Frequently asked questions

Businesses that buy glazing products for their own jobs or clients: installers, builders, developers, landlords, housing providers, shopfitters and maintenance companies. Apply for a trade account to order at trade prices.

No. We supply products to trade customers who install them or employ their own installers.

Email us your schedule, send a photo of it on WhatsApp, or put the details in a trade price request. The guide price tool gives a ballpark figure first.

No. They are guide trade prices, ex VAT and supply only, to help with budgeting. Your price is confirmed on a written quote.

Trade prices on this site are shown excluding VAT. Where VAT applies, it is added at the current rate and shown on your quote and invoice.

No. Delivery is priced separately on your quote according to the delivery postcode and the order.

uPVC windows and doors are typically made in 3 to 4 weeks, aluminium windows and doors in 4 to 5 weeks and steel-look windows in 4 to 6 weeks from a confirmed order. Other products are confirmed when you order.

Made-to-measure items are made to your specification and cannot be returned for a change of mind or wrong measurements. Faulty goods are dealt with under our terms and your legal rights.

Yes. Mainland deliveries run on our standard routes; Highland, island and Northern Ireland deliveries are quoted for the postcode.

We are a trade supplier and do not run a public showroom. Ask us for product information or samples where available.

We can quote products suited to period properties, but the local council decides what is acceptable on listed buildings and in conservation areas. Check with them first.

Not as standard. Fire doors must be certified doorsets, which are a separate specialist product.

Sizes in millimetres (width first), quantities, finishes, glass and options for each item, plus the delivery postcode.

Orders are placed with and invoiced by S&K Property Investments and Improvement Ltd, which trades as Trade Glazing UK.

Each window is made to the frame size you give us, within the limits of the profile and the weight the hinges are rated for. Very large or very small sashes are checked when we price your schedule and we tell you if a layout needs an extra mullion or transom. uPVC casement windows

They can be specified to meet the thermal values in the building regulations for where the job is, with trickle vents, safety glass and escape hinges added where the regulations call for them. Your installer is responsible for any notification or approval the job needs: in England and Wales usually through a competent person scheme; in Northern Ireland through council building control; in Scotland, replacement windows in a house do not normally need a warrant but must meet the standards. uPVC casement windows

On a standard casement the sash sits proud of the frame. On a flush sash it closes into the frame so both faces are level, which gives the look of a traditional timber casement. uPVC flush sash windows

Sometimes. Whether uPVC is acceptable is a planning decision for the local council, so check with them before you order for a property in a conservation area or a listed building. uPVC flush sash windows

Yes. Both sashes tilt inward so the outside of the glass can be cleaned from inside the room. uPVC sliding sash windows

Yes. Tell us the pattern for each sash, for example six over six or two over two, and whether you want bars that look applied or sit between the panes. uPVC sliding sash windows

Yes. The top of the sash tilts inward, hinged at the bottom, for ventilation, or the whole sash turns inward on side hinges to open fully. uPVC tilt and turn windows

Often, yes, because the turned sash gives a large clear opening. Tell us the clear opening you need and the quote shows what the sash gives; your installer confirms it meets the escape requirement. uPVC tilt and turn windows

Thermally broken aluminium windows can be specified to meet the thermal values for replacement windows. Tell us where the job is; the glazing can be specified to suit, and the U-value is stated on your quote. Aluminium windows

They are powder coated, so most RAL colours are available, in matt, satin or textured finishes. Dual colour is also available. Aluminium windows

No. They are slim aluminium windows designed to look like traditional steel windows, with a thermal break for better insulation. Steel-look aluminium windows

Yes. Send the pattern per window, or an elevation drawing, and it is confirmed on your quote. Steel-look aluminium windows

A GRP (glass-reinforced plastic) skin bonded over a solid insulating core, set in a frame with a threshold and hardware. Composite doors

No. Standard composite doors are not fire-rated. If the door is a fire door, for example onto a common stair in a block of flats, it needs a certified fire doorset, which is a different product. Composite doors

Yes, foiled colours and woodgrains are available on one or both sides. uPVC doors

Yes. Glass in doors and side panels is in a critical location under the building regulations, so it is supplied as safety glass. uPVC doors

Either. In the UK most open outward to save room space. Tell us which you need. uPVC French doors

Yes, fixed glazed side panels can be added to one or both sides. uPVC French doors

Two, three or four panes, with one or more sliding panels depending on the layout. uPVC patio doors

You choose. State the sliding panel and the direction it opens, viewed from outside. uPVC patio doors

That depends on the width and how you want the panels to stack. As a rough guide, each panel is up to about a metre wide; we will suggest a layout when you send the opening size. Aluminium bifold doors

Either. Outward folding is more common because it keeps the panels out of the room. Aluminium bifold doors

That depends on the system and glass. We confirm maximum panel sizes and weights when we price your opening. Aluminium sliding doors

Bifolds open almost the whole width; sliders open part of it but keep larger glass panels and slimmer sightlines. Our guide compares the two. Aluminium sliding doors

Yes, panic and emergency exit hardware can be specified. The fire strategy for the building decides what is needed. Aluminium entrance doors

No. We supply manual aluminium doors; automatic operators are a separate specialist product. Aluminium entrance doors

Give us the external size of the finished upstand. The lantern is made to sit on that kerb. Roof lanterns

A lantern in a new extension is part of the extension's building regulations approval. A replacement should meet the thermal requirements for rooflights. Roof lanterns

So rainwater runs off instead of sitting on the glass. The upstand or the unit provides the slope. Flat rooflights

The inner pane is laminated so broken glass stays held together. Flat rooflights

In England and Wales a solid roof usually takes the conservatory out of the building regulations exemption, so building control approval is normally needed. Rules differ in Scotland and Northern Ireland; check locally. Conservatory roofs

That must be checked on site by your installer or an engineer. The roof system is designed around what is there. Conservatory roofs

Measure the glass itself, width then height, with the beads removed. Also measure the overall thickness. Double glazed sealed units

Yes. Give us the size, thickness, glass type and spacer colour of the units you are replacing. Double glazed sealed units

Only if the frames have a deep enough rebate and hardware rated for the extra weight. Most older frames do not. Triple glazed units

It lowers heat loss through the glass and can help with noise. Whether it is worth the extra cost depends on the property and the frames. Triple glazed units

No. It must be cut and processed before toughening. Give us exact sizes and all holes and cut-outs. Toughened safety glass

Building regulations require glazing in critical locations, such as doors, side panels and glazing near floor level, to break safely, be robust or in small panes, or be protected. Toughened or laminated safety glass is the usual way to meet that. Toughened safety glass

Two 3mm panes bonded with a 0.38mm interlayer, a common safety laminate. Laminated and acoustic glass

An acoustic interlayer reduces noise more than standard laminated glass of the same thickness. The overall result also depends on the frame and how the window is fitted. Laminated and acoustic glass

Usually, yes, for a new shopfront or a material change to an existing one. Check with the local planning authority. Aluminium shopfront systems

No. We supply fabricated systems to trade customers for their own teams to install. Aluminium shopfront systems

We supply systems to drawings. Structural design and performance specifications come from the project designer or engineer. Curtain walling systems

No. We supply to trade customers for their own installers. Curtain walling systems

Measure from the centre of the fixing screw to each end, for example 40/45. Window and door hardware

Yes, several cylinders can be supplied to work with the same key. Window and door hardware

Give the depth and the finished length of each cill, including any horns. Cills, trims and accessories

Yes, trims and cills come in the same foils as the windows. Cills, trims and accessories