Agrément Certificate
Kingspan TEK® Building System
02/S029
- Product sheet
- 1 (SIP systems)
- Certificate holder
- Kingspan Insulation Ltd
- Originally certificated
- 17 December 2002
- Seventh issue
- 27 September 2021
Issued by British Board of Agrément
Specification
The numbers, and who signed them off.
The Warm Wall is built on the Kingspan TEK® Building System, a panel certificated by the British Board of Agrément since 2002. Below: the certificates themselves, the U-values they meet, and what that buys in wall thickness and floor area.
Certification
Three documents cover the panel at the core of the Warm Wall. Open any of them full size.
UK Technical Assessment
Prefabricated wood-based loadbearing stressed skin panels
UKTA-0836-21/0006
- Dated
- 04 / 01 / 2022
- Product family
- Area 14: wood-based panels
- Manufacturing plant
- Selby, Leeds LS25 6NA
- Extent
- 14 pages, 3 annexes
Issued by British Board of Agrément
UKCA Declaration of Performance
Kingspan TEK Panel
1001.UKDoP.TEK.001
- System of AVCP
- System 1
- Assessment body
- BBA 0836
- Constancy of performance
- UK 0836-CPR-22/P6146
- Designated specification
- UKAD 140022-00-0304
Issued by Kingspan Insulation Ltd
These are component credentials held by Kingspan Insulation Ltd, the panel manufacturer, not by NuaHome. They cover the Kingspan TEK® Building System used in the NuaHome Warm Wall. NuaHome's own system testing is covered on the NuaHome specification.
Independent assessment
Additional supporting documentation: the BRE modelled the flat roof build-up and reported on its U-value and its condensation risk.
Client report · BRE (Building Research Establishment)
U-value and condensation assessment of a new flat roof
- Report number
- P125615-1002
- Date
- 02.04.2024
- Issue
- 1
- Status
- Final
Commissioned from the BRE and issued to Guardian Building Products Ltd., the name the report carries.
Key factors assessed
01
Strength and stability
The panels have adequate strength and stiffness to resist the loads associated with installation and in-service loading.
02
Thermal performance
The system contributes to the overall performance of the wall and roof construction.
03
Condensation
Walls and roofs can adequately limit the risk of surface and interstitial condensation.
04
Behaviour in relation to fire
Constructions including the system can achieve resistance to fire classifications of REI 30 and REI 60 to BS EN 13501-2 : 2016.
05
Resistance to airborne sound
Separating walls used in conjunction with suitable linings and flanking elements can provide sufficient resistance to airborne sound.
06
Durability
A 60-year minimum service life, provided the panels are protected from damage by the external and internal finishes.
Declaration of Performance
Kingspan TEK Panel · 1001.UKDoP.TEK.001 · essential characteristics
| Characteristic | Detail | Performance |
|---|---|---|
| Thermal resistance | R value for composite | 142 mm: 4.85 m²K/W · 172 mm: 6.15 m²K/W |
| Thermal conductivity | λD (W/m·K) | PU core 0.024 · OSB 0.13 · solid timber 0.13 |
| Reaction to fire | RtF | E (15 mm OSB facing) · E (PUR core) |
| Fire resistance | REI 30 | 12.5 mm Type A PB KNAUF, 25 × 38 mm timber batten, TEK panel 142 mm |
| Fire resistance | REI 60 | 15 mm Type F (fire check) PB KNAUF, 25 × 50 mm timber batten, TEK panel 142 mm |
| Mechanical resistance and stability | Wall design load, 142 and 172 mm | Refer to Annex B of UKTA-0836-21/0006 |
| Mechanical resistance and stability | Roof design load, 142 and 172 mm | Refer to Annex B of UKTA-0836-21/0006 |
| Density | Apparent density | OSB facing 650 kg/m³ · PUR core 32–35 kg/m³ |
What is the NuaHome garden home?
Two engineered systems (the Warm Roof and the Warm Wall) delivered as one kit. Pick a part of the cut-away to look into it.
Warm Roof
Warm Wall
Fitted with
NuaHome Warm Roof System
- Ridge cappings to match roof tiles or slates
- Choice of roof tiles or slates in a range of colours
- Standard rainwater systems
- Breathable waterproof membrane over exterior grade plywood
- Structural pre-engineered frame
- Ventilated roof eliminates condensation and mould growth
- 3 layers high performance rigid insulation board (160 mm) as standard, with achievable target U-value enhancements for regional requirements
NuaHome Warm Wall System
featuring the Kingspan TEK® Building System
- Timber battens
- Foil-backed plasterboard
- High performance Kingspan TEK® Building System
- Breathable waterproof membrane
- External finish (render shown)
The whole NuaHome, layer by layer.
Base, wall, roof deck, insulation, membrane and covering all arrive as one engineered kit, which is why the structure is watertight in days. Drag the model to turn it, and select any marker to see what that layer does.
Drag to rotate
NuaHome Warm Roof System
-
Matched to your chosen tiles or slates, so the ridge reads as one continuous line rather than a joint.
