# aluminium unifold HI bi fold doors

> Source: http://arkaywindows.com/aluminium-unifold-bi-fold-doors/
> Author: Damon
> Published: 2025-11-10T14:23:21+00:00
> Modified: 2026-06-25T15:02:07+00:00

Unifold HI aluminium bifold doors with slim frames, smooth operation and excellent thermal performance. Manufactured by Arkay Windows.

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# UniFOLD HI
Aluminium Bi-Fold Doors


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### High-Insulation Aluminium Bi-Fold System Engineered for Trade Performance


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# UniFOLD HI Bi-Fold Door


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### High-Insulation Aluminium Bi-Fold System Engineered for Trade Performance


[/nectar_responsive_text][divider line_type="No Line" custom_height="30px"][vc_raw_js]JTNDZGl2JTIwZGF0YS10Zi1saXZlJTNEJTIyMDFLNkFFN1ZBMFkxOTBTRDlSQTVBUTI1UUUlMjIlM0UlM0MlMkZkaXYlM0UlMEElM0NzY3JpcHQlMjBzcmMlM0QlMjIlMkYlMkZlbWJlZC50eXBlZm9ybS5jb20lMkZuZXh0JTJGZW1iZWQuanMlMjIlM0UlM0MlMkZzY3JpcHQlM0U=[/vc_raw_js][/vc_column_inner][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/6" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row type="full_width_background" full_screen_row_position="middle" column_margin="default" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="column_reverse" column_direction_phone="column_reverse" scene_position="center" top_padding="0" bottom_padding="0" left_padding_tablet="8%" constrain_group_4="yes" right_padding_tablet="8%" top_padding_phone="15%" constrain_group_5="yes" bottom_padding_phone="15%" text_color="dark" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" advanced_gradient_angle="0" overlay_strength="0.3" gradient_direction="left_to_right" shape_divider_position="bottom" bg_image_animation="none" gradient_type="default" shape_type=""][vc_column column_padding="padding-15-percent" column_padding_tablet="no-extra-padding" column_padding_phone="no-extra-padding" column_padding_position="left" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" advanced_gradient_angle="0" gradient_direction="left_to_right" overlay_strength="0.3" width="1/2" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" gradient_type="default" column_padding_type="default"][vc_row_inner column_margin="none" column_direction="default" column_direction_tablet="default" column_direction_phone="default" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all"][vc_column_inner column_padding="padding-5-percent" column_padding_tablet="inherit" column_padding_phone="no-extra-padding" column_padding_position="right" column_element_direction_desktop="default" column_element_spacing="0px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" advanced_gradient_angle="0" gradient_direction="left_to_right" overlay_strength="0.3" width="1/1" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" gradient_type="default" column_padding_type="default"][split_line_heading animation_type="line-reveal-by-space" font_style="h3" line_reveal_by_space_text_effect="none" content_alignment="default" mobile_content_alignment="inherit" link_target="_self" text_content="Watch the world unfold. The effortless UniFOLD HI bifold doors from Arkay Windows." text_direction="default"][/split_line_heading][divider line_type="No Line" custom_height="45px"][vc_column_text css="" text_direction="default"]For a revolutionary bifold system designed with the trade in mind, choose our UniFOLD HI bifold doors. Featuring our **snap-in, pre-gasketed glazing bead,** installation is faster, cleaner, and far more efficient on site.

With only 110mm sightlines and a great thermal performance, UniFOLD HI is the perfect choice to create a brighter, more luminous space for any project.[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][vc_column column_padding="padding-10-percent" column_padding_tablet="inherit" column_padding_phone="no-extra-padding" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="0px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" sticky_content="true" sticky_content_functionality="css" sticky_content_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" advanced_gradient_angle="0" gradient_direction="left_to_right" overlay_strength="0.3" width="1/2" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" gradient_type="default" column_padding_type="default"][image_with_animation image_url="9948" image_size="full" animation_type="entrance" animation="None" animation_movement_type="transform_y" hover_animation="none" alignment="" border_radius="none" box_shadow="none" image_loading="default" max_width="100%" max_width_mobile="default"][/vc_column][/vc_row][vc_row type="full_width_background" full_screen_row_position="middle" column_margin="none" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="default" column_direction_phone="default" scene_position="center" top_padding="0" bottom_padding="6%" text_color="dark" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" overlay_strength="0.3" gradient_direction="left_to_right" shape_divider_position="bottom" bg_image_animation="none" shape_type="" gradient_type="default"][vc_column 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column_border_width="none" column_border_style="solid" offset="vc_col-lg-offset-0 vc_col-md-offset-0 vc_hidden-sm vc_hidden-xs"][/vc_column_inner][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="11/12" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" offset="vc_col-xs-12"][split_line_heading animation_type="line-reveal-by-space" font_style="h2" text_color="#ffffff" line_reveal_by_space_text_effect="default" content_alignment="default" mobile_content_alignment="inherit" link_target="_self" text_content="A revolutionary bifold door with innovative designs" text_direction="default"][/split_line_heading][divider line_type="No Line" custom_height="30px"][nectar_responsive_text inherited_font_style="default" text_color="#bcbcbc" text_direction="default"]
UniFOLD HI is a high-performance aluminium bifold system designed for trade installation. It features snap-in pre-gasketed glazing beads and smooth-running roller hardware for reliable, quiet operation and fast assembly.


