7 factors that can influence costs
1 T ype of window
White casement UPVC windows are the cheapest type of window to install, with prices ranging from £550 to £1,250. These windows typically have an opening light on the side or top, with a single or pair of opening windows in one frame.
However, the cheapest option may not necessarily be the best choice for your home. Properties vary considerably in terms of style/ period and requirements so you will need to consider the factors relevant to your property and its location. White UPVC windows may not suit the style and age of your property, or may not even be permitted under planning regulations. Your location may mean that environmental factors need to be considered. You may have ‘marine grade’ requirements if you live by the sea, or need specialist noise-reducing windows in a city centre or near a busy road. A good window supplier will advise on these.
2 Triple gl azing
Expect to pay around 30-40% more for triple glazing than double glazing. This is a big cost increase, but should be weighed up against future energy cost savings, which is one of the biggest benefits of triple-glazed windows. They also offer increased sound insulation and the enhanced security that comes with three layers of glass as opposed to two. However, the initial cost outlay may be unattractive when considering the cost of a whole building or renovation project and they do also provide less light penetration than double glazing.
3 replacing existing windows
Removing existing windows is likely to result in some degree of damage to the head or reveals, even if only cosmetic. You may have to get a plasterer or carpenter to make good external masonry or timber cladding and internal finishes. If your old windows are the timber type that provided their own support, you will need to factor in the expense of installing new support in the form of a concrete or steel ‘Catnic’-type lintel.
It is essential to check your quote and specifically verify whether making good is included and what that involves. For example, if you are having new UPVC windows installed, this may include UPVC reveals as opposed to plastering up to the windows, which may be your preferred finish. If so, it may be more cost effective to engage your own plasterer directly.
4 install ation by a supplier
In some construction situations, purchasing an item and then fitting it yourself or through a tradesperson can save you money. However, when it comes to installing new windows, engaging a company to supply and undertake the fitting is almost always the most cost-effective and less risky option.
The indicative costs above for windows in a typical house include the installation element. Even if you could find cost savings by buying secondhand or unwanted new windows to meet your size requirements, you would lose the valuable benefits of guarantees and FENSA certificates that a supply-and-fit service should provide.
5 Comparing quotes
Aim to obtain at least three quotations from reputable companies. When comparing your quotes, it’s important to ensure you’re doing a ‘like for like’ comparison. The quote should make clear whether the following are included and if it’s not clear, seek specific clarification.
● Supplier measurement of windows
● Frame size, style, material and colour
● Glazing type and energy rating
● Window ironmongery
● External window cills
● Supply and installation, including all making good and scaffolding
● Disposal of existing windows
● Warranty/guarantee being provided.
6 Added value of new windows to a home
New windows in your home, if chosen appropriately, will undoubtedly add value, but quantifying this will depend on a number of factors. At the very least, replacing old and damaged windows with more energy-efficient windows will reduce energy costs and be more attractive to a future buyer, before you even consider any aesthetic enhancement to the property. If your property is externally attractive, this can lead to faster sales and increase purchase prices by 5-10%. However, the need to choose appropriately is essential, as cheap UPVC windows could actually reduce the value of a period home.
7 Certification and safet y issues
Remember to obtain a certificate from your installer to confirm they are registered with a Competent Persons Scheme like Certass or FENSA. This means you will have automatic approval for Building Regulations without the need to apply. This certificate should be passed on when the property is sold.
If your property doesn’t currently have a ‘fire escape’ window, this is the chance to include one when replacing windows. While Building Regulations may not require it, it’s a sensible choice and would be attractive to future buyers when selling your property.
To read more about how to choose the right windows for your home, visit www.homebuilding.co.uk