

3m Fibre Cement Wall Cladding Asymmetric External Corner Window/Door Trim
Looking to install Cladco fibre cement lap cladding boards around windows and doors? Our aluminium window and door corner trims are designed to make the process cleaner and more secure. These trims help protect external corners while assisting with the precise fitting of fibre cement lap cladding boards around openings, ensuring a neat, professional finish.

Fibre Cement Lap Wall Cladding Window & Door Trim
If your fibre cement lap wall cladding project has existing windows and doors, you may need the Cladco asymmetric external window and door cladding trim.
Our aluminium external window and door trims have been designed to protect the corners of your windows and doors while also assisting the fitting of our fibre cement lap cladding boards around these areas.
Each door and window cladding trim has been designed to be installed on either side of a door or window. The corner of the window or door should slot into the 90° angle section of the aluminium trim.
The flat aluminium edges along both sides of the trim allow for fibre cement lap wall cladding boards to be fitted onto the surface of the trim and to the sides or reveals, of your windows and doors.
Cladco asymmetric window and door trims are easy to install, simply cut the trim to the length, or width, of your window or door and leave enough room to accommodate a windowsill, or step, if necessary, and fix to the window or door using Cladco fibre cement 38mm screws.
Trim specification
Dimensions: 34mm x 13mm x 31mm x 31mm x 26mm x 34mm
Length: 3m
Thickness: 1mm
Weight: 1.53kg approx.
Colour: Black, blue, white, sage green, slate, light grey, granite, and cream
Cladco fibre cement lap wall cladding trims are available in eight colours and are designed to complement the colour of our fibre cement lap wall cladding boards, creating a stylish and seamless design.
Our aluminium trims are manufactured with rust, stain and corrosion-resistant properties to help you create an aesthetically pleasing, long-lasting wall cladding installation.
Looking for an alternative?
For symmetric external corners see our 3m fibre cement wall cladding symmetric external corner trim
Or browse our cladding department for fibre cement cladding and more.
Learn more about the features of Cladco fibre cement lap wall cladding.
Cladco asymmetric window and door trims can be installed onto composite battens using 38mm stainless steel screws. These screws are also available in all eight colours to match our fibre cement wall cladding.
Please note that the actual product may differ from the images provided.

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Download our printable installation guide.
Download the datasheet for 3m Fibre Cement Wall Cladding Asymmetric External Corner Window/Door Trim
Type | When? | Cost? | ||
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National Delivery | Orders under £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£192.00 |
Orders over £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£96.00 | ||
Orders over £1,500 | Est. 5 working days* Roofing items 7-10 working days* |
FREE | ||
Scotland Delivery | Est. 15 working days* Roofing items 7-10 working days* |
£360.00 | ||
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Millboard Delivery | Orders under £2,000 | Est. 5 working days* | £192.00 |
Orders over £2,000 | Est. 5 working days* | FREE | ||
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Parcelforce Standard | (Small Parcels) | 3-5 working days* | £8.50 |
Parcelforce Standard | (Large Parcels) | 3-5 working days* | £30.00 | |
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Sample Packs via Courier | 5 working days* | FREE |
*Please allow for public holidays and weekends (non-delivery days)
Some of our products are available for collection from our warehouses in Okehampton (Devon) and Andover (Hampshire) - This option will show at checkout, when available.
Standard collection lead time is 3-5 working days, this may vary depending on the product. If you would like to collect your order after 2 hours, please choose this option at checkout.
Please note that collections are only available from Monday-Friday, 08:00 - 17:00 & Saturday, 08:00 - 12:30 (Note: this IS the cut off time for collections, despite our closing time of 13:00)
Please Note The Following Prior To Collection:
Vehicles we can and cannot load
Cladco Profiles will only load flatbed lorries and flatbed trailers for insurance purposes. If the appropriate vehicle is not available, two people would be required for a collection.
Cladco Profiles will NOT load any vehicles with roof racks, horse boxes, cattle lorries or fixed-sided trailers. Cladco Profiles has the right to refuse loading a vehicle for any reason.
Before arranging a collection, please read our Customer Collection Notice below.

Our Okehampton HQ and Warehouses (Devon)

Our Andover Warehouses (Hampshire)








Customer Collection Notice
For those customers wishing to collect materials, we ask you report to the office first in order to be seen by a member of the sales team. Your goods will then be picked and brought to your vehicle.
Please note that during busy periods you may experience a wait while our yard staff serve other customers or are loading/unloading other vehicles.
We respectfully draw your attention to the following points:
- It is the ultimately the responsibility of the customer to load his/her vehicle and to ensure the goods are safely/ securely strapped down.
- Our staff will be happy to assist you load your goods onto appropriate vehicles by way of fork lift trucks. Our staff will not handball any goods into enclose vehicles. The loading of the vehicle is carried out entirely at the customers own risk. We will not be held liable for any damage that may occur to your vehicle or goods collected from our premises during the transport of said goods.
- It is the responsibility of the customer to ensure both their vehicle and the goods are safe when they leave our premises.
- We can advise the approximate weight of materials prior to you arriving so that you can be sure your vehicle is capable of carrying the intended load. Please ensure that you bring appropriate ropes, straps or other securing materials as we are unable to provide you with any upon arrival.
- We strongly recommend you bring suitable protection materials to prevent your ropes/straps etc. be damaged by these edges. We recommend that you use good quality protective gloves when handling materials.