Sashed understands that choosing bespoke timber windows and doors is a significant decision, and you may have questions about our products, services, and processes. Our FAQs are here to provide clear, concise answers to the most common queries, helping you feel informed and confident every step of the way.
We’ve covered everything you need to know, from design options and installation details to guarantees and compliance. If you don’t find the answer you’re looking for, our team is always here to help – get in touch!
Our lead time for items we supply and fit is usually 8 to 10 weeks. During the busy summer months, it can stretch to 11 or 12 weeks. Our lead time for supply-only items throughout the year is 8 weeks. We will provide you with a lead time when you request a quote and when placing an order. The lead time only begins once a Purchase Agreement has been signed and your deposit has been received.
This will start when the final design decisions have been made, and the production survey starts. If you have outstanding design decisions or have requested a set of CADs waiting to be signed off, this may delay your lead time.
We set the lead time to take account of many factors during the production and installation process. It is a standard lead time for everyone. We cannot speed it up.
It depends on several factors, like your property type (flat or house). If you are replacing like for like, then you usually do not need planning permission, but you should speak to your local authority. Sashed deals with planning permission applications every day. We offer free help and advice on this process and have also created this handy help guide.
Yes, here is a link to our planning permission page.
Yes. We do not recommend that you put your windows into production before your planning permission is granted. This is because the planning department could make requests up to the last minute of your permission being granted (for example, a change in the glazing specifications). At this point, their requests for changes would be too late if your windows have started to be/have been produced.
Your installation date will be offered to you when your joinery is ready, usually 2-3 weeks before your quoted lead time ends. Our surveyor will confirm this for you upon your production service.
This depends on your individual project size, for example the quantity and size of the windows. But as a general guide, two to four windows can be replaced within a day, with an extra day or two to ‘make good’. Our surveyor will confirm this for you upon your production service.
Rest assured, you will always have a window in and out on the same day. Your property will be secured and weather-covered overnight, ensuring your safety and peace of mind.
Yes, Sashed currently provides three different types of fitting and installation services in London. See our installation page for more details on our premium and building site fitting services.
We take great care to protect your home during the installation process. We can leave protection on the floor and decor protection. We do not leave debris; it will be cleaned up at the end of every day, ensuring your home is left in the same condition as when we arrived.
No, you can leave the keys with them; you can arrange for your keys to be left with our surveyor, also.
All surfaces are covered with dust sheets, and all carpets, flooring, and relevant areas are covered with a self-adhesive film. Please remove loose and delicate items from the working area. In addition, all furnishings and decor will be covered with plastic sheeting.
Please clear away any smaller, delicate items. If the furniture is blocking access to the window or door, please move it. If there are large items, just let us know.
Yes. We will do so unless it requires an expert, in which case we will ask you to arrange it yourself in advance.
Please remove your curtains in advance. We will assist in rehanging upon completion.
We have a zero-to-landfill policy. Your old windows and or doors are fully recycled.
No, the price is the same for both balancing systems.
Yes, our products have a UKCA label to show that they comply with the relevant standards.
Our new windows and doors, including any trim or architrave, are spray-painted to an immaculate standard; there is no need to paint them after they are fitted.
Yes, Sashed offers a range of stains and paints. See our Paints and Finishes page for more details.
Yes of course, we have a showroom in London which is by appointment.
We offer a range of timber types from Accoya to Meranti, Larch, Pine and Oak. See our timber type page for more details on which type suits your needs.
Yes, we have a range of acoustic glazing, which, when used in combination with seals and gaskets built into our window and door frames, creates high-performing acoustic products.
Sashed can usually match any existing windows. To begin the process, we just need pictures of the existing windows.
Although it is possible to use triple glazing in sash windows, there are limitations. We are unable to use cords and weights and instead use spring/spiral balancing. It’s also not usually possible to use triple-glazed sash windows in period properties as the sash box frame is too thick to fit in typical period properties.
Yes, Sashed is registered with FENSA. Our number is 36704. If we install your replacement windows or doors, we will register the installation compliant with FENSA. See our FENSA page for more details.
You will receive a FENSA certificate for replacement windows only. You do not receive a FENSA certificate for any new windows installed into an extension, new opening, or commercial property. Your building regulations company should provide certification/cover for any commercial properties and building regulations. Similarly, your building regulations company or your builders should provide certification/cover for any new openings.
No. This is considered a new dwelling and is therefore not covered by the FENSA scheme.
You will typically receive your FENSA certificate up to 21 days after settling your final invoice. This will be sent in the post directly from FENSA. Please note that we do not hold copies of FENSA certificates and cannot resend them to you. If you need a FENSA certificate, you must contact FENSA directly.
Changing your windows in a listed building is not usually possible unless they are beyond economic repair. For more information, see Category 4 at the bottom of this guide on listed buildings.
Yes, this is sometimes possible and depends on several factors. Please contact us for more details.
U-values vary for each product type. U-values are available on request, simply drop us an email or give us a call,
It may be possible to change certain elements after you have placed the order. However, most things like glass, ironmongery, and timber are ordered within the first few days and are not usually something that can be changed. We will try to accommodate changes where possible, but there may be an associated cost. Please contact your sales manager to discuss installation specifics.
All decisions must be made before placing your order.
Windows are installed to a fully finished standard, with internal surrounding materials included and fully painted. We will leave your walls made good and standard and ready to paint. We do not include any returnable redecoration or external redecoration of walls.
No, we do not. Our products are all designed and made to be fully finished.
Due to the technical nature of the installation of our doors, we do not recommend ‘supply only’ on this product.
We cover London, the South East and the Home Counties.
No. When warm/moist air is trapped inside a property, it will condense on the coolest surface in the room, which happens to be the internal surface of the double-glazed unit.
You can stop condensation by improving airflow and purging moisture from the air:
If these options are not feasible, we encourage you to speak with an independent ventilation specialist such as Venti (www.venti-group.com).
Double-glazing windows will help minimise condensation if there is adequate air ventilation. However, they will not solve the issue alone.
We do not claim that installing double-glazed windows will solve the issue of condensation (if present).
It is a legal requirement to have a DOP, a Declaration of Performance, inside every sealed glazing unit within the United Kingdom.
Yes, it includes all costs. To help the project run smoothly, please organise a permit where possible.
We require payment of 40% of the total Goods and Services upon order. An interim 40% payment is due prior to installation. A final payment of 20% of the total Goods and Services is due upon completion of installation services. For supply-only orders, a deposit of 50% is required upon order, and the remaining 50% is taken prior to collection or delivery. For renovations and restoration services payments are made in four equal payments of 25%. We do not accept cash.
For domestic homes, your deposit is insured by the Independent Warranty Association (IWA). Deposit insurance is a requirement for membership in the FENSA scheme.
Services on commercial premisses do not come with deposit insurance.
Sashed provides ten-year guarantees on everything from wood and paint finishes to ironmongery and glazing – across all products installed by Sashed. Supply-only customers enjoy five years.
If you buy products and have them installed by Sashed in a domestic dwelling (not a commerical property), your guarantee is insured by the Independent Warranty Association (IWA) for the entire ten years at no cost. You will receive a copy of your guarantee and insurance policy when all work is complete, and all our invoices are paid. Should you move, you can pass on your guarantee to the new homeowner.
Yes, we accept all major credit cards and debit cards, including AMEX.
No, payment is via online payment form, debit and credit card or bank transfer.
No, this must be signed digitally. We will send you a digital signature request upon order.
No, your order will not go to production until the purchase agreement is signed. This is for your protection and ours to ensure your goods are fully insured.
