to status) or extended payment terms up to 10 years with competitive APR rates. Applications are processed online with instant decisions in most cases. A deposit of 10-20% is typically required. Finance is subject to credit checks and affordability assessments. We also accept payment by cash, bank transfer, debit card, or credit card. For larger commercial projects, we can arrange staged payments linked to project milestones.

About Hequri

Since 2012, we have been installing windows and doors across London and surrounding areas. Our company started when three experienced installers decided to establish a service focused on precision workmanship and reliable customer relationships.

We began operations in a small workshop in Wandsworth, handling residential projects throughout South London. Within the first year, we completed 87 installations, working primarily with uPVC windows and composite doors. Our approach centered on accurate measurements, proper fitting techniques, and thorough site preparation.

By 2015, we expanded our team to include eight installers and two project coordinators. We added aluminium window systems and bi-fold doors to our offerings, responding to requests from customers in Richmond, Kingston, and Croydon. Each installation follows a documented process: initial site survey, template creation, frame preparation, fitting, sealing, and final adjustment.

Window installation process in London home
12 Years Operating
2,400+ Completed Projects
15 Certified Installers
98% Customer Retention

Our Expertise

Our team holds FENSA certification for window installation and Certass registration for building regulation compliance. We work with Rehau, Veka, and Schüco profiles, maintaining direct supplier relationships that ensure consistent material quality.

Each installer completes ongoing training in thermal efficiency standards, security hardware installation, and drainage system integration. We use laser measuring tools for openings, digital levels for frame alignment, and thermal imaging cameras to verify insulation performance after installation.

Our workshop in Elmfield Road stocks standard profiles and custom-order components. We maintain inventory of weather seals, drainage channels, hinge systems, and locking mechanisms from established manufacturers. This allows us to handle repairs and adjustments without extended waiting periods.

Professional door fitting team at work

Core Principles

Accurate Assessment

We conduct detailed site surveys before quoting. Measurements account for wall irregularities, existing frame condition, and structural requirements. Quotes include itemized costs for materials, labor, disposal, and finishing work.

Installation Standards

Every fitting follows British Standard BS 8213-4 for window and door installation. We document each stage with photographs, verify U-values post-installation, and provide written guarantees covering workmanship for 10 years.

Material Selection

We source products from manufacturers with proven track records in the UK market. Window profiles meet Secured by Design specifications. Door cores achieve minimum 44mm thickness with multi-point locking systems as standard.

Clear Communication

Customers receive installation schedules three days in advance. Our project coordinators provide mobile contact details and respond to queries within four working hours. Post-installation inspections occur within one week of completion.