Reynaers MasterLine 8
Reynaers' slim aluminium window: 77 mm deep and Uf from 1.2 W/m²K.
Reynaers MasterLine 8
With a 77 mm frame depth (sash 87 mm), MasterLine 8 is one of Reynaers' slimmer aluminium window systems. Uf from 1.2 W/m²K: 1.6 in the HI version, 1.1 in HI+ with triple glazing on a 119 mm frame-and-sash section. Sightlines: 53 mm outer frame and 37 mm sash, 97 mm together inward-opening and 118 mm outward-opening; T-section 80 mm. There are four styles (Functional, Renaissance, Deco and Hidden Vent) and separate door versions down to Uf 1.4 W/m²K, including a panel door that takes up to 250 kg and is Passive House certified.
Detail drawings
The manufacturer's drawings, for each version of this profile. They are on the page itself; you can download the PDF below.
Fixed light
Glass straight into the frame, without a sash. For a fixed pane next to a door, a top light or a window that doesn't need to open.
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Tilt and turn window
Turn it in to clean the outside, tilt it to ventilate. Frame and sash together 97 mm in view, on a 77 mm frame depth; as a French casement 161 mm at the joint.
sightline frame + sash 97 mm (77 + 20) · frame 77 mm deep
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Door
Front door, back door or garden door on the same system, also as a panel door.
sightline frame + sash 97 mm (77 + 20) · frame 77 mm deep
Request my quote26 layouts in Reynaers MasterLine 8
From a fixed window to a sliding patio door: every layout this profile can do, each with its own page and a direct way into the configurator.
How much does a Reynaers MasterLine 8 window cost?
Our guide prices come from our own quote history, and this type has not come up in it for this profile. That is why there is no amount. Just request the quote: we work it out on your own sizes.
The price of a MasterLine 8 window depends on four things: the overall size, the layout (fixed, tilt and turn, door), the glass and the colour. If there is an amount above this section, it is a guide price from our quote history — not a quote and not a final price; the configurator itself shows no amount. You put your window together, send it as a request, and the price for your sizes is in the quote — you'll hear from us within three working days. Prices in GBP, excl. UK VAT and import duties, which are payable on delivery. Delivery to the UK is quoted with your offer; hardware and any discount are itemised in the same quote. We supply, we don't install, so there is no fitting cost in it and we don't pass one on.
Configure and request a quoteReynaers MasterLine 8 cross-section — sash in frame and French casement joint
The drawings show the system to scale: vertically through frame and sash, and horizontally through the meeting joint of a French casement. The frame is 77 mm deep; frame and sash together are 97 mm in view. The blue hatched parts are the insulating strips between the outer and inner shell; that is where this profile's Uf comes from.
Vertical section through frame and sash. The frame is 77 mm deep; frame and sash together are 97 mm in view, of which 20 mm is frame and 77 mm sash. The blue hatched parts are the insulating strips between the outer and inner shell.
Horizontal section where two sashes meet with no fixed mullion between them: twice 77 mm with a 7 mm gap, 161 mm in view together. The screw in the middle joins the two profiles.
Reynaers MasterLine 8 specifications
| Material | Aluminium |
|---|---|
| Uf | 1.20 W/m²K |
| Frame depth | 77 mm |
| Outer frame width | |
| Sightline | 97 mm |
| Maximum size | × 3,000 mm |
| Maximum sash width | 1,700 mm |
| Size tolerance | ±2 mm up to 1 m, ±3 mm above that |
Move over the drawing to see the dimensions
The card shows Uf 1.2 W/m²K (the "from" value; HI 1.6, HI+ with triple glazing 1.1 on a 119 mm section), 77 mm frame depth (the outer frame; the sash is 87 mm) and 97 mm sightline (frame and sash together, inward-opening). Figures from the Reynaers system data, supplied to us on 14 September 2026. Doors have their own Uf, down to 1.4 W/m²K. Uf is the profile alone, not the whole-window U-value that Building Regulations ask for.
This is a schematic cross-section, built from the measured frame depth, frame width and sightline. The chamber layout, seals and reinforcement are not measured — they come from the supplier's technical drawing.
The MasterLine 8 compared
Same size, same specification. Only the profile differs.
| Specifications | Reynaers MasterLine 8 | Reynaers ConceptSystem 77 | Aluprof MB-79N |
|---|---|---|---|
| Material | Aluminium | Aluminium | Aluminium |
| Uf | 1.20 | 1.76 | 0.83 |
| Frame depth | 77 mm | 68 mm | 70 mm |
| Sightline | 97 mm | 89 mm | 128 mm |
| Maximum size | × 3,000 mm | × 3,000 mm | 5,000 × 2,700 mm |
| Why something else | Same manufacturer; at 68 to 86 mm the CS 77 sits around the same depth as the 77 mm of the MasterLine 8, with a comparable best Uf of 1.2 W/m²K, but without the separate panel-door version up to 250 kg that the MasterLine 8 does have. | Similar frame depth (70 mm against 77 mm), but a different Uf: 0.83 W/m²K against 1.2–1.9 for the MasterLine 8 — here the Aluprof insulates better. |
Side by side, true to scale
The same scale for all three, so what looks deeper here is deeper.
Where is the MasterLine 8 a good fit?
New build
Suitable. Aluminium is the usual choice once the opening gets larger than uPVC can handle.
Renovation
Suitable.
