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50mm Upstand Verge Trim Aluminium Flashing Profile Type 791

50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
  • 50mm Verge Trim Aluminium Flashing Profile with Upstand Section Type 791
  • Manufactured in 1.2mm pre-coated white aluminium in 2500m long lengths
  • Can be fitted with a low-expansion foam or a weatherproof silicone mastic sealant
  • Verge Trim Upstand Profile is suitable for newbuild, retrofit and refurbishment projects
  • For external wall insulation systems, thin-coat rendering, waterproofing and weathering
Estimated delivery:
In Stock
£ 68.40
Ex VAT: £ 57.00
  • Brand: WEMICO®
  • Model: WEC791/50 Upstand Flashing
  • Weight: 1.62kg
  • Dimensions: 2,500mm x 50mm x 1.20mm
  • SKU: 50mm - Type 791
  • Product code: P1-3766
  • MPN: 50mm - Type 791

Options available

50mm Aluminium Flashing Upstand Profile Verge Trim Type 791 is an universal flashing profile manufactured in 1.2mm pre-coated white aluminium in 2500mm lengths.

Verge Trim with Upstand has an up-stand that can be pushed under a barge board designed to reduces the need for a mastic seal and removes future maintenance issues.

Flashing Upstand Profile is designed to improve visual appearance of the building and to help prevent the water blowing up and soaking behind the insulation boards.

It can be fitted either with a low-expansion foam or a weatherproof silicone sealant to meet the recommendations of insulation systems manufacturers.

Upstand Verge Trim is suitable for newbuild, retrofit and refurbishment projects in accordance with the most frequently used shapes on buildings.

WEC791 aluminium verge trim with upstand section tend to be stronger than uPVC and provide greater design flexibility than uPVC products.

Larger sizes or custom cut (fabrication) sills can be manufactured to your specific requirements, and powder coated to any RAL colour.

Profiles made from aluminium are 100% recycled with no loss of quality and are the most frequently recovered metal.

Aluminium profiles are distinguished by its outstanding formability and high corrosion resistance.




Dim 'A' (width): 50mm

Length: 2500mm

Thickness: 1.2mm

Material: Aluminium

Finish: Powder coated

Angle: 100 degrees (100°)

Colour: White

Drop: 35mm

Return: 25mm


Verge Trim with Upstand Section Flashing Profile Features:

 · Removes future maintenance issues.

 · Can be pushed under a barge board

 · Reduces the need for a mastic seal

 · Universal flashing upstand profile.

 · Pre-coated 1.2mm thick white aluminium.

 · Manufactured in 2500mm long lengths.

 · Improve the appearance of the building.

 · Used in most conditions requiring the weathering.

 · Provides greater design flexibility than uPVC products.

 · Suitable for newbuild, retrofit and refurbishment projects.

 · Cost effective way to seal the system instead of increasing the roof line.

 · Helps prevent the water blowing up and soaking behind the insulation boards.

 · Outstanding formability and high corrosion resistance.

 · Manufactured from most frequently recovered metal.

 · Stronger than uPVC profiles.

 · Non-corrosive flashing profile.


Aluminium Verge Trim with Upstand Profile Installation Guide:

 · Prepare the surface.

 · Ensure that the area where you'll be attaching the sill extender is clean and free of debris.

 · Apply PVA if needed.

 · Apply low expansion foam.

 · Apply a thin layer of low expansion foam adhesive along the backside of the sill extender where it will come into contact with the wall.

 · Ensure that you apply it evenly to achieve proper adhesion.

 · Adjust the foam gun to ensure that the layer applied is no thicker than 15mm.

 · Applying a thicker layer may result in excessive foam expansion during drying, causing the sill to rise upwards.

 · This is unacceptable, considering the need to maintain a 1-2% slope.

 · Position the sill extender.

 · Carefully position the sill extender in place, pressing it against the wall to allow the foam to adhere to both surfaces.

 · Weight it down.

 · Ensure a secure bond, place a precisely cut piece of 22mm thick OSB board on top of the sill extender.

 · This will help evenly distribute pressure and weigh it down with 3 bricks while the adhesive foam sets.

 · Allow it to dry-follow the manufacturer's instructions for the specific adhesive foam you're using to determine the drying time.

 · Typically, it takes a few hours to set, but it may vary.

 · Check and clean up – after the foam adhesive has fully cured, check the sill extender to ensure it's securely attached.

 · Trim any excess foam that may have expanded out during installation.

 · By following these steps, you should have a securely attached aluminium window sill extender that is sealed and rigid, without creating thermal bridges.

 · Be sure to use proper safety precautions and follow the manufacturer's guidelines for the adhesive foam you choose to use.


*Flashing Over-trim Profiles can be manufactured to Your specific requirements (Custom-cut / made / bend), and powder coated to any RAL colour.

Price on Application (7 - 14 working days fabrication service based on the drawings).


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

*Special Product - Non returnable cancelable.

Available widths from 50mm up to 200mm
Colour White
Length 2500mm
lmetres 2.5
Material Aluminium
Profile Type 791 - Upstand Flashing
Thickness 1.2mm
Width 50mm
Dim A 50mm
Edge profile Square Edge
Finish Powder coated
Durability Lifetime of the building
Shipping method via Courier
Applications EWI - External Wall Insulation
Type WEC791/50
Drop 35mm
Features White powder coated on both sides
Return 25mm (drip nose and up-stand)
Manufacturer Protektor UK® | Wemico®
Angle 100 degrees (100°)

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
50mm Upstand Verge Trim Aluminium Flashing Profile Type 791
£ 68.40