Order a single standard 2d Psi Value Calculation using our standard 10 working day turnaround* service. For multiple junctions please increase the order quantity .
Psi Value calculations are provided in accordance with EN10211 & BR497 to calculate the linear thermal transmittance values, ψ-values, temperature factors, fRsi.
For further information about Psi Value Calculation please visit our Psi Value page.
Suitable Junctions Types**:-
E1 Steel lintel with perforated steel base plate
E2 Other lintels (including other steel lintels)
E3 Sill
E4 Jamb
E5 Ground floor (normal) (this junction should be modelled in 3d)
E19 Ground floor (inverted) (this junction should be modelled in 3d)
E20 Exposed floor (normal)
E21 Exposed floor (inverted)
E22 Basement floor
E6 Intermediate floor within a dwelling
E7 Party floor between dwellings (in blocks of flats)
E8 Balcony within a dwelling, wall insulation continuous
E9 Balcony between dwellings, wall insulation continuous
E23 Balcony within or between dwellings, balcony support penetrates wall insulation
E10 Eaves (insulation at ceiling level)
E24 Eaves (insulation at ceiling level - inverted)
E11 Eaves (insulation at rafter level)
E12 Gable (insulation at ceiling level)
E13 Gable (insulation at rafter level)
E14 Flat roof
E15 Flat roof with parapet
E16 Corner (normal)
E17 Corner (inverted – internal area greater than external area)
E18 Party wall between dwellings
E25 Staggered party wall between dwellings
P1 Party wall - Ground floor
P6 Party wall - Ground floor (inverted)
P2 Party wall - Intermediate floor within a dwelling
P3 Party wall - Intermediate floor between dwellings (in blocks of flats)
P7 Party Wall - Exposed floor (normal)
P8 Party Wall - Exposed floor (inverted)
P4 Party wall - Roof (insulation at ceiling level)
P5 Party wall - Roof (insulation at rafter level)
R1 Head of roof window
R2 Sill of roof window
R3 Jamb of roof window
R4 Ridge (vaulted ceiling)
R5 Ridge (inverted)
R6 Flat ceiling
R7 Flat ceiling (inverted)
R8 Roof to wall (rafter)
R9 Roof to wall (flat ceiling)
R10 All other roof or room-in-roof junctions
R11 Upstands or kerbs of rooflights
How It Works:-
Once your order has been placed, you'll receive a link to submit your files and required information. Once received our thermal modeller with review the information provided. Should they require any further information which is either missing or further clarification is required they will contact you directly. To ensure we can promptly complete your order please ensure you provide ALL required information in the first submission.
Required Information:-
➊ Cross-sectional and/or plan details of drawings of all requested junctions.
➋ Marked up drawings confirming all generic and proprietary materials within the construction build up (including positions, gauges, thicknesses, conductivities).
➌ Details of flanking elements either side of the junction such as the wall, floor or roof.
➍ All drawings files must be DWG and/or DXF format and to 1:1 scale.
➎ For some more complex junctions we may require you to complete a detailed specification sheet to aid in the preperation of the Psi Value should the drawings not include all necessary information.
IMPORTANT INFORMATION
* Please Note. The turnaround times quoted are based upon us being in full receipt of the client providing all necessary modelling information. See "Required Information" for full details.
** Please Note. This is suitable for most masonary or timberframe junctions. Junctions constructed using steel frame or steel columns or beams which penetrate the insulation layer are not suitable. If in doubt please contact us prior to ordering and speak with one of our experts who can take a look at the junction and confirm whether a 2d or 3d model is required.
Price Excludes VAT. This will be added at checkout.