-
NuaHome Slate or Esprit Shingle, in a range of colours. Up to 60% lighter than natural slate, with an A-grade fire rating and independent fire and weather testing by the BRE.
-
Laid over the plywood and secured in place. This is the layer that makes the structure watertight within days of the kit arriving.
-
Fixed to the aluminium roof structure once it is secured to the ringbeam, then covered by the membrane.
-
Engineered to your drawings and pre-assembled under factory conditions, then lifted into place and secured to the ringbeam.
-
Three layers of high-performance rigid insulation board as standard: between and over rafters, plus insulated plasterboard. Enhancements are available for regional requirements.
NuaHome Warm Wall System
-
Render, brick slips, brick and masonry, or natural and composite timber, all over a ventilated and drained cavity.
-
The 142 mm structural panel at the core of the Warm Wall. Total wall thickness is 182 mm at 0.18 W/m²K, the figure a 365 mm cavity wall needs to match.
-
An insulated floor build-up prepared to take your finish, over a ground-bearing slab and continuous DPM.
-
Decking or paving set out from the survey datum, which is taken from the outside face of the panel and the edge of the base.
Requirements
Meeting the U-value requirements.
Government and Heritage, gov.ie/housing: Building Regulations, Technical Guidance Document L 2022, Conservation of Fuel and Energy.
Walls
0.18
W/m²K or better
Roof
0.15
W/m²K or better
Floor
0.15
W/m²K or better
01
Meeting these standards with traditional build methods will pose significant challenges. Inevitably lead to wider cavities (150 mm).
02
The use of 100 mm cavities is not explicitly prohibited. However, the improvement of U-values for external walls will be necessary, either with wider cavities or enhanced insulation.
03
High performance PIR insulation, such as Celotex or Kingspan, is viable. These options can achieve better U-values with narrower cavity widths compared to traditional roll insulations.
Exceptional thermal performance.
To reach 0.18 W/m²K a traditional brick build is significantly thicker in build-up. Both walls below meet the same figure.
Probe at 182 mm from the inside face
NuaHome Warm Wall
182 mm
One factory-made panel does the structure and the insulation together.
Traditional brick build
365 mm
Five separate trades, and 183 mm more wall to reach the same figure.
Both walls reach 0.18 W/m²K. Drag the probe, or use the arrow keys.
Six layers. 182 millimetres.
The wall pulls apart as you reach it. Each layer is fabricated and fitted as one engineered assembly, which is how it reaches 0.18 W/m²K at less than half the depth of a cavity wall. Select any layer to see what it does.
Wall depth measured from the outside face of the SIPs panel, excluding the external finish. The 142 mm Warm Wall has been tested to BS EN 1365-1 and classified to BS EN 13501-2.
Exceptional space and capacity.
The Warm Wall allows a 20% improvement in floor space compared with traditional build, on the same external footprint.
Drag to turn
Both rooms sit on the same 5000 × 4000 mm footprint. Only the wall thickness changes.
| NuaHome Warm Wall | Conventional | |
|---|---|---|
| External footprint | 5000 × 4000 mm | 5000 × 4000 mm |
| Internal dimensions | 4449 × 3449 mm | 4094 × 3094 mm |
| Wall thickness | 182 mm | 453 mm |
| Floor area | 15.3 m² | 12.7 m² |
20%
increase in floor space
Finish Options
See it in the finish you want.
Eleven roof colours across two ranges, and six external wall finishes. Change them on the home itself, turn it to see the return, and explode it to see how the finish sits on the system.
Drag to turn
NuaHome Slate · Grey Render · White
Roof covering
The traditional aesthetic of a natural slate with the benefits of modern technology - up to 60% lighter, and without the risk of cracking.
Lightweight, high-grade steel with an Aluzinc coating for strength and resistance. A hidden fix system leaves no nails exposed to corrosion.
External wall finish
Render
Timber cladding
Applied effortlessly, in two colours.
Factory-fitted membrane and battens allow virtually any external wall finish. The ventilated and drained cavity between the panel and the cladding keeps the build-up compliant with building regulations. Colours are indicative on screen; a surveyor brings the physical samples.
Performance
Same U-value. Half the wall.
Walls
0.18
W/m²K
Roof
0.15
W/m²K
Floor
0.15
W/m²K
Building Regulations, Technical Guidance Document L 2022: Conservation of Fuel and Energy.
Both walls: 0.18 W/m²K
The wall gets thinner. The room gets bigger.
Both plans sit on the same 5000 mm × 4000 mm external footprint. Only the wall thickness changes.
20%
more floor space, same footprint
NuaHomeConventional
Wall thickness
182 mm
453 mm
Internal
4449 × 3449
4094 × 3094
Floor area
15.3 m²
12.7 m²
Conventional construction · 453 mm · 4094 × 3094 mm
Why not cavity wall?
