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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

 Fibotherm lightweight
 insulating blocks 3.6N/mm2 to BS EN 771-3
3.6N/mm2 (OVEN-DRY DENSITY approx 850 kg/m3)
Size mm
nominal 		approx
weight kg 		no. per
tonne 		multiples
of		 no. per
pack
440x215x75 6.7 150 56 112
440x215x100 9.0 110 44 88
440x215x140 12.5 80 32 64
440x215x190 17.2 58 20 40
Course adjusters        
65x215x100 1.35 740 128 512
65x215x140 1.9 530 96 384

U-Value 0.21

 Fibotherm lightweight insulating block - option 1
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Fibotherm 3.6N/mm2 (λ 0.29)    0.345
50mm low emissivity cavity    0.640
50mm foil-faced partial fill PIR/PU board (λ 0.022)    2.273
100mm Fibotherm 3.6N/mm2  (λ 0.27)    0.370
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    5.185 m2K/W
Uncorrected U-value    0.193 W/m2K
Mortar correction    0.002
Air gap correction    0.010
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.206 W/m2K


U-Value 0.25

 Fibotherm lightweight insulating block - option 2
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Fibotherm 3.6N/mm2 (λ 0.29)    0.345
100mm high performance mineral wool (λ 0.032)    3.125
100mm Fibotherm 3.6N/mm2 (λ 0.27)    0.370
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    4.052 m2K/W
Uncorrected U-value    0.247 W/m2K
Mortar correction    0.002
Air gap correction    0.000
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.250 W/m2K


U-Value 0.27

 Fibotherm lightweight insulating block - option 3
Outside resistance    0.040
19mm sand/cement render (λ 1.00)    0.019
100mm Fibotherm 3.6N/mm2 (λ 0.29)    0.345
50mm low emissivity cavity    0.640
50mm foil-faced partial fill PIR/PU board (λ 0.022)    2.273
100mm Fibotherm 3.6N/mm2 (λ 0.27)    0.370
13mm dense plaster (λ 0.57)    0.023
Inside resistance    0.130
Sum of resistances    3.840 m2K/W
Uncorrected U-value    0.260 W/m2K
Mortar correction    0.002
Air gap correction    0.010
Wall tie correction - Staifix HRT4-225    0.001
U-VALUE    0.273 W/m2K


 
Stowell Fibotherm blocks are
ideal for...
INNER OR OUTER LEAF OF CAVITY WALLS
PARTITION WALLS
 
Stowell Fibotherm blocks offer the following advantages...
HIGH INSULATION
LOW SHRINKAGE
LOW SITE BREAKAGE
LOW DENSITY
GOOD FIXING
EXCELLENT PLASTER KEY
THERMAL CONDUCTIVITY: λ*
0.27 W/mK* @ 3% m/c (Inside skin)
0.29 W/mK* @ 5% m/c (Outside skin)
THERMAL RESISTANCE:
Size
mm
m2K/W at:
m2K/W at:
75
3%m/c 0.278
5%m/c 0.259
100
3%m/c 0.370
5%m/c 0.345
140
3%m/c 0.519
5%m/c 0.483
190
3%m/c 0.704
5%m/c 0.655
(m/c = moisture content)
SOUND INSULATION:**
39dB(A) 75mm single skin, 100kg/m2
41dB(A) 100mm single skin, 125kg/m2
42dB(A) 140mm single skin, 165kg/m2
44dB(A) 190mm single skin, 210kg/m2
FIRE RESISTENCE:***
75mm (single skin unplastered) –
100mm (single skin unplastered) 2 hrs
140mm (single skin unplastered) 3 hrs
190mm (single skin unplastered) 6 hrs
For walls, U-value calculations of
0.30 W/m2K or lower must be obtained for new dwellings (L1A) but in practice, to achieve satisfactory SAP rating, walls need to be designed in the region of
0.25 W/m2K to 0.28 W/m2K. 0.28 W/m2K is the requirement for work on existing buildings (L1B).
*
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
 
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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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