Get a Quote
Residential balcony fitted with white UPVC windows

Our Products

A window or door system for every opening — sliding, casement, fixed, awning, tilt & turn, and more.

The Range

Built on one reinforced profile system

Every RENI UPVC product shares the same fusion-welded, steel-reinforced profile — then it's shaped to suit how each opening is used.

White UPVC sliding windows across a residential balcony

Sliding Windows

Smooth-gliding sashes that save space and suit balconies, kitchens and living areas.

White UPVC bay window with multiple opening sections

Casement Windows

Side-hinged sashes that open fully outward for maximum airflow and an unobstructed view.

White multi-panel UPVC window for residential interiors

Fixed Windows

Non-opening glazed panels that maximise natural light for feature walls and tall openings.

White UPVC shutter window installed in an exterior wall

Awning Windows

Top-hinged windows that open outward, letting in fresh air even during light rain.

Grey-framed UPVC sliding windows overlooking a balcony

Tilt & Turn Windows

Dual-function sashes that tilt for ventilation or turn fully open for easy cleaning.

White UPVC double door with glazed upper panels

Sliding Doors

Wide glazed panels that glide open smoothly to connect indoor and outdoor living areas.

White UPVC entrance door with glazed panels

UPVC Doors

Secure, weather-sealed entry doors that combine everyday durability with a clean finish.

Residential building exterior with UPVC window installation

Custom Window Solutions

Shapes, sizes and configurations engineered around openings that don't fit a standard size.

Built In, Not Bolted On

What goes into every RENI profile

The details that determine how a window performs years after installation — not just on the day it's fitted.

Premium UPVC Profiles

Multi-chambered profiles engineered for structural rigidity and thermal insulation.

Fusion Welded Joints

Corners heat-fused into a single frame for a joint that won't loosen or gap over time.

Steel Reinforcement

Galvanised steel inserts add strength to larger sashes and frames, resisting warping.

Sound Reduction

Sealed multi-chamber frames and glazing cut down outside noise for quieter interiors.

EPDM Gaskets

Weather-resistant rubber seals keep glazing airtight through heat, cold and rain.

UV Resistance

Formulated to resist fading and brittleness from prolonged sun exposure.

Drainage / Drain Holes

Purpose-built channels let condensation and rainwater escape instead of pooling.

Weather Sealing

Sealed frame junctions stop draughts, leaks and dust from finding a way in.

Durable Hardware

Multi-point locking hardware built for smooth, secure operation over years of use.

Windows & Doors

Explore our UPVC windows and doors

Switch between windows and doors to see the types, benefits and colour options for each.

White UPVC sliding windows with grills across a residential balcony

Windows for every opening

Sliding, casement, fixed, combination and tilt & turn windows, all built on the same reinforced RENI profile. Mix opening and fixed sections to suit each room.

  • Sliding
  • Casement
  • Tilt & Turn
  • Fixed
  • Bay & Bow
Enquire About Windows

Types of UPVC Windows

Pick the opening style that suits how the space is used.

White UPVC sliding windows with grills across a residential balcony

Sliding Windows

Sashes glide sideways on a track, so nothing swings into the room. A practical choice for balconies, kitchens and wide openings.

White UPVC window with side-hung casement openings above fixed panes

Casement Windows

Side-hinged sashes that open outward for full airflow and a clear view. Fitted with multi-point locking for a tight seal when closed.

Small white UPVC window with four glazed panes

Fixed Windows

Non-opening glazed panels that bring in maximum daylight. Often paired with opening sashes for tall or feature openings.

White multi-panel UPVC window combining opening and fixed sections

Combination Windows

Opening and fixed sections built into one frame, so you get daylight and ventilation where each is needed.

Grey-framed UPVC windows overlooking a balcony

Tilt & Turn Windows

One handle, two actions: tilt the sash for safe ventilation or turn it fully open for easy cleaning from inside.

White UPVC bay window with multiple casement sections

Bay & Bow Windows

Angled or curved frames that project outward, adding light, space and a view along the sides.

White UPVC louvred shutter window in an exterior wall

Awning & Louvred Windows

Top-hinged or louvred designs that keep ventilation going and suit bathrooms, utility areas and sheltered walls.

White UPVC arched and oval windows on a plain wall

Arched & Shaped Windows

Round, oval or arched frames made to measure for openings that need a distinctive shape.

