UVALUES

TecTies cavity wall ties are manufactured from stainless steel which has a thermal conductivity of 17W/Mk Cavity wall ties are usually installed at 900mm horizontal centres and 450mm vertical centres i.e. 2.5 ties/m2 Timber Frame Ties are installed closer and should have an equivalent density of 4.4 ties/m2.

 

U-value calculations to BS EN ISO 6946 BS EN ISO 6946 permits the corrections due to wall ties, air gaps etc. to be omitted, if the corrections amount to less than 3% of the uncorrected U-value of the element.

TecTies Cavity Wall Ties Cross Sectional Areas for U-Value Calculations

TECTIES REFERENCE
TIE LENGTH (mm)
CAVITY WIDTH (mm)
WALL TIES TYPE (BS5628)
AREA (mm2)
TT4 200
50-75
4
4.2
TT4 225 76-100 4 4.2
TT4 250 101-125 4 5.7
TT4 275 126-150 4 6.2
TT2 200
50-75
2
7.1
TT2 225 76-100 2 7.1
TT2 250 101-125 2 8.5
TT2 275 126-150 2 10.2
TT2 300 126-150 2 10.2
TT3 200
50-75
3
5.7
TT3 225 76-100 3 5.7
TT3 250 100-125 3 7.1
TT3 300 125-150 3 8.5
Double Triangle 200
50-75
2
8.5
Double Triangle 225 76-100 2 8.5
Double Triangle 250 100 2 8.5
Double Triangle 300 100 2 8.5
TT1 200
50-75
2
17.7
TT1 225 76-100 2 17.7
TT1 250 101-125 2 17.7
TT1 275 126-150 2 19.6
TT1 300 126-150 2 19.6
TTTF50 125
50
6
9.0
TTTF75 150 75 6 9.0
TTTF100 177 100 6 9.0
TTFCV 125-150 45-94 Varies 38.0
TTFCV 175-200 95-144 Varies 38.0

Tecties, Unit 4 Hurstfield Industrial Estate,
Hague Bar, New Mills, High Peak, SK22 3AT

t: 01663 749361    e: sales@tecties.co.uk

LOCAL STOCKISTS

Tecties, Unit 4 Hurstfield Industrial Estate,
Hague Bar, New Mills, High Peak, SK22 3AT

t: 01663 749361    e: sales@tecties.co.uk

LOCAL STOCKISTS

t: 01663 749361

Tecties, Unit 4 Hurstfield Industrial Estate,
Hague Bar, New Mills, High Peak, SK22 3AT

t: 01663 749361    e: sales@tecties.co.uk

LOCAL STOCKISTS

t: 01663 749361

Tecties, Unit 4 Hurstfield Industrial Estate,

Hague Bar, New Mills, High Peak, SK22 3AT

t: 01663 749361    e: sales@tecties.co.uk

LOCAL STOCKISTS