Window Installation

Frequently Asked Questions?

What does the term 'double glazing' mean?

The term ‘Double glazing’ describes a system where air is trapped in between two sheets of glass inside a window frame which forms a barrier of insulation against draughts and noise. In line with Building Regulations, the optimum gap is 16 mm as anything larger is less effective against sound.

What does uPVC stand for?

uPVC stands for unplasticised polyvinyl chloride, meaning a highly durable, rigid yet low maintenance form of PVC suitable for use in external building products such as windows, doors and rainwater products.

What are the main advantages of using uPVC?

uPVC is extremely strong and hardwearing, performing well in all weather conditions. uPVC windows and doors are also less expensive than timber frame windows, with a greater lifespan and requiring little or no maintenance. Draughts are reduced and heat is kept inside your home, resulting in lower heating bills.

Are uPVC windows and doors a good investment?

As well as making your home look more appealing, potential buyers will take note of the windows and doors when viewing, with uPVC windows being seen as a positive feature of a property. In fact, it has been shown that new windows and doors add value to a property that far exceeds the cost of the installation, making uPVC a very sound investment in your home!

What does the term 'Low E Glass' mean?

Low E Glass stands for ‘low emissivity glass’ and is a unique invisible reflective coating that will make the glass more energy efficient by reflecting the heat from your radiators back into the building, keeping the heat in and reducing your fuel usage. It also lets in light and energy from the sun which is then reflected back into your home. At Hampton Windows &Conservatories we use Pilkington K glass as standard, which is categorised as Low E glass.

What does FENSA stand for?

FENSA stands for the Fenestration Self-Assessment Scheme. It exists to ensure that homeowners receive a certificate of compliance from window, door and conservatory installers on the thermal performance standards of replacement windows and doors. It was created by the Glass and Glazing Federation (GGF) at the request of the Office of the Deputy Prime Minister in response to the current Building Regulations for the UK. All Hampton Conservatories products have FENSA approval.

What does 'Document L' mean?

Document L is the Building Regulations compliance requirement for England and Wales that sets the standards of energy efficiency in buildings and applies to both new build and replacement windows and glazed doors. It specifies the use of a Low E glass as standard in double glazed units so they may have a low U value and be energy efficient.

What are the differences between double glazing companies? Are they all the same?

The double glazing industry has a bad reputation for cheap sales gimmicks, poor customer after care and pushy sales staff, so it is important to find a company who you can trust. You will find that most companies will supply similar products but it’s the installation service which will set the best companies apart from all the rest. At Hampton Windows & Conservatories all our installers are highly skilled professionals and all undertake training to meet the latest standards.

What should I look for when choosing a double glazing company?

Make sure that the company you choose is FENSA registered and that their products are accredited by the British Standards Institute (BSI) and the British Board of Agreement (BBA).

Ensure that a minimum 10 year guarantee for the windows and the installation is included and, if possible ask to see customer reviews of newly fitted windows, doors and conservatories.

What is the window energy rating system?

Much like your household white goods, windows and doors are rated from ‘A’ (the highest, most energy efficient grade) to ‘G’ (the lowest, and least energy efficient). The grade given to a window is based on three factors, heat loss, solar gain and energy lost through air filtration. The Energy Saving Trust recommend a minimum of a ‘C’ grade for modern windows and doors.

Is uPVC sustainable?

Contrary to popular opinion uPVC is a sustainable and environmentally conscious building material. uPVC can also be recycled up to 10 times with no loss of quality or durability. Given that a UPVC window has a lifespan in excess of 40 years, the material could potentially be used for 400 years.

Recycled composite material is incorporated in several of our window and door ranges as a replacement for steel or aluminium. RCM is a sustainable cost-effective alternative that delivers better thermal efficiency than traditional materials.

How secure are uPVC windows and doors?

Windows & Doors from Hampton Windows have been tested to the latest security specifications supported by full SBD (Secure By Design) approval.