The system is configurable to project requirements, with inward or outward opening options, multiple layout configurations, adjustable jambs and low threshold options.


Slim thermally broken frames deliver strong thermal performance without compromising on sightlines, making UniFOLD HI suitable for residential and light commercial applications where performance and aesthetics are key.


[/nectar_responsive_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row type="full_width_background" full_screen_row_position="middle" column_margin="none" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="default" column_direction_phone="default" scene_position="center" top_padding="3%" bottom_padding="6%" text_color="dark" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" overlay_strength="0.3" gradient_direction="left_to_right" shape_divider_position="bottom" bg_image_animation="none" shape_type="" gradient_type="default"][vc_column column_padding="padding-12-percent" column_padding_tablet="inherit" column_padding_phone="padding-3-percent" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color="#ddcbb5" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" gradient_direction="left_to_right" overlay_strength="0.3" width="7/12" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" column_padding_type="default" gradient_type="default"][vc_row_inner column_margin="none" column_direction="default" column_direction_tablet="default" column_direction_phone="default" bottom_padding="6%" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all"][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/1" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" offset="vc_col-lg-11 vc_col-md-11 vc_col-xs-12"][split_line_heading animation_type="line-reveal-by-space" font_style="h2" text_color="#000000" line_reveal_by_space_text_effect="default" content_alignment="default" mobile_content_alignment="inherit" link_target="_self" text_content="Premium Finishes, Advanced Security & Outstanding Thermal Efficiency" text_direction="default"][/split_line_heading][/vc_column_inner][/vc_row_inner][vc_column_text css="" text_direction="default"]
UniFOLD HI offers full design flexibility with single or dual RAL powder-coated finishes and colour-matched hardware for a clean, consistent aesthetic. Durable powder coating ensures long-term colour stability and resistance to fading or cracking.


The system is engineered with multipoint locking for enhanced security and is compatible with double or triple glazing. Aluminium profiles provide high strength and durability for demanding site conditions.


Thermal performance options include double glazing from 1.3 W/m²K (BFRC A) and triple glazing from 0.8 W/m²K (BFRC A++), making UniFOLD HI suitable for high-spec residential and commercial projects.


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background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="2/3" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][split_line_heading animation_type="line-reveal-by-space" font_style="h2" text_color="#f8d849" line_reveal_by_space_text_effect="default" content_alignment="default" mobile_content_alignment="inherit" link_target="_self" text_content="A Closer Look at the Design, Performance and Finishing Touches" text_direction="default"][/split_line_heading][/vc_column_inner][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" 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vs_navigation_func="default" vs_navigation_width="regular" vs_navigation_spacing="45px" vs_navigation_mobile_display="visible" vs_tab_spacing="10%" vs_tab_tag="h4" vs_cta_style="see-through" vs_cta_bg_color="default" vs_cta_heading_tag="h6" vs_sticky_aspect="default"][tab icon_family="none" title="Specification" id="1782399708786-4" tab_id="1782399708787-5"][vc_row_inner column_margin="default" column_direction="default" column_direction_tablet="default" column_direction_phone="default" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all"][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="2/3" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][vc_column_text css="" text_direction="default"]

### Specification





FRAME DEPTH
80 mm



GLAZING
25-48mm Units



GLAZING METHOD
Internally Beaded



MINIMUM SIGHTLINE
110 mm



FINISHES
Available in all single and dual RAL Colours and finishes





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### Size limits





MAXIMUM PANEL WIDTH
1200 mm



MAXIMUM PANEL HEIGHT
3000 mm



MAXIMUM PANEL WEIGHT
120 kg





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### Performance





U-VALUE
From 0.8 W/m²K



AIR PERMEABILITY
Class 4



WATER TIGHTNESS
Class E750



WIND RESISTANCE
Class C3



PAS24
PAS24 Option Available



ENHANCED SECURITY
Multi-Point Locking





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### Threshold Height





STANDARD
46.5 mm



LOW
28.5 mm





[/vc_column_text][/vc_column_inner][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/3" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][/vc_column_inner][/vc_row_inner][/tab][tab icon_family="none" title="Download resources and installation guides" id="1782399708846-6" tab_id="1782399708846-4"][vc_row_inner column_margin="default" column_direction="default" column_direction_tablet="default" column_direction_phone="default" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all"][vc_column_inner column_padding="padding-3-percent" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="top-bottom" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/2" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][vc_column_text css=".vc_custom_1756737326748{padding-right: 10% !important;}" text_direction="default"]