Listed buildings and conservation areas
Ask your local planning authority first. Aluminium with a slim sightline is sometimes accepted where uPVC is not.
Standards and Building Regulations in the UK
We supply, we don't install, so fitting is your installer's work. In the Netherlands, where we are based, the VKG fitting guidelines for uPVC windows and doors and the KVT guidelines for joinery sit side by side. Both come down to what good practice asks anywhere: the opening has to allow an airtight, watertight, flat and square joint, and the loads on the window have to be carried into the structure through its fixings. Replacing windows in England and Wales is notifiable building work: an installer registered with a competent person scheme (FENSA or Certass, for example) notifies it, or you notify building control before the work starts. Because we don't fit, this sits with your installer — agree it before you order.
Every window placed on the market in the EU carries a CE marking to EN 14351-1: with it, the manufacturer declares that the product meets the essential characteristics in that standard, such as thermal transmittance, air permeability and wind resistance. It is a legal obligation for the manufacturer, not an inspection by an independent body, and on its own it says nothing about UK Building Regulations.
On energy performance: in England, Approved Document L (Volume 1: Dwellings, 2021 edition) requires a replacement window in an existing home to reach a U-value of 1.4 W/m²K or Window Energy Rating band B. For a door that is more than 60% glass the limit is 1.4 W/m²K or DSER band C; for other doors 1.4 W/m²K or DSER band D. A replacement may not perform worse than what it replaces. That U-value is for the whole window (Uw). The Uf on this page is the profile alone and the Ug is the glass alone — neither is the figure Part L asks for. The Uw of your window, at your sizes and with your glass, is stated in your offer. Scotland and Northern Ireland have their own rules.
Documents: data sheet, brochure
- Rovenzia data sheetPDF · 2 kB
- Rovenzia data sheet Reynaers MasterLine 8 (PDF)not yet available
More documents from Reynaers
Reynaers' own documents. We link to them rather than copying them, so you always see the version the manufacturer currently publishes.
Reynaers provides the DWG files through the same download page; they are for the fabricator, not for this page.
Know what you want? Put it together.
No form first: you watch your window take shape as you choose. The price follows in the quote, within three working days.
Frequently asked questions about the Reynaers MasterLine 8
Can you deliver this profile to the UK?
Delivery to the UK is quoted with your offer. Reynaers MasterLine 8 is made to order; production time is 6 to 8 weeks. You enter your postcode when you request a quote. The route always ends with a quote request: no guesswork price, but a quote for your sizes. For this profile that applies in any case: there is no automatic price yet, so your request always goes to the manufacturer for a made-to-measure quote.
What sizes can I order?
Reynaers sets the limits per sash, not per window: a window sash up to 2,800 mm high and 200 kg (300 kg in the heaviest version), a door leaf 500 to 3,000 mm high and 500 to 1,400 mm wide at 250 kg (Reynaers, reynaers.com, 15 September 2026). The widest opening part in our table is therefore 1,400 mm. Reynaers gives no maximum width or height for the complete assembled window — that is still open. The configurator keeps to the sash limit; for a large window, ask us to check the size.
How long does it take?
Production time is 6 to 8 weeks, the same for all our suppliers (our figure as of 15 September 2026). Delivery to the UK is quoted with your offer. The quote itself is quicker: you'll hear from us within three working days of your request; if it takes longer, you'll hear that within the same three working days, with the date it will be ready.
What exactly will I receive?
What you put together in the configurator is what you get: the profile you chose, in your size and layout, with the glass and colour you picked for it. The summary — the last step before your request goes out — lists line by line what is in your order, and anything not listed there isn't included. So you know before you unpack, not after. How and where it is delivered in the UK is set out in your offer.
Do you install it as well?
No. We supply, we don't install. That has one consequence you need to know about: replacing windows in England and Wales is notifiable building work. An installer registered with a **competent person scheme** (FENSA or Certass, for example) notifies it for you; otherwise you notify building control before the work starts. Because we don't fit, this is down to your installer — agree it with them before you order. Scotland and Northern Ireland have their own rules.
Which glass and colours can I choose?
We stock six types of glass: HR++ double glazing (Ug 1.1), triple glazing (HR+++, Ug 0.6), obscure glass in double and triple, and P4A laminated safety glass in double (Ug 1.0) and triple (Ug 0.6). For colour there are solid core colours, dark and other foils for uPVC, and smooth or textured powder coating in RAL colours for aluminium. Which combination is available on this particular profile, the configurator tells you — it refuses a combination that doesn't exist rather than quietly supplying it.
Can I send it back if I change my mind?
No. A window built to your measurements is made to measure, and made-to-measure goods fall outside the right to cancel. We tell you that before you order, not in the small print. In return, we take the risk out at the start: a size guarantee, a sample pack so you can see the colour in your own light, and a fixed procedure if something is damaged on delivery.
What if something is damaged on delivery?
Check it with the driver before you sign, and have any damage noted on the delivery note. Until the window is in your hands, transport damage is **our risk**, not yours. If you still find visible damage when you unpack, report it with photos **within two working days of delivery**. That doesn't cover what you *couldn't* see on delivery: for hidden defects your normal statutory rights on faulty goods apply.
Configure your window or door in Reynaers MasterLine 8
Where we have a guide price, it is on the page, not behind a form — not a quote and not a final price; the amount for your sizes is in the made-to-measure quote.
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