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Summary
Inward opening, triple-glazed timber framed door with optional aluminium cladding.
Inward opening, triple-glazed timber framed door with optional aluminium cladding.
Application
Suitable for modern or traditional low-energy and Passive House-standard homes, refurbishments, retrofits and multi-dwelling developments.
Whether it's converting industrial barns into a contemporary sanctuary or pushing the boundaries of sustainable design in Scandinavian-style passive houses, our projects span every architectural vision.
We work with clients on a wide range of projects throughout England, Wales and parts of Scotland.
Suitable for modern or traditional low-energy and Passive House-standard homes, refurbishments, retrofits and multi-dwelling developments.
Whether it's converting industrial barns into a contemporary sanctuary or pushing the boundaries of sustainable design in Scandinavian-style passive houses, our projects span every architectural vision.
We work with clients on a wide range of projects throughout England, Wales and parts of Scotland.
Description
This triple-glazed timber framed door (alu-clad S309A and timber-only S309T) is a high-performance, energy-efficient inward-opening glazed door.
With optional aluminium cladding, it combines timber warmth with durability and low maintenance. Available as single or double doors, with or without sidelights, it offers design flexibility and excellent thermal insulation.
Based on the P31 frame, it mirrors the S307 outward-opening door in an inward-opening design.
Features and benefits:
- Triple-glazed timber-framed door for outstanding thermal performance and energy efficiency.
- Optional aluminium cladding provides durability, weather resistance, and low maintenance.
- Inward-opening design, sharing the profile and performance of the S307 outward-opening model.
- Available as single or double doors, with or without sidelights.
- Typical U-values of approximately 0.76 W/m²K, suitable for Passive House-standard homes.
- Can be specified with a Juliet Balcony.
- PAS 24 Certified.
Project showcase
The S309 door has been used in seafront Passive House apartment blocks, award-winning SIPS family homes, sensitive barn renovation projects and multiple contemporary passive house projects. Read the Cricket Heritage case study below, or get a taste of the vast array of project applications for this door in the inspiration section of the product page on our website.
Create Something Distinct
Beyond custom dimensions and precision manufacturing, we provide the design flexibility to perfectly express your vision.
From custom shapes and specialized hardware to powder-coated trims and distinct hardware - find the finishes you need, whatever your project specification.
Browse available Door Handles and example Panel Designs for full customisation in your designs.
This triple-glazed timber framed door (alu-clad S309A and timber-only S309T) is a high-performance, energy-efficient inward-opening glazed door.
With optional aluminium cladding, it combines timber warmth with durability and low maintenance. Available as single or double doors, with or without sidelights, it offers design flexibility and excellent thermal insulation.
Based on the P31 frame, it mirrors the S307 outward-opening door in an inward-opening design.
Features and benefits:
- Triple-glazed timber-framed door for outstanding thermal performance and energy efficiency.
- Optional aluminium cladding provides durability, weather resistance, and low maintenance.
- Inward-opening design, sharing the profile and performance of the S307 outward-opening model.
- Available as single or double doors, with or without sidelights.
- Typical U-values of approximately 0.76 W/m²K, suitable for Passive House-standard homes.
- Can be specified with a Juliet Balcony.
- PAS 24 Certified.
Project showcase
The S309 door has been used in seafront Passive House apartment blocks, award-winning SIPS family homes, sensitive barn renovation projects and multiple contemporary passive house projects. Read the Cricket Heritage case study below, or get a taste of the vast array of project applications for this door in the inspiration section of the product page on our website.
Create Something Distinct
Beyond custom dimensions and precision manufacturing, we provide the design flexibility to perfectly express your vision.
From custom shapes and specialized hardware to powder-coated trims and distinct hardware - find the finishes you need, whatever your project specification.
Browse available Door Handles and example Panel Designs for full customisation in your designs.
Product certifications
Color
Beige, Black, Blue, Bronze, Brown, Copper, Cream, Gold, Green, Grey, Ivory, Orange, Pink, Purple, Red, Silver, Turquoise, White, Yellow, Clear, Other
Beige, Black, Blue, Bronze, Brown, Copper, Cream, Gold, Green, Grey, Ivory, Orange, Pink, Purple, Red, Silver, Turquoise, White, Yellow, Clear, Other
Finish
Powder-coated, Textured
Powder-coated, Textured
Material
Wood, Timber, Aluminium
Wood, Timber, Aluminium
Shape
Rectangle
Rectangle
Length
Bespoke
Bespoke
Width
Bespoke
Bespoke
Height
Bespoke
Bespoke
Warranty description
Ten year
Ten year
SKU Code
S309T
S309A
Specification
Classification data
Configuration
Single-leaf, single-action., Double-leaf, single-action., Single-leaf, single-action with sidelights., Double-leaf, single-action with sidelights.
Single-leaf, single-action., Double-leaf, single-action., Single-leaf, single-action with sidelights., Double-leaf, single-action with sidelights.
Performance
-
-
Acoustic performance
33 dB.
33 dB.
Thermal
0.76 W/m²K.
0.76 W/m²K.
Intruder resistance
-
-
Minimum requirement
To PAS 24.
To PAS 24.
Frame
-
-
Materials
Engineered timber.
-
Threshold
Fiber threshold.
Fiber threshold.
Perimeter seals or inserts
Weather seal: EPDM, 21 mm.
Weather seal: EPDM, 21 mm.
Colour
RAL colour.
RAL colour.
Film thickness (minimum)
Coating applicator to determine.
Coating applicator to determine.
Door leaf
-
-
Thickness
82.5 mm.
-
Core
Wood.
Wood.
Panel details
Glazed.
Glazed.
Perimeter seals
Weather seal: EPDM, 21 mm.
Weather seal: EPDM, 21 mm.
Glazing
-
-
Type
48 mm triple glazed, two panes Low-E, argon filled.
48 mm triple glazed, two panes Low-E, argon filled.
Manifestation
Not required., Required.
Not required., Required.
Finish
Sprayed, Teknos Aquatop.
-
Colour
-
-
External
RAL colour., Timber stain, white., Timber stain, grey., Timber stain, clear., Timber stain, light., Timber stain, mid., Timber stain, dark.
-
Internal
As external., RAL colour., Timber stain, white., Timber stain, grey., Timber stain, clear., Timber stain, light., Timber stain, mid., Timber stain, dark.
-
Hardware
ASSA Hinges ASSA (Fix)., Maco espagnolette.
ASSA Hinges ASSA (Fix)., Maco espagnolette.
Materials
-
Engineered timber with aluminium cladding.
Thickness
-
95.1 mm.
Finish
-
Powder coated aluminium cladding.
External
-
RAL colour.
Internal
-
As external., RAL colour.
Additional properties
Air permeability
To EN 12207, Class 4.
To EN 12207, Class 4.
Watertightness
To EN 12208, 7A.
To EN 12208, 7A.
Sustainability data
Contains Red List materials
No
No
Country of material origin
Europe
Europe
Country of product manufacture
Estonia
Estonia
Manufacturing plant location
Mäo, 72751 Järva County, Estonia
Mäo, 72751 Järva County, Estonia
Material
Wood, Timber, Aluminium
Wood, Timber, Aluminium
Carbon dioxide equivalent
Normalized unit
(kg CO₂ eq/kg) A1–A3 ('Production stage') :
2.24
A1–A3 ('Production stage') :
2.24
Declared unit
Certified
A1–A3 ('Production stage') :
84.7
Certified
A1–A3 ('Production stage') :
84.7
Expected Life
50 year
50 year