### Download brochure


[/vc_column_text][fancy_box box_style="hover_desc" icon_family="iconsmind" image_url="10040" link_new_tab="true" hover_color="accent-color" hover_desc_color_opacity="0.9" hover_desc_hover_overlay_opacity="0.9" icon_position="bottom" box_alignment="left" hover_desc_bg_animation="long_zoom" border_radius="5px" image_loading="lazy-load" color_scheme="dark" secondary_content="here's some awesome text that would only be shown on hover" icon_iconsmind="iconsmind-File-Download" icon_size="34" link_url="http://arkaywindows.com/wp-content/uploads/2026/02/Arkay-Unifold-HI-Brochure.pdf" min_height="320px"]

### Download Unifold HI Brochure


[/fancy_box][/vc_column_inner][vc_column_inner column_padding="padding-3-percent" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="top-bottom" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/2" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" delay="100"][vc_column_text css=".vc_custom_1771848772432{padding-right: 10% !important;}" text_direction="default"]

### Technical manual


[/vc_column_text][fancy_box box_style="hover_desc" icon_family="iconsmind" image_url="10055" link_new_tab="true" hover_color="accent-color" hover_desc_color_opacity="0.9" hover_desc_hover_overlay_opacity="0.9" icon_position="bottom" box_alignment="left" hover_desc_bg_animation="long_zoom" border_radius="5px" image_loading="lazy-load" color_scheme="dark" secondary_content="here's some awesome text that would only be shown on hover" icon_iconsmind="iconsmind-File-Download" icon_size="34" link_url="http://arkaywindows.com/wp-content/uploads/2026/02/Arkay-Windows-UnifoldHI.pdf" min_height="320px"]

### Download technical manual


[/fancy_box][/vc_column_inner][/vc_row_inner][/tab][/tabbed_section][/vc_column][/vc_row][vc_row type="full_width_background" full_screen_row_position="middle" column_margin="none" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="default" column_direction_phone="default" scene_position="center" top_padding="6%" bottom_padding="6%" top_padding_phone="15%" text_color="dark" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" overlay_strength="0.3" gradient_direction="left_to_right" shape_divider_position="bottom" bg_image_animation="none" shape_type="" gradient_type="default"][vc_column column_padding="padding-12-percent" column_padding_tablet="inherit" column_padding_phone="padding-3-percent" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color="#f8d849" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" gradient_direction="left_to_right" overlay_strength="0.3" width="7/12" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" column_padding_type="default" gradient_type="default"][nectar_responsive_text inherited_font_style="default" text_direction="default"]

# FAQ


[/nectar_responsive_text][divider line_type="No Line" custom_height="33px" custom_height_phone="0px"][toggles style="minimal" accordion="true" accordion_starting_functionality="closed"][toggle color="Extra-Color-3" heading_tag="h4" heading_tag_functionality="default" title="What glazing thicknesses can UniFOLD HI accommodate?"][nectar_responsive_text inherited_font_style="default" font_size_min="14px" font_size_max="20px" font_size_desktop="1.1vw" font_line_height="1.6" text_direction="default"]
UniFOLD HI supports **25–48 mm glazing**, giving installers the flexibility to specify double or triple glazed units depending on thermal, acoustic or project performance requirements.


[/nectar_responsive_text][/toggle][toggle color="Extra-Color-3" heading_tag="h4" heading_tag_functionality="default" title="Is UniFOLD HI suitable for PAS 24 security compliance?"][nectar_responsive_text inherited_font_style="default" font_size_min="14px" font_size_max="20px" font_size_desktop="1.1vw" font_line_height="1.6" text_direction="default"]
Yes — **PAS 24:2016 is available on request**. This makes UniFOLD HI suitable for sites or residential projects where enhanced security compliance is required.


[/nectar_responsive_text][/toggle][toggle color="Extra-Color-3" heading_tag="h4" heading_tag_functionality="default" title="What threshold options does UniFOLD HI offer?"][vc_column_text css="" text_direction="default"]
The system includes **standard and low thresholds**, allowing installers to achieve either accessibility-friendly entrances or seamless internal–external transitions.


[/vc_column_text][/toggle][toggle color="Extra-Color-3" heading_tag="h4" heading_tag_functionality="default" title="What are the maximum panel sizes UniFOLD HI can handle?"][nectar_responsive_text inherited_font_style="default" font_size_min="14px" font_size_max="20px" font_size_desktop="1.1vw" font_line_height="1.6" text_direction="default"]
UniFOLD HI supports **panel widths up to 1200 mm**, **heights up to 3000 mm**, and panel weights up to **120 kg**, providing wide design flexibility for both small and large openings.


[/nectar_responsive_text][/toggle][toggle color="Extra-Color-3" heading_tag="h4" heading_tag_functionality="default" title="What is your adjustable jamb option for?"][nectar_responsive_text inherited_font_style="default" font_size_min="14px" font_size_max="20px" font_size_desktop="1.1vw" font_line_height="1.6" text_direction="default"]
For french configurations, or bifolds 5 panes and above, we would recommend choosing the adjustable jamb option. This allows you to adjust the bifold 4mm either side for peace of mind on site!


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