VEKA M70 PVCu Windows
A five-chamber PVCu window system, made to measure in Pyle, with PAS 24 security as standard.
- 70 mm, 5 chambers
- Profile
- from 1.2 W/m²K
- U-value
- PAS 24 tested
- Security
- A achievable
- Energy rating
M70 windows, explained
The M70 is VEKA's 70 mm multi-chamber window system and the basis of every PVCu casement, tilt and turn and bay window we make. It replaced the classic Matrix 70 with a fully updated profile that improves thermal performance, security and weather resistance. We fabricate it at our factory in Pyle to your sizes, in white, colour or woodgrain, with the glazing and hardware specified for the energy rating and security you need.
The M70 builds on the qualities that made its predecessor a modern classic. Its 70 mm frame is divided into five internal chambers, which is what gives the window its thermal performance: VEKA publish U-values down to 1.2 W/m²K with double glazing and 0.86 W/m²K with triple glazing, calculated to EN 14351-1. With the right glass and hardware the window achieves a Window Energy Rating of A, and A++ is possible.
Security is designed into the profile rather than added afterwards. The frame is reinforced with steel or aluminium so it stays straight and true for decades, and the system is tested to PAS 24, the industry standard for door and window security, with the capability to meet Secured by Design, the UK police initiative for designing out crime. The M70 is compatible with locks, hinges and handles from all the major hardware manufacturers, including MACO, Yale, DGS, Nico, Fullex and Millenco.
Weather performance is equally well proven: air permeability Class 4, water tightness Class 8A and wind resistance to 2400 Pa. Unlike timber, the frame will not warp, swell or rot, and the only maintenance it needs is an occasional wash.
We make the M70 as fixed lights, side-hung and top-hung casements, tilt and turn windows, and bay and bow arrangements, with a choice of 55, 67 or 80 mm outer frames to suit new build, replacement and bay work. Colours come from the VEKA Variations and SPECTRAL ranges: smooth colours, woodgrain foils, and dual colour with one finish outside and another inside.
Why choose M70 windows
Keeps heat in
Five internal chambers and your choice of double or triple glazing. U-values from 1.2 W/m²K double glazed.
PAS 24 security
Reinforced frames, multi-point locking and PAS 24 certification, with Secured by Design capability.
Proven in weather
Class 4 air permeability, Class 8A water tightness and 2400 Pa wind resistance.
No painting, ever
PVCu will not rot, warp or need repainting. VEKA quote an expected lifespan of 35 years and the profile is recyclable.
Colour and woodgrain
Smooth colours and realistic woodgrains from the Variations range, including dual colour inside and out.
Any style, your sizes
Casement, tilt and turn, fixed, bay and bow, with Georgian bars and decorative options where a period look is wanted.
Thermal performance
Designed around five chambers
Each chamber in the M70 profile traps a pocket of still air between the outside and the room, and the deeper the chamber structure the less heat escapes through the frame. Combined with a warm-edge double glazed unit the window achieves an A rating; with triple glazing the frame U-value falls to 0.86 W/m²K.
We will recommend the glass specification for each elevation, because a north-facing window and a south-facing one do not always want the same unit.
Security
A formidable barrier
The M70 meets PAS 24, the design standard for door and window security, and can be specified to Secured by Design. Metal reinforcement inside the frame, shoot-bolt or espagnolette locking and hinge-side security keep the sash locked into the frame from all sides.
Because the system is compatible with the major hardware brands, trade customers can specify the handles and locks their installations already use.
Styles
Casement, tilt and turn, bay
Side-hung and top-hung casements are the mainstay of British housing. Tilt and turn sashes tip inwards for ventilation and swing fully open for cleaning from inside, which makes them the sensible choice for upper floors and flats. Bay and bow windows are made with structural corner posts and 80 mm frames where the load requires it.
Specifications
Figures are published by the systems manufacturer for the profile system. Performance of a finished window or door depends on size, glazing and hardware; we confirm the specification on your quotation.
Profile
- System
- VEKA M70Source: VEKA plc / NBS Source, M70 casement
- Frame depth
- 70 mm multi-chamber PVC-U (five chambers)Source: VEKA plc / NBS Source, M70 casement
- Outer frame options
- 55 mm, 67 mm or 80 mmSource: VEKA plc / NBS Source, M70 casement
- Casement sash
- 76 mmSource: VEKA plc / NBS Source, M70 casement
- Reinforcement
- Steel or aluminiumSource: VEKA plc / NBS Source, M70 casement
- Maximum sash size
- 1400 × 1400 mm (W × H)Source: VEKA plc / NBS Source, M70 casement
Thermal
- Glazing
- Double or triple glazed unitsSource: VEKA plc / NBS Source, M70 casement
- U-value, double glazed
- Down to 1.2 W/m²K (EN 14351-1)Source: VEKA plc / NBS Source, M70 casement
- U-value, triple glazed
- 0.86 W/m²K (EN 14351-1)Source: VEKA plc / NBS Source, M70 casement
- Window Energy Rating
- A achievable; A++ with suitable glass and hardwareSource: knm-ltd.co.uk existing product page
Weather
- Air permeability
- Class 4Source: VEKA plc / NBS Source, M70 casement
- Water tightness
- Class 8A (E1050)Source: VEKA plc / NBS Source, M70 casement
- Wind resistance
- 2400 PaSource: VEKA plc / NBS Source, M70 casement
Security
- Security standard
- PAS 24 enhanced securitySource: VEKA plc / NBS Source, M70 casement
- Secured by Design
- Capable when appropriately configuredSource: VEKA plc / NBS Source, M70 casement
- Hardware compatibility
- MACO, Yale, DGS, Nico, Fullex, Millenco and othersSource: knm-ltd.co.uk existing product page
Standards
- Profile standard
- BS EN 12608-1+A1:2020Source: VEKA plc / NBS Source, M70 casement
- Certification
- BSI Kitemark; ISO 9001, 14001 and 50001 management systemsSource: VEKA plc / NBS Source, M70 casement
- Environmental
- Expected lifespan 35 years; profile recyclable; Environmental Product DeclarationSource: VEKA plc / NBS Source, M70 casement
Finish
- Colours
- VEKA Variations and SPECTRAL ranges: smooth, coated and woodgrain; dual colour availableSource: VEKA plc / NBS Source, M70 casement
- Opening styles
- Side-hung, top-hung, tilt and turn, fixed, bay and bowSource: KNM Ltd
Fabrication
- Manufactured by
- KNM Ltd, Pyle, BridgendSource: KNM Ltd
- Supply
- Supply only (trade) or supply and install (homeowners, South Wales)Source: KNM Ltd
- Quotation
- Written quotation from your sizes and specificationSource: KNM Ltd
- Profile origin
- Extruded by VEKA in Burnley, LancashireSource: VEKA plc / NBS Source, M70 casement
Colours and finishes
Choose a finish to see it on a frame. Dual colour, one colour outside and another inside, is available on this system.
