

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.

Order A Sample Pack!

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 | Postcodes: PA, PH, DD, AB, IV, & KW | 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
Please ensure you have pre-booked your collection slot before travelling to site.
When arriving to collect your order, please report to a member of our Warehouse Team who will register your arrival and locate your goods. Once ready, your items will be picked and brought to your vehicle loading area.
During busy periods, there may be a short wait while our yard team assist other customers or complete other loading tasks. We always do our best to work within your booked collection time.
We respectfully draw your attention to the following important points:
- Loading is ultimately the customer’s responsibility. While our team can assist with mechanical loading using forklifts, we cannot handball items into enclosed vehicles. Customers must ensure their vehicle is suitable and that goods are safely loaded and adequately secured before leaving the premises.
- Sharp sheeting, metal goods, and long/heavy items may pose additional handling risks. Please come prepared with high-quality protective gloves, and any appropriate protection materials to avoid damage to your vehicle or restraints (e.g. ropes or straps). The edges of roofing sheets and metal products can be extremely sharp, and care should be taken when handling.
- We strongly recommend that customers bring their own straps, ropes, or other securing materials, as we are unable to provide these at the point of collection.
- If you are unsure of your vehicle’s load capacity, we can advise the approximate weight of your order in advance. It is your responsibility to ensure your vehicle is suitable for transporting the goods safely and legally.
- Cladco will not be held liable for any damage to your vehicle or goods once they have been loaded and leave our premises. Loading assistance is provided entirely at the customer’s own risk.
Click & Collect – Pre-Booking Required
You are welcome to collect your order from either our Okehampton (Devon) or Andover (Hampshire) site. All collections must be pre-booked in advance so your items can be picked, packed and ready for you.
Please do not travel to site without a confirmed collection time, as we cannot guarantee your order will be available.
Once your items are ready, you will receive an email with a link to book your collection slot. Please note, same-day collections are not available and bookings must be made at least two hours in advance.
When you arrive, please bring your order confirmation and follow the signage to the collection area where a member of our team will assist you.