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CONCRETE BLOCKS

 

Dense concrete blocks

 

Fibotherm lightweight
insulating blocks

 

Stowlite lightweight
concrete blocks 7.3N/mm2

 

Stowlite lightweight concrete
blocks 10.4N/mm2

 

Hollow and cellular
concrete blocks 7.3N/mm2

 

Concrete midi blocks

 

Concrete soap bar blocks, coursing bricks & slip bricks

 

First floor T profile blocks

 

First floor recessed T profile
blocks

 

MACRO blocks

 

Generation 2 MACRO blocks

 

Foundation (trench) blocks
& Padstones

 

Your own block design

PAVING SLABS

 

Commercial slabs

 

Patio paving and wet
cast edgings

 

Tactile and patterned paving

 

Permeable paving

 

Vintage flagstones...
traditional style decorative flags

KERBS, EDGINGS & CHANNELS

FLOORING PRODUCTS
(T beams/Hollowcore)

 

Concrete pre-stressed T beams (concrete joists)

 

Hollowcore flooring

 

Stowell solutions for separating floors to help satisfy Robust details part E

 

Stowell solutions for domestic floors

 

Stowell solutions for ground floors to help satisfy Part L

 

Concrete flooring blocks

 

Accessories

 

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

 

On-site instructions for pre-cast hollowcore flooring planks

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

 Stowlite lightweight
 concrete blocks 10.4N/mm2 to BS EN 771-3
10.4N/mm2 (OVEN-DRY DENSITY approx 1600 kg/m3)
Size mm
nominal 		approx
weight kg 		no. per
tonne 		multiples
of		 no. per
pack
440x215x100 15.5 64 44 88
440x215x140 22.0• 46 32 64
Course adjusters        
65x215x100 2.3 430 128 512
65x215x140 3.2 310 96 384
• 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 10.4N/mm2 (λ 0.75)    0.133
50mm low emissivity cavity    0.640
50mm foil-faced partial fill PIR/PU board (λ 0.022)    2.273
100mm Stowlite 10.4N/mm2  (λ 0.71)    0.141
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    4.744 m2K/W
Uncorrected U-value    0.211 W/m2K
Mortar correction    0.000
Air gap correction    0.010
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.222 W/m2K


U-Value 0.28

 Stowlite lightweight concrete block - option 2
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Stowlite 10.4N/mm2 (λ 0.75)    0.133
100mm high performance mineral wool (λ 0.032)    3.125
100mm Stowlite 10.4N/mm2 (λ 0.71)    0.141
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    3.611 m2K/W
Uncorrected U-value    0.277 W/m2K
Mortar correction    0.000
Air gap correction    0.000
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.278 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 10.4N/mm2 (λ 0.75)    0.133
50mm low emissivity cavity    0.640
60mm foil-faced partial fill PIR/PU board (λ 0.022)    2.727
100mm Stowlite 10.4N/mm2 (λ 0.71)    0.141
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    3.853 m2K/W
Uncorrected U-value    0.260 W/m2K
Mortar correction    0.000
Air gap correction    0.010
Wall tie correction - Staifix HRT4-250    0.002
U-VALUE    0.272 W/m2K

 
Stowlite 10.4N/mm2 blocks are approximately 17.5% lighter than the dense block of the same strength and provide a good finish for rendering fixing.
THERMAL CONDUCTIVITY: λ*
0.71 W/mK* @ 3% m/c (Inside skin)
0.75 W/mK* @ 5% m/c (Outside skin)
THERMAL RESISTANCE:
Size
mm
m2K/W at:
m2K/W at:
100
3%m/c 0.141
5%m/c 0.133
140
3%m/c 0.197
5%m/c 0.186
(m/c = moisture content)
SOUND INSULATION:**
44dB(A) 100mm single skin, 195kg/m2
45dB(A) 140mm single skin, 260kg/m2
FIRE RESISTENCE:***
100mm (single skin unplastered) 2 hrs
140mm (single skin unplastered) 3 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
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FOR THIS PRODUCT
 
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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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