Casement window elevation, shown in the selected finish
Colours are reproduced as closely as screens allow. Ask for a physical sample before ordering. Availability of individual foils and powder-coat colours is confirmed at quotation.
Configurations
Side-hung casement
Opens outward on side hinges. Available with egress (fire escape) hinges for bedrooms.
Top-hung casement
Hinged at the top for trickle ventilation in rain. Often paired above a fixed pane.
Tilt and turn
Tilts inward from the top for ventilation; turns inward on side hinges for cleaning.
Fixed light
Non-opening glazed frame, used alone or combined with openers in a multi-light window.
Bay and bow
Three or more frames joined on bay posts at 90°, 135° or 150°, or a gentle bow.
Gallery
If you are replacing tired timber or early PVCu windows, the M70 is the window most of our homeowner customers choose. It looks right on everything from a 1930s semi to a new build, in white or in one of the colours and woodgrains that have become popular in South Wales, particularly Anthracite Grey outside with white inside. We measure, manufacture and install, and because the frames are made a few miles away you deal with the people who make them.
You will want to think about three things: the opening style for each room (egress hinges are required for bedroom escape windows), the glass (an A-rated double glazed unit is the usual choice; triple glazing or acoustic glass where noise or heating bills are a concern), and the hardware colour. We will talk you through all of it when we visit.
We fabricate M70 frames for installers, builders and developers, supplied glazed or as frames only, with your specified hardware where it is compatible with the system. Email your schedule with sizes in millimetres (width × height), opening configurations, colour inside and out, glass specification and cill requirements, and we will return a written quotation. Lead times are quoted per order at the time of quotation.
Frames are welded, cleaned and reinforced on site in Pyle. We can supply 55, 67 or 80 mm outer frames, bay posts and couplers, and we hold the common Variations foils. Ask about collection from the factory or delivery within South Wales.
Questions about M70 windows
Should I choose PVCu or aluminium?
Both are good materials and we make both. PVCu is the more economical choice, has excellent thermal performance from its multi-chamber frame, and suits most houses in white, colour or woodgrain. Aluminium is stronger, so it carries larger panes on slimmer frames, and it is powder coated in any RAL colour. For windows and standard patio doors most homeowners choose PVCu; for bifolding and large sliding doors aluminium is usually the better engineering choice. Our guide on PVCu or aluminium goes into more detail.
What is a U-value and what should I look for?
A U-value measures how quickly heat passes through a window or door: the lower the number, the better the insulation. It is expressed in W/m²K. Current Building Regulations in Wales set maximum U-values for replacement windows and doors, and the systems we fabricate all meet them. As a guide, the VEKA M70 achieves down to 1.2 W/m²K double glazed and 0.86 W/m²K triple glazed, and the Smart Visoglide Plus reaches 1.1 W/m²K with upgrade profiles. The glass unit makes the biggest difference, so tell us if heat loss is a priority.
What do PAS 24 and Secured by Design mean?
PAS 24 is the British security standard for doors and windows. A PAS 24 product has passed physical attack tests on the frame, locks and hinges. Secured by Design is the UK police initiative that specifies PAS 24 products together with other measures for new homes. All of the window and door systems we fabricate are PAS 24 tested, and the VEKA and Smart systems are capable of meeting Secured by Design when specified with the appropriate hardware and glass.
Is triple glazing worth it?
Triple glazing lowers the U-value of the whole window and reduces noise, at extra cost and weight. It is worth considering for rooms that are hard to heat, north-facing elevations and houses near busy roads. For most South Wales homes a good A-rated double glazed unit is the sensible choice. The M70, Imagine patio door, Visofold and Visoglide systems all accept triple glazed units, so the option is open on any of our products.
Can I have a different colour inside and outside?
Yes. Dual colour is available on the VEKA PVCu systems (a woodgrain or colour foil outside with white inside is the usual request) and on the Smart aluminium systems, where inside and outside faces can be powder coated in different RAL colours. Tell us both colours when you ask for a quotation.
“KNM were recommended to us so I thought I'd visit their office in Pyle to get a quote. I was shown around the factory which looked impressive and well organised - a good start. Their quote was competitive and I got a good feeling so we went with them. We weren't disappointed. Tony and John worked hard, were professional and cleaned up as they went along. We are very pleased with the windows, one of which is 4.9m in width. The windows are of a high quality, sturdy construction and we would definitely recommend KNM, they ticked all the boxes for us.”
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