our range

CONCRETE BLOCKS

 

Dense concrete
blocks 7.3N/mm2

 

Dense concrete
blocks/bricks 10.4N/mm2

 

Dense concrete
blocks 17.5N/mm2

 

Fibotherm insulating
blocks/bricks 3.6N/mm2

 

Stowlite medium dense
blocks/bricks 7.3N/mm2

 

Stowlite medium dense blocks/bricks 10.4N/mm2

 

Hollow and cellular concrete blocks 7.3N/mm2

 

Concrete midi blocks

 

Concrete soap bar blocks

 

T beam flooring system...
first floor T profile blocks

 

T beam flooring system... first floor recessed T profile blocks

 

Generation 2 MACRO blocks

 

Foundation (trench) blocks

 

Padstones

 

Close texture concrete
blocks 7.3N/mm2

 

Stowell 178 blocks
10.4N/mm2 & 7.3N/mm2

 

Stowell 540 blocks
7.3N/mm2

 

Your own block design...

PAVING SLABS

 

Commercial slabs

 

Patio paving and wet
cast edgings

 

Tactile and patterned paving

 

Vintage flagstones...
traditional style decorative flags

KERBS, EDGINGS & CHANNELS

FLOORING PRODUCTS
(T beams)

 

 

Concrete pre-stressed T beams (concrete joists)

 

Stowell solutions for domestic and separating floors

 

Accessories

 

On-site instructions for pre-cast T beams (concrete joists)

PRE-CAST CONCRETE LINTELS

COPING, EDGING & BOLLARDS

 

Edging, bollards & pillar caps

 

Wall coping

CONCRETE FENCING PRODUCTS

 

 

Wetcast fencing products

 

Semi-dry economy fencing

 

Portable post bases

 

Concrete barriers

 

Kentledge blocks
(ballast blocks)

 

Dividing blocks

 Stowlite lightweight
 concrete blocks
7.3N/mm2 to BS EN 771-3

7.3N/mm2 (OVEN-DRY DENSITY approx 1400 kg/m3)
Size mm
nominal
approx
weight kg
no. per
tonne
multiples
of
no. per
pack
440x215x100† 14.0 70 44 88
440x215x140† 19.5 51 32 64
440x215x190‡ 27.5• 36 20 40
Course adjusters        
65x215x100 2.0 500 128 512
65x215x140 2.8 360 96 384
† Also available in close texture 7.3 N/mm2
‡ To order only
• Blocks in excess of 20kg – please use with caution after
assessing the risks.

U-Value 0.22

Stowlite lightweight concrete block - option 1
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Stowlite 7.3N/mm2 (λ 0.61)    0.164
50mm low emissivity cavity    0.640
50mm foil-faced partial fill PIR/PU board (λ 0.022)    2.273
100mm Stowlite 7.3N/mm2  (λ 0.57)    0.175
15mm dabs    0.170
25mm phenolic insulation (λ 0.022)    1.136
bonded to...
13mm plasterboard (λ 0.21)    0.062
Inside resistance    0.130
Sum of resistances    4.809 m2K/W
Uncorrected U-value    0.208 W/m2K
Mortar correction    0.000
Air gap correction    0.010
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.219 W/m2K


U-Value 0.27

Stowlite lightweight concrete block - option 2
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Stowlite 7.3N/mm2 (λ 0.61)    0.164
100mm high performance mineral wool (λ 0.032)    3.125
100mm Stowlite 7.3N/mm2 (λ 0.57)    0.175
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    3.676 m2K/W
Uncorrected U-value    0.272 W/m2K
Mortar correction    0.000
Air gap correction    0.000
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.273 W/m2K


U-Value 0.27

Stowlite lightweight concrete block - option 3
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Stowlite 7.3N/mm2 (λ 0.61)    0.164
50mm low emissivity cavity    0.640
60mm foil-faced partial fill PIR/PU board (λ 0.022)    2.727
100mm Stowlite 7.3N/mm2 (λ 0.57)    0.175
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    3.918 m2K/W
Uncorrected U-value    0.255 W/m2K
Mortar correction    0.000
Air gap correction    0.010
Wall tie correction - Staifix HRT4-250    0.002
U-VALUE    0.267 W/m2K

 
The Stowlite concrete block offers the builder an alternative product midway in the range between the dense concrete block and the high performance Fibotherm block. Stowlite blocks are widely used in a number of applications where high insulation is not such a priority. Being lighter than the standard dense block, handling is easier, often making savings on foundations and labour.

Standard Stowlite blocks provide a good finish for rendering. 100mm and 140mm Stowlite blocks are available in close texture finish, please CLICK HERE for more information..

THERMAL CONDUCTIVITY: λ*
0.57 W/mK* @ 3% m/c (Inside skin)
0.61 W/mK* @ 5% m/c (Outside skin)
THERMAL RESISTANCE:
Size
mm
m2K/W at:
m2K/W at:
100
3%m/c 0.175
5%m/c 0.164
140
3%m/c 0.246
5%m/c 0.230
190
3%m/c 0.333
5%m/c 0.311
(m/c = moisture content)
SOUND INSULATION:**
43dB(A) 100mm single skin, 175kg/m2
45dB(A) 140mm single skin, 235kg/m2
47dB(A) 190mm single skin, 305kg/m2
FIRE RESISTENCE:***
100mm (single skin unplastered) 2 hrs
140mm (single skin unplastered) 3 hrs
190mm (single skin unplastered) 6 hrs
*
Calculated from oven dry density
**
Calculated using mass law curve - BS8233 (with 2 skins of dense plaster each 17kg/m2)
***
Calculated using table 14
BS5628-3 2005
DOWNLOAD PDF DATA SHEET
FOR THIS PRODUCT
 

Stowell Concrete Limited, Arnolds Way, Yatton Bristol BS49 4QN
Tel: 01934 834000   Fax: 01934 835474   Email: sales@stowellconcrete.co.uk

Registered Name: Stowell Concrete Limited. Place of Registration: England. Registered No: 1059577.
Address of Registered Office: Arnolds Way, Yatton, Bristol BS49 4QN
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