XL Joinery

Tricoya Double Glazed White Siena with Clear Glass - 1981 x 838 x 44mm (33'')

£635.44 £529.53

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Short Description The technology behind Tricoya wood is based on acetylation, a process that has been developed by specialists over decades of research and testing. Acetylation changes elements within the wood, reducing the ability to absorb water and adding stability and durability. The acetyl, which provides these qualities, is naturally present within the wood. The technique used to create Tricoya simply increases the proportion of this vital element. A high-tech solution, but one with outstanding performance benefits.
Door Style External Door - Factory Primed
Specialist Door Type External Door
Finish White Primed
Colour White
Glazing Info 4 Lights With Clear Double Glazed Unts
Door Design Grooved cottage style central panel 4 double glazed panels with low e, toughened glass
Lipping Size Can be trimmed up to 12mm from each edge
Construction Solid engineered core with Tricoya outer face
Brand XL Joinery
Size 1981mm x 838mm x 44mm (33")
Thickness 44

XL Joinery Ltd

How To Install And Care For XL Joinery External Doors


When trimming a door to fit, 12mm can be removed from each edge of the door to a maximum reduction of 24mm in both the height and width. Any reduction must be removed evenly from each edge of the door, e.g. to trim your door by 8mm in width, remove 4mm off each side.

External doors must have a weather bar or rain deflector fitted to ensure that water runs away from the face and bottom edge of the door. Stable doors require a weather bar fitting to both leafs.

A drip bead should be fitted to prevent moisture ingress to the top edge of the door, e.g. fitted to the door frame head.

Three hinges should be used to hang the door. Stable doors require 4 hinges and a weather seal fitted between the 2 leafs. All hardware screw holes should be pre-drilled to prevent splitting of the timber.

Locks should not be fitted adjacent to door mid-rails where the joint may be compromised.

We recommend letter box cut outs are not made through vertical panels as this could lead to moisture ingress and/or failure of the product.

Some glass styles are smooth on one side and obscure on the other: Please check that the obscure glazed faces of multiple doors are orientated in the same direction, e.g. if installing 2 glazed doors side by side.

In areas of severe exposure, external doors should be protected by a canopy or porch in addition to recommended finishing.

Sidelights are supplied with separate instructions for fitting/trimming.


Bare timber doors will require a light sanding prior to finishing.

Take care when finishing glazed doors to ensure that the finish does not go on the glass. Secondary protection such as masking tape may be necessary. 

All timber surfaces must be given a total of three coats of high performance wood-stain or paint. It is important to apply the treatment to the door before final installation.

When applying the finish pay particular attention to sealing the timber end grain on the tops and bottoms of the doors and any grooved areas within the door design: It is recommended that 2 coats of an end grain sealant are used on the top and bottom edges of the door prior to final finishing of the door.

Ensure that all lock, letterbox and hinge cut-outs are also finished to the same degree as visible surfaces.

Failure to treat all the timber surfaces may lead to excessive changes in moisture content which will cause the timber to shrink or swell, possibly causing splits and distortion.

Clear translucent coatings are not recommended as the timber may discolour through UV degradation.

Pre-Finishing Summary


  • Use a ‘High Build’ tinted wood-stain or good quality exterior paint
  • Apply a minimum of 3 coats to all faces and edges (in severe exposure conditions apply extra coats)
  • Apply the same number of coats equally to the face, edge, lock, letterbox and hinge cut-outs
  • Apply at least 1 coat immediately upon unpacking the door
  • Check that paint or stain manufacturers’ product is suitable for veneered / engineered doors.


  • Use thin penetrating seals, oils, wax, dyes, preservatives or hard, brittle varnish finishes
  • Apply stains or paints in damp / wet weather
  • Use thinned / mixed paints or stains
  • Mix incompatible products, e.g. paint on one door face and stain on the opposite face.

To ensure the long life and appearance of the door, all coatings should be wiped down annually to remove any surface pollution. Periodically check the finishing treatment and touch up as necessary. Fully retreat the door every few years as required and depending on degree of exposure.


XL Joinery pride themselves on supplying quality products, and are pleased to offer the following guarantees on their products:

  • 30 Year Manufacturing Defect Warranty on all oak Statement Palermo and oak Statement Suffolk doors
  • 25 Year Manufacturing Defect Warranty on all oak Original Palermo and oak Original Suffolk doors.
  • 10 Year Manufacturing Defect Warranty on all composite door sets and Hardwood, oak, walnut, grey, white primed and pine doors.
  • 1 Year Manufacturer’s Defect Warranty on gates, frames / linings, white moulded Doors and Crysta-Glas.
  • Additional warranties on external Tricoya and Accoya doors. As stated on the product labels.
  • 5 Year Manufacturer’s Defect Warranty on handle packs.

All Guarantees are subject to the door set being prepared, installed and treated in accordance with XL Joinery recommendations for installation, subject to their terms and condition, full details and be found on XL Joinery’s website.

The delivery charges quoted below and in your shopping basket are for deliveries to mainland England and Wales. We will provide a price on application for delivery to Scotland and all UK Islands. We have a right to change delivery costs at short notice.

All costs of delivery include VAT at the national standard rate.

Delivery charges are per brand - if you purchase products from different brands, you will incur separate delivery charges for each brand.

1 door: £48.00
each door thereafter: £6.00 (capped at £72 per delivery excluding surcharges)

Free if purchased with doors of the same brand
£48 if purchased on their own

Folding door systems
Free if purchased with doors of the same brand
£48 if purchased on their own

Skirting, architrave and door linings
Free if purchased with doors of the same brand
£48 if purchased on their own.  Each product thereafter: £6.00 (capped at £72 per delivery excluding surcharges)

Deliveries can take up to 10 working days, depending on postcode.

Deliveries within the London Congestion Charging Zone will incur an £18 surcharge (included in the shopping basket).

Delivery to Scotland and UK island postcodes will incur surcharges - please contact us for a quote.

Unfortunately, we cannot deliver to GY, IM, JE, TR21-25, PO30 - 40 and ROI, but can drop off at a port of your choice.

We offer free delivery for all goods collected from the warehouse.

Click here for more Delivery & Returns information.