How much glass does the Jasper actually let in?

Roughly 9% of the door face is glazed across 8 separate apertures. That is a modest amount, enough to soften a dark hallway without losing much privacy.

Can I choose a different glass design for the Jasper's apertures?

Yes. Neo and Oxford are the two we most often fit in this layout, but the Jasper's apertures accept the full Endurance glass range, from fully obscure privacy glass through to clear or bevelled options if the door doesn't face the street.

Does the Jasper suit a north-facing or naturally dark hallway?

Very well — the 9% glazed area is specifically enough to make a real difference to a dim hallway without a full-glass design.

Endurance Jasper composite door in Anthracite Grey

Shown in Anthracite Grey

Endurance single door · Cornwall

Endurance Jasper composite door

The Jasper is built on Endurance's 48mm solid engineered-timber core, so it stays rigid in Cornish wind and driving rain rather than flexing like a foam-filled slab. Roughly 9% of the face is glazed across 8 apertures, and every unit is fitted with toughened, argon-filled double glazing as standard. Supplied and installed across Cornwall by our own CERTASS-registered fitters, finished in any of the 20 Endurance colours shown on this page.

The Endurance Jasper is a half-glazed door built around 8 glazed apertures, with 9% of the face glazed across 8 separate apertures. That proportion of glass is deliberate rather than decorative: a mid-sized run like this balances daylight against privacy. Every unit is toughened and argon-filled as standard, and the 8-aperture layout is what gives the Jasper its particular rhythm on the door face.

We recommend the Jasper most often for porch replacements, where the half-glazed proportions do more of the visual work than an elaborate glass design would.

Written by Cornwall Composite DoorsReviewed by Cornwall Composite Doors installers

Choose a colour

On-screen colours are rendered from our own studio photography of each door and will vary slightly with your screen. Ask us for a physical colour sample before ordering.

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Configure this door — colour, glass and hardware

Swap the colour, glass design, handle, knocker and letterplate and watch the Jasper update live using Endurance's own product artwork.

Updating…

Live Endurance artwork. Screen colours are indicative — ask us for a physical sample.

Your specification

Door design: Jasper
Colour: White
Glass design: Clarence
Handle: Lever/Lever

Specification

Core: 48mm engineered timber core, 17 laminated layers
Skin: Factory-finished GRP with woodgrain texture
Security: ABS 3-star anti-snap cylinder, multi-point locking, PAS24
Thermal: U-values from 1.2 W/m²K with the standard doorset
Guarantee: 10-year Endurance manufacturer guarantee, colour included
Fitted from: £1,850 supplied and installed in Cornwall

Best suited to

Victorian terraces
Porch replacements
Balanced light and privacy

This is a half glazed design. Anthracite Grey delivers architectural impact and reads sharp against brickwork, render, granite and slate across Cornwall.

Fitted by our own CERTASS-registered installers right across Cornwall — Truro, Falmouth, Newquay, Penzance, St Austell, Bodmin, Camborne, Redruth and every village between.

Reading the Jasper's proportions on a real frontage

With 9% of the face glazed across 8 apertures, the Jasper sits comfortably on victorian terraces — the glazing is proportioned to lift a hallway without turning the entrance into a shop window. On a reclaimed brick elevation the panel lines read as intentional rather than decorative, which matters on the terraced streets around Looe and Camborne where every door on the row is visible from the pavement. If your hallway is genuinely dark, this is one of the better-lit options in the half-glazed category without stepping up to a full-glass design. We would always recommend seeing the Jasper against a working sample of your chosen colour before ordering, since the panel's proportions change how a colour reads compared with a plainer design.

Getting the colour right on the Jasper

The Jasper's 8-aperture glazing pattern photographs well in Grey, where the frame lines around the glass stay crisp rather than disappearing into the panel colour. Slate Grey is the other finish we would put in front of a customer choosing this design — it is muted enough that the glazing, not the door colour, is the first thing you notice on the half-glazed face. For a bolder frontage, Rosewood gives the same proportions a completely different character without changing the layout at all. Whichever you choose, ask to see a physical sample against your own reclaimed brick; screens flatten differences that are obvious in daylight. If you're unsure between two finishes, our configurator lets you preview the Jasper in each of the 21 colours before you commit to a survey.

Hardware and glass options for the Jasper

In the Jasper's apertures, obscure glass such as Neo keeps the hallway private while still passing daylight, and is what we fit as standard unless a customer asks otherwise. Oxford is the better choice where the door faces a garden or a quiet lane rather than the street, since more of the pattern reads as clear. Hardware-wise, a chrome or satin handle set suits the 8-aperture rhythm on a more contemporary elevation, while pewter or black points it towards period streets in Looe. Lead time on the Jasper is the same as the rest of the range — typically four to six weeks from survey to fit, whatever glass and hardware combination you choose.