Benefits of UPVC Windows

What you can expect once they are installed.

  • Durability

    Rigid profiles that hold their shape through heat, humidity and daily use.

  • Low maintenance

    No painting or polishing. A wipe now and then is enough.

  • Noise reduction

    Sealed frames with suitable glazing help reduce street noise.

  • Energy efficiency

    Multi-chamber profiles and good glazing help limit heat transfer.

  • Weather resistance

    Gaskets and drainage channels keep rain, dust and draughts out.

  • Security

    Multi-point locking and reinforced frames add confidence.

  • Smooth operation

    Quality hardware keeps sashes gliding or swinging easily.

  • Long service life

    Built to last for years without rotting, rusting or warping.

  • Easy cleaning

    Smooth surfaces clean with soap and water.

  • Modern appearance

    Slim sightlines and clean lines suit contemporary homes.

Window Colour Options

Choose a frame finish to see its name. Final shades are matched to the profile range, so please confirm with our team.

WhiteClassic and bright

Buyer's Guide

Facts To Know Before Buying UPVC

Nine things worth checking before you decide, whichever supplier you choose.

  1. 1

    Profile Quality

    Profile wall thickness, chamber design and UV-stabilised material decide how straight, strong and colour-stable a frame stays. Ask to see the profile cross-section.

  2. 2

    Reinforcement

    Steel reinforcement inside the profile keeps larger sashes from bowing. Ask whether it is galvanised and fitted in every sash and frame that needs it.

  3. 3

    Glass Selection

    Glass type and thickness change insulation, noise reduction, safety and overall performance. Toughened, laminated and double-glazed options each suit different needs.

  4. 4

    Hardware Quality

    Locks, handles, hinges and rollers are what you touch daily. Good hardware stays smooth, aligned and secure for years.

  5. 5

    Installation Quality

    Even a well-made window can underperform if it is poorly fitted. Professional installation ensures proper sealing, alignment and long-term performance.

  6. 6

    Energy Efficiency

    Multi-chamber profiles with suitable glazing can improve thermal performance and help keep rooms more comfortable.

  7. 7

    Sound Insulation

    Suitable glazing and properly sealed frames can help reduce outside noise. Performance depends on glass choice and installation.

  8. 8

    Weather Protection

    Look for gaskets, sealed corners and drainage channels that let rainwater escape. These details keep leaks, draughts and dust out.

  9. 9

    Warranty & After-Sales Support

    Check what the warranty covers, how long it lasts and who to call for service. Good support matters long after installation.

Make It Yours

UPVC Design Options

Choose an opening style, then tune the details. Select options below to build your preferred combination and share it with our team.

White UPVC sliding windows with grills across a balcony

Sliding

Space-saving, wide openings

White UPVC casement window with opening top sashes

Casement

Full airflow, side or top hung

White UPVC fixed four-pane window

Fixed

Maximum light, no opening

White multi-panel UPVC combination window

Combination

Opening plus fixed sections

White UPVC French door with glazed panels

French

Twin-leaf glazed doors

White UPVC patio doors opening to a balcony

Patio

Large openings to outdoors

Opening direction

Glass option

Frame colour

Handle & hardware finish

Configuration by opening size

Your selection

Discuss This Design
Separate From UPVC

ABS Doors

ABS doors are moulded from ABS plastic, a tough, lightweight material. They are a different product from UPVC windows and doors and are commonly chosen for interior areas such as bathrooms, kitchens and utility rooms.

Suitable applications

Bathrooms, toilets, wash areas, utility rooms and other interior openings.

Design & finish

Available in a range of plain and textured designs and colour finishes. Ask our team which are in stock.

Ask About ABS Doors
  • Moisture resistant

    The moulded plastic body does not absorb water the way untreated timber can, which suits bathrooms and wash areas.

  • Termite resistant

    As it is not a wood-based material, termites have nothing to feed on.

  • Low maintenance

    No repainting or polishing. Wipe clean when needed.

  • Easy cleaning

    Smooth, sealed surfaces clean quickly with a damp cloth.

  • Durable

    Holds its shape in everyday indoor use and is lighter than a solid wood door.

Residential home with balcony and window installations

Not sure which system fits your space?

Share a few details about your project and our team will recommend the right window or door system.