01
Skilled labour and good workmanship are a basic requirement for a well-built cavity wall
02
Often requires a greater level of supervision during construction
03
Requires a vertical damp proof course to all openings
04
There is always a risk of moisture reaching the inside, whatever the insulation material
05
Insulation thickness is restricted by the width of the cavity
06
Saturation and settlement of cavity fill reduces thermal performance (thermal bridging)
07
Installation can leave unfilled air pockets, causing cold spots and increasing condensation risk
08
Wall-tie corrosion: cavity insulation makes the outer brick leaf colder and therefore wetter
09
Mortar droppings on wall ties increase the risk of penetrating dampness
Cavity wall, mineral wool
365 mm overall, with skim
Inside face on the left
Cavity wall, rigid board
315 mm overall, with skim
Inside face on the left
Eleven system benefits
1
Fully designed system (thermal and structural), simplifying project management
2
Easy skill set, within the capabilities of existing fenestration installers
3
Part L compliant (June 2022), with easy enhancements if required
4
Far stronger than timber frame, typically five times stronger
5
Features the BBA-accredited Kingspan TEK system
6
Guaranteed continuous U-value, zero cold bridging
7
Comprehensive training and support provided
8
Complete system design and quotes through internal design software
9
100% pre-fabrication: simple installation, reduced labour time (MMC)
10
Established efficient manufacturing with minimal waste
11
Proven rapid build technology
Specification
The numbers a surveyor asks for.
Based on 90° configurations; alternative designs such as angled facets may be achievable. Typical shapes: Edwardian, gable-ended, lean-to and P-shaped, up to 6000 mm.
Corner returns, min350 mm
Standard panel width1200 mm
Panel width between apertures, min200 mm
Flat roof, max5.8 m × 4.5 m
Lantern, max3 m × 2.4 m
Twin lantern separation, min615 mm
Large spans are achieved with the NuaHome Lintel, a cassette system accommodating a standard steel section. For beam sizes C, D and E the cassette increases to 400 mm.
Corner return before any opening, min350 mm
Cassette depth at the head, min300 mm
To incorporate the lintel, min2.4 m
Span chart: click to enlarge. Shown as an example, based on average default loadings for the Warm Roof; guidance should be sought for specific projects.
A choice of VELUX® roof windows or the NuaHome fixed rooflight system. VELUX® windows are fitted in sizes up to 780 mm × 1800 mm.
The eaves beam has a default position of 90 mm from the inside face of the panel, giving 48 mm of external coverage.
Survey datum is measured from the outside of the panel and the edge of the base; suspended finish falls outside this point. A ventilated cavity between the panels and the cladding is required to comply with Building Regulations.
Depending on how close a wall sits to a boundary with an adjacent property, it may also need to resist fire, limiting the spread of fire to or from neighbouring buildings.
- Any side of the building within 1 metre of a boundary needs to be deemed sufficiently non-combustible.
- The area of walls permitted to have reduced or undetermined fire resistance (“unprotected areas” such as window and door openings) depends on how close those elements are to the boundary.
- The 142 mm Warm Wall system has been tested to BS EN 1365-1 and classified to BS EN 13501-2.
You must provide an accurate, level and square platform to erect on. The soleplate has to match the dimensions of the home exactly, and all corners must be square.
Foundation width and length
within 5 mm of the plans
Diagonal measurements
pairs within 5 mm
Top level of the slab
± 5 mm of the design
Before erection
base swept and cleared of debris
What a surveyor works through on site before anything is manufactured.
- Is Planning Permission / Building Control approval required?
- Are there any existing buildings or structures to be demolished?
- Are existing foundations to be considered for re-use, and have the necessary checks been carried out?
- Will the proposed build be situated within 1 metre of a boundary?
- Are cavity trays required, and what type? Consider the type of brick.
- Is there sufficient access to the site for materials and scaffold, and space for a skip?
- Are there obstructions on the ground or to the rear, such as pipes or manhole covers?
- Is the site sloping? Will the base require extra works?
- Consider ventilation requirements, for example air bricks.
- Where will rainwater from the roof discharge, and is there capacity for it?
- Is any boundary wall or fence within the working area sound?
- Are there height restrictions above the proposed build?
- If close to a boundary, consider all datum: roof and gutter projection, and access to apply the external finish.
- Which services (water, drainage and power) need to be run to the building, and from where?
14 checks, all of them before anything is cut.
Range of external finishes
Factory-fitted membrane and battens allow virtually any external wall finish, from render and brick slips to composite and timber cladding. A choice of tiles or slates, in a range of colours, finishes the roof.
Regulation compliance
The Warm Roof was the first LABC-partnered solid roof system. The Kingspan TEK® Building System is certified by the BBA and recognised by major building warranty providers such as Building LifePlans and NHBC. Certified installers partner with the LABC Authority Scheme to maintain building control compliance.
Featuring the BBA-accredited Kingspan TEK® Building System: BBA certificate 02/S029, UK Technical Assessment UKTA-0836-21/0006, held by Kingspan Insulation Ltd.
Component credential, attributed to Kingspan Insulation Ltd. The certificate is held by the panel manufacturer, not by NuaHome.
Need the full documents?
A surveyor will bring the current certificates and the structural calculations for your opening sizes.