Ali FOLD Profile | Altegra

Ali FOLD Profile

A stylish new range of high performance aluminium folding doors available in a wide choice of configurations and sizes. With a polyamide thermal break Ali FOLD doors have impressive thermal efficiency and are suitable for both domestic and light commercial new builds and refurbishments.

The Ali FOLD door is a stylish, high performance range of folding aluminium doors. Suitable for both commercial and domestic use, Ali FOLD doors have a polyamide thermal break to give impressive thermal efficiency and are fully compatible with all Senior windows and curtain walling. For maximum daylight a heavy duty version allows leaf sizes of 1300mm x 2400mm with a maximum leaf weight of 125Kg.

Available in an almost unlimited range of colours and finishes both inside and out, Ali FOLD doors have narrow sight lines, are available in a choice of configurations and sizes, and are simple to fabricate using existing tooling.

Further thermal enhancement is available and with a life expectancy in excess of 40 years, the Ali FOLD door range is 100 % recyclable and will easily exceed current and meet future building regulations.

Ali SLIDE Profile PNG@4x (1)

Ali FOLD Profile

  • Technical Specifications

  • Materials

  • Finishes

  • Construction

Typical* Sizes (Standard Duty)

Max Door Leaf Width 1000mm
Max Door Leaf Height 2616mm
Max Weight Per Door Leaf 100Kg

Typical* Sizes (Heavy Duty)

Max Door Leaf Width 1300mm
Max Door Leaf Height 2400mm
Max Weight Per Door Leaf 125Kg

For guidance only - when exceeded please consult our technical department.

Weather Rating

Tested to BS6375-1, BS6375-2 and BS6375-3 Annex A.


Thickness 28mm - 48mm

For thicker options, please consult with our technical department.


Tested in accordance to PAS24, BS 6375-1, BS6375-2 and BS6375-3.

Average U-Values

CEN Standard - Standard

  2000 x 2180mm
28mm Double Glazed Unit 1.64 W/m2K
48mm Triple Glazed Unit 1.21 W/m2K

CEN Standard - Thermally Enhanced

  2000 x 2180mm
28mm Double Glazed Unit 1.61 W/m2K
48mm Triple Glazed Unit 1.19 W/m2K

For glazing specification, please consult with our technical department.

  • All aluminium sections are extruded using Aluminium Alloy 6060 or 6063 T6 to BS EN 755 part 9 2008 or BS EN 12020-2.
  • Polyamide thermal barriers are manufactured in accordance with PA66 GF25.
  • Gasket are manufactured in accordance with BS3734.

Ali FOLD Profile open-in folding sliding door sections are typically available in two finishes...

  • Polyester Powder Coating to BS EN 12206-1: 2004 Part 1 - painted in-house. Surface finish at 40 microns standard, or enhanced to 60 microns for marine environments, in accordance with ISO 9001, ISO 14001 and ISO 18001.
  • Anodised finishes are to BS3897:1991 to a minimum of 25 microns (AA25), supplied in either satin or polished finish in a limited range of colours.

Ali FOLD Profile is constructed using mitred corners, joined with crimped cleats; aligned chevrons assist in clean, accurate mitres. Integral transoms and mullions are scribed around the outer frame and fixed with either screwports or shearblocks.

A proprietary sealant is used on all metal joints in-line with good practice. Opening window frames are designed to be inserted directly into the outer frames using friction stays.

Dual colour available

Our ALI products are available in a wide variety of standard or non-standard colours, including dual colour where you have a choice of the same colour inside and out.

Variety of glass types

Due to the design and nature of our ALI products, we are able to provide an extensive array of customisable glass options for you to choose for your aluminium system.

Made to measure

Every aluminium window system which we design is made to match our customers exact requirements. We have a dedicated in-house team to help with this.

Extensive product range

With our ALI product range, we are able to design standard and bespoke aluminium windows suitable for all types of customers.


Types of doors using Ali FOLD

Explore how Altegra can maximise durability and product lifespan

Learn more about what Altegra Window & Door Systems have to offer by booking a meeting with one of our team members, or by enquiring via the contact form. Once you submit the enquiry form, it will be passed to a member from our team, then they will contact you promptly.


Download our Aluminium Window & Door Systems brochure

Learn more about what Altegra Window & Door Systems have to offer by downloading our free brochure.